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Lombardi G, Lampazzi E, Calvitti M. Incompatible insect technique: insights on potential outcomes of releasing contaminant females: a proof of concept under semi-field conditions. PEST MANAGEMENT SCIENCE 2024. [PMID: 39031863 DOI: 10.1002/ps.8263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 07/22/2024]
Abstract
BACKGROUND Releasing large numbers of Aedes albopictus males, carrying the artificially introduced Wolbachia 'wPip' strain, results in a decrease in the reproductive capacity of wild females due to a phenomenon known as cytoplasmic incompatibility (CI). This vector control strategy is referred to as the incompatible insect technique (IIT). However, its widespread implementation faces various challenges, including the complexity of removing fertile females from the males intended for release. Here, we present the results of semi-field experiments comparing the impact of minimal female co-release on two IIT modes: unidirectional CI-based (UnCI IIT) and bidirectional CI-based (BiCI IIT), specifically targeting Ae. albopictus. RESULTS The contamination of 'wPip' infected females (2%) during male releases significantly weakened the overall effectiveness of IIT, emphasizing the need for thorough sex separation. Specifically, with UnCI IIT, despite the low rate of co-released females, there was a gradual rise in 'wPip' infection frequency, resulting in more compatible mating and subsequently higher rates of egg hatching. Conversely, this pattern was effectively mitigated in BiCI IIT owing to the reciprocal sterility between the wild-type and the 'wPip' infected populations. CONCLUSION Through an experimental approach, conducted in a semi-field setting, we have contributed to advancing scientific understanding regarding the potential outcomes of implementing the IIT strategy in the absence of a complete sexing system. The results suggest that safety measures for mitigating the potential impacts of co-released females can be tailored according to the specific type of IIT being utilized. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Giulia Lombardi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Elena Lampazzi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Maurizio Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
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2
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Caputo B, Moretti R, Virgillito C, Manica M, Lampazzi E, Lombardi G, Serini P, Pichler V, Beebe NW, Della Torre A, Calvitti M. A bacterium against the tiger: further evidence of the potential of noninundative releases of males with manipulated Wolbachia infection in reducing fertility of Aedes albopictus field populations in Italy. PEST MANAGEMENT SCIENCE 2023; 79:3167-3176. [PMID: 37022600 DOI: 10.1002/ps.7495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 05/10/2023]
Abstract
BACKGROUND Incompatible insect technique (IIT) is a population suppression approach based on the release of males with manipulated Wolbachia infection inducing egg inviability in wild females. We here present results of multiple field releases of incompatible ARwP males carried out in 2019 in a 2.7-ha green area within urban Rome (Italy) to assess the effect on Aedes albopictus egg viability. Data are compared with results obtained in 2018, when the approach was tested for the first time in Europe. RESULTS An average of 4674 ARwP males were released weekly for 7 weeks, resulting in a mean ARwP:wild male ratio of 1.1:1 (versus 0.7:1 in 2018). Egg-viability dynamics in ovitraps significantly varied between treated and control sites, with an estimated overall reduction of 35% (versus 15% in 2018). The estimated proportion of females classified as mated with ARwP males was 41.8% and the viability rate of eggs laid by these females (9.5%) was on average significantly lower than that of females only mated with wild males (87.8%); however, high variability in fertility was observed. Values of ARwP male competitiveness were 0.36 and 0.73 based on the overall viability rate of eggs in ovitraps and on female fertility, respectively; thus, well above the conventional 0.2 threshold for an effective suppressive impact in the field. CONCLUSIONS Results further support the potential of IIT as a tool to contribute to Ae. albopictus control in the urban context, stressing the need for larger field trials to evaluate the cost-efficacy of the approach in temperate regions. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Beniamino Caputo
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, Rome, Italy
| | - Riccardo Moretti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Chiara Virgillito
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, Rome, Italy
| | - Mattia Manica
- Center for Health Emergencies, Fondazione Bruno Kessler, Trento, Italy
| | - Elena Lampazzi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Giulia Lombardi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Paola Serini
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, Rome, Italy
| | - Verena Pichler
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, Rome, Italy
| | - Nigel W Beebe
- School of Biological Sciences, University of Queensland, & CSIRO, Brisbane, Australia
| | - Alessandra Della Torre
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, Rome, Italy
| | - Maurizio Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
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Li Y, Sun Y, Zou J, Zhong D, Liu R, Zhu C, Li W, Zhou Y, Cui L, Zhou G, Lu G, Li T. Characterizing the Wolbachia infection in field-collected Culicidae mosquitoes from Hainan Province, China. Parasit Vectors 2023; 16:128. [PMID: 37060070 PMCID: PMC10103416 DOI: 10.1186/s13071-023-05719-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/28/2023] [Indexed: 04/16/2023] Open
Abstract
BACKGROUND Mosquitoes are vectors of many pathogens, such as malaria, dengue virus, yellow fever virus, filaria and Japanese encephalitis virus. Wolbachia are capable of inducing a wide range of reproductive abnormalities in their hosts, such as cytoplasmic incompatibility. Wolbachia has been proposed as a tool to modify mosquitoes that are resistant to pathogen infection as an alternative vector control strategy. This study aimed to determine natural Wolbachia infections in different mosquito species across Hainan Province, China. METHODS Adult mosquitoes were collected using light traps, human landing catches and aspirators in five areas in Hainan Province from May 2020 to November 2021. Species were identified based on morphological characteristics, species-specific PCR and DNA barcoding of cox1 assays. Molecular classification of species and phylogenetic analyses of Wolbachia infections were conducted based on the sequences from PCR products of cox1, wsp, 16S rRNA and FtsZ gene segments. RESULTS A total of 413 female adult mosquitoes representing 15 species were identified molecularly and analyzed. Four mosquito species (Aedes albopictus, Culex quinquefasciatus, Armigeres subalbatus and Culex gelidus) were positive for Wolbachia infection. The overall Wolbachia infection rate for all mosquitoes tested in this study was 36.1% but varied among species. Wolbachia types A, B and mixed infections of A × B were detected in Ae. albopictus mosquitoes. A total of five wsp haplotypes, six FtsZ haplotypes and six 16S rRNA haplotypes were detected from Wolbachia infections. Phylogenetic tree analysis of wsp sequences classified them into three groups (type A, B and C) of Wolbachia strains compared to two groups each for FtsZ and 16S rRNA sequences. A novel type C Wolbachia strain was detected in Cx. gelidus by both single locus wsp gene and the combination of three genes. CONCLUSION Our study revealed the prevalence and distribution of Wolbachia in mosquitoes from Hainan Province, China. Knowledge of the prevalence and diversity of Wolbachia strains in local mosquito populations will provide part of the baseline information required for current and future Wolbachia-based vector control approaches to be conducted in Hainan Province.
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Affiliation(s)
- Yiji Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Tropical Diseases Research Center, Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, 571199, China
| | - Yingbo Sun
- Tropical Diseases Research Center, Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Jiaquan Zou
- Tropical Diseases Research Center, Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Daibin Zhong
- Program in Public Health, College of Health Sciences, University of California at Irvine, Irvine, CA, 92617, USA
| | - Rui Liu
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China
| | - Chuanlong Zhu
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China
| | - Wenting Li
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China
| | - Yanhe Zhou
- Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Guangzhou, 510623, China
- NHC Key Laboratory of Tropical Disease Control, Hainan Medical University, Haikou, 571199, Hainan, China
| | - Liwang Cui
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Guofa Zhou
- Program in Public Health, College of Health Sciences, University of California at Irvine, Irvine, CA, 92617, USA.
| | - Gang Lu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China.
- Tropical Diseases Research Center, Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China.
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, 571199, China.
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570311, People's Republic of China.
- NHC Key Laboratory of Tropical Disease Control, Hainan Medical University, Haikou, 571199, Hainan, China.
- The Second Affiliated Hospital, Hainan Medical University, Haikou, 570311, China.
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, 571199, People's Republic of China.
| | - Tingting Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China.
- Tropical Diseases Research Center, Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China.
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, 571199, China.
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Moretti R, Lampazzi E, Damiani C, Fabbri G, Lombardi G, Pioli C, Desiderio A, Serrao A, Calvitti M. Increased biting rate and decreased Wolbachia density in irradiated Aedes mosquitoes. Parasit Vectors 2022; 15:67. [PMID: 35209944 PMCID: PMC8867665 DOI: 10.1186/s13071-022-05188-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/01/2022] [Indexed: 11/21/2022] Open
Abstract
Background Releasing considerable numbers of radiation-sterilized males is a promising strategy to suppress mosquito vectors. However, releases may also include small percentages of biting females, which translate to non-negligible numbers when releases are large. Currently, the effects of irradiation on host-seeking and host-biting behaviors have not been exhaustively investigated. Information is also lacking regarding the effects of sterilizing treatment on the endosymbiotic bacterium Wolbachia, which is known to affect the vector competence of infected mosquitos. Methods To ascertain the effects of irradiation on females, the pupae of two Aedes albopictus strains, differing in their natural or artificial Wolbachia infection type, and Aedes aegypti—which is not infected by Wolbachia—were treated with various doses of X-rays and monitored for key fitness parameters and biting behavior over a period of 2 weeks. The effect of radiation on Wolbachia was investigated by quantitative polymerase chain reaction (qPCR) and fluorescence in situ hybridization (FISH) analysis. Results Partial Aedes albopictus female sterility was achieved at 28 Gy, but the number of weekly bites more than doubled compared to that of the controls. Radiation doses of 35 and 45 Gy completely inhibited progeny production but did not significantly affect the survival or flight ability of Ae. albopictus females and caused a tripling of the number of bites per female per week (compared to untreated controls). These results were also confirmed in Ae. aegypti after treatment at 50 Gy. Wolbachia density decreased significantly in 45-Gy-irradiated females, with the greatest decreases in the early irradiation group (26 ± 2-h-old pupae). Wolbachia density also decreased as adults aged. This trend was confirmed in ovaries but not in extra-ovarian tissues. FISH analysis showed a strongly reduced Wolbachia-specific fluorescence in the ovaries of 13 ± 1-day-old females. Conclusions These results suggest that, under sterile insect technique (SIT) programs, the vector capacity of a target population could increase with the frequency of the irradiated females co-released with the sterile males due to an increased biting rate. In the context of successful suppression, the related safety issues are expected to be generally negligible, but they should be conservatively evaluated when large-scale programs relying on imperfect sexing and high overflooding release ratios are run for long periods in areas endemic for arboviral diseases. Also, the effects of irradiation on the vector competence deserve further investigation. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-022-05188-9.
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Affiliation(s)
- Riccardo Moretti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.
| | - Elena Lampazzi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Claudia Damiani
- School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy.,Biovecblok S.r.L, Camerino, MC, Italy
| | - Giulia Fabbri
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.,School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy
| | - Giulia Lombardi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.,School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy
| | - Claudio Pioli
- Laboratory of Biomedical Technologies, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Angiola Desiderio
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Aurelio Serrao
- School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy.,Biovecblok S.r.L, Camerino, MC, Italy
| | - Maurizio Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
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5
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Yu S, Wang J, Luo X, Zheng H, Wang L, Yang X, Wang Y. Transmission-Blocking Strategies Against Malaria Parasites During Their Mosquito Stages. Front Cell Infect Microbiol 2022; 12:820650. [PMID: 35252033 PMCID: PMC8889032 DOI: 10.3389/fcimb.2022.820650] [Citation(s) in RCA: 2] [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: 11/23/2021] [Accepted: 01/31/2022] [Indexed: 11/24/2022] Open
Abstract
Malaria is still the most widespread parasitic disease and causes the most infections globally. Owing to improvements in sanitary conditions and various intervention measures, including the use of antimalarial drugs, the malaria epidemic in many regions of the world has improved significantly in the past 10 years. However, people living in certain underdeveloped areas are still under threat. Even in some well-controlled areas, the decline in malaria infection rates has stagnated or the rates have rebounded because of the emergence and spread of drug-resistant malaria parasites. Thus, new malaria control methods must be developed. As the spread of the Plasmodium parasite is dependent on the part of its life cycle that occurs in mosquitoes, to eliminate the possibility of malaria infections, transmission-blocking strategies against the mosquito stage should be the first choice. In fact, after the gametocyte enters the mosquito body, it undergoes a series of transformation processes over a short period, thus providing numerous potential blocking targets. Many research groups have carried out studies based on targeting the blocking of transmission during the mosquito phase and have achieved excellent results. Meanwhile, the direct killing of mosquitoes could also significantly reduce the probability of malaria infections. Microorganisms that display complex interactions with Plasmodium, such as Wolbachia and gut flora, have shown observable transmission-blocking potential. These could be used as a biological control strategy and play an important part in blocking the transmission of malaria.
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Affiliation(s)
- Shasha Yu
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
| | - Jing Wang
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
| | - Xue Luo
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
| | - Hong Zheng
- Department of Thoracic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Luhan Wang
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
| | - Xuesen Yang
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
| | - Ying Wang
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
- *Correspondence: Ying Wang,
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Hidayanti AK, Gazali A, Tagami Y. Effect of Quorum Sensing Inducers and Inhibitors on Cytoplasmic Incompatibility Induced by Wolbachia (Rickettsiales: Anaplasmataceae) in American Serpentine Leafminer (Diptera: Agromyzidae): Potential Tool for the Incompatible Insect Technique. JOURNAL OF INSECT SCIENCE (ONLINE) 2022; 22:8. [PMID: 35066589 PMCID: PMC8784088 DOI: 10.1093/jisesa/ieab106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Indexed: 06/14/2023]
Abstract
Agricultural crops around the world are attacked by approximately 3,000-10,000 species of pest insect. There is increasing interest in resolving this problem using environmentally friendly approaches. Wolbachia (Hertig), an insect endosymbiont, can modulate host reproduction and offspring sex through cytoplasmic incompatibility (CI). The incompatible insect technique (IIT) based on CI-Wolbachia is a promising biological control method. Previous studies have reported an association between CI and Wolbachia density, which may involve a quorum sensing (QS) mechanism. In this study, we investigated the effect of manipulating QS in Wolbachia using several chemicals including 3O-C12-HSL; C2HSL; spermidine (QS inducers), 4-phenylbutanoyl; and 4-NPO (QS inhibitors) on American serpentine leafminer (Liriomyza trifolii [Burgess]), an agricultural pest. The results showed that inducing QS with 3O-C12-HSL decreased the proportion of hatched eggs and increased Wolbachia density, whereas QS inhibition with 4-phenylbutanoyl had the opposite effects. Thus, manipulating QS in Wolbachia can alter cell density and the proportion of hatched eggs in the host L. trifolii, thereby reducing the number of insect progeny. These findings provide evidence supporting the potential efficacy of the IIT based on CI-Wolbachia for the environmentally friendly control of insect pest populations.
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Affiliation(s)
| | - Achmad Gazali
- School of Biological Environment, UGSAS, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yohsuke Tagami
- Laboratory of Applied Entomology, Faculty of Agriculture, Shizuoka University, 836 Ohya, Suruga-Ku, Shizuoka 422-8529, Japan
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7
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Ross PA. Designing effective Wolbachia release programs for mosquito and arbovirus control. Acta Trop 2021; 222:106045. [PMID: 34273308 DOI: 10.1016/j.actatropica.2021.106045] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 07/04/2021] [Accepted: 07/06/2021] [Indexed: 01/22/2023]
Abstract
Mosquitoes carrying endosymbiotic bacteria called Wolbachia are being released in mosquito and arbovirus control programs around the world through two main approaches: population suppression and population replacement. Open field releases of Wolbachia-infected male mosquitoes have achieved over 95% population suppression by reducing the fertility of wild mosquito populations. The replacement of populations with Wolbachia-infected females is self-sustaining and can greatly reduce local dengue transmission by reducing the vector competence of mosquito populations. Despite many successful interventions, significant questions and challenges lie ahead. Wolbachia, viruses and their mosquito hosts can evolve, leading to uncertainty around the long-term effectiveness of a given Wolbachia strain, while few ecological impacts of Wolbachia releases have been explored. Wolbachia strains are diverse and the choice of strain to release should be made carefully, taking environmental conditions and the release objective into account. Mosquito quality control, thoughtful community awareness programs and long-term monitoring of populations are essential for all types of Wolbachia intervention. Releases of Wolbachia-infected mosquitoes show great promise, but existing control measures remain an important way to reduce the burden of mosquito-borne disease.
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8
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Shropshire JD, Rosenberg R, Bordenstein SR. The impacts of cytoplasmic incompatibility factor (cifA and cifB) genetic variation on phenotypes. Genetics 2021; 217:1-13. [PMID: 33683351 PMCID: PMC8218869 DOI: 10.1093/genetics/iyaa007] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 11/13/2020] [Indexed: 11/13/2022] Open
Abstract
Wolbachia are maternally transmitted, intracellular bacteria that can
often selfishly spread through arthropod populations via cytoplasmic incompatibility (CI).
CI manifests as embryonic death when males expressing prophage WO genes
cifA and cifB mate with uninfected females or females
harboring an incompatible Wolbachia strain. Females with a compatible
cifA-expressing strain rescue CI. Thus, cif-mediated
CI confers a relative fitness advantage to females transmitting
Wolbachia. However, whether cif sequence variation
underpins incompatibilities between Wolbachia strains and variation in CI
penetrance remains unknown. Here, we engineer Drosophila melanogaster to
transgenically express cognate and non-cognate cif homologs and assess
their CI and rescue capability. Cognate expression revealed that cifA;B
native to D. melanogaster causes strong CI, and cognate
cifA;B homologs from two other Drosophila-associated
Wolbachia cause weak transgenic CI, including the first demonstration
of phylogenetic type 2 cifA;B CI. Intriguingly, non-cognate expression of
cifA and cifB alleles from different strains revealed
that cifA homologs generally contribute to strong transgenic CI and
interchangeable rescue despite their evolutionary divergence, and cifB
genetic divergence contributes to weak or no transgenic CI. Finally, we find that a type 1
cifA can rescue CI caused by a genetically divergent type 2
cifA;B in a manner consistent with unidirectional incompatibility. By
genetically dissecting individual CI functions for type 1 and 2 cifA and
cifB, this work illuminates new relationships between
cif genotype and CI phenotype. We discuss the relevance of these
findings to CI’s genetic basis, phenotypic variation patterns, and mechanism.
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Affiliation(s)
- J Dylan Shropshire
- Department of Biological Sciences, Vanderbilt University, VU Station B, Box 35-1634, Nashville, TN 37235, USA.,Vanderbilt Microbiome Initiative, Vanderbilt University, VU Station B, Box 35-1634, Nashville, TN 37235, USA.,Division of Biological Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA
| | - Rachel Rosenberg
- Department of Biological Sciences, Vanderbilt University, VU Station B, Box 35-1634, Nashville, TN 37235, USA.,Vanderbilt Microbiome Initiative, Vanderbilt University, VU Station B, Box 35-1634, Nashville, TN 37235, USA
| | - Seth R Bordenstein
- Department of Biological Sciences, Vanderbilt University, VU Station B, Box 35-1634, Nashville, TN 37235, USA.,Vanderbilt Microbiome Initiative, Vanderbilt University, VU Station B, Box 35-1634, Nashville, TN 37235, USA.,Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, TN 37235, USA.,Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37235, USA
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9
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Caragata EP, Dong S, Dong Y, Simões ML, Tikhe CV, Dimopoulos G. Prospects and Pitfalls: Next-Generation Tools to Control Mosquito-Transmitted Disease. Annu Rev Microbiol 2021; 74:455-475. [PMID: 32905752 DOI: 10.1146/annurev-micro-011320-025557] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mosquito-transmitted diseases, including malaria and dengue, are a major threat to human health around the globe, affecting millions each year. A diverse array of next-generation tools has been designed to eliminate mosquito populations or to replace them with mosquitoes that are less capable of transmitting key pathogens. Many of these new approaches have been built on recent advances in CRISPR/Cas9-based genome editing. These initiatives have driven the development of pathogen-resistant lines, new genetics-based sexing methods, and new methods of driving desirable genetic traits into mosquito populations. Many other emerging tools involve microorganisms, including two strategies involving Wolbachia that are achieving great success in the field. At the same time, other mosquito-associated bacteria, fungi, and even viruses represent untapped sources of new mosquitocidal or antipathogen compounds. Although there are still hurdles to be overcome, the prospect that such approaches will reduce the impact of these diseases is highly encouraging.
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Affiliation(s)
- E P Caragata
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - S Dong
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - Y Dong
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - M L Simões
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - C V Tikhe
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - G Dimopoulos
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
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11
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Moretti R, Calvitti M. Issues with combining incompatible and sterile insect techniques. Nature 2021; 590:E1-E2. [PMID: 33536643 DOI: 10.1038/s41586-020-03164-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/07/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Riccardo Moretti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy & Sustainable Economic Development), Rome, Italy.
| | - Maurizio Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy & Sustainable Economic Development), Rome, Italy
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12
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Santos VSV, Pereira BB. Low toxicity and high efficacy in use of novel approaches to control Aedes aegypti. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2020; 23:243-254. [PMID: 32515686 DOI: 10.1080/10937404.2020.1776655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Arthropod-borne viruses are a group of etiologic agents accounting for different incapacitating diseases that progress to severe and lethal forms in animal and human targets consequently representing a significant burden on public health and global economies. Although attempts were undertaken to combat Aedes aegypti, the primary urban mosquito vector of several life-threatening diseases, the misuse of chemical pesticides, development of resistance, and toxicity on non-target species still need to be overcome. In this context, it is imperative for development of long-lasting, novel approaches envisioning effective control of Aedes aegypti, mainly in endemic regions. Thus, the present review was undertaken to describe safe and eco-friendly approaches as potential weapons against Aedes aegypti. Accordingly, the findings discussed indicated that biological larvicides and genetic engineering technologies constitute noteworthy alternatives of future mosquito-borne arbovirus disease control efforts.
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Affiliation(s)
- Vanessa Santana Vieira Santos
- Department of Environmental Health, Laboratory of Environmental Health, Federal University of Uberlândia, Santa Mônica Campus , Uberlândia, Minas Gerais, Brazil
- Department of Biotechnology, Federal University of Uberlândia, Institute of Biotechnology, Umuarama Campus , Uberlândia, Minas Gerais, Brazil
| | - Boscolli Barbosa Pereira
- Department of Environmental Health, Laboratory of Environmental Health, Federal University of Uberlândia, Santa Mônica Campus , Uberlândia, Minas Gerais, Brazil
- Department of Biotechnology, Federal University of Uberlândia, Institute of Biotechnology, Umuarama Campus , Uberlândia, Minas Gerais, Brazil
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13
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Mateos M, Martinez Montoya H, Lanzavecchia SB, Conte C, Guillén K, Morán-Aceves BM, Toledo J, Liedo P, Asimakis ED, Doudoumis V, Kyritsis GA, Papadopoulos NT, Augustinos AA, Segura DF, Tsiamis G. Wolbachia pipientis Associated With Tephritid Fruit Fly Pests: From Basic Research to Applications. Front Microbiol 2020; 11:1080. [PMID: 32582067 PMCID: PMC7283806 DOI: 10.3389/fmicb.2020.01080] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/30/2020] [Indexed: 12/19/2022] Open
Abstract
Members of the true fruit flies (family Tephritidae) are among the most serious agricultural pests worldwide, whose control and management demands large and costly international efforts. The need for cost-effective and environmentally friendly integrated pest management (IPM) has led to the development and implementation of autocidal control strategies. These approaches include the widely used sterile insect technique and the incompatible insect technique (IIT). IIT relies on maternally transmitted bacteria (namely Wolbachia) to cause a conditional sterility in crosses between released mass-reared Wolbachia-infected males and wild females, which are either uninfected or infected with a different Wolbachia strain (i.e., cytoplasmic incompatibility; CI). Herein, we review the current state of knowledge on Wolbachia-tephritid interactions including infection prevalence in wild populations, phenotypic consequences, and their impact on life history traits. Numerous pest tephritid species are reported to harbor Wolbachia infections, with a subset exhibiting high prevalence. The phenotypic effects of Wolbachia have been assessed in very few tephritid species, due in part to the difficulty of manipulating Wolbachia infection (removal or transinfection). Based on recent methodological advances (high-throughput DNA sequencing) and breakthroughs concerning the mechanistic basis of CI, we suggest research avenues that could accelerate generation of necessary knowledge for the potential use of Wolbachia-based IIT in area-wide integrated pest management (AW-IPM) strategies for the population control of tephritid pests.
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Affiliation(s)
- Mariana Mateos
- Departments of Ecology and Conservation Biology, and Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, United States
| | - Humberto Martinez Montoya
- Laboratorio de Genética y Genómica Comparativa, Unidad Académica Multidisciplinaria Reynosa Aztlan, Universidad Autónoma de Tamaulipas, Ciudad Victoria, Mexico
| | - Silvia B Lanzavecchia
- Instituto de Genética 'Ewald A. Favret' - GV IABIMO (INTA-CONICET) Hurlingham, Buenos Aires, Argentina
| | - Claudia Conte
- Instituto de Genética 'Ewald A. Favret' - GV IABIMO (INTA-CONICET) Hurlingham, Buenos Aires, Argentina
| | | | | | - Jorge Toledo
- El Colegio de la Frontera Sur, Tapachula, Mexico
| | - Pablo Liedo
- El Colegio de la Frontera Sur, Tapachula, Mexico
| | - Elias D Asimakis
- Department of Environmental Engineering, University of Patras, Agrinio, Greece
| | - Vangelis Doudoumis
- Department of Environmental Engineering, University of Patras, Agrinio, Greece
| | - Georgios A Kyritsis
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Larissa, Greece
| | - Nikos T Papadopoulos
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Larissa, Greece
| | - Antonios A Augustinos
- Department of Plant Protection, Institute of Industrial and Forage Crops, Hellenic Agricultural Organization - DEMETER, Patras, Greece
| | - Diego F Segura
- Instituto de Genética 'Ewald A. Favret' - GV IABIMO (INTA-CONICET) Hurlingham, Buenos Aires, Argentina
| | - George Tsiamis
- Department of Environmental Engineering, University of Patras, Agrinio, Greece
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14
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Caputo B, Moretti R, Manica M, Serini P, Lampazzi E, Bonanni M, Fabbri G, Pichler V, Della Torre A, Calvitti M. A bacterium against the tiger: preliminary evidence of fertility reduction after release of Aedes albopictus males with manipulated Wolbachia infection in an Italian urban area. PEST MANAGEMENT SCIENCE 2020; 76:1324-1332. [PMID: 31603613 DOI: 10.1002/ps.5643] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/27/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Novel tools are needed to reduce the nuisance and risk of exotic arbovirus transmission associated with the colonization of temperate regions by Aedes albopictus. The incompatible insect technique (IIT) is a population suppression approach based on cytoplasmic incompatibility between males with manipulated endosymbionts and wild females. Here, we present the results of the first field experiment in Europe to assess the capacity of an Ae. albopictus line (ARwP) deprived of its natural endosymbiont Wolbachia and transinfected with a Wolbachia strain from the mosquito Culex pipiens, to sterilize wild females. RESULTS We released ∼ 4500 ARwP males weekly for 6 weeks in a green area within urban Rome (Italy) and carried out egg (N = 13 442), female (N = 128) and male (N = 352) collections. Egg (N = 13 783) and female (N = 48) collections were also carried out at two untreated control sites. The percentage of viable eggs during release was, on average, significantly lower in treated sites than in control sites, with the greatest difference (16%) seen after the fourth release. The ARwP to wild male ratio in the release spots between day 3 after the first ARwP male release and day 7 after the last release was, on average, 7:10. Released males survived up to 2 weeks. Approximately 30% of females collected in the release spots showed 100% sterility and 20% showed strongly reduced fertility compared with control sites. CONCLUSIONS Results support the potential of IIT as a tool contributing to Ae. albopictus control in the urban context, and stress the need for larger field trials to evaluate the cost-efficacy of the approach in suppressing wild populations. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Beniamino Caputo
- Department of Public Health and Infectious Diseases, Università di Roma Sapienza, Rome, Italy
| | - Riccardo Moretti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Mattia Manica
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, Trento, Italy
| | - Paola Serini
- Department of Public Health and Infectious Diseases, Università di Roma Sapienza, Rome, Italy
| | - Elena Lampazzi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Marco Bonanni
- Department of Public Health and Infectious Diseases, Università di Roma Sapienza, Rome, Italy
| | - Giulia Fabbri
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Verena Pichler
- Department of Public Health and Infectious Diseases, Università di Roma Sapienza, Rome, Italy
| | - Alessandra Della Torre
- Department of Public Health and Infectious Diseases, Università di Roma Sapienza, Rome, Italy
| | - Maurizio Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
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15
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Pasquali S, Mariani L, Calvitti M, Moretti R, Ponti L, Chiari M, Sperandio G, Gilioli G. Development and calibration of a model for the potential establishment and impact of Aedes albopictus in Europe. Acta Trop 2020; 202:105228. [PMID: 31678121 DOI: 10.1016/j.actatropica.2019.105228] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/18/2019] [Accepted: 10/18/2019] [Indexed: 11/29/2022]
Abstract
The Asian tiger mosquito (Aedes albopictus) is one of the most invasive disease vectors worldwide. The species is a competent vector of dengue, chikungunya, Zika viruses and other severe parasites and pathogens threatening human health. The capacity of this mosquito to colonize and establish in new areas (including temperate regions) is enhanced by its ability of producing diapausing eggs that survive relatively cold winters. The main drivers of population dynamics for this mosquito are water and air temperature and photoperiod. In this paper, we present a mechanistic model that predicts the potential distribution, abundance and activity of Asian tiger mosquito in Europe. The model includes a comprehensive description of: i) the individual life-history strategies, including diapause, ii) the influence of weather-driven individual physiological responses on population dynamics and iii) the density-dependent regulation of larval mortality rate. The model is calibrated using field data from several locations along an altitudinal gradient in the Italian Alps, which enabled accurate prediction of cold temperature effects on population abundance, including identification of conditions that prevent overwintering of the species. Model predictions are consistent with the most updated information on species' presence and absence. Predicted population abundance shows a clear south-north decreasing gradient. A similar yet less evident pattern in the activity of the species is also predicted. The model represents a valuable tool for the development of strategies aimed at the management of Ae. albopictus and for the implementation of effective control measures against vector-borne diseases in Europe.
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Affiliation(s)
- S Pasquali
- CNR-IMATI "Enrico Magenes", Via A. Corti 12, 20133 Milano, Italy.
| | - L Mariani
- Lombard Museum of Agricultural History, Via Celoria, 2, 20133 Milano, Italy; DiSAA, Università degli Studi di Milano, Via Celoria 2, 20133 Milano, Italy
| | - M Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, via Anguillarese 301, 00123 Rome, Italy
| | - R Moretti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, via Anguillarese 301, 00123 Rome, Italy
| | - L Ponti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, via Anguillarese 301, 00123 Rome, Italy; Center for the Analysis of Sustainable Agricultural Systems (www.casasglobal.org), Kensington CA 94707, USA
| | - M Chiari
- UO Veterinaria, DG Welfare, Regione Lombardia, P.zza Città di Lombardia 1, 20124 Milano, Italy
| | - G Sperandio
- DMMT, University of Brescia, Viale Europa 11, 25123 Brescia, Italy; Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Amendola 2, 42122 Reggio Emilia, Italy
| | - G Gilioli
- DMMT, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
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16
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Ross PA, Callahan AG, Yang Q, Jasper M, Arif MAK, Afizah AN, Nazni WA, Hoffmann AA. An elusive endosymbiont: Does Wolbachia occur naturally in Aedes aegypti? Ecol Evol 2020; 10:1581-1591. [PMID: 32076535 PMCID: PMC7029055 DOI: 10.1002/ece3.6012] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/16/2019] [Accepted: 12/20/2019] [Indexed: 02/06/2023] Open
Abstract
Wolbachia are maternally inherited endosymbiotic bacteria found within many insect species. Aedes mosquitoes experimentally infected with Wolbachia are being released into the field for Aedes-borne disease control. These Wolbachia infections induce cytoplasmic incompatibility which is used to suppress populations through incompatible matings or replace populations through the reproductive advantage provided by this mechanism. However, the presence of naturally occurring Wolbachia in target populations could interfere with both population replacement and suppression programs depending on the compatibility patterns between strains. Aedes aegypti were thought to not harbor Wolbachia naturally but several recent studies have detected Wolbachia in natural populations of this mosquito. We therefore review the evidence for natural Wolbachia infections in A. aegypti to date and discuss limitations of these studies. We draw on research from other mosquito species to outline the potential implications of natural Wolbachia infections in A. aegypti for disease control. To validate previous reports, we obtained a laboratory population of A. aegypti from New Mexico, USA, that harbors a natural Wolbachia infection, and we conducted field surveys in Kuala Lumpur, Malaysia, where a natural Wolbachia infection has also been reported. However, we were unable to detect Wolbachia in both the laboratory and field populations. Because the presence of naturally occurring Wolbachia in A. aegypti could have profound implications for Wolbachia-based disease control programs, it is important to continue to accurately assess the Wolbachia status of target Aedes populations.
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Affiliation(s)
- Perran A Ross
- Pest and Environmental Adaptation Research Group School of BioSciences Bio21 Institute The University of Melbourne Parkville Victoria Australia
| | - Ashley G Callahan
- Pest and Environmental Adaptation Research Group School of BioSciences Bio21 Institute The University of Melbourne Parkville Victoria Australia
| | - Qiong Yang
- Pest and Environmental Adaptation Research Group School of BioSciences Bio21 Institute The University of Melbourne Parkville Victoria Australia
| | - Moshe Jasper
- Pest and Environmental Adaptation Research Group School of BioSciences Bio21 Institute The University of Melbourne Parkville Victoria Australia
| | - Mohd A K Arif
- Institute for Medical Research Kuala Lumpur Malaysia
| | | | - Wasi A Nazni
- Institute for Medical Research Kuala Lumpur Malaysia
| | - Ary A Hoffmann
- Pest and Environmental Adaptation Research Group School of BioSciences Bio21 Institute The University of Melbourne Parkville Victoria Australia
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17
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Bourtzis K, Tu ZJ. Joint FAO/IAEA Coordinated Research Project on "Exploring genetic, molecular, mechanical and behavioural methods of sex separation in mosquitoes" - an introduction. Parasit Vectors 2018; 11:653. [PMID: 30583742 PMCID: PMC6304754 DOI: 10.1186/s13071-018-3206-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Zhijian Jake Tu
- Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061 USA
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