1
|
Rahul A, Reegan AD, Shriram AN, Fouque F, Rahi M. Innovative sterile male release strategies for Aedes mosquito control: progress and challenges in integrating evidence of mosquito population suppression with epidemiological impact. Infect Dis Poverty 2024; 13:91. [PMID: 39627857 PMCID: PMC11613880 DOI: 10.1186/s40249-024-01258-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2024] [Accepted: 11/14/2024] [Indexed: 12/06/2024] Open
Abstract
BACKGROUND Aedes mosquitoes pose a significant global threat as vectors for several debilitating arboviruses, including dengue, Zika, yellow fever, and chikungunya. Their unique breeding habits, behavior, and daytime activity complicate control efforts, prompting the search for innovative solutions. The sterile insect technique (SIT) and incompatible insect technique (IIT) are promising new techniques under investigation. This review synthesizes findings from field trials on SIT and/or IIT for Aedes mosquito control. METHODS A scoping review was conducted through comprehensive searches on Scopus, Web of Science, MEDLINE, PubMed, and preprint repositories up to April 25, 2024. Studies were initially screened for relevance based on their titles and abstracts, followed by a full-text review conducted by two independent extractors. Only field trials with control groups were included, with the final assessment focusing on trials reporting epidemiological outcomes. Data were abstracted into templates, emphasizing study design, intervention details, and outcomes. The review adhered to the PRISMA-ScR guidelines. RESULTS The search identified 21 field trials in various countries against Aedes mosquitoes. These trials employed diverse methodologies and mosquito release strategies, achieving varying levels of mosquito population suppression. Notably, two SIT and two Wolbachia-based IIT trials reported epidemiological outcomes, including reductions in dengue incidence and associated risk ratios. However, the reliance on national surveillance data for assessing dengue incidence suggests caution due to the potential underreporting of subclinical cases. CONCLUSIONS The review underscores the promise of SIT and IIT for controlling Aedes mosquito populations, citing successful reductions in mosquito densities and dengue transmission. However, it calls for more rigorous study designs and standardized methodologies, as well as the adoption of comprehensive frameworks to accurately assess the effectiveness of these interventions. Future research should focus on bridging gaps in real-world effectiveness by addressing factors such as feasibility, acceptability, scalability, and cost, which are crucial for guiding their successful large-scale deployment in any country.
Collapse
Affiliation(s)
- Arya Rahul
- ICMR-Vector Control Research Centre, Indira Nagar, Puducherry, India
| | - Appadurai Daniel Reegan
- ICMR-Vector Control Research Centre, Indira Nagar, Puducherry, India
- Academy of Scientific and Innovation Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, India
| | - A N Shriram
- ICMR-Vector Control Research Centre, Indira Nagar, Puducherry, India
- Academy of Scientific and Innovation Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, India
| | | | - Manju Rahi
- ICMR-Vector Control Research Centre, Indira Nagar, Puducherry, India.
- Academy of Scientific and Innovation Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, India.
| |
Collapse
|
2
|
Abbasi M, Yousefi S, Nikpour F. Assessing agricultural practices and insecticides resistance for effective malaria vector control in northwestern Iran. Trop Med Health 2024; 52:81. [PMID: 39511698 PMCID: PMC11542464 DOI: 10.1186/s41182-024-00653-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2024] [Accepted: 10/24/2024] [Indexed: 11/15/2024] Open
Abstract
BACKGROUND After three years with no local transmission of malaria, an outbreak occurred in Iran in 2022. Key malaria control methods in Iran are including indoor residual spraying (IRS), long-lasting insecticide-treated nets (LLINs), and prompt diagnosis and treatment of malaria cases. Anopheles sacharovi is one of the main malaria vectors in Iran. This study aimed to determine the insecticides resistance status of An. sacharovi in northwestern Iran, to inform effective vector control programs in this region. METHODS Larval stages of An. sacharovi were collected from various larval habitats located in the villages along the Aras River. Adult susceptibility tests were performed on An. sacharovi using diagnostic doses of insecticides accordance to World Health Organization (WHO) guidelines. The study also evaluated agricultural insecticide and fertilizer usage alongside the presence of natural mosquito predators in breeding sites in the study area. RESULTS Alongside various chemicals such as silica, humic acid, superphosphate, sulfur, urea, and solupotasse at different dose levels, organophosphorus and pyrethroid insecticides are commonly used in rice fields and orchards. Anopheles sacharovi displayed diverse reactions to insecticides, demonstrating resistance to DDT but sensitivity to malathion, and showing similar reactions to carbamate and pyrethroid insecticides. CONCLUSIONS These results provide significant insights into agricultural practices and the presence of mosquito larvae in the study area. The extensive use of a specific herbicide illustrates its popularity among farmers for weed control, while other agricultural products focus on enhancing soil fertility and productivity. The absence of mosquito larvae in habitats with predators indicates the usefulness of these predators in controlling the population of mosquitoes. The resistance of mosquitoes to certain insecticides highlights the need for careful selection and intermittent use of insecticides in vector control programs. These findings can inform the development of targeted strategies to reduce malaria transmission risks. Further research is essential for assessing the effectiveness of these interventions.
Collapse
Affiliation(s)
- Madineh Abbasi
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Saideh Yousefi
- Sirjan School of Medical Sciences, Sirjan, Iran.
- Student Research Committee, Sirjan School of Medical Sciences, Sirjan, Iran.
| | - Fatemeh Nikpour
- Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
- Department of Vector-Borne Diseases, Centre for Communicable Diseases Control, Ministry of Health, Tehran, Iran
| |
Collapse
|
3
|
Branda F, Giovanetti M, Ceccarelli G, Ciccozzi M, Scarpa F. ArboItaly: Leveraging open data for enhanced arbovirus surveillance in Italy. Front Pharmacol 2024; 15:1459408. [PMID: 39376616 PMCID: PMC11456481 DOI: 10.3389/fphar.2024.1459408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Accepted: 09/11/2024] [Indexed: 10/09/2024] Open
Affiliation(s)
- Francesco Branda
- Unit of Medical Statistics and Molecular Epidemiology, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Marta Giovanetti
- Department of Sciences and Technologies for Sustainable Development and One Health, Università Campus Bio-Medico di Roma, Rome, Italy
- Instituto Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
- Climate Amplified Diseases and Epidemics (CLIMADE), Brasilia, Brazil
| | - Giancarlo Ceccarelli
- Department of Public Health and Infectious Diseases, University Hospital Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| | - Massimo Ciccozzi
- Unit of Medical Statistics and Molecular Epidemiology, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Fabio Scarpa
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| |
Collapse
|
4
|
Ojianwuna CC, Enwemiwe VN, Esiwo E, Mekunye F, Anidiobi A, Oborayiruvbe TE. Susceptibility status and synergistic activity of DDT and Lambda-cyhalothrin on Anopheles gambiae and Aedes aegypti in Delta State, Nigeria. PLoS One 2024; 19:e0309199. [PMID: 39208076 PMCID: PMC11361428 DOI: 10.1371/journal.pone.0309199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024] Open
Abstract
The detection of insecticide resistance in male mosquitoes has been treated with less importance in monitoring insecticide resistance spread in mosquitoes. There are no studies on the susceptibility and synergistic activity of DDT and lambda-cyhalothrin on male Anopheles gambiae and Aedes aegypti in Delta State, Nigeria. Even though studies have extensively reported resistance in female mosquitoes, the susceptibility of male mosquitoes to insecticide classes should be ascertained. In this study, we tested the susceptibility status and synergistic activity of DDT and Lambda-cyhalothrin on An. gambiae and Ae. aegypti in Delta State, Nigeria, in order to ascertain the level of resistance and knockdown. In addition, we modelled the knockdown time using Probit analysis model. WHO bioassay method was used to expose two days old adult mosquitoes to 4% DDT and 0.05% lambda-cyhalothrin. The results showed that An. gambiae mosquitoes exposed to DDT and lambda-cyhalothrin were confirmed resistant (61% and 53% respectively). However, pre-exposing the resistant mosquito population to piperonyl butoxide (4%) showed an increase in mortality to 90% (possible resistance) in DDT and 98% (susceptible) in lambda-cyhalothrin. Ae. aegypti mosquitoes exposed to DDT were susceptible (98%) while those exposed to lambda-cyhalothrin were confirmed resistant (87%) and this increased to complete mortality (100%) in PBO+lambda-cyhalothrin population. Furthermore, the results showed that the knockdown time (KDT50 and KDT95) in An. gambiae exposed to DDT was 39.5-71.2 minutes and 124.5-146.4 minutes respectively, while that of lambda-cyhalothrin was 33.0-81.8 minutes and 64.0-124.4 minutes respectively. In Ae. aegypti, KDT50 and KDT95 was 23.9 and 61.7minutes for DDT exposure whereas it was 5.6-15.3 minutes and 36.1-72.3 minutes for lambda-cyhalothrin exposure. It can be concluded that male An. gambiae mosquitoes exposed to the insecticides were resistant and the causes may be linked to certain resistant genes in the mosquitoes. The chances of transferring resistance are possible in wild species and molecular-based studies on the resistant gene in male mosquitoes as well as the tendencies of transfer are required to establish this focus.
Collapse
Affiliation(s)
- Chioma C. Ojianwuna
- Department of Animal and Environmental Biology, Faculty of Science, Delta State University, Abraka, Nigeria
| | - Victor N. Enwemiwe
- Department of Animal and Environmental Biology, Faculty of Science, Delta State University, Abraka, Nigeria
| | - Eric Esiwo
- Department of Animal and Environmental Biology, Faculty of Science, Delta State University, Abraka, Nigeria
| | - Favour Mekunye
- Department of Animal and Environmental Biology, Faculty of Science, Delta State University, Abraka, Nigeria
| | - Ann Anidiobi
- Department of Animal and Environmental Biology, Faculty of Science, Delta State University, Abraka, Nigeria
| | - Treasure E. Oborayiruvbe
- Department of Animal and Environmental Biology, Faculty of Science, Delta State University, Abraka, Nigeria
| |
Collapse
|
5
|
Alkathiri B, Lee S, Ahn K, Cho YS, Youn SY, Seo K, Umemiya-Shirafuji R, Xuan X, Kwak D, Shin S, Lee SH. 16S rRNA metabarcoding for the identification of tick-borne bacteria in ticks in the Republic of Korea. Sci Rep 2024; 14:19708. [PMID: 39181959 PMCID: PMC11344767 DOI: 10.1038/s41598-024-70815-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024] Open
Abstract
Ticks are blood-sucking ectoparasites that act as vectors for transmission of various pathogens. The purpose of this study was to assess tick-borne bacteria, whether pathogenic or not, in ticks distributed in Korea using 16S rRNA metabarcoding and to confirm the results by PCR. Questing ticks were collected from four provinces in Korea in 2021 using the flagging method. After pooling the DNAs from the 61 tick pools (including 372 ticks), the bacterial 16S rRNA V3-V4 hypervariable region was amplified and sequenced using the MiSeq platform. Rickettsia, Ehrlichia, and the endosymbiont Wolbachia were confirmed by conventional PCR and molecular analysis. In total, 6907 ticks (534 pools) were collected and identified as belonging to five species (Haemaphysalis spp., H. longicornis, H. flava, I. nipponensis, and A. testudinarium). Through 16S rRNA metabarcoding, 240 amplicon sequence variants were identified. The dominant taxa were Rickettsiella and Coxiella. Additionally, pathogenic bacteria such as Rickettsia and Ehrlichia, endosymbiotic bacteria such as Wolbachia and Spiroplasma were identified. Polymerase chain reaction (PCR) was performed to confirm the presence of Rickettsia, Ehrlichia, Bartonella, and Wolbachia in individual ticks. Overall, 352 (65.92%) of 534 pools tested positive for at least one of the screened tick-borne bacteria. Rickettsia was the most prevalent (61.42%), followed by Wolbachia (5.05%). Ehrlichia was detected in 4.86% of tested samples, whereas Bartonella was not detected. In this study, 16S rRNA metabarcoding revealed the presence of Rickettsia, Wolbachia, and Ehrlichia, in that order of abundance, while showing absence of Bartonella. These results were confirmed to exhibit the same trend as that of the conventional PCR. Therefore, large-scale screening studies based on pooling, as applied in this study, will be useful for examining novel or rare pathogens present in various hosts and vectors.
Collapse
Affiliation(s)
- Badriah Alkathiri
- College of Veterinary Medicine, Chungbuk National University, Chungbuk, 28644, Republic of Korea
| | - Subin Lee
- College of Veterinary Medicine, Chungbuk National University, Chungbuk, 28644, Republic of Korea
| | - KyuSung Ahn
- College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Yun Sang Cho
- Laboratory of Parasitic and Honeybee Diseases, Bacterial Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - So Youn Youn
- Laboratory of Parasitic and Honeybee Diseases, Bacterial Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Kwangwon Seo
- College of Veterinary Medicine, Chungbuk National University, Chungbuk, 28644, Republic of Korea
| | - Rika Umemiya-Shirafuji
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, 080-8555, Japan
| | - Xuenan Xuan
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, 080-8555, Japan
| | - Dongmi Kwak
- College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - SungShik Shin
- College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Seung-Hun Lee
- College of Veterinary Medicine, Chungbuk National University, Chungbuk, 28644, Republic of Korea.
| |
Collapse
|
6
|
Kayesh MEH, Nazneen H, Kohara M, Tsukiyama-Kohara K. An effective pan-serotype dengue vaccine and enhanced control strategies could help in reducing the severe dengue burden in Bangladesh-A perspective. Front Microbiol 2024; 15:1423044. [PMID: 39228383 PMCID: PMC11368799 DOI: 10.3389/fmicb.2024.1423044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 08/06/2024] [Indexed: 09/05/2024] Open
Abstract
Dengue is an important vector-borne disease occurring globally. Dengue virus (DENV) infection can result in a potentially life-threatening disease. To date, no DENV-specific antiviral treatment is available. Moreover, an equally effective pan-serotype dengue virus vaccine is not available. Recently, two DENV vaccines, Dengvaxia and Qdenga, were licensed for limited use. However, none of them have been approved in Bangladesh. DENV is transmitted by Aedes mosquitoes, and global warming caused by climate change favoring Aedes breeding plays an important role in increasing DENV infections in Bangladesh. Dengue is a serious public health concern in Bangladesh. In the year 2023, Bangladesh witnessed its largest dengue outbreak, with the highest number of dengue cases (n = 321,179) and dengue-related deaths (n = 1,705) in a single epidemic year. There is an increased risk of severe dengue in individuals with preexisting DENV-specific immunoglobulin G if the individuals become infected with different DENV serotypes. To date, vector control has remained the mainstay for controlling dengue; therefore, an immediate, strengthened, and effective vector control program is critical and should be regularly performed for controlling dengue outbreaks in Bangladesh. In addition, the use of DENV vaccine in curbing dengue epidemics in Bangladesh requires more consideration and judgment by the respective authority of Bangladesh. This review provides perspectives on the control and prevention of dengue outbreaks. We also discuss the challenges of DENV vaccine use to reduce dengue epidemics infection in Bangladesh.
Collapse
Affiliation(s)
- Mohammad Enamul Hoque Kayesh
- Department of Microbiology and Public Health, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal, Bangladesh
| | - Humayra Nazneen
- Department of Haematology, Dhaka Medical College Hospital, Dhaka, Bangladesh
| | - Michinori Kohara
- Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kyoko Tsukiyama-Kohara
- Joint Faculty of Veterinary Medicine, Transboundary Animal Diseases Centre, Kagoshima University, Kagoshima, Japan
| |
Collapse
|
7
|
Zamora-Avilés N, Orozco-Flores AA, Cavazos-Vallejo T, Romo-Sáenz CI, Cuevas-García DA, Gomez-Flores R, Tamez-Guerra P. Intra-Phenotypic and -Genotypic Variations of Beauveria bassiana (Bals.) Vuill. Strains Infecting Aedes aegypti L. Adults. Int J Mol Sci 2024; 25:8807. [PMID: 39201493 PMCID: PMC11354911 DOI: 10.3390/ijms25168807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/02/2024] Open
Abstract
Beauveria bassiana has potential for Aedes aegypti biological control. However, its efficacy depends on the strain's geographic location, host susceptibility, and virulence. The present study aimed to evaluate the effectiveness of B. bassiana strain BBPTG4 conidia in controlling Ae. aegypti adults and its detection via introns profile on exposed mosquito corpses. Morphologic characteristics among strains were highly similar. Comprehensive testing of these strains demonstrated that BBPT4 exhibited the ideal biological activity for Ae. aegypti control, with a median lethal time (TL50) of 7.5 d compared to ~3 d and ~10 d for BB01 and BB37 strains, respectively. Infected mosquitoes died after GHA and BBPTG4 exposure, and corpses were analyzed for infecting strains detection. Differences among the seven evaluated strains were determined, assessing five different insertion group I intron profiles in BBTG4, BB01, GHA, BB37, and BB02 strains. Mosquitoes infected by BBPTG4 and non-exposed (negative control) intron profiles were obtained. We detected the presence of introns in the BBPTG4 strain, which were not present in non-exposed mosquitoes. In conclusion, B. bassiana strains showed similarities in terms of their cultural and microscopic morphological characteristics and biologicals virulence level, but different intron profiles. BBPTG4 strain-infected Ae. aegypti adult corpses, showing specific amplicons, enabled us to identify B. bassiana at the strain level among infected mosquitoes. However, monitoring and detection of field-infected insects is essential for further verification.
Collapse
Affiliation(s)
- Norma Zamora-Avilés
- Departamento Ecología de Artrópodos y Manejo de Plagas, El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto Km 2.5, Tapachula 30700, Mexico;
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| | - Alonso A. Orozco-Flores
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| | - Teodora Cavazos-Vallejo
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| | - César I. Romo-Sáenz
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| | - David A. Cuevas-García
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| | - Ricardo Gomez-Flores
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| | - Patricia Tamez-Guerra
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico; (A.A.O.-F.); (T.C.-V.); (C.I.R.-S.); (D.A.C.-G.); (R.G.-F.)
| |
Collapse
|
8
|
Mbigha Donfack KC, De Coninck L, Ghogomu SM, Matthijnssens J. Aedes Mosquito Virome in Southwestern Cameroon: Lack of Core Virome, But a Very Rich and Diverse Virome in Ae. africanus Compared to Other Aedes Species. Viruses 2024; 16:1172. [PMID: 39066334 PMCID: PMC11281338 DOI: 10.3390/v16071172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/13/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
In Cameroon, Aedes mosquitoes transmit various arboviruses, posing significant health risks. We aimed to characterize the Aedes virome in southwestern Cameroon and identify potential core viruses which might be associated with vector competence. A total of 398 Aedes mosquitoes were collected from four locations (Bafoussam, Buea, Edea, and Yaounde). Aedes albopictus dominated all sites except for Bafoussam, where Aedes africanus prevailed. Metagenomic analyses of the mosquitoes grouped per species into 54 pools revealed notable differences in the eukaryotic viromes between Ae. africanus and Ae. albopictus, with the former exhibiting greater richness and diversity. Thirty-seven eukaryotic virus species from 16 families were identified, including six novel viruses with near complete genome sequences. Seven viruses were further quantified in individual mosquitoes via qRT-PCR. Although none of them could be identified as core viruses, Guangzhou sobemo-like virus and Bafoussam mosquito solemovirus, were highly prevalent regionally in Ae. albopictus and Ae. africanus, respectively. This study highlights the diverse eukaryotic virome of Aedes species in southwestern Cameroon. Despite their shared genus, Aedes species exhibit limited viral sharing, with varying viral abundance and prevalence across locations. Ae. africanus, an understudied vector, harbors a rich and diverse virome, suggesting potential implications for arbovirus vector competence.
Collapse
Affiliation(s)
- Karelle Celes Mbigha Donfack
- Laboratory of Viral Metagenomics, Laboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium
- Molecular and Cell Biology Laboratory, Biotechnology Unit, Department of Biochemistry and Molecular Biology, University of Buea, Buea P.O. Box 63, Cameroon
| | - Lander De Coninck
- Laboratory of Viral Metagenomics, Laboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium
| | - Stephen Mbigha Ghogomu
- Molecular and Cell Biology Laboratory, Biotechnology Unit, Department of Biochemistry and Molecular Biology, University of Buea, Buea P.O. Box 63, Cameroon
| | - Jelle Matthijnssens
- Laboratory of Viral Metagenomics, Laboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium
| |
Collapse
|
9
|
Barbosa RC, Godoy RSM, Ferreira PG, Mendes TAO, Ramalho-Ortigão M, Ribeiro JMC, Martins GF. Exploring the midgut physiology of the non-haematophagous mosquito Toxorhynchites theobaldi. Open Biol 2024; 14:230437. [PMID: 38955221 DOI: 10.1098/rsob.230437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 06/11/2024] [Indexed: 07/04/2024] Open
Abstract
Toxorhynchites mosquitoes have an exclusively phytophagous feeding habit as adults, which leads to significant differences in their morphophysiology compared with haematophagous mosquitoes. However, the molecular mechanisms of digestion in this mosquito are not well understood. In this study, RNA sequencing of the posterior midgut (PMG) of the mosquito Toxorhynchites theobaldi was undertaken, highlighting its significance in mosquito digestion. Subsequently, a comparison was made between the differential gene expression of the PMG and that of the anterior midgut. It was found that the most abundant proteases in the PMG were trypsin and chymotrypsin, and the level of gene expression for enzymes essential for digestion (such as serine protease, α-amylase and pancreatic triacylglycerol lipase) and innate immune response (including catalase, cecropin-A2 and superoxide dismutase) was like that of haematophagous mosquitoes. Peritrophin-1 was detected in the entire midgut, with an elevated expression level in the PMG. Based on our findings, it is hypothesized that a non-haematophagic habit might have been exhibited by the ancestor of Tx. theobaldi, and this trait may have been retained. This study represents a pioneering investigation at the molecular level of midgut contents in a non-haematophagous mosquito. The findings offer valuable insights into the evolutionary aspects of feeding habits in culicids.
Collapse
Affiliation(s)
- Renata C Barbosa
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Raquel S M Godoy
- Fundação Oswaldo Cruz, Instituto René Rachou, Fiocruz, Belo Horizonte, Minas Gerais 30190-002, Brazil
| | - Priscila G Ferreira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais 50670-900, Brazil
| | - Tiago A O Mendes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais 50670-900, Brazil
| | | | - José M C Ribeiro
- Section of Vector Biology, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Rockville, MD 20852, USA
| | - Gustavo F Martins
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| |
Collapse
|
10
|
Hixson B, Chen R, Buchon N. Innate immunity in Aedes mosquitoes: from pathogen resistance to shaping the microbiota. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230063. [PMID: 38497256 PMCID: PMC10945403 DOI: 10.1098/rstb.2023.0063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/12/2023] [Indexed: 03/19/2024] Open
Abstract
Discussions of host-microbe interactions in mosquito vectors are frequently dominated by a focus on the human pathogens they transmit (e.g. Plasmodium parasites and arboviruses). Underlying the interactions between a vector and its transmissible pathogens, however, is the physiology of an insect living and interacting with a world of bacteria and fungi including commensals, mutualists and primary and opportunistic pathogens. Here we review what is known about the bacteria and fungi associated with mosquitoes, with an emphasis on the members of the Aedes genus. We explore the reciprocal effects of microbe on mosquito, and mosquito on microbe. We analyse the roles of bacterial and fungal symbionts in mosquito development, their effects on vector competence, and their potential uses as biocontrol agents and vectors for paratransgenesis. We explore the compartments of the mosquito gut, uncovering the regionalization of immune effectors and modulators, which create the zones of resistance and immune tolerance with which the mosquito host controls and corrals its microbial symbionts. We examine the anatomical patterning of basally expressed antimicrobial peptides. Finally, we review the relationships between inducible antimicrobial peptides and canonical immune signalling pathways, comparing and contrasting current knowledge on each pathway in mosquitoes to the model insect Drosophila melanogaster. This article is part of the theme issue 'Sculpting the microbiome: how host factors determine and respond to microbial colonization'.
Collapse
Affiliation(s)
- Bretta Hixson
- Department of Entomology, Cornell University College of Agriculture and Life Sciences, Ithaca, 14853, NY, USA
| | - Robin Chen
- Department of Entomology, Cornell University College of Agriculture and Life Sciences, Ithaca, 14853, NY, USA
| | - Nicolas Buchon
- Department of Entomology, Cornell University College of Agriculture and Life Sciences, Ithaca, 14853, NY, USA
| |
Collapse
|
11
|
Belem LRW, Ibemgbo SA, Gomgnimbou MK, Verma DK, Kaboré A, Kumar A, Sangaré I, Sunil S. Development of Multiplex Molecular Assays for Simultaneous Detection of Dengue Serotypes and Chikungunya Virus for Arbovirus Surveillance. Curr Issues Mol Biol 2024; 46:2093-2104. [PMID: 38534750 DOI: 10.3390/cimb46030134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/10/2024] [Accepted: 02/13/2024] [Indexed: 03/28/2024] Open
Abstract
The major arboviruses mainly belong to the Bunyaviridae, Togaviridae, and Flaviviridae families, among which the chikungunya virus and dengue virus have emerged as global public health problems. The main objective of this study was to develop specific, sensitive, and cost-effective molecular multiplex RT-PCR and RT-qPCR assays for the rapid and simultaneous detection of CHIKV and the four serotypes of DENV for arbovirus surveillance. Specific primers for all viruses were designed, and one-step multiplex RT-PCR (mRT-PCR) and RT-qPCR (mRT-qPCR) were developed using reference strains of the CHIKV and DENV serotypes. The specificity of the test for all the viruses was confirmed through sequencing. The standard curves showed a high correlation coefficient, R2 = 0.99, for DENV-2 and DENV-3; R2 = 0.98, for DENV-4; and CHIKV; R2 = 0.93, for DENV-1. The limits of detection were calculated to be 4.1 × 10-1 copies/reaction for DENV-1, DENV-3, and CHIKV and 4.1 × 101 for DENV-2 and DENV-4. The specificity and sensitivity of the newly developed mRT-PCR and mRT-qPCR were validated using positive serum samples collected from India and Burkina Faso. The sensitivity of mRT-PCR and mRT-qPCR are 91%, and 100%, respectively. The specificity of both assays was 100%. mRT-PCR and mRT-qPCR assays are low-cost, and a combination of both will be a useful tool for arbovirus surveillance.
Collapse
Affiliation(s)
- Louis Robert W Belem
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
- Centre d'Excellence Africain en Innovations Biotechnologiques pour l'Elimination des Maladies à Transmission Vectorielle (CEA/ITECH-MTV), Université Nazi Boni, Bobo-Dioulasso 01 BP 1091, Burkina Faso
- Ecole Doctorale Sciences Naturelles et Agronomiques (ED-SNA), Université Nazi Boni, Bobo-Dioulasso 01 BP 1091, Burkina Faso
- Laboratoire de Recherche, Centre MURAZ, Institut National de Santé Publique, Bobo-Dioulasso BP 10278, Burkina Faso
| | - Sylvester Agha Ibemgbo
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Michel Kiréopori Gomgnimbou
- Centre d'Excellence Africain en Innovations Biotechnologiques pour l'Elimination des Maladies à Transmission Vectorielle (CEA/ITECH-MTV), Université Nazi Boni, Bobo-Dioulasso 01 BP 1091, Burkina Faso
- Laboratoire de Recherche, Centre MURAZ, Institut National de Santé Publique, Bobo-Dioulasso BP 10278, Burkina Faso
- Institut Supérieur des Sciences de la Santé (INSSA), Université Nazi Boni, Bobo-Dioulasso 01 BP 1091, Burkina Faso
| | - Dileep Kumar Verma
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Antoinette Kaboré
- Laboratoire National de Référence, Institut National de Santé Publique, Ouagadougou BP 10278, Burkina Faso
| | - Ankit Kumar
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Ibrahim Sangaré
- Centre d'Excellence Africain en Innovations Biotechnologiques pour l'Elimination des Maladies à Transmission Vectorielle (CEA/ITECH-MTV), Université Nazi Boni, Bobo-Dioulasso 01 BP 1091, Burkina Faso
- Laboratoire de Recherche, Centre MURAZ, Institut National de Santé Publique, Bobo-Dioulasso BP 10278, Burkina Faso
- Institut Supérieur des Sciences de la Santé (INSSA), Université Nazi Boni, Bobo-Dioulasso 01 BP 1091, Burkina Faso
- Centre Hospitalier Universitaire Souro Sanou (CHUSS), Bobo-Dioulasso 01 BP 676, Burkina Faso
| | - Sujatha Sunil
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| |
Collapse
|
12
|
Dhanushkumar T, Selvam PK, M E S, Vasudevan K, C GPD, Zayed H, Kamaraj B. Rational design of a multivalent vaccine targeting arthropod-borne viruses using reverse vaccinology strategies. Int J Biol Macromol 2024; 258:128753. [PMID: 38104690 DOI: 10.1016/j.ijbiomac.2023.128753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 11/17/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
Viruses transmitted by arthropods, such as Dengue, Zika, and Chikungunya, represent substantial worldwide health threats, particularly in countries like India. The lack of approved vaccines and effective antiviral therapies calls for developing innovative strategies to tackle these arboviruses. In this study, we employed immunoinformatics methodologies, incorporating reverse vaccinology, to design a multivalent vaccine targeting the predominant arboviruses. Epitopes of B and T cells were recognized within the non-structural proteins of Dengue, Zika, and Chikungunya viruses. The predicted epitopes were enhanced with adjuvants β-defensin and RS-09 to boost the vaccine's immunogenicity. Sixteen distinct vaccine candidates were constructed, each incorporating epitopes from all three viruses. FUVAC-11 emerged as the most promising vaccine candidate through molecular docking and molecular dynamics simulations, demonstrating favorable binding interactions and stability. Its effectiveness was further evaluated using computational immunological studies confirming strong immune responses. The in silico cloning performed using the pET-28a(+) plasmid facilitates the future experimental implementation of this vaccine candidate, paving the way for potential advancements in combating these significant arboviral threats. However, further in vitro and in vivo studies are warranted to confirm the results obtained in this computational study, which highlights the effectiveness of immunoinformatics and reverse vaccinology in creating vaccines against major Arboviruses, offering a promising model for developing vaccines for other vector-borne diseases and enhancing global health security.
Collapse
Affiliation(s)
- T Dhanushkumar
- Department of Biotechnology, School of Applied Sciences, REVA University, Bengaluru 560064, India
| | - Prasanna Kumar Selvam
- Department of Biotechnology, School of Applied Sciences, REVA University, Bengaluru 560064, India
| | - Santhosh M E
- Department of Biotechnology, School of Applied Sciences, REVA University, Bengaluru 560064, India
| | - Karthick Vasudevan
- Department of Biotechnology, School of Applied Sciences, REVA University, Bengaluru 560064, India.
| | - George Priya Doss C
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of BioSciences and Technology, Vellore Institute of Technology (VIT), Vellore, India.
| | - Hatem Zayed
- Department of Biomedical Sciences College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Balu Kamaraj
- Department of Dental Education, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| |
Collapse
|
13
|
Trouche B, Schrieke H, Duron O, Eren AM, Reveillaud J. Wolbachia populations across organs of individual Culex pipiens: highly conserved intra-individual core pangenome with inter-individual polymorphisms. ISME COMMUNICATIONS 2024; 4:ycae078. [PMID: 38915450 PMCID: PMC11195471 DOI: 10.1093/ismeco/ycae078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 04/26/2024] [Accepted: 06/06/2024] [Indexed: 06/26/2024]
Abstract
Wolbachia is a maternally inherited intracellular bacterium that infects a wide range of arthropods including mosquitoes. The endosymbiont is widely used in biocontrol strategies due to its capacity to modulate arthropod reproduction and limit pathogen transmission. Wolbachia infections in Culex spp. are generally assumed to be monoclonal but the potential presence of genetically distinct Wolbachia subpopulations within and between individual organs has not been investigated using whole genome sequencing. Here we reconstructed Wolbachia genomes from ovary and midgut metagenomes of single naturally infected Culex pipiens mosquitoes from Southern France to investigate patterns of intra- and inter-individual differences across mosquito organs. Our analyses revealed a remarkable degree of intra-individual conservancy among Wolbachia genomes from distinct organs of the same mosquito both at the level of gene presence-absence signal and single-nucleotide polymorphisms (SNPs). Yet, we identified several synonymous and non-synonymous substitutions between individuals, demonstrating the presence of some level of genomic heterogeneity among Wolbachia that infect the same C. pipiens field population. Overall, the absence of genetic heterogeneity within Wolbachia populations in a single individual confirms the presence of a dominant Wolbachia that is maintained under strong purifying forces of evolution.
Collapse
Affiliation(s)
- Blandine Trouche
- IRD, MIVEGEC, University of Montpellier, INRAE, CNRS, 34394 Montpellier, France
| | - Hans Schrieke
- IRD, MIVEGEC, University of Montpellier, INRAE, CNRS, 34394 Montpellier, France
| | - Olivier Duron
- IRD, MIVEGEC, University of Montpellier, INRAE, CNRS, 34394 Montpellier, France
| | - A Murat Eren
- Marine Biological Laboratory, Woods Hole, MA 02543, United States
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg, 26129 Oldenburg, Germany
| | - Julie Reveillaud
- IRD, MIVEGEC, University of Montpellier, INRAE, CNRS, 34394 Montpellier, France
| |
Collapse
|
14
|
Santhoshkumar T, Govindarajan RK, Kamaraj C, Alharbi NS, Manimaran K, Yanto DHY, Subramaniyan V, Baek KH. Biological synthesis of nickel nanoparticles using extracellular metabolites of Bacillus sphaericus: Characterization and vector-borne disease control applications. SOUTH AFRICAN JOURNAL OF BOTANY 2023; 162:481-494. [DOI: 10.1016/j.sajb.2023.09.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2024]
|
15
|
Alami A, El Ouali Lalami A, Annemer S, El-Akhal F, Ez zoubi Y, Farah A. Chemical Composition and Larvicidal Properties of Essential Oils from Wild and Cultivated Artemisia campestris L., an Endemic Plant in Morocco. ScientificWorldJournal 2023; 2023:5748133. [PMID: 37849964 PMCID: PMC10578985 DOI: 10.1155/2023/5748133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/19/2023] Open
Abstract
The Asteraceae family is well known for its toxic and repellent activity against mosquitoes. In this study, essential oils (EOs) extracted from the aerial parts of both wild and cultivated Artemisia campestris L. plants were tested for larvicidal activity against Culex pipiens (Diptera: Culicidae), a pest mosquito widely suspected to be the vector responsible for West Nile virus transmission. The research aims at comparing the chemical composition and insecticidal activity of cultivated and wild A. campestris EOs. The EOs were obtained by hydrodistillation from the plant's aerial parts and were analyzed using GC-MS. Furthermore, the larviciding experiment was carried out following the standard WHO protocol. The result showed that wild and cultivated plant EOs differed only quantitatively, while the qualitative profile revealed a nearly identical chemical composition. Camphor (18.98%), car-3-en-5-one (11.25%), thujone (6.36%), chrysanthenone (6.24%), filifolone (4.56%), and borneol (3.56%) dominate the wild plant EO. Camphor (21.01%), car-3-en-5-one (17%), chrysanthenone (10.15%), filifolone (7.90%), borneol (3.38%), and thujone (3.08%) are the major compounds of the cultivated plant. Cultivation did not affect the EO production since the yield of the cultivated plant was 0.5 ± 0.1% and 0.6 ± 0.2% for the wild plant. The cultivated A. campestris EO had the highest insecticidal activity (LC50 = 9.79 µg/ml), and no significant difference was noticed between wild and cultivated A. campestris EO in terms of LC90. These findings could pave the way for a new method of producing biocides to control major disease vectors and offer a potential alternative for pest control.
Collapse
Affiliation(s)
- Abdellatif Alami
- Laboratory of Applied Organic Chemistry, Faculty of Sciences and Techniques of Fez, Sidi Mohamed Ben Abdellah University, Route d'Imouzzer, Fez, Morocco
| | - Abdelhakim El Ouali Lalami
- Institute of Nursing Professions and Health Techniques of Fez, Regional Health Directorate, EL Ghassani Hospital, Fez 30000, Morocco
| | - Saoussan Annemer
- Laboratory of Applied Organic Chemistry, Faculty of Sciences and Techniques of Fez, Sidi Mohamed Ben Abdellah University, Route d'Imouzzer, Fez, Morocco
| | - Fouad El-Akhal
- Institute of Nursing Professions and Health Techniques of Tetouan (Annex Al Hoceima), Regional Health Directorate, Hospital Mohammed V, Al Hoceima 32000, Morocco
| | - Yassine Ez zoubi
- Laboratory of Applied Organic Chemistry, Faculty of Sciences and Techniques of Fez, Sidi Mohamed Ben Abdellah University, Route d'Imouzzer, Fez, Morocco
- Biotechnology, Environmental Technology and Valorization of Bio-Resources Team, Department of Biology, Faculty of Sciences and Techniques Al-Hoceima, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Abdellah Farah
- Laboratory of Applied Organic Chemistry, Faculty of Sciences and Techniques of Fez, Sidi Mohamed Ben Abdellah University, Route d'Imouzzer, Fez, Morocco
| |
Collapse
|
16
|
Lu HZ, Sui Y, Lobo NF, Fouque F, Gao C, Lu S, Lv S, Deng SQ, Wang DQ. Challenge and opportunity for vector control strategies on key mosquito-borne diseases during the COVID-19 pandemic. Front Public Health 2023; 11:1207293. [PMID: 37554733 PMCID: PMC10405932 DOI: 10.3389/fpubh.2023.1207293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/29/2023] [Indexed: 08/10/2023] Open
Abstract
Mosquito-borne diseases are major global health problems that threaten nearly half of the world's population. Conflicting resources and infrastructure required by the coronavirus disease 2019 (COVID-19) global pandemic have resulted in the vector control process being more demanding than ever. Although novel vector control paradigms may have been more applicable and efficacious in these challenging settings, there were virtually no reports of novel strategies being developed or implemented during COVID-19 pandemic. Evidence shows that the COVID-19 pandemic has dramatically impacted the implementation of conventional mosquito vector measures. Varying degrees of disruptions in malaria control and insecticide-treated nets (ITNs) and indoor residual spray (IRS) distributions worldwide from 2020 to 2021 were reported. Control measures such as mosquito net distribution and community education were significantly reduced in sub-Saharan countries. The COVID-19 pandemic has provided an opportunity for innovative vector control technologies currently being developed. Releasing sterile or lethal gene-carrying male mosquitoes and novel biopesticides may have advantages that are not matched by traditional vector measures in the current context. Here, we review the effects of COVID-19 pandemic on current vector control measures from 2020 to 2021 and discuss the future direction of vector control, taking into account probable evolving conditions of the COVID-19 pandemic.
Collapse
Affiliation(s)
- Hong-Zheng Lu
- Chinese Center for Disease Control and Prevention, National Institute of Parasitic Diseases, Shanghai, China
- Department of Pathogen Biology, the Key Laboratory of Microbiology and Parasitology of Anhui Province, the Key Laboratory of Zoonoses of High Institutions in Anhui, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yuan Sui
- Brown School, Washington University, St. Louis, MO, United States
| | - Neil F. Lobo
- Malaria Elimination Initiative, Institute for Global Health Sciences, University of California, San Francisco, San Francisco, CA, United States
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, United States
| | - Florence Fouque
- Research for Implementation Unit, The Special Programme for Research and Training in Tropical Diseases, World Health Organization, Geneva, Switzerland
| | - Chen Gao
- Chinese Center for Disease Control and Prevention, National Institute of Parasitic Diseases, Shanghai, China
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Shenning Lu
- Chinese Center for Disease Control and Prevention, National Institute of Parasitic Diseases, Shanghai, China
- Chinese Center for Tropical Diseases Research, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| | - Shan Lv
- Chinese Center for Disease Control and Prevention, National Institute of Parasitic Diseases, Shanghai, China
- Chinese Center for Tropical Diseases Research, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sheng-Qun Deng
- Department of Pathogen Biology, the Key Laboratory of Microbiology and Parasitology of Anhui Province, the Key Laboratory of Zoonoses of High Institutions in Anhui, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Duo-Quan Wang
- Chinese Center for Disease Control and Prevention, National Institute of Parasitic Diseases, Shanghai, China
- Chinese Center for Tropical Diseases Research, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
17
|
Wong ML, Zulzahrin Z, Vythilingam I, Lau YL, Sam IC, Fong MY, Lee WC. Perspectives of vector management in the control and elimination of vector-borne zoonoses. Front Microbiol 2023; 14:1135977. [PMID: 37025644 PMCID: PMC10070879 DOI: 10.3389/fmicb.2023.1135977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/28/2023] [Indexed: 04/08/2023] Open
Abstract
The complex transmission profiles of vector-borne zoonoses (VZB) and vector-borne infections with animal reservoirs (VBIAR) complicate efforts to break the transmission circuit of these infections. To control and eliminate VZB and VBIAR, insecticide application may not be conducted easily in all circumstances, particularly for infections with sylvatic transmission cycle. As a result, alternative approaches have been considered in the vector management against these infections. In this review, we highlighted differences among the environmental, chemical, and biological control approaches in vector management, from the perspectives of VZB and VBIAR. Concerns and knowledge gaps pertaining to the available control approaches were discussed to better understand the prospects of integrating these vector control approaches to synergistically break the transmission of VZB and VBIAR in humans, in line with the integrated vector management (IVM) developed by the World Health Organization (WHO) since 2004.
Collapse
Affiliation(s)
- Meng Li Wong
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Zulhisham Zulzahrin
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Indra Vythilingam
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Yee Ling Lau
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - I-Ching Sam
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
- Department of Medical Microbiology, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
| | - Mun Yik Fong
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Wenn-Chyau Lee
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| |
Collapse
|
18
|
Bueno-Marí R, Domínguez-Santos R, Trelis M, Garrote-Sánchez E, Cholvi M, Quero de Lera F, Khoubbane M, Marcilla A, Gil R. [ Wolbachia pipientis infections in populations of Aedes albopictus in the city of València (Spain): implications for mosquito control.]. Rev Esp Salud Publica 2023; 97:e202303017. [PMID: 36883556 PMCID: PMC10560531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/13/2023] [Indexed: 03/09/2023] Open
Abstract
OBJECTIVE The presence of Aedes albopictus, of high sanitary and social impact, was first reported in Valencia (Eastern Spain) in 2015. Innovative tools for its control include the use of the endosymbiotic bacterium Wolbachia pipientis. The release of mosquito males infected with the wPip strain, has proven very promising for large-scale Incompatible Insect Technique (IIT) applications. Before this strategy can be implemented in Valencia, it is important to know whether the natural local mosquito populations are Wolbachia-infected and, if so, identifying the infecting strains/supergroups, these being the objectives of the present work. METHODS Eggs were collected from the 19 districts of the València city between May and October 2019. A total of 50 lab-reared adult Ae. albopictus individuals were processed and analyzed for Wolbachia detection and molecular characterization. These actions took place within the framework of a collaboration established with the Department of Health and Consumer Affairs of the city council of Valencia. Fisher's exact test was used to detect the statistical significance of the differences between groups. RESULTS Our study revealed that 94% of the analyzed samples were naturally infected with Wolbachia. Both wAlbA and wAlbB supergroups were identified, with most samples (72% of the infected ones) carrying co-infections. CONCLUSIONS These data provide the first characterization of the Wolbachia presence in natural populations of Ae. albopictus in the Mediterranean area of Spain. This information is relevant to evaluate the potential use of Wolbachia strains in order to achieve the suppression of the Asian tiger mosquito populations through massive release of artificially-infected males.
Collapse
Affiliation(s)
- Rubén Bueno-Marí
- Departamento de Investigación y Desarrollo (I+D), Laboratorios Lokímica. Paterna (València). España
- Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València. Burjassot (València). España
| | - Rebeca Domínguez-Santos
- Instituto de Biología Integrativa de Sistemas (I2SysBio), Universitat de València/CSIC. Paterna (València). España
| | - María Trelis
- Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València. Burjassot (València). España
- Unidad Mixta de Endocrinología, Nutrición y Dietética Clínica, Instituto de Investigación Sanitaria La Fe. València. España
| | - Emilio Garrote-Sánchez
- Instituto de Biología Integrativa de Sistemas (I2SysBio), Universitat de València/CSIC. Paterna (València). España
| | - María Cholvi
- Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València. Burjassot (València). España
| | | | - Messaoud Khoubbane
- Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València. Burjassot (València). España
| | - Antonio Marcilla
- Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València. Burjassot (València). España
- Unidad Mixta de Endocrinología, Nutrición y Dietética Clínica, Instituto de Investigación Sanitaria La Fe. València. España
| | - Rosario Gil
- Instituto de Biología Integrativa de Sistemas (I2SysBio), Universitat de València/CSIC. Paterna (València). España
- Área de Genómica y Salud, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Com. Valenciana (FISABIO). València. España
| |
Collapse
|
19
|
Kayesh MEH, Khalil I, Kohara M, Tsukiyama-Kohara K. Increasing Dengue Burden and Severe Dengue Risk in Bangladesh: An Overview. Trop Med Infect Dis 2023; 8:tropicalmed8010032. [PMID: 36668939 PMCID: PMC9866424 DOI: 10.3390/tropicalmed8010032] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/24/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023] Open
Abstract
Dengue is a prevalent and rapidly spreading mosquito-borne viral disease affecting humans. The geographic range of dengue is expanding, and much like in many other tropical regions of the world, dengue has become a major public health issue in Bangladesh. Until a large epidemic dengue outbreak in 2000, sporadic outbreaks have occurred in Bangladesh since 1964. After 2000, varying intensities of dengue activity were observed each year until 2018. However, in 2019, Bangladesh experienced the largest dengue epidemic in its history, with 101,354 dengue cases and 164 dengue-related deaths. Notably, this outbreak occurred in many regions that were previously considered free of the disease. As of 10 December 2022, a total of 60,078 dengue cases and 266 dengue-related deaths were reported in Bangladesh, with the 2022 outbreak being the second largest since 2000. There is an increased genetic diversity of the dengue virus (DENV) in Bangladesh and all four DENV serotypes are prevalent and co-circulating, which increases the risk for severe dengue owing to the antibody-dependent enhancement effect. Vector control remains the mainstay of dengue outbreak prevention; however, the vector control programs adopted in Bangladesh seem inadequate, requiring improved vector control strategies. In this review, we provide an overview of the epidemiology of DENV infection and the risks for a severe dengue outbreak in Bangladesh. Additionally, we discuss different dengue vector control strategies, from which the most suitable and effective measures can be applied in the context of Bangladesh for tackling future dengue epidemics.
Collapse
Affiliation(s)
- Mohammad Enamul Hoque Kayesh
- Department of Microbiology and Public Health, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal 8210, Bangladesh
- Correspondence: (M.E.H.K.); (K.T.-K.); Tel.: +88-025-506-1677 (M.E.H.K.); +81-99-285-3589 (K.T.-K.)
| | - Ibrahim Khalil
- Department of Livestock Services, Ministry of Fisheries & Livestock, Government of the Peoples Republic of Bangladesh, Dhaka 1215, Bangladesh
| | - Michinori Kohara
- Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
- Correspondence: (M.E.H.K.); (K.T.-K.); Tel.: +88-025-506-1677 (M.E.H.K.); +81-99-285-3589 (K.T.-K.)
| |
Collapse
|
20
|
Mbanzulu KM, Wumba R, Mboera LEG, Kayembe JMN, Engbu D, Bojabwa MM, Zanga JK, Misinzo G, Kimera SI. Pattern of Aedes aegypti and Aedes albopictus Associated with Human Exposure to Dengue Virus in Kinshasa, the Democratic Republic of the Congo. Trop Med Infect Dis 2022; 7:392. [PMID: 36422943 PMCID: PMC9695267 DOI: 10.3390/tropicalmed7110392] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 08/27/2023] Open
Abstract
Dengue is a worldwide public health concern. The current study assessed the extent of human exposure to the dengue virus in relation to the distribution pattern of Aedes aegypti and Ae. albopictus in Kinshasa. Cross-sectional surveys were carried out in 2021 and 2022. The baseline entomological survey involved 19 municipalities using a grid cell sampling approach. All containers holding water were inspected for the presence of larvae in each grid. The collected larvae were kept in an insectary until the adult emergence for morphological identification. Four hundred febrile patients attending the hospital were screened for the presence of dengue antibodies (IgG, IgM) and NS1 antigen using a rapid diagnostic test (RDT) Biosynex®. Residences of positive cases were geo-referenced. We evaluated 1850 grid cells, of which 19.5% were positive for Aedes larvae. The positive grid cells were identified in the Ndjili (44.0%), Mont Ngafula (32.0%) and Ngaliema (26.0%), and Limete (32.0%) municipalities. The Ae. aegypti (11.2%) predominated in the northwestern, and Ae. albopictus (9.1%) appeared in the high vegetation coverage areas. Of 61 (15.3%) participants exposed to dengue, 8.3% presented acute dengue. Young, (6-17 years), male, and Mont Amba district participants were most exposed to dengue. In conclusion, dengue occurrence in Kinshasa overlaps somewhat the geographical and ecological distributions of Ae. aegypti and Ae. albopictus. Both species are not homogenously distributed, likely due to environmental factors. These findings can assist the targeted control activities.
Collapse
Affiliation(s)
- Kennedy Makola Mbanzulu
- SACIDS Africa Centre of Excellence for Infectious Diseases of Humans and Animals in Eastern and Southern Africa, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania
- Department of Tropical Medicine, Infectious and Parasitic Diseases, University of Kinshasa, Kinshasa P.O. Box 01306, Democratic Republic of the Congo
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, Morogoro P.O. Box 3019, Tanzania
| | - Roger Wumba
- Department of Tropical Medicine, Infectious and Parasitic Diseases, University of Kinshasa, Kinshasa P.O. Box 01306, Democratic Republic of the Congo
| | - Leonard E. G. Mboera
- SACIDS Africa Centre of Excellence for Infectious Diseases of Humans and Animals in Eastern and Southern Africa, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania
| | - Jean-Marie Ntumba Kayembe
- SACIDS Africa Centre of Excellence for Infectious Diseases of Humans and Animals in Eastern and Southern Africa, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania
- Department of Internal Medicine, University of Kinshasa, Kinshasa P.O. Box 747, Democratic Republic of the Congo
| | - Danoff Engbu
- Department of Tropical Medicine, Infectious and Parasitic Diseases, University of Kinshasa, Kinshasa P.O. Box 01306, Democratic Republic of the Congo
| | - Michael Mondjo Bojabwa
- Department of Tropical Medicine, Infectious and Parasitic Diseases, University of Kinshasa, Kinshasa P.O. Box 01306, Democratic Republic of the Congo
| | - Josué Kikana Zanga
- Department of Tropical Medicine, Infectious and Parasitic Diseases, University of Kinshasa, Kinshasa P.O. Box 01306, Democratic Republic of the Congo
| | - Gerald Misinzo
- SACIDS Africa Centre of Excellence for Infectious Diseases of Humans and Animals in Eastern and Southern Africa, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, Morogoro P.O. Box 3019, Tanzania
| | - Sharadhuli Iddi Kimera
- SACIDS Africa Centre of Excellence for Infectious Diseases of Humans and Animals in Eastern and Southern Africa, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania
- Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Morogoro P.O. Box 3021, Tanzania
| |
Collapse
|
21
|
Ritchie IT, Needles KT, Leigh BA, Kaur R, Bordenstein SR. Transgenic cytoplasmic incompatibility persists across age and temperature variation in Drosophila melanogaster. iScience 2022; 25:105327. [PMID: 36304111 PMCID: PMC9593245 DOI: 10.1016/j.isci.2022.105327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/28/2022] [Accepted: 10/07/2022] [Indexed: 12/03/2022] Open
Abstract
Environmental stressors can impact the basic biology and applications of host-microbe symbioses. For example, Wolbachia symbiont densities and cytoplasmic incompatibility (CI) levels can decline in response to extreme temperatures and host aging. To investigate whether transgenic expression of CI-causing cif genes overcomes the environmental sensitivity of CI, we exposed transgenic male flies to low and high temperatures as well as aging treatments. Our results indicate that transgenic cif expression induces nearly complete CI regardless of temperature and aging, despite severe weakening of Wolbachia-based wild-type CI. Strong CI levels correlate with higher levels of cif transgene expression in young males. Altogether, our results highlight that transgenic CI persists against common environmental pressures and may be relevant for future control applications involving the cifA and cifB transgenes.
Collapse
Affiliation(s)
- Isabella T. Ritchie
- Vanderbilt University, Department of Biological Sciences, Nashville, TN 37235, USA
- Vanderbilt University, Vanderbilt Microbiome Innovation Center, Nashville, TN 37235, USA
| | - Kelly T. Needles
- Vanderbilt University, Department of Biological Sciences, Nashville, TN 37235, USA
- Vanderbilt University, Vanderbilt Microbiome Innovation Center, Nashville, TN 37235, USA
| | - Brittany A. Leigh
- Vanderbilt University, Department of Biological Sciences, Nashville, TN 37235, USA
- Vanderbilt University, Vanderbilt Microbiome Innovation Center, Nashville, TN 37235, USA
| | - Rupinder Kaur
- Vanderbilt University, Department of Biological Sciences, Nashville, TN 37235, USA
- Vanderbilt University, Vanderbilt Microbiome Innovation Center, Nashville, TN 37235, USA
- The Pennsylvania State University, Departments of Biology and Entomology, University Park, PA 16802, USA
- The Pennsylvania State University, Microbiome Center, Huck Institutes of the Life Sciences, University Park, PA 16802, USA
| | - Seth R. Bordenstein
- Vanderbilt University, Department of Biological Sciences, Nashville, TN 37235, USA
- Vanderbilt University, Vanderbilt Microbiome Innovation Center, Nashville, TN 37235, USA
- The Pennsylvania State University, Departments of Biology and Entomology, University Park, PA 16802, USA
- The Pennsylvania State University, Microbiome Center, Huck Institutes of the Life Sciences, University Park, PA 16802, USA
| |
Collapse
|
22
|
Malfacini M, Puggioli A, Balestrino F, Carrieri M, Dindo ML, Bellini R. Aedes albopictus Sterile Male Production: Influence of Strains, Larval Diet and Mechanical Sexing Tools. INSECTS 2022; 13:899. [PMID: 36292847 PMCID: PMC9604197 DOI: 10.3390/insects13100899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
The sterile insect technique (SIT) is a biologically based method of pest control, which relies on the mass production, sterilization, and release of sterile males of the target species. Since females can transmit viruses, it is important to develop a mass rearing system to produce a large number of males with a low presence of females. We evaluated the effects of different strains, larval diets and sexing tools on male productivity and residual female presence for the application of SIT against Aedes albopictus. Strains coming from Italy, Germany, Greece, and Montenegro, with different levels of colonization, were reared with three larval diets: IAEA-BY, BLP-B and SLP-BY. Developed pupae were sexed using two different mechanical methods: sieve or Fay-Morlan separator. The results proved that adoption of the Fay-Morlan separator increased the productivity and limited the female presence. The IAEA-BY diet showed the lowest female contamination. Strains with a high number of breeding generations showed a decreased productivity and an increased female presence. Increased female presence was found only in extensively reared strains and only when the sorting operation was conducted with sieves. We hypothesize that extensive colonization may determine a size reduction which limits the sexing tool efficiency itself.
Collapse
Affiliation(s)
- Marco Malfacini
- Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin, 42, 40127 Bologna, Italy
- Department of Medical and Veterinary Entomology, Centro Agricoltura Ambiente “G. Nicoli”, Via Sant’Agata 835, 40014 Crevalcore, Italy
| | - Arianna Puggioli
- Department of Medical and Veterinary Entomology, Centro Agricoltura Ambiente “G. Nicoli”, Via Sant’Agata 835, 40014 Crevalcore, Italy
| | - Fabrizio Balestrino
- Department of Medical and Veterinary Entomology, Centro Agricoltura Ambiente “G. Nicoli”, Via Sant’Agata 835, 40014 Crevalcore, Italy
| | - Marco Carrieri
- Department of Medical and Veterinary Entomology, Centro Agricoltura Ambiente “G. Nicoli”, Via Sant’Agata 835, 40014 Crevalcore, Italy
| | - Maria Luisa Dindo
- Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin, 42, 40127 Bologna, Italy
| | - Romeo Bellini
- Department of Medical and Veterinary Entomology, Centro Agricoltura Ambiente “G. Nicoli”, Via Sant’Agata 835, 40014 Crevalcore, Italy
| |
Collapse
|
23
|
Nithya K, Bhuvaragavan S, Sruthi K, Meenakumari M, Shanthi S, Janarthanan S. Purification, characterization and larvicidal activity of a potent bioactive compound asarone from leaves of Acorus calamus against the culician larval mosquitoes. Parasitol Int 2022; 90:102620. [DOI: 10.1016/j.parint.2022.102620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/11/2022] [Accepted: 06/28/2022] [Indexed: 10/17/2022]
|
24
|
Nordin NRM, Arsad FS, Mahmud MH, Kamaruddin PSNM, Amir SM, Bahari NI, Hassan MR, Rahim SSSA, Lukman KA, Jeffree MS. Wolbachia in Dengue Control: A Systematic Review. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.9014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Dengue fever outbreaks have been an important public health issue causing high morbidity and mortality, and serious economic effects, particularly in Asia. Control strategies are a challenge to be implemented due to a variety of factors. However, new approaches such as Wolbachia-infected Aedes aegypti have been shown to successfully lowering the life spans of the mosquito, eggs resistance, and disease transmission capabilities. Field trials are still on-going, and there are data to support its benefit in a large population. This systematic review aims to determine the current progress and impact of using Wolbachia in curbing dengue cases in high dengue case locations worldwide.
METHODOLOGY: The study uses the Preferred Reporting Items for Systematic reviews and Meta-Analyses review protocol, while the formulation of the research question was based on population of interest, comparison, and outcome. The selected databases include Web of Science, Scopus, PubMed, SAGE, and EBSCOhost. A thorough identification, screening, and included process were done and the results retrieved four articles. These articles were then ranked based on quality using mixed methods appraisal tool.
RESULTS: A total of four articles were included from 2019 and 2020 reports in both dengue- and non-dengue-endemic settings. In this review, comparisons in terms of the hierarchy of the study design, community engagement and acceptance, Wolbachia-infected A. aegypti deployment, entomological outcome, and epidemiological outcomes were detailed. All four studies showed a decrease in dengue incidence in Wolbachia-intervention populations.
CONCLUSION: Wolbachia programs have been shown to be an effective method in combating dengue diseases. Strong community engagement and involvement from multidisciplinary teams are important factors to ensure the effectiveness and good outcomes of the program.
Collapse
|
25
|
Synergistic Effect of Bioactive Monoterpenes against the Mosquito, Culex pipiens (Diptera: Culicidae). Molecules 2022; 27:molecules27134182. [PMID: 35807427 PMCID: PMC9268466 DOI: 10.3390/molecules27134182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 11/23/2022] Open
Abstract
Mosquitoes represent one of the most important vectors and are responsible for the transmission of many arboviruses that affect human and animal health. The chemical method using synthetic insecticides disturbs the environmental system and promotes the appearance of resistant insect species. Therefore, this study investigated the insecticidal effect of some binary monoterpene combinations (1,8 cineole + α-pinene and carvone + R (+)-pulegone) using a mixture design approach. The fumigant toxicity was evaluated against Culex pipiens female adults using glass jars. The results show that the toxicity varies according to the proportions of each compound. Indeed, Mixture 1 (1,8-cineole + α-pinene) displayed a strong toxic effect (51.00 ± 0.86% after 24 h and 100.00 ± 0.70% after 48 h) when the pure compounds were tested at 0.25/0.75 proportions of 1,8-cineole and α-pinene, respectively. Nevertheless, the equal proportion (0.5/0.5) of carvone and R (+)-pulegone in Mixture 2 exhibited a toxic effect of 54.35 ± 0.75% after 24 h and 89.96 ± 0.14% after 48 h, respectively. For Mixture 1, the maximum area of mortality that the proposed model indicated was obtained between 0/1 and 0.25/0.75, while the maximum area of mortality in the case of Mixture 2 was obtained between 0.25/0.75 and 0.75/0.25. Moreover, the maximum possible values of mortality that could be achieved by the validated model were found to be 51.44% (after 24 h) and 100.24% (after 48 h) for Mixture 1 and 54.67% (after 24 h) and 89.99% (after 48 h) for Mixture 2. It can be said that all purev molecules tested through the binary mixtures acted together, which enhanced the insecticide’s effectiveness. These findings are very promising, as the chemical insecticide (deltamethrin) killed only 19.29 ± 0.01% and 34.05 ± 1.01% of the female adults after 24 h and 48 h, respectively. Thus, the findings of our research could help with the development of botanical insecticides that might contribute to management programs for controlling vectors of important diseases.
Collapse
|
26
|
Araújo NJS, Macêdo MJF, de Morais LP, da Cunha FAB, de Matos YMLS, de Almeida RS, Braga MFBM, Coutinho HDM. Control of arboviruses vectors using biological control by Wolbachia pipientis: a short review. Arch Microbiol 2022; 204:376. [PMID: 35678877 DOI: 10.1007/s00203-022-02983-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 11/29/2022]
Abstract
The number of arbovirus cases has increased in recent years, demonstrating a need for investing in effective control actions. Among these actions, are strategies using biological control vectors, a field where Wolbachia pipientis has shown itself as useful. Wolbachia pipientis, an obligatory intracellular Gram-negative bacteria, which parasites arthropods naturally or through laboratory-induced infections, is capable of manipulating the reproduction of its host. A systematic literature review gathering studies on this bacteria over last 10 years (2007-2021) was performed given its important role in the reduction of insect disease vectors. 111 articles were found, from which 78 were used in this study. Information on the Wolbachia biology, mechanism of action and potential for the biological control of insect disease vectors was gathered. The present study may contribute to the knowledge surrounding the bacterium, as well as stimulate the production of other studies with the same theme.
Collapse
Affiliation(s)
- Nara Juliana Santos Araújo
- Programa de Residência em Saúde Coletiva, Universidade Regional de Cariri-URCA, Regional University of Cariri, Crato, Ceará, 63105-000, Brazil
| | - Márcia Jordana Ferreira Macêdo
- Programa de Residência em Saúde Coletiva, Universidade Regional de Cariri-URCA, Regional University of Cariri, Crato, Ceará, 63105-000, Brazil
| | - Luís Pereira de Morais
- Programa de Residência em Saúde Coletiva, Universidade Regional de Cariri-URCA, Regional University of Cariri, Crato, Ceará, 63105-000, Brazil
| | - Francisco Assis Bezerra da Cunha
- Programa de Residência em Saúde Coletiva, Universidade Regional de Cariri-URCA, Regional University of Cariri, Crato, Ceará, 63105-000, Brazil.,Laboratório de Bioprospecção do Semiárido, Universidade Regional de Cariri-URCA, Crato, Ceará, Brazil
| | | | - Ray Silva de Almeida
- Laboratório de Microbiologia e Biologia Molecular, Universidade Regional de Cariri-URCA, Crato, Ceará, Brazil
| | | | - Henrique Douglas Melo Coutinho
- Programa de Residência em Saúde Coletiva, Universidade Regional de Cariri-URCA, Regional University of Cariri, Crato, Ceará, 63105-000, Brazil. .,Laboratório de Microbiologia e Biologia Molecular, Universidade Regional de Cariri-URCA, Crato, Ceará, Brazil.
| |
Collapse
|
27
|
Vector-Borne Viral Diseases as a Current Threat for Human and Animal Health—One Health Perspective. J Clin Med 2022; 11:jcm11113026. [PMID: 35683413 PMCID: PMC9181581 DOI: 10.3390/jcm11113026] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 12/15/2022] Open
Abstract
Over the last decades, an increase in the emergence or re-emergence of arthropod-borne viruses has been observed in many regions. Viruses such as dengue, yellow fever, or zika are a threat for millions of people on different continents. On the other hand, some arboviruses are still described as endemic, however, they could become more important in the near future. Additionally, there is a group of arboviruses that, although important for animal breeding, are not a direct threat for human health. Those include, e.g., Schmallenberg, bluetongue, or African swine fever viruses. This review focuses on arboviruses and their major vectors: mosquitoes, ticks, biting midges, and sandflies. We discuss the current knowledge on arbovirus transmission, ecology, and methods of prevention. As arboviruses are a challenge to both human and animal health, successful prevention and control are therefore only possible through a One Health perspective.
Collapse
|
28
|
Lee WC, Cheong FW, Amir A, Lai MY, Tan JH, Phang WK, Shahari S, Lau YL. Plasmodium knowlesi: the game changer for malaria eradication. Malar J 2022; 21:140. [PMID: 35505339 PMCID: PMC9066973 DOI: 10.1186/s12936-022-04131-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 03/18/2022] [Indexed: 11/12/2022] Open
Abstract
Plasmodium knowlesi is a zoonotic malaria parasite that has gained increasing medical interest over the past two decades. This zoonotic parasitic infection is prevalent in Southeast Asia and causes many cases with fulminant pathology. Despite several biogeographical restrictions that limit its distribution, knowlesi malaria cases have been reported in different parts of the world due to travelling and tourism activities. Here, breakthroughs and key information generated from recent (over the past five years, but not limited to) studies conducted on P. knowlesi were reviewed, and the knowledge gap in various research aspects that need to be filled was discussed. Besides, challenges and strategies required to control and eradicate human malaria with this emerging and potentially fatal zoonosis were described.
Collapse
Affiliation(s)
- Wenn-Chyau Lee
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Fei Wen Cheong
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Amirah Amir
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Meng Yee Lai
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Jia Hui Tan
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Wei Kit Phang
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Shahhaziq Shahari
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Yee-Ling Lau
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia.
| |
Collapse
|
29
|
Yuan QS, Wang L, Wang H, Wang X, Jiang W, Ou X, Xiao C, Gao Y, Xu J, Yang Y, Cui X, Guo L, Huang L, Zhou T. Pathogen-Mediated Assembly of Plant-Beneficial Bacteria to Alleviate Fusarium Wilt in Pseudostellaria heterophylla. Front Microbiol 2022; 13:842372. [PMID: 35432244 PMCID: PMC9005978 DOI: 10.3389/fmicb.2022.842372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/18/2022] [Indexed: 11/13/2022] Open
Abstract
Fusarium wilt (FW) is a primary replant disease that affects Pseudostellaria heterophylla (Taizishen) and is caused by Fusarium oxysporum, which occurs widely in China under the continuous monocropping regime. However, the ternary interactions among the soil microbiota, P. heterophylla, and F. oxysporum remain unknown. We investigated the potential interaction relationship by which the pathogen-mediated P. heterophylla regulates the soil and the tuberous root microbiota via high-throughput sequencing. Plant-pathogen interaction assays were conducted to measure the arrival of F. oxysporum and Pseudomonas poae at the tuberous root via qPCR and subsequent seedling disease incidence. A growth assay was used to determine the effect of the tuberous root crude exudate inoculated with the pathogen on P. poae. We observed that pathogen-mediated P. heterophylla altered the diversity and the composition of the microbial communities in its rhizosphere soil and tuberous root. Beneficial microbe P. poae and pathogen F. oxysporum were significantly enriched in rhizosphere soil and within the tuberous root in the FW group with high severity. Correlation analysis showed that, accompanied with FW incidence, P. poae co-occurred with F. oxysporum. The aqueous extract of P. heterophylla tuberous root infected by F. oxysporum substantially promoted the growth of P. poae isolates (H1-3-A7, H2-3-B7, H4-3-C1, and N3-3-C4). These results indicated that the extracts from the tuberous root of P. heterophylla inoculated with F. oxysporum might attract P. poae and promote its growth. Furthermore, the colonization assay found that the gene copies of sucD in the P. poae and F. oxysporum treatment (up to 6.57 × 1010) group was significantly higher than those in the P. poae treatment group (3.29 × 1010), and a pathogen-induced attraction assay found that the relative copies of sucD of P. poae in the F. oxysporum treatment were significantly higher than in the H2O treatment. These results showed that F. oxysporum promoted the colonization of P. poae on the tuberous root via F. oxysporum mediation. In addition, the colonization assay found that the disease severity index in the P. poae and F. oxysporum treatment group was significantly lower than that in the F. oxysporum treatment group, and a pathogen-induced attraction assay found that the disease severity index in the F. oxysporum treatment group was significantly higher than that in the H2O treatment group. Together, these results suggest that pathogen-mediated P. heterophylla promoted and assembled plant-beneficial microbes against plant disease. Therefore, deciphering the beneficial associations between pathogen-mediated P. heterophylla and microbes can provide novel insights into the implementation and design of disease management strategies.
Collapse
Affiliation(s)
- Qing-Song Yuan
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Lu Wang
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Hui Wang
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiaoai Wang
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Weike Jiang
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiaohong Ou
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Chenghong Xiao
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yanping Gao
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Jiao Xu
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Ye Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xiuming Cui
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Lanping Guo
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Luqi Huang
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tao Zhou
- Resource Institute for Chinese and Ethnic Materia Medica, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| |
Collapse
|
30
|
Alomar AA, Alto BW. Evaluation of Pyriproxyfen Effects on Aedes aegypti and Predatory Mosquito Toxorhynchites rutilus (Diptera: Culicidae). JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:585-590. [PMID: 34865101 DOI: 10.1093/jme/tjab193] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Control of mosquito vectors of pathogens remains heavily dependent on the application of conventional insecticides. Pyriproxyfen (PPF) is a novel insecticide that has been proposed for use in autodissemination techniques to control mosquito vectors. The use of PPF can inhibit adult emergence but does not inhibit larval development. This feature is favorable for controlling Aedes aegypti because PPF has the potential to work in combination with natural sources of mortality (competition, predation) during the immature stages, and other control methods, including biocontrol agents that further suppress recruitment of adult mosquitoes. However, the PPF effects on life-history traits of Ae. aegypti in comparison to predatory mosquito Toxorhynchites rutilus, a source of mortality, are not fully understood. Here, we show that larval exposure to PPF concentrations that inhibit 50-90% of adult emergence in Ae. aegypti had a negligible effect on adult emergence and lifespan of Tx. rutilus. Weights of adult Ae. aegypti and Tx. rutilus were not influenced by PPF. These findings suggest that the use of PPF to control mosquito vectors may have low effects on mosquito biocontrol agents. Our results extend and confirm earlier data showing that PPF has potential to implement with Tx. rutilus to suppress Ae. aegypti and provide an additional advantage of PPF use in autodissemination control strategies.
Collapse
Affiliation(s)
- Abdullah A Alomar
- Florida Medical Entomology Laboratory, University of Florida, Vero Beach, FL, 32962, USA
| | - Barry W Alto
- Florida Medical Entomology Laboratory, University of Florida, Vero Beach, FL, 32962, USA
| |
Collapse
|
31
|
Sehrawat N, Dahiya N, Yadav M, Yadav A. Zika virus vertical transmission in mosquitoes: A less understood mechanism. J Vector Borne Dis 2022; 59:37-44. [DOI: 10.4103/0972-9062.331411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
32
|
Schrieke H, Maignien L, Constancias F, Trigodet F, Chakloute S, Rakotoarivony I, Marie A, L'Ambert G, Makoundou P, Pages N, Murat Eren A, Weill M, Sicard M, Reveillaud J. The mosquito microbiome includes habitat-specific but rare symbionts. Comput Struct Biotechnol J 2021; 20:410-420. [PMID: 35140881 PMCID: PMC8803474 DOI: 10.1016/j.csbj.2021.12.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/11/2021] [Accepted: 12/12/2021] [Indexed: 11/26/2022] Open
Abstract
Microbial communities are known to influence mosquito lifestyles by modifying essential metabolic and behavioral processes that affect reproduction, development, immunity, digestion, egg survival, and the ability to transmit pathogens. Many studies have used 16S rRNA gene amplicons to characterize mosquito microbiota and investigate factors that influence host-microbiota dynamics. However, a relatively low taxonomic resolution due to clustering methods based on arbitrary threshold and the overall dominance of Wolbachia or Asaia symbionts obscured the investigation of rare members of mosquito microbiota in previous studies. Here, we used high resolution Shannon entropy-based oligotyping approach to analyze the microbiota of Culex pipiens, Culex quinquefasciatus and Aedes individuals from continental Southern France and overseas Guadeloupe as well as from laboratories with or without antibiotics treatment. Our experimental design that resulted in a series of mosquito samples with a gradient of Wolbachia density and relative abundance along with high-resolution analyses of amplicon sequences enabled the recovery of a robust signal from typically less accessible bacterial taxa. Our data confirm species-specific mosquito-bacteria associations with geography as a primary factor that influences bacterial community structure. But interestingly, they also reveal co-occurring symbiotic bacterial variants within single individuals for both Elizabethkingia and Erwinia genera, distinct and specific Asaia and Chryseobacterium in continental and overseas territories, and a putative rare Wolbachia variant. Overall, our study reveals the presence of previously overlooked microdiversity and multiple closely related symbiotic strains within mosquito individuals with a remarkable habitat-specificity.
Collapse
Affiliation(s)
- Hans Schrieke
- MIVEGEC, University of Montpellier, INRAE, CNRS, IRD, Montpellier, France
| | - Loïs Maignien
- Univ Brest, CNRS, IFREMER, Microbiology of Extreme Environments Laboratory, Plouzané, France
| | | | | | - Sarah Chakloute
- ASTRE, University of Montpellier, CIRAD, INRAE, Montpellier, France
| | | | - Albane Marie
- EID Méditerranée, 165 Avenue Paul Rimbaud, 34184 Montpellier, France
| | - Gregory L'Ambert
- EID Méditerranée, 165 Avenue Paul Rimbaud, 34184 Montpellier, France
| | - Patrick Makoundou
- ISEM, University of Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Nonito Pages
- ASTRE, University of Montpellier, CIRAD, INRAE, Montpellier, France
- CIRAD, UMR ASTRE, Guadeloupe, France
| | - A. Murat Eren
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, MA, USA
| | - Mylène Weill
- ISEM, University of Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Mathieu Sicard
- ISEM, University of Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Julie Reveillaud
- MIVEGEC, University of Montpellier, INRAE, CNRS, IRD, Montpellier, France
| |
Collapse
|
33
|
Van Duong C, Phuong Tran UT, Van Nguyen V, Bae YJ. Predator selection and predator-prey interactions for the biological control of mosquito dengue vectors in northern Vietnam. JOURNAL OF VECTOR ECOLOGY : JOURNAL OF THE SOCIETY FOR VECTOR ECOLOGY 2021; 46:163-172. [PMID: 35230021 DOI: 10.52707/1081-1710-46.2.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/17/2021] [Indexed: 06/14/2023]
Abstract
Predators and their interactions with target prey influence the efficiency of control strategies. In the present study, we demonstrate the implementation of natural predator selection for controlling dengue vectors in northern Vietnam through field-based observation of aquatic insect predators in natural habitats and lab-based assessment of predatorial capacities for several aquatic insect predators. The selected species was then used to evaluate the predatory-prey interaction using functional responses (FRs) toward 3rd- and 4th-instar larvae of four major medical mosquito species (Aedes aegypti, Aedes albopictus, Culex quinquefasciatus, and Anopheles minimus). The preference of selected predators for Ae. aegypti larvae over other mosquito larvae was also investigated. Both field observation and lab experiments indicated that the giant water bug Diplonychus rusticus was abundant and exhibited the highest predatory capacity for mosquito larvae. The predator exhibited type II FRs when offered each of the four prey species, and the greatest attack rates were observed for Ae. aegypti and Ae. albopictus, with only negligible differences observed in the handling times of the prey species. Further, Manly's selectivity (α) values calculated from the prey choice experiments showed that Ae. aegypti was preferred over both Cx. quinquefasciatus and An. minimus. Together, these findings indicate that D. rusticus could be successfully used to facilitate the biological control of both Ae. aegypti and Ae. albopictus within the species' distributional overlap in Southeast Asia.
Collapse
Affiliation(s)
- Cuong Van Duong
- Department of Environmental Science and Ecological Engineering, College of Life Sciences, Korea University, Seoul 02841, Korea
| | - Uyen Thi Phuong Tran
- Department of Applied Zoology, Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Vinh Van Nguyen
- Department of Applied Zoology, Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Yeon Jae Bae
- Department of Environmental Science and Ecological Engineering, College of Life Sciences, Korea University, Seoul 02841, Korea,
| |
Collapse
|
34
|
Chen P, Li J, Wang Z. Design of puncher for recycling of waste film fragments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:67724-67735. [PMID: 34263398 DOI: 10.1007/s11356-021-15400-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
Although the recycling of an entire piece of plastic film after farmland use has attracted significant attention, the film fragments generated by punching holes in such plastic films have never been studied. These film fragments can penetrate deeper into the soil more easily than whole pieces of plastic film, causing soil pollution. In this study, two new punchers with burrs were designed, and a group of comparative experiments were conducted on waste film fragment recycling. The results show that the average time required to complete the same task using punchers with two burrs (puncher 3) and one burr (puncher 2) can be reduced by 40.37% and 26.19%, respectively. The average success rates in recycling the film fragments are 91.67% and 68.17%, respectively. The performance of puncher 3 is better than that of puncher 2 for recycling the film fragments. Thus, the application of puncher 3 is beneficial for solving the problems in waste film recycling. Accordingly, the study is of great significance for protecting the soil environment, reducing "white pollution" and achieving China's sustainable development goals.
Collapse
Affiliation(s)
- Panpan Chen
- Pox 8, School of Information Management, Nanjing Agricultural University, Nanjing, 210031, China
| | - Jing Li
- Pox 8, School of Information Management, Nanjing Agricultural University, Nanjing, 210031, China.
| | - Zhimin Wang
- Pox 8, School of Information Management, Nanjing Agricultural University, Nanjing, 210031, China
| |
Collapse
|
35
|
Hegazy MI, Hegazy AM, Saad AM, Salem HM, El-Tahan AM, El-Saadony MT, Soliman SM, Taha AE, Alshehri MA, Ezzat Ahmed A, Swelum AA. ٍSome biologically active microorganisms have the potential to suppress mosquito larvae (Culex pipiens, Diptera: Culicidae). Saudi J Biol Sci 2021; 29:1998-2006. [PMID: 35531139 PMCID: PMC9072919 DOI: 10.1016/j.sjbs.2021.12.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/05/2021] [Accepted: 12/12/2021] [Indexed: 12/11/2022] Open
Abstract
Malaria is a disease caused by protozoan species of the genus Plasmodium. It is widespread and becoming a challenge in several African countries in the tropical and subtropical regions. In 2010, a report was published showing that over 1.2 million death cases were occurred globally due to malaria in just one year. The transmission of the disease from one person to another occurs via the bite of the Anopheles female. It is known that Plasmodium ovale, P. vivax, P. malariae, P. falciparum, and P. knowlesi are the highly infective malaria species. The problem of this disease is the absence of any effective medical treatment or vaccine, making the mosquito control is the only feasible way for disease prevention. Pesticides are currently the most widely used method for mosquito control, despite its well-known negative effects, including health hazards on human, the increasing insecticidal resistance, and the negative impact on the environment and beneficial organisms. Biological control (also called: biocontrol) of insects has been a promising method to overcome the negative effects of using chemical insecticides, as it depends on just using the natural enemies of pests to either minimize their populations or eradicate them. This article provides an overview of the recent and effective biological means to control malaria, such as bacteria, fungi, viruses, larvivorous fish, toxorhynchites larva and nematodes. In addition, the importance, advantages, and disadvantages of the biocontrol methods will be discussed in comparison with the traditionally used chemical methods of malaria control with special reference to nanotechnology as a novel method for insects’ control.
Collapse
Affiliation(s)
- Mohamed I. Hegazy
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Ahmad M. Hegazy
- Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Ahmed M. Saad
- Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Heba M. Salem
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
- Corresponding authors at: Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, PO Box 2460, Riyadh 11451, Saudi Arabia (A.A. Swelum).
| | - Amira M. El-Tahan
- Plant Production Department, Arid Lands Cultivation Research Institute, The City of Scientific. Research and Technological Applications, SRTA-City, Borg El Arab, Alexandria, Egypt
| | - Mohamed T. El-Saadony
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Soliman M. Soliman
- Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Ayman E. Taha
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Edfina 22758, Egypt
| | - Mohammed A. Alshehri
- Biology Department, College of Science, King Khalid University, 61413 Abha, Saudi Arabia
| | - Ahmed Ezzat Ahmed
- Biology Department, College of Science, King Khalid University, 61413 Abha, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, South Valley University, 83523 Qena, Egypt
| | - Ayman A. Swelum
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, PO Box 2460, Riyadh 11451, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Sharkia 44519, Egypt
- Corresponding authors at: Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, PO Box 2460, Riyadh 11451, Saudi Arabia (A.A. Swelum).
| |
Collapse
|
36
|
Moosa-Kazemi SH, Asgarian TS, Sedaghat MM, Javar S. Pathogenic fungi infection attributes of malarial vectors Anopheles maculipennis and Anopheles superpictus in central Iran. Malar J 2021; 20:393. [PMID: 34627243 PMCID: PMC8502412 DOI: 10.1186/s12936-021-03927-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 09/26/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Due to the effect of synthetic and commercial insecticides on non-target organisms and the resistance of mosquitoes, non-chemical and environmentally friendly methods have become prevalent in recent years. The present study was to isolate entomopathogenic fungi with toxic effects on mosquitoes in natural larval habitats. METHODS Larvae of mosquitoes were collected from Central, Qamsar, Niasar, and Barzok Districts in Kashan County, Central Iran by standard dipping method, from April to late December 2019. Dead larvae, live larvae showing signs of infection, and larvae and pupae with a white coating of fungal mycelium on the outer surface of their bodies were isolated from the rest of the larvae and sterilized with 10% sodium hypochlorite for 2 min, then washed twice with distilled water and transferred to potato-dextrose-agar (PDA) and water-agar (WA) media and incubated at 25 ± 2 °C for 3-4 days. Larvae and fungi were identified morphologically based on identification keys. RESULTS A total of 9789 larvae were collected from urban and rural areas in Kashan County. Thirteen species were identified which were recognized to belong to three genera, including Anopheles (7.89%), Culiseta (17.42%) and Culex (74.69%). A total of 105 larvae, including Anopheles superpictus sensu lato (s.l), Anopheles maculipennis s.l., Culex deserticola, Culex perexiguus, and Culiseta longiareolata were found to be infected by Nattrassia mangiferae, Aspergillus niger, Aspergillus fumigatus, Trichoderma spp., and Penicillium spp. Of these, Penicillium spp. was the most abundant fungus isolated and identified from the larval habitats, while An. superpictus s.l. was the most infected mosquito species. CONCLUSIONS Based on the observations and results obtained of the study, isolated fungi had the potential efficacy for pathogenicity on mosquito larvae. It is suggested that their effects on mosquito larvae should be investigated in the laboratory. The most important point, however, is the proper way of exploiting these biocontrol agents to maximize their effect on reducing the population of vector mosquito larvae without any negative effect on non-target organisms.
Collapse
Affiliation(s)
- Seyed Hassan Moosa-Kazemi
- Department of Medical Entomology & Vector Control, School of Public Health, Tehran University of Medical Sciences, P.O. Box 6446-14155, Tehran, Iran.
| | - Tahereh Sadat Asgarian
- Department of Medical Entomology & Vector Control, School of Public Health, Tehran University of Medical Sciences, P.O. Box 6446-14155, Tehran, Iran
| | - Mohammad Mehdi Sedaghat
- Department of Medical Entomology & Vector Control, School of Public Health, Tehran University of Medical Sciences, P.O. Box 6446-14155, Tehran, Iran.
| | - Saeedeh Javar
- Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extention Organization (AREEO), Tehran, Iran
| |
Collapse
|
37
|
Dutra HLC, Ford SA, Allen SL, Bordenstein SR, Chenoweth SF, Bordenstein SR, McGraw EA. The impact of artificial selection for Wolbachia-mediated dengue virus blocking on phage WO. PLoS Negl Trop Dis 2021; 15:e0009637. [PMID: 34314434 PMCID: PMC8345842 DOI: 10.1371/journal.pntd.0009637] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 08/06/2021] [Accepted: 07/08/2021] [Indexed: 11/18/2022] Open
Abstract
Wolbachia is currently at the forefront of global efforts to control arbovirus transmission from the vector Aedes aegypti. The use of Wolbachia relies on two phenotypes—cytoplasmic incompatibility (CI), conferred by cifA and cifB genes in prophage WO, and Wolbachia-mediated pathogen blocking (WMPB). These traits allow for local, self-sustaining reductions in transmission of dengue (DENV) following release of Wolbachia-infected A. aegypti. Here, aided by previous artificial selection experiment that generated Low and High pathogen blocking lines, we examined the potential link between WMPB and phage WO. We found no evidence that Wolbachia or phage WO relative densities predict DENV blocking strength across selected lines. However, selection resulted in reduced phage WO relative density for the Low WMPB line. The Low blocking line was previously shown to have reduced fitness as a result of selection. Through subsequent genomic analyses, we demonstrate that SNP variation underpinning selection for low blocking led to elevated frequency of potential deleterious SNPs on chromosome 1. The key region on chromosome 1 contains genes relating to cell cycle regulation, oxidative stress, transcriptional pausing, among others, that may have cascading effects on Wolbachia intracellular environment. We hypothesize that reduction in phage WO may be driven by changes in the loci directly under selection for blocking, or by the accumulation of predicted deleterious alleles in linkage disequilibrium with blocking loci resulting from hitchhiking. For the Low line with fewer phage WO, we also detected reduced expression of cifA and cifB CI genes, with patterns of expression varying between somatic and reproductive tissues. In conclusion, we propose that artificial selection for WMPB trait had corresponding impacts on phage WO densities, and also the transcription of CI-causing genes. Future studies may include a more detailed analysis of the regions the A. aegypti chromosome 1’s ability to affect WMPB and other Wolbachia-associated intrinsic factors such as phage WO. Wolbachia are widespread endosymbiotic bacteria of insects that cause Wolbachia-mediated pathogen blocking (WMPB) and cytoplasmic incompatibility (CI). The latter mediated by cif genes localized in the prophage WO region. Because of that, Wolbachia-infected mosquitoes are currently being used in field to fight the transmission of vector-borne viruses such as Dengue (DENV) to human populations. Aided by a previous artificial selection experiment that generated lines with variable (High and Low) DENV blocking strength, we tested for a potential link between WMPB and phage WO. There was no evidence that Wolbachia nor phage WO densities predict DENV blocking strength. However, we found that the Low blocking line had reduced phage WO density, and lower expression of the cif genes in a tissue-specific manner. We demonstrate that in addition to previous report of reduced fitness, the Low blocking line also exhibited increased frequency of potential deleterious SNPs on chromosome 1. Our hypotheses are that reduction in phage WO may have resulted from changes in the loci directly under selection for blocking, or by linkage disequilibrium events linked to the accumulation of mosquito predicted deleterious alleles. Our results highlight the importance of chromosome 1 for WMPB and its potential impact for other Wolbachia-associated factors like phage WO.
Collapse
Affiliation(s)
- Heverton L. C. Dutra
- Department of Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
| | - Suzanne A. Ford
- Department of Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
| | - Scott L. Allen
- School of Biological Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Sarah R. Bordenstein
- Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, United States of America
- Vanderbilt Microbiome Initiative, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Stephen F. Chenoweth
- School of Biological Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Seth R. Bordenstein
- Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, United States of America
- Vanderbilt Microbiome Initiative, Vanderbilt University, Nashville, Tennessee, United States of America
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Elizabeth A. McGraw
- Department of Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
- * E-mail:
| |
Collapse
|
38
|
de A Camargo F, Adimy M, Esteva L, Métayer C, Ferreira CP. Modeling the Relationship Between Antibody-Dependent Enhancement and Disease Severity in Secondary Dengue Infection. Bull Math Biol 2021; 83:85. [PMID: 34142264 DOI: 10.1007/s11538-021-00919-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 06/05/2021] [Indexed: 11/25/2022]
Abstract
Sequential infections with different dengue serotypes (DENV-1, 4) significantly increase the risk of a severe disease outcome (fever, shock, and hemorrhagic disorders). Two hypotheses have been proposed to explain the severity of the disease: (1) antibody-dependent enhancement (ADE) and (2) original T cell antigenic sin. In this work, we explored the first hypothesis through mathematical modeling. The proposed model reproduces the dynamic of susceptible and infected target cells and dengue virus in scenarios of infection-neutralizing and infection-enhancing antibody competition induced by two distinct serotypes of the dengue virus during secondary infection. The enhancement and neutralization functions are derived from basic concepts of chemical reactions and used to mimic binding to the virus by two distinct populations of antibodies. The analytic study of the model showed the existence of two equilibriums: a disease-free equilibrium and an endemic one. Using the concept of the basic reproduction number [Formula: see text], we performed the asymptotic stability analysis for the two equilibriums. To measure the severity of the disease, we considered the maximum value of infected cells as well as the time when this maximum is reached. We observed that it corresponds to the time when the maximum enhancing activity for the infection occurs. This critical time was calculated from the model to be a few days after the occurrence of the infection, which corresponds to what is observed in the literature. Finally, using as output [Formula: see text], we were able to rank the contribution of each parameter of the model. In particular, we highlighted that the cross-reactive antibody responses may be responsible for the disease enhancement during secondary heterologous dengue infection.
Collapse
Affiliation(s)
- Felipe de A Camargo
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, 18618-689, Brazil
| | - Mostafa Adimy
- Inria, Institut Camille Jordan, Université de Lyon, Université Lyon 1, 43 Bd. du 11 novembre 1918, 69200, Villeurbanne Cedex, France
| | - Lourdes Esteva
- Departamento de Matemáticas, Facultad de Ciencias, UNAM, 04510, Mexico, D.F., Mexico
| | - Clémence Métayer
- Inria, Institut Camille Jordan, Université de Lyon, Université Lyon 1, 43 Bd. du 11 novembre 1918, 69200, Villeurbanne Cedex, France
| | - Cláudia P Ferreira
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, 18618-689, Brazil.
| |
Collapse
|
39
|
Alomar AA, Alto BW. Mosquito responses to lethal and nonlethal effects of predation and an insect growth regulator. Ecosphere 2021. [DOI: 10.1002/ecs2.3452] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Abdullah A. Alomar
- Entomology and Nematology Department Florida Medical Entomology Laboratory Institute of Food and Agricultural Sciences University of Florida Vero Beach Florida32962USA
| | - Barry W. Alto
- Entomology and Nematology Department Florida Medical Entomology Laboratory Institute of Food and Agricultural Sciences University of Florida Vero Beach Florida32962USA
| |
Collapse
|
40
|
Oliva CF, Benedict MQ, Collins CM, Baldet T, Bellini R, Bossin H, Bouyer J, Corbel V, Facchinelli L, Fouque F, Geier M, Michaelakis A, Roiz D, Simard F, Tur C, Gouagna LC. Sterile Insect Technique (SIT) against Aedes Species Mosquitoes: A Roadmap and Good Practice Framework for Designing, Implementing and Evaluating Pilot Field Trials. INSECTS 2021; 12:191. [PMID: 33668374 PMCID: PMC7996155 DOI: 10.3390/insects12030191] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/16/2021] [Accepted: 02/20/2021] [Indexed: 12/20/2022]
Abstract
Aedes albopictus and Aedes aegypti are invasive mosquito species that impose a substantial risk to human health. To control the abundance and spread of these arboviral pathogen vectors, the sterile insect technique (SIT) is emerging as a powerful complement to most commonly-used approaches, in part, because this technique is ecologically benign, specific, and non-persistent in the environment if releases are stopped. Because SIT and other similar vector control strategies are becoming of increasing interest to many countries, we offer here a pragmatic and accessible 'roadmap' for the pre-pilot and pilot phases to guide any interested party. This will support stakeholders, non-specialist scientists, implementers, and decision-makers. Applying these concepts will ensure, given adequate resources, a sound basis for local field trialing and for developing experience with the technique in readiness for potential operational deployment. This synthesis is based on the available literature, in addition to the experience and current knowledge of the expert contributing authors in this field. We describe a typical path to successful pilot testing, with the four concurrent development streams of Laboratory, Field, Stakeholder Relations, and the Business and Compliance Case. We provide a graphic framework with criteria that must be met in order to proceed.
Collapse
Affiliation(s)
- Clélia F. Oliva
- Centre Technique Interprofessionnel des Fruits et Légumes (CTIFL), Centre Opérationnel de Balandran, 751 Chemin de Balandran, 30127 Bellegarde, France;
- Collectif TIS (Technique de l’Insecte Stérile), 751 Chemin de Balandran, 30127 Bellegarde, France
| | | | - C Matilda Collins
- Centre for Environmental Policy, Imperial College London, London SW7 1NE, UK;
| | - Thierry Baldet
- ASTRE (Animal, Santé, Territoires, Risques, Ecosystèmes), Cirad, Univ Montpellier, 34398 Montpellier, France; (T.B.); (J.B.)
| | - Romeo Bellini
- Centro Agricoltura Ambiente “Giorgio Nicoli”, S.r.l. Via Sant’Agata, 835, 40014 Crevalcore, Italy;
| | - Hervé Bossin
- Institut Louis Malardé, Papeete, 98713 Tahiti, French Polynesia;
| | - Jérémy Bouyer
- ASTRE (Animal, Santé, Territoires, Risques, Ecosystèmes), Cirad, Univ Montpellier, 34398 Montpellier, France; (T.B.); (J.B.)
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, IAEA Vienna, Wagramer Strasse 5, 1400 Vienna, Austria
| | - Vincent Corbel
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| | - Luca Facchinelli
- Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK;
| | - Florence Fouque
- TDR (Special Programme for Research and Training in Tropical Diseases), WHO, 20 Avenue Appia, 1121 Geneva, Switzerland;
| | - Martin Geier
- Biogents AG, Weissenburgstr. 22, 93055 Regensburg, Germany;
| | - Antonios Michaelakis
- Benaki Phytopathological Institute. 8, S. Delta str., Kifissia, 14561 Athens, Greece;
| | - David Roiz
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| | - Frédéric Simard
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| | - Carlos Tur
- Grupo Tragsa–KM. 4,5 Bajo, A28476208-EMPRE, Moncada, 46113 Valencia, Spain;
| | - Louis-Clément Gouagna
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| |
Collapse
|
41
|
Sexual Competitiveness and Induced Egg Sterility by Aedes aegypti and Aedes albopictus Gamma-Irradiated Males: A Laboratory and Field Study in Mexico. INSECTS 2021; 12:insects12020145. [PMID: 33567551 PMCID: PMC7915704 DOI: 10.3390/insects12020145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/29/2021] [Accepted: 01/29/2021] [Indexed: 12/31/2022]
Abstract
Simple Summary The sterile insect technique (SIT) involves the release of massive numbers of male insects that have been sterilized by irradiation treatment during their development. Wild females that mate with sterilized males are not able to produce offspring, resulting in rapid decline in the target insect population over a large area. The success of this technique depends on the ratio of wild:sterile males achieved following male releases and the ability of sterile males to mate with wild females, i.e., their sexual competitiveness compared to fertile wild male insects. There is growing interest in applying SIT to the area-wide control of mosquitoes, such as Aedes aegypti and Aedes albopictus, that transmit important human diseases caused by dengue, chikungunya, and Zika viruses. In the present study, the sexual competitiveness of both mosquito species was affected by irradiation treatments but did not vary greatly with different ratios of fertile:sterile males in mating cages. Most importantly, the fertility of eggs was greatly reduced when more sterile males were present in mating cages, resulting in an 88% decrease in the production of fertile eggs by both species of mosquitoes in some experiments. We will use these results to perform small-scale trials in rural villages frequently affected by outbreaks of mosquito-borne diseases in southern Mexico. Abstract The sterile insect technique may prove useful for the suppression of mosquito vectors of medical importance in regions where arboviruses pose a serious public health threat. In the present study, we examined the effects of sterilizing irradiation doses across different ratios of fertile:irradiated males on the mating competitiveness of Ae. aegypti and Ae. albopictus under laboratory and field-cage conditions. For both species, the percentage of females inseminated and the number of eggs laid over two gonotrophic cycles varied significantly in mating treatments involving 1:1, 1:5, and 1:10 fertile:irradiated males compared to controls of entirely fertile or entirely irradiated males but was not generally affected by the irradiation dose. Egg hatching was negatively affected in females exposed to increasing proportions of irradiated males in both laboratory and field cages. Male competitiveness (Fried’s index) values varied from 0.19 to 0.58 in the laboratory and were between 0.09 and 1.0 in field cages, depending on th species. Competitiveness values were negatively affected by th eirradiation dose in both species under field-cage conditions, whereas in the laboratory, Ae. albopictus was sensitive to the dose but Ae. aegypti was not. In general, male competitiveness was similar across all mating regimes. Most importantly, induced egg sterility was positively correlated with the proportion of irradiated males present in the mating treatments, reaching a maximum of 88% under field-cage conditions for both Ae. aegypti and Ae. albopictus males treated with 50 and 40 Gy irradiation, respectively. These results indicate that sterile males produced at our facility are suitable and competitive enough for field pilot SIT projects and provide guidance to decide the optimal sterile:fertile ratios.
Collapse
|
42
|
França LP, Amaral ACF, Ramos ADS, Ferreira JLP, Maria ACB, Oliveira KMT, Araujo ES, Branches ADS, Silva JN, Silva NG, Barros GDA, Chaves FCM, Tadei WP, Silva JRDA. Piper capitarianum essential oil: a promising insecticidal agent for the management of Aedes aegypti and Aedes albopictus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:9760-9776. [PMID: 33159226 DOI: 10.1007/s11356-020-11148-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/05/2020] [Indexed: 06/11/2023]
Abstract
Mosquitoes are responsible for serious public health problems worldwide, and as such, Aedes aegypti and Aedes albopictus are important vectors in the transmission of dengue, chikungunya, and Zika in Brazil and other countries of the world. Due to growing resistance to chemical insecticides among populations of vectors, environmentally friendly strategies for vector management are receiving ever more attention. Essential oils (EOs) extracted from plants have activities against insects with multiple mechanisms of action. These mechanisms hinder the development of resistance, and have the advantages of being less toxicity and biodegradable. Thus, the present study aimed to evaluate the chemical composition of the EOs obtained from Piper capitarianum Yunck, as well as evaluating their insecticidal potential against Aedes aegypti and A. albopictus, and their toxicity in relation to Artemia salina. The yields of the EOs extracted from the leaves, stems, and inflorescences of P. capitarianum were 1.2%, 0.9%, and 0.6%, respectively, and their main constituents were trans-caryophyllene (20.0%), α-humulene (10.2%), β-myrcene (10.5%), α-selinene (7.2%), and linalool (6.0%). The EO from the inflorescences was the most active against A. aegypti and A. albopictus, and exhibited the respective larvicidal (LC50 = 87.6 μg/mL and 76.1 μg/mL) and adulticide activities (LC50 = 126.2 μg/mL and 124.5 μg/mL). This EO was also the most active in the inhibition of AChE, since it presented an IC50 value of 14.2 μg/mL. Its larvicidal effect was observed under optical and scanning electron microscopy. Additionally, non-toxic effects against A. salina were observed. Docking modeling of trans-caryophyllene and α-humulene on sterol carrier protein-2 (SCP-2) suggests that both molecules have affinity with the active site of the enzyme, which indicates a possible mechanism of action. Therefore, the essential oil of P. capitarianum may be used in the development of new insecticide targets for the control of A. aegypti and A. albopictus in the Amazonian environment.
Collapse
Affiliation(s)
- Leandro P França
- Chromatography Laboratory, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | - Ana Claudia F Amaral
- Laboratory of Medicinal Plants and Derivatives, Department of Chemistry of Natural Products, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Aline de S Ramos
- Laboratory of Medicinal Plants and Derivatives, Department of Chemistry of Natural Products, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - José Luiz P Ferreira
- Laboratory of Medicinal Plants and Derivatives, Department of Chemistry of Natural Products, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Ana Clara B Maria
- Laboratory of Medicinal Plants and Derivatives, Department of Chemistry of Natural Products, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Kelson Mota T Oliveira
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | - Earle S Araujo
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | - Adjane Dalvana S Branches
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | - Jonathas N Silva
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | - Noam G Silva
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | - Gabriel de A Barros
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, Federal University of Amazonas, Manaus, AM, Brazil
| | | | - Wanderli P Tadei
- Laboratory of Malaria and Dengue, Institute for Research in the Amazon, Manaus, AM, Brazil
| | | |
Collapse
|
43
|
Kojom Foko LP, Eya'ane Meva F, Eboumbou Moukoko CE, Ntoumba AA, Ekoko WE, Ebanda Kedi Belle P, Ndjouondo GP, Bunda GW, Lehman LG. Green-synthesized metal nanoparticles for mosquito control: A systematic review about their toxicity on non-target organisms. Acta Trop 2021; 214:105792. [PMID: 33310077 DOI: 10.1016/j.actatropica.2020.105792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/02/2020] [Accepted: 12/02/2020] [Indexed: 01/14/2023]
Abstract
Studies capturing the high efficiency of green-synthesized metal nanoparticles (NPs) in targeting mosquito vectors of the world's main infectious diseases suggest the NPs' possible utilization as bio-insecticides. However, it is necessary to confirm that these potential bio-insecticides are not harmful to non-target organisms that are often sympatric and natural enemies of the vectors of these diseases. In this systematic review, we comprehensively analyse the content of 56 publications focused on the potentially deleterious effects of NPs on these non-target organisms. Current research on biosynthesised NPs, characterization, and impact on mosquito vectors and non-target larvivorous organisms is reviewed and critically discussed. Finally, we pinpoint some major challenges that merit future investigation. Plants (87.5%) were mainly used for synthesizing NPs in the studies. NPs were found to be spherical or mainly spherical in shape with a large distribution size. In most of the included studies, NPs showed interesting mosquitocidal activity (LC50 < 50 ppm). Some plant families (e.g., Meliaceae, Poaceae, Lamiaceae) have produced NPs with a particularly high larvicidal and pupicidal activity (LC50 < 10 ppm). Regarding non-target organisms, most of the studies concluded that NPs were safe to them, with boosted predatory activity in NP-treated milieu. In contrast, some studies reported NP-elicited adverse effects (i.e., genotoxic, nuclear, and enzymatic effects) on these non-target organisms. This review outlines the promising mosquitocidal effects of biosynthesized NPs, recognizing that NPs' potential usage is currently limited by the harm NPs are thought pose to non-target organism. It is of utmost importance to investigate green NPs to determine whether laboratory findings have applications in the real world.
Collapse
|
44
|
Alomar AA, Eastmond BH, Alto BW. The effects of exposure to pyriproxyfen and predation on Zika virus infection and transmission in Aedes aegypti. PLoS Negl Trop Dis 2020; 14:e0008846. [PMID: 33201875 PMCID: PMC7707533 DOI: 10.1371/journal.pntd.0008846] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 12/01/2020] [Accepted: 09/24/2020] [Indexed: 12/21/2022] Open
Abstract
Zika virus (ZIKV) is an emerging mosquito-borne pathogen that can cause global public health threats. In the absence of effective antiviral medications, prevention measures rely largely on reducing the number of adult mosquito vectors by targeting juvenile stages. Despite the importance of juvenile mosquito control measures in reducing adult population size, a full understanding of the effects of these measures in determining mosquito phenotypic traits and in mosquito-arbovirus interactions is poorly understood. Pyriproxyfen is a juvenile hormone analog that primarily blocks adult emergence, but does not cause mortality in larvae. This mechanism has the potential to work in combination with other juvenile sources of mortality in nature such as predation to affect mosquito populations. Here, we experimentally evaluated the effects of juvenile exposure to pyriproxyfen and predatory mosquito Toxorhynchites rutilus on Aedes aegypti phenotypes including susceptibility to ZIKV infection and transmission. We discovered that combined effects of pyriproxyfen and Tx. rutilus led to higher inhibition of adult emergence in Ae. aegypti than observed in pyriproxyfen or Tx. rutilus treatments alone. Adult body size was larger in treatments containing Tx. rutilus and in treatments mimicking the daily mortality of predation compared to control or pyriproxyfen treatments. Susceptibility to infection with ZIKV in Ae. aegypti was reduced in predator treatment relative to those exposed to pyriproxyfen. Disseminated infection, transmission, and titers of ZIKV in Ae. aegypti were similar in all treatments relative to controls. Our data suggest that the combination of pyriproxyfen and Tx. rutilus can inhibit adult Ae. aegypti emergence but may confer a fitness advantage in survivors and does not inhibit their vector competence for ZIKV relative to controls. Understanding the ultimate consequences of juvenile mosquito control measures on subsequent adults’ ability to transmit pathogens is critical to fully understand their overall impacts. Mosquito control approaches primarily depend on lowering the number of potential adult mosquito vectors by inhibiting juvenile stages to reduce the risk of pathogen transmission. Pyriproxyfen is a juvenile hormone analog that inhibits the emergence of adult mosquitoes by interrupting metamorphosis, but does not target larvae. This mechanism allows natural sources of mortality like predation to act in combination with pyriproxyfen to affect mosquito population size. Here, we determined the effects of juvenile exposure to pyriproxyfen and predatory mosquito Toxorhynchites rutilus on adult Aedes aegypti traits, including infection with Zika virus. Combined effects of pyriproxyfen and Tx. rutilus led to strong inhibition of adult emergence in Ae. aegypti. Treatments containing predators or those mimicking the daily mortality of predation produced larger sized adults. Susceptibility to ZIKV infection was lowest in the predator treatment and highest in the pyriproxyfen treatment. Disseminated infection, transmission, and viral titers of ZIKV were similar between treatments. Our data suggest that the combination of pyriproxyfen and predators can enhance inhibition of adult Ae. aegypti emergence, but survivors may have fitness benefits such being larger mosquitoes. Understanding the consequences of control approaches in mosquito-pathogen interactions will assist to evaluate their suitability in mosquito control programs.
Collapse
Affiliation(s)
- Abdullah A. Alomar
- University of Florida, Department of Entomology and Nematology, Florida Medical Entomology Laboratory, Vero Beach, Florida, United States of America
| | - Bradley H. Eastmond
- University of Florida, Department of Entomology and Nematology, Florida Medical Entomology Laboratory, Vero Beach, Florida, United States of America
| | - Barry W. Alto
- University of Florida, Department of Entomology and Nematology, Florida Medical Entomology Laboratory, Vero Beach, Florida, United States of America
- * E-mail:
| |
Collapse
|
45
|
Vieira-Neta MRA, Soares-da-Silva J, Viana JL, Silva MC, Tadei WP, Pinheiro VCS. Strain of Bacillus thuringiensis from Restinga, toxic to Aedes (Stegomyia) aegypti (Linnaeus) (Diptera, Culicidae). BRAZ J BIOL 2020; 81:872-880. [PMID: 33053121 DOI: 10.1590/1519-6984.228790] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 04/20/2020] [Indexed: 11/22/2022] Open
Abstract
Bacillus thuringiensis is the most commonly used entomopathogen in the control of Aedes aegypti, which is a vector for different etiological agents that cause serious infections in humans. Several studies aim to isolate strains of this bacterium from different environments, with the perspective of selecting isolates with larvicidal activity for mosquitoes. Aiming at the insecticidal action of B. thuringiensis, the present study aimed to prospect B. thuringiensis of restinga and mangrove soils from the state of Maranhão, Brazil, with toxic potential for use in the biological control of Ae. aegypti. Bioassays were performed to determine the entomopathogenic activity of the bacilli against Ae. aegypti and lethal concentrations (LC50 and CL90) were estimated after the tests. Polymerase Chain Reaction and SDS-PAGE techniques were performed to verify the gene and protein content of the isolates, respectively. The soil of the mangrove and restinga ecosystems showed potential for obtaining B. thuringiensis. This isolate, in addition to having proteins with molecular mass similar to the toxins Cry and Cyt, also presented several diptera-specific genes cry and cyt, demonstrating that it has high potential to be used in the biological control of Ae. aegypti.
Collapse
Affiliation(s)
- M R A Vieira-Neta
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Biodiversidade, Ambiente e Saúde - PPGBAS, Caxias, MA, Brasil
| | - J Soares-da-Silva
- Universidade Federal do Maranhão - UFMA, Coordenação de Ciências Naturais/Biologia, Codó, MA, Brasil
| | - J L Viana
- Universidade do Estado do Amazonas - UEA, Programa de Pós-graduação em Biodiversidade e Biotecnologia da Rede BIONORTE - PPG BIONORTE, Manaus, AM, Brasil
| | - M C Silva
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Departamento de Química e Biologia, Caxias, MA, Brasil
| | - W P Tadei
- Instituto Nacional de Pesquisas da Amazônia - INPA, Laboratório de Malária e Dengue, Programa de Pós-graduação em Entomologia, Manaus, AM, Brasil
| | - V C S Pinheiro
- Universidade Estadual do Maranhão - UEMA, Centro de Estudos Superiores de Caxias - CESC, Departamento de Química e Biologia, Laboratório de Entomologia Médica - LABEM, Caxias, MA, Brasil
| |
Collapse
|
46
|
Madzokere ET, Hallgren W, Sahin O, Webster JA, Webb CE, Mackey B, Herrero LJ. Integrating statistical and mechanistic approaches with biotic and environmental variables improves model predictions of the impact of climate and land-use changes on future mosquito-vector abundance, diversity and distributions in Australia. Parasit Vectors 2020; 13:484. [PMID: 32967711 PMCID: PMC7510059 DOI: 10.1186/s13071-020-04360-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 09/11/2020] [Indexed: 02/07/2023] Open
Abstract
Changes to Australia's climate and land-use patterns could result in expanded spatial and temporal distributions of endemic mosquito vectors including Aedes and Culex species that transmit medically important arboviruses. Climate and land-use changes greatly influence the suitability of habitats for mosquitoes and their behaviors such as mating, feeding and oviposition. Changes in these behaviors in turn determine future species-specific mosquito diversity, distribution and abundance. In this review, we discuss climate and land-use change factors that influence shifts in mosquito distribution ranges. We also discuss the predictive and epidemiological merits of incorporating these factors into a novel integrated statistical (SSDM) and mechanistic species distribution modelling (MSDM) framework. One potentially significant merit of integrated modelling is an improvement in the future surveillance and control of medically relevant endemic mosquito vectors such as Aedes vigilax and Culex annulirostris, implicated in the transmission of many arboviruses such as Ross River virus and Barmah Forest virus, and exotic mosquito vectors such as Aedes aegypti and Aedes albopictus. We conducted a focused literature search to explore the merits of integrating SSDMs and MSDMs with biotic and environmental variables to better predict the future range of endemic mosquito vectors. We show that an integrated framework utilising both SSDMs and MSDMs can improve future mosquito-vector species distribution projections in Australia. We recommend consideration of climate and environmental change projections in the process of developing land-use plans as this directly impacts mosquito-vector distribution and larvae abundance. We also urge laboratory, field-based researchers and modellers to combine these modelling approaches. Having many different variations of integrated (SDM) modelling frameworks could help to enhance the management of endemic mosquitoes in Australia. Enhanced mosquito management measures could in turn lead to lower arbovirus spread and disease notification rates.
Collapse
Affiliation(s)
- Eugene T. Madzokere
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, QLD 4215 Australia
| | - Willow Hallgren
- Environmental Futures Research Institute, Griffith School of Environment, Gold Coast campus, Griffith University, Gold Coast, QLD 4222 Australia
| | - Oz Sahin
- Cities Research Institute, Gold Coast campus, Griffith University, Gold Coast, QLD 4222 Australia
| | - Julie A. Webster
- QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, QLD 4006 Australia
| | - Cameron E. Webb
- Department of Medical Entomology, NSW Health Pathology, ICPMR, Westmead Hospital, Westmead, NSW 2145 Australia
- Marie Bashir Institute of Infectious Diseases and Biosecurity, University of Sydney, Sydney, NSW 2006 Australia
| | - Brendan Mackey
- Griffith Climate Change Response Program, Griffith School of Environment, Gold Coast campus, Griffith University, Gold Coast, QLD 4222 Australia
| | - Lara J. Herrero
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, QLD 4215 Australia
| |
Collapse
|
47
|
Pires S, Alves J, Dia I, Gómez LF. Susceptibility of mosquito vectors of the city of Praia, Cabo Verde, to Temephos and Bacillus thuringiensis var israelensis. PLoS One 2020; 15:e0234242. [PMID: 32520941 PMCID: PMC7286513 DOI: 10.1371/journal.pone.0234242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 05/21/2020] [Indexed: 11/18/2022] Open
Abstract
Many vector-borne diseases circulate in the Republic of Cabo Verde. These include malaria during the colonization of the archipelago by the Portuguese explorers and several arboviruses such as yellow fever (now eradicated), dengue and zika. To control these vector-borne diseases, an integrated vector control program was implemented. The main targeted mosquito vectors are Aedes aegypti and Anopheles arabiensis, and in a lesser extent the potential arbovirus vector Culex pipiens s.l. The main control strategy is focused on mosquito aquatic stages using diesel oil and Temephos. This latter has been applied in Cabo Verde since 1979. Its continuous use was followed by the emergence of resistance in mosquito populations. We investigated the current susceptibility to Temephos of the three potential mosquito vectors of Cabo Verde through bioassays tests. Our results showed various degrees of susceptibility with 24h post-exposure mortality rates ranging from 43.1% to 90.9% using WHO diagnostic doses. A full susceptibility was however observed with Bacillus thurigiensis var israelensis with mortality rates from 99.6% to 100%.
Collapse
Affiliation(s)
- Sílvia Pires
- Unidade de Ciências da Natureza, da Vida e do Ambiente, Universidade Jean Piaget de Cabo Verde, Praia, Cabo Verde
| | - Joana Alves
- Instituto Nacional de Saúde Pública, Ministério da Saúde, Praia, Cabo Verde
| | - Ibrahima Dia
- Unité d’entomologie médicale, Institut Pasteur de Dakar, Dakar, Senegal
| | - Lara F. Gómez
- Unidade de Ciências da Natureza, da Vida e do Ambiente, Universidade Jean Piaget de Cabo Verde, Praia, Cabo Verde
- * E-mail:
| |
Collapse
|
48
|
Manwill PK, Kalsi M, Wu S, Martinez Rodriguez EJ, Cheng X, Piermarini PM, Rakotondraibe HL. Semi-synthetic cinnamodial analogues: Structural insights into the insecticidal and antifeedant activities of drimane sesquiterpenes against the mosquito Aedes aegypti. PLoS Negl Trop Dis 2020; 14:e0008073. [PMID: 32101555 PMCID: PMC7062286 DOI: 10.1371/journal.pntd.0008073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 03/09/2020] [Accepted: 01/18/2020] [Indexed: 11/28/2022] Open
Abstract
The Aedes aegypti mosquito serves as a major vector for viral diseases, such as dengue, chikungunya, and Zika, which are spreading across the globe and threatening public health. In addition to increased vector transmission, the prevalence of insecticide-resistant mosquitoes is also on the rise, thus solidifying the need for new, safe and effective insecticides to control mosquito populations. We recently discovered that cinnamodial, a unique drimane sesquiterpene dialdehyde of the Malagasy medicinal plant Cinnamosma fragrans, exhibited significant larval and adult toxicity to Ae. aegypti and was more efficacious than DEET-the gold standard for insect repellents-at repelling adult female Ae. aegypti from blood feeding. In this study several semi-synthetic analogues of cinnamodial were prepared to probe the structure-activity relationship (SAR) for larvicidal, adulticidal and antifeedant activity against Ae. aegypti. Initial efforts were focused on modification of the dialdehyde functionality to produce more stable active analogues and to understand the importance of the 1,4-dialdehyde and the α,ß-unsaturated carbonyl in the observed bioactivity of cinnamodial against mosquitoes. This study represents the first investigation into the SAR of cinnamodial as an insecticide and antifeedant against the medically important Ae. aegypti mosquito.
Collapse
Affiliation(s)
- Preston K. Manwill
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
- Center for Applied Plant Sciences, The Ohio State University, Columbus, Ohio, United States of America
| | - Megha Kalsi
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| | - Sijin Wu
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
| | - Erick J. Martinez Rodriguez
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| | - Xiaolin Cheng
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
| | - Peter M. Piermarini
- Center for Applied Plant Sciences, The Ohio State University, Columbus, Ohio, United States of America
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| | - Harinantenaina L. Rakotondraibe
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
- Center for Applied Plant Sciences, The Ohio State University, Columbus, Ohio, United States of America
| |
Collapse
|
49
|
Lee JY, Woo RM, Choi CJ, Shin TY, Gwak WS, Woo SD. Beauveria bassiana for the simultaneous control of Aedes albopictus and Culex pipiens mosquito adults shows high conidia persistence and productivity. AMB Express 2019; 9:206. [PMID: 31865499 PMCID: PMC6925604 DOI: 10.1186/s13568-019-0933-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 12/13/2019] [Indexed: 12/12/2022] Open
Abstract
This study was conducted to determine the optimal entomopathogenic fungus for the simultaneous control of the adults of two mosquito species, Aedes albopictus and Culex pipiens. The pathogenicity and virulence against the two species of mosquitoes were evaluated by using 30 isolates of Beauveria bassiana, an entomopathogenic fungus isolated from Korea that has high thermotolerance and UV-B tolerance. Regarding pathogenicity, 23 isolates were pathogenic to Ae. albopictus and 12 isolates were pathogenic to Cx. pipiens; Ae. albopictus adults were more susceptible to B. bassiana than Cx. pipiens adults. Among the isolates, 6 isolates that were simultaneously pathogenic to the two species of mosquitoes were used to evaluate virulence and conidia productivity. B. bassiana CN6T1W2 and JN5R1W1 had higher virulence than the other isolates, and they were more virulent in Ae. albopictus than inCx. pipiens. The conidia productivity of B. bassiana JN5R1W1 on millet grain medium was higher than that of B. bassiana CN6T1W2. Based on these results, B. bassiana JN5R1W1 was selected as the most efficient isolate for the simultaneous control of the two mosquito species. B. bassiana JN5R1W1 can be used effectively in the development of fungal insecticides to simultaneously control Ae. albopictus and Cx. pipiens adults with similar distribution areas.
Collapse
|
50
|
Alfano N, Tagliapietra V, Rosso F, Manica M, Arnoldi D, Pindo M, Rizzoli A. Changes in Microbiota Across Developmental Stages of Aedes koreicus, an Invasive Mosquito Vector in Europe: Indications for Microbiota-Based Control Strategies. Front Microbiol 2019; 10:2832. [PMID: 31921019 PMCID: PMC6914824 DOI: 10.3389/fmicb.2019.02832] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/21/2019] [Indexed: 11/29/2022] Open
Abstract
Since it has been understood that gut microbiota of vector mosquitoes can influence their vector competence, efforts have been undertaken to develop new control strategies based on host microbiota manipulation, and aimed at suppressing the vector population or replacing it with a less competent one. For the proper design of such control strategies it is necessary to know the microbiota composition of the target vector species, how it is acquired, and how it changes throughout the host’s life cycle. In this study, 16S rRNA amplicon high-throughput sequencing was used to characterize the changes in microbiota from the aquatic environment (larval breeding sites) to the different developmental stages of field-collected Aedes koreicus in Italy, an emerging invasive mosquito species in Europe and a potential vector of several pathogens. The bacterial communities of the aquatic breeding sites, larvae, pupae and adults showed distinctive structures to one another. Indeed, 84% of community members were unique to a given sample type. Nevertheless, almost 40% of the sequences generated were assigned to bacteria detected in all sample types, suggesting the importance of bacteria transstadially transmitted from water to the adult stage in constituting mosquito microbiota. Among these, genus C39 largely constituted water microbiota, family Burkholderiaceae was the most abundant in larvae and pupae, and genus Asaia dominated adult communities. In addition, Asaia constituted a core microbiota across all sample types. Our results suggest that the microbiota of Ae. koreicus mosquitoes is composed by a community which derives from the aquatic bacteria of the larval breeding sites, is then filtered by the larval gut, where only certain members are able to persist, rearranged by metamorphosis and finally modified by the change in diet at the adult stage. Understanding how the microbiota of Ae. koreicus changes through the mosquito life cycle represents a first step in selecting bacterial candidates for use in microbiota-based intervention measures for this species. The properties which Asaia exhibits in this species, such as dominance, high prevalence and transstadial transmission, prevent the use of Wolbachia but make Asaia an ideal candidate for paratransgenesis.
Collapse
Affiliation(s)
- Niccolò Alfano
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | | | - Fausta Rosso
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Mattia Manica
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Daniele Arnoldi
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Massimo Pindo
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Annapaola Rizzoli
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| |
Collapse
|