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Rahman MM, Morshed MN, Adnan SM, Howlader MTH. Assessment of biorational larvicides and botanical oils against Culex quinquefasciatus Say (Diptera: Culicidae) larvae in laboratory conditions. Heliyon 2024; 10:e31453. [PMID: 38832263 PMCID: PMC11145214 DOI: 10.1016/j.heliyon.2024.e31453] [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: 07/14/2023] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 06/05/2024] Open
Abstract
Mosquitoes are known vectors that transmit deadly diseases to millions of people across the globe. The reliance on synthetic insecticides has been the sole way to combat mosquito vectors for decades. In recent years, the extensive use of conventional insecticides in mosquito suppression has led to significant pesticide resistance and serious human health hazards. In this light, investigating the potential application of biorational compounds for vector management has drawn significant attention. We, hereby, evaluated the efficacy of three microbial derivative biorational insecticides, abamectin, spinosad, and buprofezin, and two botanical oils, neem (Azadirachta indica A. Juss) and karanja oil (Pongamia pinnata Linn.) against the Culex quinquefasciatus under laboratory conditions. The fourth-instar C. quinquefasciatus larvae were exposed to different concentrations of the selected larvicides and lethality was estimated based on LC50 and LT50 with Probit analysis. All larvicides showed concentration-dependent significant effects on survival and demonstrated larvicidal activity against C. quinquefasciatus larvae. However, abamectin exerted the highest toxicity (LC50 = 10.36 ppm), exhibited statistically significant effects on C. quinquefasciatus larval mortality, followed by spinosad (LC50 = 21.32 ppm) and buprofezin (LC50 = 56.34 ppm). Abamectin caused larval mortality ranged from 30.00 to 53.33 % and 53.00-70.00 % at 06 and 07 h after treatment (HAT), respectively. In the case of botanicals, karanja oil (LC50 = 216.61 ppm) was more lethal (more than 1.5 times) and had a shorter lethal time than neem oil (LC50 = 330.93 ppm) and showed a classic pattern of relationship between concentrations and mortality over time. Overall, the present study highlighted the potential of deploying new generation biorational pesticides and botanicals in mosquito vector control programs.
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Affiliation(s)
- Md Mahfuzur Rahman
- Insect Biotechnology and Biopesticide Laboratory, Department of Entomology, Bangladesh Agricultural University, Bangladesh
- Lecturer, Department of Entomology, EXIM Bank Agricultural University Bangladesh, Nawabganj-6300, Bangladesh
| | - Md Niaz Morshed
- Insect Biotechnology and Biopesticide Laboratory, Department of Entomology, Bangladesh Agricultural University, Bangladesh
- Scientific Officer, Adaptive Research Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh
| | - Saleh Mohammad Adnan
- Insect Biotechnology and Biopesticide Laboratory, Department of Entomology, Bangladesh Agricultural University, Bangladesh
- Research Entomologist, New South Wales Department of Primary Industries, Australia
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Hasan MN, Khalil I, Chowdhury MAB, Rahman M, Asaduzzaman M, Billah M, Banu LA, Alam MU, Ahsan A, Traore T, Uddin MJ, Galizi R, Russo I, Zumla A, Haider N. Two decades of endemic dengue in Bangladesh (2000-2022): trends, seasonality, and impact of temperature and rainfall patterns on transmission dynamics. JOURNAL OF MEDICAL ENTOMOLOGY 2024; 61:345-353. [PMID: 38253990 PMCID: PMC10936167 DOI: 10.1093/jme/tjae001] [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: 07/22/2023] [Revised: 12/17/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024]
Abstract
The objectives of this study were to compare dengue virus (DENV) cases, deaths, case-fatality ratio [CFR], and meteorological parameters between the first and the recent decades of this century (2000-2010 vs. 2011-2022) and to describe the trends, seasonality, and impact of change of temperature and rainfall patterns on transmission dynamics of dengue in Bangladesh. For the period 2000-2022, dengue cases and death data from Bangladesh's Ministry of Health and Family Welfare's website, and meteorological data from the Bangladesh Meteorological Department were analyzed. A Poisson regression model was performed to identify the impact of meteorological parameters on the monthly dengue cases. A forecast of dengue cases was performed using an autoregressive integrated moving average model. Over the past 23 yr, a total of 244,246 dengue cases were reported including 849 deaths (CFR = 0.35%). The mean annual number of dengue cases increased 8 times during the second decade, with 2,216 cases during 2000-2010 vs. 18,321 cases during 2011-2022. The mean annual number of deaths doubled (21 vs. 46), but the overall CFR has decreased by one-third (0.69% vs. 0.23%). Concurrently, the annual mean temperature increased by 0.49 °C, and rainfall decreased by 314 mm with altered precipitation seasonality. Monthly mean temperature (Incidence risk ratio [IRR]: 1.26), first-lagged rainfall (IRR: 1.08), and second-lagged rainfall (IRR: 1.17) were significantly associated with monthly dengue cases. The increased local temperature and changes in rainfall seasonality might have contributed to the increased dengue cases in Bangladesh.
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Affiliation(s)
- Mohammad Nayeem Hasan
- Department of Statistics, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Ibrahim Khalil
- Department of Livestock Services, Ministry of Fisheries and Livestock, Bangladesh, Dhaka, Bangladesh
| | | | - Mahbubur Rahman
- The Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, UK
- Institute of Epidemiology, Disease Control and Research (IEDCR), Ministry of Health and Family Welfare, Mohakhali, Dhaka, Bangladesh
| | - Md Asaduzzaman
- School of Digital, Technologies, and Arts, Staffordshire University, Stoke on Trent ST4 2DE, UK
| | - Masum Billah
- School of Digital, Technologies, and Arts, Staffordshire University, Stoke on Trent ST4 2DE, UK
| | - Laila Arjuman Banu
- Department of Anatomy, Bangabandhu Sheik Mujib Medical University, Dhaka, Bangladesh
| | - Mahbub-Ul Alam
- Environmental Intervention Unit, International Centre for Diarrhoeal Diseases Research, Bangladesh (ICDDR,B), Dhaka 1212, Bangladesh
| | - Atik Ahsan
- Environmental Intervention Unit, International Centre for Diarrhoeal Diseases Research, Bangladesh (ICDDR,B), Dhaka 1212, Bangladesh
| | - Tieble Traore
- Emergency Preparedness and Response Programme, WHO Regional Office for Africa, Dakar Hub, Dakar, Senegal
| | - Md Jamal Uddin
- Department of Statistics, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
- Department of General Educational and Development, Daffodil International University, Dhaka, Bangladesh
| | - Roberto Galizi
- School of Life Sciences, Faculty of Natural Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK
| | - Ilaria Russo
- School of Medicine, Faculty of Medicine and Health Sciences, Keele University, Staffordshire ST5 5BG, UK
| | - Alimuddin Zumla
- Division of Infection and Immunity, Centre for Clinical Microbiology, University College London and NIHR-BRC, University College London Hospitals, London, UK
| | - Najmul Haider
- School of Life Sciences, Faculty of Natural Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK
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Avramov M, Thaivalappil A, Ludwig A, Miner L, Cullingham CI, Waddell L, Lapen DR. Relationships between water quality and mosquito presence and abundance: a systematic review and meta-analysis. JOURNAL OF MEDICAL ENTOMOLOGY 2024; 61:1-33. [PMID: 37832159 PMCID: PMC10784781 DOI: 10.1093/jme/tjad139] [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: 04/27/2023] [Revised: 08/31/2023] [Accepted: 09/18/2023] [Indexed: 10/15/2023]
Abstract
Mosquito-borne diseases (MBDs) are emerging in response to climate and land use changes. As mosquito (Diptera: Culicidae) habitat selection is often contingent on water availability for egg and larval development, studies have recognized water quality also influences larval habitats. However, underlying species-, genera-, and mosquito level preferences for water quality conditions are varied. This systematic review and meta-analysis aimed to identify, characterize, appraise, and synthesize available global data on the relationships between water quality and mosquito presence and abundance (MPA); with the goal to further our understanding of the geographic expansion of MBD risks. A systematic review was conducted to identify studies investigating the relationships between water quality properties and MPA. Where appropriate, random-effects meta-analyses were conducted to provide pooled estimates for the association between the most reported water quality properties and MPA. The most reported water quality parameters were pH (87%), nitrogen concentrations (56%), turbidity (56%), electrical conductivity (54%), dissolved oxygen (43%), phosphorus concentrations (30%), and alkalinity (10%). Overall, pH (P = 0.05), turbidity (P < 0.0001), electrical conductivity (P = 0.005), dissolved oxygen (P < 0.0001), nitrogen (P < 0.0001), and phosphorus (P < 0.0001) showed significantly positive pooled correlations with MPA, while alkalinity showed a nonsignificant null pooled correlation (P = 0.85). We observed high heterogeneity in most meta-analyses, and climate zonation was shown to influence the pooled estimates. Linkages between MPA and water quality properties will enhance our capacity to predict MBD risks under changing environmental and land use changes.
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Affiliation(s)
- Marc Avramov
- Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
- National Microbiology Laboratory Branch, Public Health Agency of Canada, 3200 rue Sicotte, C.P. 5000, St. Hyacinthe, QC J2S 2M2, Canada
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada
| | - Abhinand Thaivalappil
- Department of Population Medicine, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada
| | - Antoinette Ludwig
- National Microbiology Laboratory Branch, Public Health Agency of Canada, 3200 rue Sicotte, C.P. 5000, St. Hyacinthe, QC J2S 2M2, Canada
| | - Lauren Miner
- Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Catherine I Cullingham
- Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Lisa Waddell
- National Microbiology Laboratory Branch, Public Health Agency of Canada, 370 Speedvale Avenue West, Guelph, ON N1H 7M7, Canada
| | - David R Lapen
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada
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Natasha JA, Yasmin AR, Kumar Sharma RS, Nur-Fazila SH, Nur-Mahiza MI, Arshad SS, Mohammed HO, Kumar K, Keng Loong S, Ahmad Khusaini MKS. Mosquito as West Nile Virus Vector: Global Timeline of Detection, Characteristic, and Biology. PERTANIKA JOURNAL OF TROPICAL AGRICULTURAL SCIENCE 2023; 46:1063-1081. [DOI: 10.47836/pjtas.46.3.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Mosquitoes are extremely important vectors that transmit zoonotic West Nile virus (WNV) globally, resulting in significant outbreaks in birds, humans, and mammals. The abundance of mosquito vectors combined with the migratory flying behaviour of wild birds across the globe has exacerbated the dynamics of WNV infection. Depth understanding of the WNV infection requires a comprehensive understanding of the character of the vector in terms of their taxonomy, morphology, biology, behaviours, preferences, and factors that promote their breeding. Most susceptible animals and humans may experience serious neurological illnesses such as encephalitis. Little is known about the susceptibility of mosquitoes to WNV infection. This review provides insightful knowledge about the characteristics of mosquitoes that carry WNV and their susceptibility to WNV infection. The context of mosquito’s involvement in WNV transmission is demonstrated through space and time from the 1950’s until to date. The historical timeline of WNV transmission strength was significantly intensified via the complex interactions between vector, virus, and environment. Such knowledge will provide valuable insights into vector control intervention mitigation strategies, especially in tropical climate countries like Malaysia.
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Staples K, Richardson S, Neville PJ, Oosthuizen J. A Multi-Species Simulation of Mosquito Disease Vector Development in Temperate Australian Tidal Wetlands Using Publicly Available Data. Trop Med Infect Dis 2023; 8:tropicalmed8040215. [PMID: 37104341 PMCID: PMC10145111 DOI: 10.3390/tropicalmed8040215] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/15/2023] [Accepted: 03/29/2023] [Indexed: 04/07/2023] Open
Abstract
Worldwide, mosquito monitoring and control programs consume large amounts of resources in the effort to minimise mosquito-borne disease incidence. On-site larval monitoring is highly effective but time consuming. A number of mechanistic models of mosquito development have been developed to reduce the reliance on larval monitoring, but none for Ross River virus, the most commonly occurring mosquito-borne disease in Australia. This research modifies existing mechanistic models for malaria vectors and applies it to a wetland field site in Southwest, Western Australia. Environmental monitoring data were applied to an enzyme kinetic model of larval mosquito development to simulate timing of adult emergence and relative population abundance of three mosquito vectors of the Ross River virus for the period of 2018–2020. The model results were compared with field measured adult mosquitoes trapped using carbon dioxide light traps. The model showed different patterns of emergence for the three mosquito species, capturing inter-seasonal and inter-year variation, and correlated well with field adult trapping data. The model provides a useful tool to investigate the effects of different weather and environmental variables on larval and adult mosquito development and can be used to investigate the possible effects of changes to short-term and long-term sea level and climate changes.
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Affiliation(s)
- Kerry Staples
- Occupational and Environmental Health, School of Medical and Health Sciences, Edith Cowan University, Joondalup 6027, Australia
| | - Steven Richardson
- School of Science, Edith Cowan University, Joondalup 6027, Australia
| | - Peter J. Neville
- Occupational and Environmental Health, School of Medical and Health Sciences, Edith Cowan University, Joondalup 6027, Australia
- Biological and Applied Environmental Health, Environmental Health Directorate, Department of Health, Perth 6849, Australia
| | - Jacques Oosthuizen
- Occupational and Environmental Health, School of Medical and Health Sciences, Edith Cowan University, Joondalup 6027, Australia
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Tong Y, Jiang H, Xu N, Wang Z, Xiong Y, Yin J, Huang J, Chen Y, Jiang Q, Zhou Y. Global Distribution of Culex tritaeniorhynchus and Impact Factors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4701. [PMID: 36981610 PMCID: PMC10048298 DOI: 10.3390/ijerph20064701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Culex tritaeniorhynchus is the primary vector of Japanese encephalitis (JE) and has a wide global distribution. However, the current and future geographic distribution maps of Cx. tritaeniorhynchus in global are still incomplete. Our study aims to predict the potential distribution of Cx. tritaeniorhynchus in current and future conditions to provide a guideline for the formation and implementation of vector control strategies all over the world. We collected and screened the information on the occurrence of Cx. tritaeniorhynchus by searching the literature and online databases and used ten algorithms to investigate its global distribution and impact factors. Cx. tritaeniorhynchus had been detected in 41 countries from 5 continents. The final ensemble model (TSS = 0.864 and AUC = 0.982) indicated that human footprint was the most important factor for the occurrence of Cx. tritaeniorhynchus. The tropics and subtropics, including southeastern Asia, Central Africa, southeastern North America and eastern South America, showed high habitat suitability for Cx. tritaeniorhynchus. Cx. tritaeniorhynchus is predicted to have a wider distribution in all the continents, especially in Western Europe and South America in the future under two extreme emission scenarios (SSP5-8.5 and SSP1-2.6). Targeted strategies for the control and prevention of Cx. tritaeniorhynchus should be further strengthened.
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Affiliation(s)
- Yixin Tong
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Honglin Jiang
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Ning Xu
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Zhengzhong Wang
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Ying Xiong
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Jiangfan Yin
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Junhui Huang
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Yue Chen
- School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, 600 Peter Morand Crescent, Ottawa, ON K1G 5Z3, Canada
| | - Qingwu Jiang
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
| | - Yibiao Zhou
- School of Public Health, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Building 8, 130 Dong’an Road, Shanghai 200032, China
- Center for Tropical Disease Research, Fudan University, Building 8, 130 Dong’an Road, Shanghai 200032, China
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Metz HC, Miller AK, You J, Akorli J, Avila FW, Buckner EA, Kane P, Otoo S, Ponlawat A, Triana-Chávez O, Williams KF, McBride CS. Evolution of a Mosquito's Hatching Behavior to Match Its Human-Provided Habitat. Am Nat 2023; 201:200-214. [PMID: 36724468 DOI: 10.1086/722481] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
AbstractA subspecies of the yellow fever mosquito, Aedes aegypti, has recently evolved to specialize in biting and living alongside humans. It prefers human odor over the odor of nonhuman animals and breeds in human-provided artificial containers rather than the forest tree holes of its ancestors. Here, we report one way this human specialist has adapted to the distinct ecology of human environments. While eggs of the ancestral subspecies rarely hatch in pure water, those of the derived human specialist do so readily. We trace this novel behavior to a shift in how eggs respond to dissolved oxygen, low levels of which may signal food abundance. Moreover, we show that while tree holes are consistently low in dissolved oxygen, artificial containers often have much higher levels. There is thus a concordance between the hatching behavior of each subspecies and the aquatic habitat it uses in the wild. We find this behavioral variation is heritable, with both maternal and zygotic effects. The zygotic effect depends on dissolved oxygen concentration (i.e., a genotype-environment interaction, or G×E), pointing to potential changes in oxygen-sensitive circuits. Together, our results suggest that a shift in hatching response contributed to the pernicious success of this human-specialist mosquito and illustrate how animals may rapidly adapt to human-driven changes in the environment.
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Montalbo FJP. Machine-based mosquito taxonomy with a lightweight network-fused efficient dual ConvNet with residual learning and Knowledge Distillation. Appl Soft Comput 2022. [DOI: 10.1016/j.asoc.2022.109913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Amorim JA, Sa ILR, Rojas MVR, Santos Neto NF, Galardo AKR, Carvalho DP, Ribeiro KAN, Sallum MAM. Aquatic Macrophytes Hosting Immature Mansonia (Mansonia) Blanchard, 1901 (Diptera, Culicidae) in Porto Velho, Rondonia State, Brazil. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:631-637. [PMID: 35043213 DOI: 10.1093/jme/tjab223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Indexed: 06/14/2023]
Abstract
High abundance of hematophagous mosquitoes of the genus Mansonia Blanchard, 1901 (Diptera: Culicidae) threatens human and domestic animal health and well-being. Knowledge of the biology of nuisance mosquito species is necessary to understand specific ecological and biological factors to enable rapid and effective monitoring measures for sustainable control programs. The establishment and dispersion of Mansonia species are associated with the occurrence of aquatic macrophytes species, which are indispensable for the development of larvae and pupae. To increase knowledge of the host plants for Mansonia immature stages in Porto Velho, Rondonia State, Brazil, specimens of four plant species, which occur across the tributaries of the Madeira River were sampled and inspected for the presence of egg batches, larvae, and pupae. A total of 1,386 larvae and pupae of Mansonia spp. were collected attached to the roots of Eichhornia crassipes (Mart.) Solms (Commelinales: Pontederiaceae), Pistia stratiotes L. (Alismatales: Araceae), and Limnobium laevigatum (Humb. and Bonpl. Ex Willd.) Heine (Alismatales: Hydrocharitaceae). The novel association of Mansonia species with L. laevigatum is presented. Egg batches of Mansonia spp. were found only on Salvinia molesta D.S. Mitch. (Salviniales: Salviniaceae). Possible differences in the roles played by E. crassipes and S. molesta in the reproductive cycle of Mansonia spp. in the surveyed area are discussed. All species of host plants including E. crassipes, P. stratiotes, S. molesta, and L. laevigatum should be considered when planning macrophyte management for the control of Mansonia species.
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Affiliation(s)
- J A Amorim
- Departamento de Epidemiologia, Faculdade de Saude Publica, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Departamento de Ciencias e Matematica, Instituto Federal de Educacao, Ciencia e Tecnologia de Sao Paulo, Sao Paulo, SP, Brazil
| | - I L R Sa
- Departamento de Epidemiologia, Faculdade de Saude Publica, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - M V R Rojas
- Departamento de Epidemiologia, Faculdade de Saude Publica, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - N F Santos Neto
- Laboratório de Entomologia Medica, Instituto de Pesquisas Cientificas e Tecnologicas do Estado do Amapa, Macapa, AP, Brazil
| | - A K R Galardo
- Laboratório de Entomologia Medica, Instituto de Pesquisas Cientificas e Tecnologicas do Estado do Amapa, Macapa, AP, Brazil
| | - D P Carvalho
- Gerencia de Meio Ambiente, Saude e Segurança do Trabalho, Santo Antonio Energia, Porto Velho, RO, Brazil
| | - K A N Ribeiro
- Gerencia de Meio Ambiente, Saude e Segurança do Trabalho, Santo Antonio Energia, Porto Velho, RO, Brazil
| | - M A M Sallum
- Departamento de Epidemiologia, Faculdade de Saude Publica, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
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Franklinos LHV, Redding DW, Lucas TCD, Gibb R, Abubakar I, Jones KE. Joint spatiotemporal modelling reveals seasonally dynamic patterns of Japanese encephalitis vector abundance across India. PLoS Negl Trop Dis 2022; 16:e0010218. [PMID: 35192626 PMCID: PMC8896663 DOI: 10.1371/journal.pntd.0010218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 03/04/2022] [Accepted: 02/01/2022] [Indexed: 11/21/2022] Open
Abstract
Predicting vector abundance and seasonality, key components of mosquito-borne disease (MBD) hazard, is essential to determine hotspots of MBD risk and target interventions effectively. Japanese encephalitis (JE), an important MBD, is a leading cause of viral encephalopathy in Asia with 100,000 cases estimated annually, but data on the principal vector Culex tritaeniorhynchus is lacking. We developed a Bayesian joint-likelihood model that combined information from available vector occurrence and abundance data to predict seasonal vector abundance for C. tritaeniorhynchus (a constituent of JE hazard) across India, as well as examining the environmental drivers of these patterns. Using data collated from 57 locations from 24 studies, we find distinct seasonal and spatial patterns of JE vector abundance influenced by climatic and land use factors. Lagged precipitation, temperature and land use intensity metrics for rice crop cultivation were the main drivers of vector abundance, independent of seasonal, or spatial variation. The inclusion of environmental factors and a seasonal term improved model prediction accuracy (mean absolute error [MAE] for random cross validation = 0.48) compared to a baseline model representative of static hazard predictions (MAE = 0.95), signalling the importance of seasonal environmental conditions in predicting JE vector abundance. Vector abundance varied widely across India with high abundance predicted in northern, north-eastern, eastern, and southern regions, although this ranged from seasonal (e.g., Uttar Pradesh, West Bengal) to perennial (e.g., Assam, Tamil Nadu). One-month lagged predicted vector abundance was a significant predictor of JE outbreaks (odds ratio 2.45, 95% confidence interval: 1.52–4.08), highlighting the possible development of vector abundance as a proxy for JE hazard. We demonstrate a novel approach that leverages information from sparse vector surveillance data to predict seasonal vector abundance–a key component of JE hazard–over large spatial scales, providing decision-makers with better guidance for targeting vector surveillance and control efforts. Japanese encephalitis (JE) is the leading cause of viral encephalopathy in Asia with an estimated 100,000 annual cases and 25,000 deaths. However, insufficient data on the predominant mosquito vector Culex tritaeniorhynchus–a key component of JE hazard–precludes hazard estimation required to target public health interventions. Previous studies have provided limited estimates of JE hazard, often predicting geographic distributions of potential vector occurrence without accounting for vector abundance, seasonality, or uncertainty in predictions. This study details a novel approach to predict spatiotemporal patterns in JE vector abundance using a joint-likelihood modelling technique that leverages information from sparse vector surveillance data. We showed that patterns in JE vector abundance were driven by seasonality and environmental factors and so demonstrated the limitations of previously available static vector distribution maps in estimating the vector population component of JE hazard. One-month lagged vector abundance predictions showed a positive relationship with JE outbreaks, signalling the potential use of vector abundance as a proxy for JE hazard. While vector surveillance data are limited, joint-likelihood models offer a useful approach to inform vector abundance predictions. This study provides decision-makers with a more complete picture of the distribution of JE vector abundance and can be used to target vector surveillance and control efforts and enhance the allocation of resources.
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Affiliation(s)
- Lydia H. V. Franklinos
- Centre for Biodiversity and Environment Research, University College London, London, United Kingdom
- Institute for Global Health, University College London, London, United Kingdom
- * E-mail:
| | - David W. Redding
- Institute of Zoology, Zoological Society of London, London, United Kingdom
| | - Tim C. D. Lucas
- School of Public Health, Imperial College London, London, United Kingdom
| | - Rory Gibb
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Centre on Climate Change and Planetary Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Ibrahim Abubakar
- Institute for Global Health, University College London, London, United Kingdom
| | - Kate E. Jones
- Centre for Biodiversity and Environment Research, University College London, London, United Kingdom
- Institute of Zoology, Zoological Society of London, London, United Kingdom
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11
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Rahma N, Syahribulan S, Ratnasari A, Nur SNR, Karmila M, Malasari R, Hasan H, Wahid I. The Risk of Mosquito-borne Diseases Related to Mosquito Fauna Richness and Livestock Placements in South and West Sulawesi, Indonesia. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.7038] [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: The local fauna of mosquitoes may have an essential role in the transmission of mosquito-borne pathogens.
AIM: The future risk of mosquito-borne diseases needs to be considered by the presence of factors that support mosquitoes and pathogens, such as the habitats, presence of host reservoirs, and placement of livestock in settlements.
METHODS: Mosquito catching methods used Animal Barrier Screen (ABS), Kelambu Trap (KT), and Human Landing Catch (HLC) in the wet and dry season. The role of a large animal in getting mosquito bites was analyzed based on the proportion of mosquitoes sampled by HLC to all collected mosquitoes. The potential vector of mosquitoes was projected based on the habitat, species density, and presence of host reservoirs.
RESULTS: Pasangkayu district had more mosquito fauna compared to North Toraja and Maros. However, the separated placement of livestock in North Toraja resulted in fewer mosquito bites to humans compare with Maros, where livestock was caged or tied directly beside individual houses. The separated placement of livestock in North Toraja and Pasangkayu acted as a barrier, while scattered placement among houses at Maros acted more as a mosquito attractant.
CONCLUSION: The habit of placing livestock separate from human settlements may reduce mosquito bites, reducing the risk of contracting mosquito-borne diseases. This finding proves using livestock as an outdoor vector control strategy to protect mosquito bites and disease transmission.
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12
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Cui G, Zhong S, Zheng T, Li Z, Zhang X, Li C, Hemming-Schroeder E, Zhou G, Li Y. Aedes albopictus life table: environment, food, and age dependence survivorship and reproduction in a tropical area. Parasit Vectors 2021; 14:568. [PMID: 34743753 PMCID: PMC8573987 DOI: 10.1186/s13071-021-05081-x] [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: 06/12/2021] [Accepted: 10/26/2021] [Indexed: 11/29/2022] Open
Abstract
Background Environmental conditions affect the biology of mosquito vectors. Aedes albopictus is a major vector of many important diseases including dengue, Zika, and chikungunya in China. Understanding the development, fecundity, and survivorship of Ae. albopictus mosquitoes in different environmental conditions is beneficial for the implementation of effective vector control measures. Methods Aedes albopictus larval and adult life-table experiments were conducted under natural conditions in indoor, half-shaded, and fully shaded settings, simulating the three major habitat types in Hainan Province, a tropical island in the South China Sea. Temperature, humidity, and light intensity were recorded daily. Larval rearing used habitat water and tap water, with and without additional artificial food. Development time, survivorship, pupation rate, and adult emergence rates were monitored. Adult mosquito survivorship and fecundity were monitored daily and reproductive rates were determined, and age-dependent survivorship and reproduction were analyzed. Results The pupation time and male and female emergence times were significantly shorter in indoor conditions than in shaded and half-shaded conditions for both tap water with added food and habitat water with added food groups. For habitat water with added food, the shaded environment had the lowest pupation rate among the settings. For tap water with added food group, the shaded environment had the lowest pupation rate. The mean survival time of females was 27.3 ± 0.8 days in the indoor condition, which was significantly longer than that in the half-shaded (18.4 ± 0.6 days) and shaded (13.8 ± 1.2 days) conditions. Adult mortality was age-dependent, and the rate of change in mortality with age was not significantly different among different environmental conditions. The mean net replacement rate (R0) of female mosquitoes showed no significant difference among the three conditions, whereas the per capita intrinsic growth rate (r) in the shaded condition was 42.0% and 20.4% higher than that in the indoor and half-shaded conditions, respectively. Female daily egg mass was also age-dependent in all the settings, decaying exponentially with age. Conclusions Our results imply that half-shaded conditions are likely the best natural condition for adult emergence and female reproduction, and food supply is crucial for larval development and pupation. The results provide new avenues for integrated mosquito management in indoor and outdoor areas, especially in half-shaded areas. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-05081-x.
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Affiliation(s)
- Guzhen Cui
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China.,Key Laboratory of Medical Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science, Guizhou Medical University, Guiyang, 550025, China
| | - Saifeng Zhong
- Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Tuquan Zheng
- Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Zhangrui Li
- Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Xu Zhang
- Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Chuang Li
- Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
| | - Elizabeth Hemming-Schroeder
- Program in Public Health, College of Health Sciences, University of California at Irvine, Irvine, CA, 92617, USA
| | - Guofa Zhou
- Program in Public Health, College of Health Sciences, University of California at Irvine, Irvine, CA, 92617, USA.
| | - Yiji Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China. .,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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13
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Lowe AM, Forest-Bérard K, Trudel R, Lo E, Gamache P, Tandonnet M, Kotchi SO, Leighton P, Dibernardo A, Lindsay R, Ludwig A. Mosquitoes Know No Borders: Surveillance of Potential Introduction of Aedes Species in Southern Québec, Canada. Pathogens 2021; 10:pathogens10080998. [PMID: 34451462 PMCID: PMC8400959 DOI: 10.3390/pathogens10080998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/04/2022] Open
Abstract
Current climatic conditions limit the distribution of Aedes (Stegomyia) albopictus (Skuse, Diptera: Culicidae) in the north, but predictive climate models suggest this species could establish itself in southern Canada by 2040. A vector of chikungunya, dengue, yellow fever, Zika and West Nile viruses, the Ae. Albopictus has been detected in Windsor, Ontario since 2016. Given the potential public health implications, and knowing that Aedes spp. can easily be introduced by ground transportation, this study aimed to determine if specimens could be detected, using an adequate methodology, in southern Québec. Mosquitoes were sampled in 2016 and 2017 along the main roads connecting Canada and the U.S., using Biogent traps (Sentinel-2, Gravide Aedes traps) and ovitraps. Overall, 24 mosquito spp. were captured, excluding Ae. Albopictus, but detecting one Aedes (Stegomyia) aegypti (Skuse) specimen (laid eggs). The most frequent species among captured adults were Ochlerotatus triseriatus, Culex pipiens complex, and Ochlerotatus japonicus (31.0%, 26.0%, and 17.3%, respectively). The present study adds to the increasing number of studies reporting on the range expansions of these mosquito species, and suggests that ongoing monitoring, using multiple capture techniques targeting a wide range of species, may provide useful information to public health with respect to the growing risk of emerging mosquito-borne diseases in southern Canada.
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Affiliation(s)
- Anne-Marie Lowe
- Direction des Risques Biologiques et de la Santé au Travail, Institut National de Santé Publique du Québec, 190 Boulevard Crémazie Est, Montréal, QC H2P 1E2, Canada; (A.-M.L.); (R.T.)
- Groupe de Recherche en Épidémiologie des Zoonoses et Santé Publique (GREZOSP), Faculty of Veterinary Medicine, University of Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada; (S.-O.K.); (P.L.); (A.L.)
| | - Karl Forest-Bérard
- Direction des Risques Biologiques et de la Santé au Travail, Institut National de Santé Publique du Québec, 190 Boulevard Crémazie Est, Montréal, QC H2P 1E2, Canada; (A.-M.L.); (R.T.)
- Correspondence:
| | - Richard Trudel
- Direction des Risques Biologiques et de la Santé au Travail, Institut National de Santé Publique du Québec, 190 Boulevard Crémazie Est, Montréal, QC H2P 1E2, Canada; (A.-M.L.); (R.T.)
| | - Ernest Lo
- Bureau D’information et D’études en Santé des Populations, Institut National de Santé Publique du Québec, 190 Boulevard Crémazie Est, Montréal, QC H2P 1E2, Canada; (E.L.); (P.G.); (M.T.)
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, 1020 Pine Ave. West, Montréal, QC H3A 1A2, Canada
| | - Philippe Gamache
- Bureau D’information et D’études en Santé des Populations, Institut National de Santé Publique du Québec, 190 Boulevard Crémazie Est, Montréal, QC H2P 1E2, Canada; (E.L.); (P.G.); (M.T.)
| | - Matthieu Tandonnet
- Bureau D’information et D’études en Santé des Populations, Institut National de Santé Publique du Québec, 190 Boulevard Crémazie Est, Montréal, QC H2P 1E2, Canada; (E.L.); (P.G.); (M.T.)
| | - Serge-Olivier Kotchi
- Groupe de Recherche en Épidémiologie des Zoonoses et Santé Publique (GREZOSP), Faculty of Veterinary Medicine, University of Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada; (S.-O.K.); (P.L.); (A.L.)
- Public Health Risk Sciences Division, National Microbiology Laboratory, Public Health Agency of Canada, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Patrick Leighton
- Groupe de Recherche en Épidémiologie des Zoonoses et Santé Publique (GREZOSP), Faculty of Veterinary Medicine, University of Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada; (S.-O.K.); (P.L.); (A.L.)
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University of Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Antonia Dibernardo
- Zoonotic Diseases and Special Pathogens Division, National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington St., Winnipeg, MB R3E 3M4, Canada; (A.D.); (R.L.)
| | - Robbin Lindsay
- Zoonotic Diseases and Special Pathogens Division, National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington St., Winnipeg, MB R3E 3M4, Canada; (A.D.); (R.L.)
| | - Antoinette Ludwig
- Groupe de Recherche en Épidémiologie des Zoonoses et Santé Publique (GREZOSP), Faculty of Veterinary Medicine, University of Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada; (S.-O.K.); (P.L.); (A.L.)
- Public Health Risk Sciences Division, National Microbiology Laboratory, Public Health Agency of Canada, 3200 Rue Sicotte, Saint-Hyacinthe, QC J2S 2M2, Canada
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14
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Pratiwi R, Huda A, Ghiffari A, Anwar C. Biting Pattern and Seasonality of Filariasis Vector of Mansonia spp. in Endemic Area of Banyuasin Regency, South Sumatera, Indonesia. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6138] [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
The diversity and biting activity of Mansonia is important to be determined as to predict the incriminated vector and pattern the mosquito behaviour in establishing the vector control programme. The present study has been successfully conducted to investigate the prolonged biting behaviour of Mansonia spp. in two villages in Banyuasin Regency, South Sumatera Province-Indonesia, using Human Landing Collection method (HLC) in indoor and outdoor for 14 months. The result shows that there are 4956 Mansonia spp. mosquitoes collected during the study comprising 6 species: Mansonia uniformis (40.37%), Mansonia annulifera (32.04%), Mansonia indiana (19.97%), Mansonia bonneae (5.28), Mansonia dives (2.14%); and Mansonia annulata (0.18%). The further investigation confirms that Mansonia uniformis (41.254%) and Mansonia bonneae (45.490%) become the most dominant species caught in Sedang village and Muara Sugih village, respectively and find higher biting activities in outdoor than indoor with biting peaked time at approximately 18.00-19.00. However, the biting activities is also observed in daytime, indicating the behaviour change of Mansonia spp. as the nocturnal mosquitoes. Furthermore, the periods of the highest biting rates are found in April 2017 and May 2017 in Sedang village and May 2018 in Muara Sugih Village. The high period of biting activities and behaviours become the valuable information to arrange the further controlling action of filariasis transmission in Sedang and Muara Sugih Villages as the endemic area of filariasis in South Sumatera, Indonesia.
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15
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Vantaux A, Riehle MM, Piv E, Farley EJ, Chy S, Kim S, Corbett AG, Fehrman RL, Pepey A, Eiglmeier K, Lek D, Siv S, Mueller I, Vernick KD, Witkowski B. Anopheles ecology, genetics and malaria transmission in northern Cambodia. Sci Rep 2021; 11:6458. [PMID: 33742030 PMCID: PMC7979810 DOI: 10.1038/s41598-021-85628-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/04/2021] [Indexed: 12/20/2022] Open
Abstract
In the Greater Mekong Subregion, malaria cases have significantly decreased but little is known about the vectors or mechanisms responsible for residual malaria transmission. We analysed a total of 3920 Anopheles mosquitoes collected during the rainy and dry seasons from four ecological settings in Cambodia (villages, forested areas near villages, rubber tree plantations and forest sites). Using odor-baited traps, 81% of the total samples across all sites were collected in cow baited traps, although 67% of the samples attracted by human baited traps were collected in forest sites. Overall, 20% of collected Anopheles were active during the day, with increased day biting during the dry season. 3131 samples were identified morphologically as 14 different species, and a subset was also identified by DNA amplicon sequencing allowing determination of 29 Anopheles species. The investigation of well characterized insecticide mutations (ace-1, kdr, and rdl genes) indicated that individuals carried mutations associated with response to all the different classes of insecticides. There also appeared to be a non-random association between mosquito species and insecticide resistance with Anopheles peditaeniatus exhibiting nearly fixed mutations. Molecular screening for Plasmodium sp. presence indicated that 3.6% of collected Anopheles were positive, most for P. vivax followed by P. falciparum. These results highlight some of the key mechanisms driving residual human malaria transmission in Cambodia, and illustrate the importance of diverse collection methods, sites and seasons to avoid bias and better characterize Anopheles mosquito ecology in Southeast Asia.
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Affiliation(s)
- Amélie Vantaux
- Malaria Molecular Epidemiology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia.
| | - Michelle M Riehle
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Eakpor Piv
- Malaria Molecular Epidemiology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Elise J Farley
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Sophy Chy
- Malaria Molecular Epidemiology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Saorin Kim
- Malaria Molecular Epidemiology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Anneli G Corbett
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Rachel L Fehrman
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Anais Pepey
- Malaria Molecular Epidemiology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Karin Eiglmeier
- Unit of Insect Vector Genetics and Genomics, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France.,CNRS Unit of Evolutionary Genomics, Modeling, and Health (UMR2000), Institut Pasteur, Paris, France
| | - Dysoley Lek
- National Center for Parasitology, Entomology and Malaria Control Program, Phnom Penh, Cambodia.,School of Public Health, National Institute of Public Health, Phnom Penh, Cambodia
| | - Sovannaroth Siv
- National Center for Parasitology, Entomology and Malaria Control Program, Phnom Penh, Cambodia
| | - Ivo Mueller
- Malaria: Parasites and Hosts Unit, Institut Pasteur, Paris, France
| | - Kenneth D Vernick
- Unit of Insect Vector Genetics and Genomics, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France.,CNRS Unit of Evolutionary Genomics, Modeling, and Health (UMR2000), Institut Pasteur, Paris, France
| | - Benoit Witkowski
- Malaria Molecular Epidemiology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
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16
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Wang H, Wang Y, Cheng P, Wang H, Wang H, Liu H, Zhang C, Gong M. The Larval Density of Mosquitos (Diptera: Culicidae) in Jiaxiang County, Shandong Province, China: Influence of Bacterial Diversity, Richness, and Physicochemical Factors. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.616769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
As Jiaxiang County of Shandong province is an area with complex mosquito vector composition, it is necessary to investigate the relationship between bacterial diversity, physicochemical factors, and larval density. Therefore, the physicochemical properties of 46 breeding sites for six kinds of habitat types (small puddles, small water containers, paddy fields, large water containers, irrigation channels, and drainage ditches) were investigated by a multiparameter analyzer; the water’s bacterial diversity was analyzed by the 16S rRNA full-length sequencing method. Spearman correlation and multiple linear regression were used to analyze the correlation between larval density and variables. The variables analyzed were dissolved oxygen, pH, hardness, turbidity, conductivity, temperature, ammonia nitrogen, water depth, and distance from the nearest house. One-Way ANOVA was used to understand whether there are differences in bacterial diversity in different habitats. Pearson linear correlation model was used to analyze the effects of bacterial diversity and richness on mosquito densities in breeding sites. A total of 3291 larvae were captured, and a total of 6 species of 4 genera were identified. The identified species were Culex pipiens pallens, Aedes albopictus, Anopheles sinensis, Culex tritaeniorhynchus, Culex bitaeniorhynchus, and Mansonia uniformis. The density and species can be jointly affected by physicochemical properties and bacterial diversity, especially Shannon index and distance from the nearest house. In general, the physicochemical parameters and bacterial diversity of different habitats were significantly different. Even for the same habitat type, the physicochemical parameters varied greatly due to different environments.
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17
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Liu Z, Zhang Y, Tong MX, Zhang Y, Xiang J, Gao Q, Wang S, Sun S, Jiang B, Bi P. Nonlinear and Threshold Effect of Meteorological Factors on Japanese Encephalitis Transmission in Southwestern China. Am J Trop Med Hyg 2020; 103:2442-2449. [PMID: 33124540 DOI: 10.4269/ajtmh.20-0040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Although previous studies have reported that meteorological factors might affect the risk of Japanese encephalitis (JE), the relationship between meteorological factors and JE remains unclear. This study aimed to evaluate the relationship between meteorological factors and JE and identify the threshold temperature. Daily meteorological data and JE surveillance data in Dazhou, Sichuan, were collected for the study period from 2005 to 2012 (restricting to May-October because of the seasonal distribution of JE). A distributed lag nonlinear model was used to analyze the lagged and cumulative effect of daily average temperature and daily rainfall on JE transmission. A total of 622 JE cases were reported over the study period. We found JE was positively associated with daily average temperature and daily rainfall with a 25-day lag and 30-day lag, respectively. The threshold value of the daily average temperature is 20°C. Each 5°C increase over the threshold would lead to a 13% (95% CI: 1-17.3%) increase in JE. Using 0 mm as the reference, a daily rainfall of 100 mm would lead to a 132% (95% CI: 73-311%) increase in the risk of JE. Japanese encephalitis is climate-sensitive; meteorological factors should be taken into account for the future prevention and control measure making, especially in a warm and rainy weather condition.
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Affiliation(s)
- Zhidong Liu
- Department of Personnel, Qilu Hospital of Shandong University, Jinan, People's Republic of China
| | - Yiwen Zhang
- Cheeloo College of Medicine, Shandong University Climate Change and Health Center, Jinan, People's Republic of China.,Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | | | - Ying Zhang
- School of Public Health, China Studies Centre, The University of Sydney, Sydney, Australia
| | - Jianjun Xiang
- School of Public Health, Fujian Medical University, Fuzhou, People's Republic of China.,School of Public Health, The University of Adelaide, Adelaide, Australia
| | - Qi Gao
- Cheeloo College of Medicine, Shandong University Climate Change and Health Center, Jinan, People's Republic of China.,Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Shuzi Wang
- Cheeloo College of Medicine, Shandong University Climate Change and Health Center, Jinan, People's Republic of China.,Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Shuyue Sun
- National Meteorological Center, China Meteorological Administration, Beijing, People's Republic of China
| | - Baofa Jiang
- Cheeloo College of Medicine, Shandong University Climate Change and Health Center, Jinan, People's Republic of China.,Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Peng Bi
- School of Public Health, The University of Adelaide, Adelaide, Australia
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18
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Ghosh SK, Podder D, Panja AK, Mukherjee S. In target areas where human mosquito-borne diseases are diagnosed, the inclusion of the pre-adult mosquito aquatic niches parameters will improve the integrated mosquito control program. PLoS Negl Trop Dis 2020; 14:e0008605. [PMID: 32797109 PMCID: PMC7449462 DOI: 10.1371/journal.pntd.0008605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 08/26/2020] [Accepted: 07/15/2020] [Indexed: 11/19/2022] Open
Abstract
In human communities inhabiting areas-such as West Bengal- India-where perpetuate the pre-imago & adult developmental stages of mosquitoes; many infectious diseases are still diagnosed such as Dengue, Malaria and Acute Encephalitis Syndrome. The control of the aquatic developmental stages is one of the easiest way to prevent the emergence of adults-the blood feeding adult females being thus prevented to sample their blood meal and to lay their eggs in the aquatic milieu where develop the aquatic pre-imaginal developmental stages. Moreover, reducing the adult population size also the probability of for the blood feeding adult female mosquitoes to act as hosts and vectors of the arboviruses such as dengue virus & Japanese encephalitis virus as well as of Plasmodium. Several environmental factors including water quality parameters are responsible for the selection of oviposition sites by the female mosquitoes. In our study, larval densities of three important mosquitoes (Aedes/A. albopictus, Anopheles/An. stephensi and Culex/C. vishnui) were measured and water qualities of their habitat i.e. pH, Specific Conductance, Dissolved Oxygen, Chemical Oxygen Demand, Total alkalinity (Talk), Hardness, Nitrate nitrogen and Ammonia nitrogen were analyzed in 2017 and 2018 in many districts of West Bengal where humans beings are suffering from arboviruses and /or malaria. Whereas we have found positive correlation of density of C. vishnui and A. albopictus with the water factors except Chemical Oxygen Demand (COD) and Talk, for An. stephensi all these factors except pH, COD and Talk have positive correlation. Hardness of the water shows positive correlation with the density of An. stephensi and C. vishnui but negative correlation with density of A. albopictus. Contour plot analysis demonstrates that occurrence of each mosquito species lies in between specific range of water factors. Inter- correlation analysis revealed that mosquitoes were negatively correlated with each other. A positive correlation of the water quality parameters and larval density, over two successive years, was also noticed. In conclusion, the increasing level of pollution due to industrial and other irresponsible waste management system which changes the water quality parameters may also influence mosquito population.
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Affiliation(s)
- Swapan Kumar Ghosh
- Molecular mycopathology lab, Biological Control and Cancer Research Unit, PG Department of Botany, Ramakrishna Mission Vivekananda Centenary College (Autonomous), Rahara, Kolkata, WB, India
- * E-mail:
| | - Dipanjan Podder
- Molecular mycopathology lab, Biological Control and Cancer Research Unit, PG Department of Botany, Ramakrishna Mission Vivekananda Centenary College (Autonomous), Rahara, Kolkata, WB, India
| | - Atanu Kumar Panja
- Molecular mycopathology lab, Biological Control and Cancer Research Unit, PG Department of Botany, Ramakrishna Mission Vivekananda Centenary College (Autonomous), Rahara, Kolkata, WB, India
| | - Sabyasachi Mukherjee
- Molecular mycopathology lab, Biological Control and Cancer Research Unit, PG Department of Botany, Ramakrishna Mission Vivekananda Centenary College (Autonomous), Rahara, Kolkata, WB, India
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19
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Wang Y, Cheng P, Jiao B, Song X, Wang H, Wang H, Wang H, Huang X, Liu H, Gong M. Investigation of mosquito larval habitats and insecticide resistance in an area with a high incidence of mosquito-borne diseases in Jining, Shandong Province. PLoS One 2020; 15:e0229764. [PMID: 32130263 PMCID: PMC7055894 DOI: 10.1371/journal.pone.0229764] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 02/13/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND To investigate mosquito larval habitats and resistance to common insecticides in areas with high incidence rates of mosquito-borne diseases in Jining, Shandong Province, and to provide a scientific basis for the future prevention and control of mosquito-borne diseases and the rational use of insecticides. METHODS AND RESULTS From June to September 2018, mosquito habitat characteristics and species compositions in Jintun town were studied through a cross-sectional survey. Larvae and pupae were collected in different habitats using the standard dipping technique. A total of 7,815 mosquitoes, comprising 7 species from 4 genera, were collected. Among them, Culex pipiens pallens (n = 5,336, 68.28%) was the local dominant species and found in all four habitats (rice paddies, irrigation channels, water containers, drainage ditches). There were 1,708 Cx. tritaeniorhynchus (21.85%), 399 Anopheles sinensis (5.11%), 213 Armigeres subalbatus (2.72%), 124 Aedes albopictus (1.59%), and 35 other (Cx. bitaeniorhynchus and Cx. halifaxii) (0.45%) mosquito samples collected. Spearman correlation analysis was employed to evaluate the relationship between larval density and the physicochemical characteristics of the breeding habitat. It was found that the larval density of Cx. tritaeniorhynchus correlated positively with water depth (r = 0.927 p = 0.003), the larval density of An. sinensis correlated positively with dissolved oxygen (DO) (r = 0.775 p = 0.041) and the larval density of Cx. p. pallens correlated positively with ammonia nitrogen (r = 0.527 p = 0.002). Resistance bioassays were carried out on the dominant populations of Cx. p. pallens: mosquitoes presented very high resistance to cypermethrin and deltamethrin, moderate resistance to dichlorvos (DDVP), and low resistance to Bacillus thuringiensis israelensis (Bti), with decreased susceptibility to propoxur. CONCLUSION We showed that mosquito species vary across habitat type and that the mosquito larval density correlated positively with certain physicochemical characteristics in different habitats. In addition, Cx. p. pallens developed different levels of resistance to five insecticides. Vector monitoring should be strengthened after an epidemic, and further research should be conducted to scientifically prevent and kill mosquitoes.
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Affiliation(s)
- Yang Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan,
Shandong Province, China
| | - Peng Cheng
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Boyan Jiao
- Jining Center for Disease Control and Prevention, Jining, Shandong Province, China
| | - Xiao Song
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan,
Shandong Province, China
| | - Haiyang Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan,
Shandong Province, China
| | - Haifang Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Huaiwei Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Xiaodan Huang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Hongmei Liu
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Maoqing Gong
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
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Franklinos LHV, Jones KE, Redding DW, Abubakar I. The effect of global change on mosquito-borne disease. THE LANCET. INFECTIOUS DISEASES 2019; 19:e302-e312. [PMID: 31227327 DOI: 10.1016/s1473-3099(19)30161-6] [Citation(s) in RCA: 212] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 02/19/2019] [Accepted: 03/21/2019] [Indexed: 01/01/2023]
Abstract
More than 80% of the global population is at risk of a vector-borne disease, with mosquito-borne diseases being the largest contributor to human vector-borne disease burden. Although many global processes, such as land-use and socioeconomic change, are thought to affect mosquito-borne disease dynamics, research to date has strongly focused on the role of climate change. Here, we show, through a review of contemporary modelling studies, that no consensus on how future changes in climatic conditions will impact mosquito-borne diseases exists, possibly due to interacting effects of other global change processes, which are often excluded from analyses. We conclude that research should not focus solely on the role of climate change but instead consider growing evidence for additional factors that modulate disease risk. Furthermore, future research should adopt new technologies, including developments in remote sensing and system dynamics modelling techniques, to enable a better understanding and mitigation of mosquito-borne diseases in a changing world.
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Affiliation(s)
- Lydia H V Franklinos
- Centre for Biodiversity and Environment Research, Division of Biosciences, University College London, London, UK; Institute for Global Health, University College London, London, UK.
| | - Kate E Jones
- Centre for Biodiversity and Environment Research, Division of Biosciences, University College London, London, UK; Institute of Zoology, Zoological Society of London, London, UK
| | - David W Redding
- Centre for Biodiversity and Environment Research, Division of Biosciences, University College London, London, UK
| | - Ibrahim Abubakar
- Institute for Global Health, University College London, London, UK
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Grech MG, Manzo LM, Epele LB, Laurito M, Claverie AÑ, Ludueña-Almeida FF, Miserendino ML, Almirón WR. Mosquito (Diptera: Culicidae) larval ecology in natural habitats in the cold temperate Patagonia region of Argentina. Parasit Vectors 2019; 12:214. [PMID: 31064397 PMCID: PMC6505294 DOI: 10.1186/s13071-019-3459-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/27/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Knowledge of immature habitats is an important focus for investigations of mosquito community ecology, and may improve our understanding of how environmental variables increase risk of mosquito-borne diseases by influencing the distributions and abundances of species. In Patagonia region, where climatic and ecological factors could be only borderline suitable for mosquito development, relatively little is known about larval ecology. The present study focuses on associations of environmental conditions in natural aquatic habitats with abundances of mosquito species that have colonized such habitats in Patagonia. METHODS We described the mosquito community composition within 26 natural temporary pools, and assessed the general relationships between environmental variables (pH, water temperature, conductivity, salinity, dissolved oxygen, aquatic plant cover and main nutrients) and larval abundances using redundancy analysis (RDA). Additionally, we compiled monthly climate data and vegetation indices for each larval habitat, and estimated the probability of presence for two of the most abundant species, describing through generalized linear models (GLM) the environmental, climatic and landscape variables-probability of occurrence relationships. RESULTS Seven species belonging to the genera Culex and Aedes were identified, with Culex apicinus, Cx. acharistus and Aedes albifasciatus being the most abundant. Mean larval densities were low (6.8 ± 2.8 larvae/dip), and the highest species richness and larval densities were recorded in northern and central areas. Aedes albifasciatus, a species of sanitary importance, was widely distributed, being the only one collected south of the 45th parallel of S latitude. RDA indicated that aquatic conductivity, pH, water depth, dissolved oxygen, ammonia and soluble reactive phosphorous accounted for the main part of the variation in the species composition. According to GLMs, wind speed was the variable that best described the presence of Ae. albifasciatus, and the probability of finding this species was positively associated with high wind speed values. On the other hand, the EVI vegetation index was the only variable included in the Cx. apicinus model, whereby there was a great probability of presence in arid areas with lower EVI values. CONCLUSIONS Our results enhance our knowledge of larval habitat ecology under the extreme environmental conditions of Patagonia and will guide future efforts to understand how multiple effects can affect mosquito ecology and public health at higher latitudes.
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Affiliation(s)
- Marta G. Grech
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Esquel, Chubut Argentina
- Universidad Nacional de la Patagonia San Juan Bosco, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Esquel, Esquel, Chubut Argentina
| | - Luz M. Manzo
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Esquel, Chubut Argentina
- Universidad Nacional de la Patagonia San Juan Bosco, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Esquel, Esquel, Chubut Argentina
| | - Luis B. Epele
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Esquel, Chubut Argentina
- Universidad Nacional de la Patagonia San Juan Bosco, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Esquel, Esquel, Chubut Argentina
| | - Magdalena Laurito
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Córdoba, Argentina
| | - Alfredo Ñ. Claverie
- Universidad Nacional de la Patagonia San Juan Bosco, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Esquel, Esquel, Chubut Argentina
| | - Francisco F. Ludueña-Almeida
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Córdoba, Argentina
| | - María L. Miserendino
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Esquel, Chubut Argentina
- Universidad Nacional de la Patagonia San Juan Bosco, Facultad de Ciencias Naturales y Ciencias de la Salud, Sede Esquel, Esquel, Chubut Argentina
| | - Walter R. Almirón
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Córdoba, Argentina
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Nebbak A, Willcox AC, Koumare S, Berenger JM, Raoult D, Parola P, Fontaine A, Briolant S, Almeras L. Longitudinal monitoring of environmental factors at Culicidae larval habitats in urban areas and their association with various mosquito species using an innovative strategy. PEST MANAGEMENT SCIENCE 2019; 75:923-934. [PMID: 30178568 DOI: 10.1002/ps.5196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/28/2018] [Accepted: 08/28/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND To prevent the risk of mosquito-borne disease outbreaks, larval source management remains the most sustainable and effective mosquito control strategy. The present study aimed to determine the influence of environmental characteristics of mosquito larval habitats in an urban area of Marseille, France. Fourteen sites containing water were monitored every 2 weeks from May to October 2015 for mosquito species occurrence and larval density, and environmental parameters were measured at each visit. Rapid and accurate species identification of mosquito larvae was performed using an innovative MALDI-TOF MS method. RESULTS A total of 6753 larvae (L1-L4) and pupae were collected, of which 35.8% (n = 2418) were speciated using MALDI-TOF MS. Correct identifications were obtained for 2259 specimens (93.4%). A total of five mosquito species were found, including Aedes (Ae.) albopictus, Culex (Cx.) p. pipiens, Cx. hortensis, Cx. impudicus, and Culiseta (Cs.) longiareolata. Larvae of the Culex genus were predominant in both density and distribution. Small, shaded pools of shallow water favored Ae. albopictus colonization, whereas the wide distribution of Cx. p. pipiens demonstrated that this species was weakly influenced by environmental changes. CONCLUSIONS The present work confirms that MALDI-TOF MS is a useful tool for mosquito speciation and suggests that understanding the environmental factors associated with the occurrence and density of mosquito species at the larval stage in Marseille may aid in the future implementation of mosquito control programs. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Amira Nebbak
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Alexandra C Willcox
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sekou Koumare
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- Malaria Research and Training Center, Faculté de médecine, Université de Bamako, Bamako, Mali
| | - Jean-Michel Berenger
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Didier Raoult
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Philippe Parola
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Albin Fontaine
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- Unité de Parasitologie et Entomologie, Département des Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Sébastien Briolant
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- Unité de Parasitologie et Entomologie, Département des Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Lionel Almeras
- IHU-Méditerranée Infection, Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- Unité de Parasitologie et Entomologie, Département des Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
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Jones RT, Tusting LS, Smith HMP, Segbaya S, Macdonald MB, Bangs MJ, Logan JG. The impact of industrial activities on vector-borne disease transmission. Acta Trop 2018; 188:142-151. [PMID: 30165072 DOI: 10.1016/j.actatropica.2018.08.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/25/2018] [Accepted: 08/25/2018] [Indexed: 10/28/2022]
Abstract
Industrial activities have produced profound changes in the natural environment, including the mass removal of trees, fragmentation of habitats, and creation of larval mosquito breeding sites, that have allowed the vectors of disease pathogens to thrive. We conducted a review of the literature to assess the impact of industrial activities on vector-borne disease transmission. Our study shows that industrial activities may be coupled with significant changes to human demographics that can potentially increase contact between pathogens, vectors and hosts, and produce a shift of parasites and susceptible populations between low and high disease endemic areas. Indeed, where vector-borne diseases and industrial activities intersect, large numbers of potentially immunologically naïve people may be exposed to infection and lack the knowledge and means to protect themselves from infection. Such areas are typically associated with inadequate access to quality health care, thus allowing industrial development and production sites to become important foci of transmission. The altered local vector ecologies, and the changes in disease dynamics that changes affect, create challenges for under-resourced health care and vector-control systems.
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Affiliation(s)
- Robert T Jones
- ARCTEC, London School of Hygiene & Tropical Medicine, London, United Kingdom.
| | - Lucy S Tusting
- Big Data Institute, Nuffield Department of Medicine, University of Oxford, United Kingdom
| | - Hugh M P Smith
- ARCTEC, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | | | | | - Michael J Bangs
- International SOS, Ltd., Papua Province, Indonesia; International SOS, Ltd., Lualaba Province, Democratic Republic of Congo
| | - James G Logan
- ARCTEC, London School of Hygiene & Tropical Medicine, London, United Kingdom; Department of Disease Control, London School of Hygiene & Tropical Medicine, United Kingdom
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Nikookar SH, Fazeli-Dinan M, Azari-Hamidian S, Mousavinasab SN, Aarabi M, Ziapour SP, Esfandyari Y, Enayati A. Correlation between mosquito larval density and their habitat physicochemical characteristics in Mazandaran Province, northern Iran. PLoS Negl Trop Dis 2017; 11:e0005835. [PMID: 28820882 PMCID: PMC5576754 DOI: 10.1371/journal.pntd.0005835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 08/30/2017] [Accepted: 07/26/2017] [Indexed: 11/18/2022] Open
Abstract
Characteristics of mosquito larval habitats are important in determining whether they can survive and successfully complete their developmental stages. Therefore, data on the ecological factors affecting mosquito density and abundance especially the physicochemical properties of water of their breeding sites, can possibly be helpful in implementing larval management programs. Mosquito larvae were collected using a standard 350 ml dipper from fixed habitats including: artificial pool, river edge, creek and etc, in 30 villages of 16 counties from May-December 2014. Water samples were collected during larval collection and temperature (°C), acidity (pH), turbidity (NTU), electrical conductivity (μS/cm), alkalinity (mg/l CaCO3), total hardness (mg/l), nitrate (mg/l), chloride (mg/l), phosphate (mg/l) and sulphate (mg/l) were measured using standard methods. Spearman correlation coefficient, Kruskal-Wallis test of nonparametric analysis, Chi-square (χ2) analysis, regression analysis and C8 interspecific correlation coefficient were used for data analysis. A total of 7,566 mosquito larvae belonging to 15 species representing three genera were collected from fixed larval breeding places. Culex pipiens was the dominant species except in four villages where An. maculipennis s.l. and Cx. torrentium were predominant. There was a significant positive correlation between the density of Cx. pipiens and electrical conductivity, alkalinity, total hardness and chloride, whereas no significant negative correlation was observed between physicochemical factors and larval density. The highest interspecific association of up to 0.596 was observed between An. maculipennis s.l/An. pseudopictus followed by up to 0.435 between An. maculipennis s.l/An. hyrcanus and An. hyrcanus/An. pseudopictus. The correlations observed between physicochemical factors and larval density, can possibly confirm the effect of these parameters on the breeding activities of mosquitoes, and may be indicative of the presence of certain mosquito fauna in a given region. Determination of association between mosquito larval abundance and physicochemical factors in aquatic habitats in Mazandaran Province was the purpose of this study. In 30 villages of 16 counties in the province, Culex pipiens, Cx. tritaeniorhynchus and An. maculipennis s.l. were the most abundant species discovered in larval habitats. The pair of species An. maculipennis s.l/An. pseudopictus has the highest interspecific association in the area. Culex pipiens showed the greatest compatibility compared with other species with a range of densities from the lowest to the highest in different habitats containing varying levels of physicochemical factors. Measuring physicochemical factors of water in larval habitats indicated that values of chloride, electrical conductivity, alkalinity and total hardness were significantly associated with the larval abundance in different larval habitats. The electrical conductivity, alkalinity, total hardness and chloride had significant positive correlation with the density of Cx. pipiens, whereas no negative correlation was obtained between larval density and physicochemical factors. These differences in preferences and association with varying levels of physicochemical factors can have vector-borne diseases control implications, because habitat changes through the manipulation of these factors to the detriment of vector species can ultimately lead to reduced abundance of vector species. The data may also be useful to predict changes in the densities of mosquito larvae or their transition should natural or artificial environmental modifications lead to alteration in the physicochemical factors.
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Affiliation(s)
- Seyed Hassan Nikookar
- Student Research Committee, Department of Medical Entomology and Vector Control, School of Public Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahmoud Fazeli-Dinan
- Assistant Professor, Department of Medical Entomology and Vector Control, School of Public Health and Health Sciences Research Center, Mazandaran University of Medical Science, Sari, Iran
| | - Shahyad Azari-Hamidian
- Associate Professor, School of Health and Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran
| | - Seyed Nouraddin Mousavinasab
- Associate Professor, Department of Biostatistics, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohsen Aarabi
- Assistant Professor, Department of Epidemiology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyyed Payman Ziapour
- Student Research Committee, Department of Medical Entomology and Vector Control, School of Public Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
- Department of Parasitology, North Research Center, Pasteur Institute of Iran, Amol, Iran
| | - Yahya Esfandyari
- Ph. D student, Department of Environmental Engineering, School of Public Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ahmadali Enayati
- Head of Medical Entomology Department, School of Public Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
- * E-mail:
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