Globally invasive, withdrawing at home: Aedes albopictus and Aedes japonicus facing the rise of Aedes flavopictus

Chaves, Luis Fernando

doi:10.1007/s00484-016-1162-7

Cited by 36 publications

(53 citation statements)

References 54 publications

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“…Results from this study showed that ENSO, rainfall and NDVI were associated with the number of malaria cases in Guna Yala during the study period (1998–2016). These results highlight the vulnerability of Guna population to malaria, an infection sensitive to climate change, and call for further studies about weather impact on malaria vector ecology, especially the temporal impact of weather fluctuations on population dynamics [ 81 , 82 ], something that has not been done for An. albimanus in the Comarca Guna Yala of Panamá, as well as the association of malaria vectors with the Gunas , paying special attention to their socio-economic conditions of poverty and cultural differences as an ethnic minority.…”

Section: Discussionmentioning

confidence: 99%

Climatic fluctuations and malaria transmission dynamics, prior to elimination, in Guna Yala, República de Panamá

Hurtado

Calzada

Rigg

et al. 2018

Malar J

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BackgroundMalaria has historically been entrenched in indigenous populations of the República de Panamá. This scenario occurs despite the fact that successful methods for malaria elimination were developed during the creation of the Panamá Canal. Today, most malaria cases in the República de Panamá affect the Gunas, an indigenous group, which mainly live in autonomous regions of eastern Panamá. Over recent decades several malaria outbreaks have affected the Gunas, and one hypothesis is that such outbreaks could have been exacerbated by climate change, especially by anomalous weather patterns driven by the EL Niño Southern Oscillation (ENSO).ResultsMonthly malaria cases in Guna Yala (1998–2016) were autocorrelated up to 2 months of lag, likely reflecting parasite transmission cycles between humans and mosquitoes, and cyclically for periods of 4 months that might reflect relapses of Plasmodium vivax, the dominant malaria parasite transmitted in Panamá. Moreover, malaria case number was positively associated (P < 0.05) with rainfall (7 months of lag), and negatively with the El Niño 4 index (15 months of lag) and the Normalized Difference Vegetation Index, NDVI (8 months of lag), the sign and magnitude of these associations likely related to the impacts of weather patterns and vegetation on the ecology of Anopheles albimanus, the main malaria vector in Guna Yala. Interannual cycles, of approximately 4-year periods, in monthly malaria case numbers were associated with the El Niño 4 index, a climatic index associated with weather and vegetation dynamics in Guna Yala at seasonal and interannual time scales.ConclusionThe results showed that ENSO, rainfall and NDVI were associated with the number of malaria cases in Guna Yala during the study period. These results highlight the vulnerability of Guna populations to malaria, an infection sensitive to climate change, and call for further studies about weather impacts on malaria vector ecology, as well as the association of malaria vectors with Gunas paying attention to their socio-economic conditions of poverty and cultural differences as an ethnic minority.Electronic supplementary materialThe online version of this article (10.1186/s12936-018-2235-3) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Climatic fluctuations and malaria transmission dynamics, prior to elimination, in Guna Yala, República de Panamá

Hurtado

Calzada

Rigg

et al. 2018

Malar J

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“…aegypti [ 32 , 39 ], Cx. quinquefasciatus [ 81 , 82 , 83 ] and other mosquito species [ 23 , 38 , 71 , 84 ], with patterns following the prediction of Schmalhausen’s law, the biological principle stating that organisms are sensitive not only to average environmental conditions but also to the environmental variability per se [ 25 ]. In our study, both Ae.…”

Section: Discussionmentioning

confidence: 99%

“…The effect of precipitation, by contrast, depends on the environmental context where mosquitoes live [ 24 ]. For example, in dry environments moderate rainfall is required to create more habitats for vectors [ 37 ], rainfall can drive vector abundance outbreaks in wet environments [ 38 , 39 ], and rainfall can drive the recruitment of larvae from diapausing eggs [ 40 ]. However, rainfall impacts are highly nonlinear [ 39 ], given that extreme rainfall might wash-out larvae from aquatic habitats depending on the mosquito species [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan

Chaves

Tsai

et al. 2018

Insects

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The assumption that vector abundance differences might drive spatial and temporal heterogeneities in vector-borne disease transmission is common, though data supporting it is scarce. Here, we present data from two common mosquito species Aedes aegypti (Linnaeus) and Culex quinquefasciatus Say, biweekly sampled as adults, from March 2016 through December 2017, with BG-sentinel traps in two neighboring districts of Kaohsiung City (KC), Taiwan. One district has historically been a dengue transmission hotspot (Sanmin), and the other a coldspot (Nanzih). We collected a total 41,027 mosquitoes, and we found that average mosquito abundance (mean ± S.D.) was higher in Sanmin (Ae. aegypti: 9.03 ± 1.46; Cx. quinquefasciatus: 142.57 ± 14.38) than Nanzih (Ae. aegypti: 6.21 ± 0.47; Cx. quinquefasciatus: 63.37 ± 8.71) during the study period. In both districts, Ae. aegypti and Cx. quinquefasciatus population dynamics were sensitive to changes in temperature, the most platykurtic environmental variable at KC during the study period, a pattern predicted by Schmalhausen’s law, which states that organisms are more sensitive to small changes in environmental variables whose average value is more uncertain than its extremes. Our results also suggest that differences in Ae. aegypti abundance might be responsible for spatial differences in dengue transmission at KC. Our comparative approach, where we also observed a significant increment in the abundance of Cx. quinquefasciatus in the dengue transmission hotspot, suggests this area might be more likely to experience outbreaks of other vector borne diseases and should become a primary focus for vector surveillance and control.

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“…Both Haemagogus and Sabethes are genera with species known to be active during daytime, and which include some species that are medically important, given their role in the transmission of yellow fever virus, another major arbovirus [ 84 , 85 ]. Similarly, the study would have greatly benefited by sampling mosquitoes in areas where no alphavirus transmission has been detected, in order to better understand the role of dominant vector species on disease transmission [ 38 , 86 ] or mosquito diversity on infection [ 41 ], while also looking at domestic and wildlife reservoirs, as done for other zoonotic vector borne diseases, for example Leishmaniasis [ 87 – 90 ], in the República de Panamá and for alphaviruses in other regions of Latin America [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

Enzootic mosquito vector species at equine encephalitis transmission foci in the República de Panamá

Torres

Samudio²,

Carrera

et al. 2017

PLoS ONE

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The identification of mosquito vector species present at arboviral enzootic transmission foci is important to understand transmission eco-epidemiology and to propose and implement prevention and control strategies that reduce vector-borne equine encephalitis transmission. The goal of this study was to identify mosquito species potentially involved in the transmission of enzootic equine encephalitis, in relation to their abundance and diversity at three endemic regions in the República de Panamá. We sampled adult mosquitoes during the dry and rainy season of Panamá. We employed CDC light traps with octanol, EV traps with CO2 and Trinidad 17 traps baited with live hamsters. Traps were deployed in the peridomicile and extradomicile of houses from 18:00 to 6:00 h. We estimated the abundance and diversity of sampled species. We collected a total of 4868 mosquitoes, belonging to 45 species and 11 genera, over 216 sampling nights. Culex (Melanoconion) pedroi, a major Venezuelan equine encephalitis vector was relatively rare (< 2.0% of all sampled mosquitoes). We also found Cx. (Mel) adamesi, Cx. (Mel) crybda, Cx. (Mel) ocossa, Cx. (Mel) spissipes, Cx. (Mel) taeniopus, Cx. (Mel) vomerifer, Aedes scapularis, Ae. angustivittatus, Coquillettidia venezuelensis, Cx. nigripalpus, Cx. declarator, Mansonia titillans, M. pseudotitillans and Psorophora ferox all species known to be vectorially competent for the transmission of arboviruses. Abundance and diversity of mosquitoes in the sampled locations was high, when compared with similar surveys in temperate areas. Information from previous reports about vectorial competence / capacity of the sampled mosquito species suggest that sampled locations have all the elements to support enzootic outbreaks of Venezuelan and Eastern equine encephalitides.

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Globally invasive, withdrawing at home: Aedes albopictus and Aedes japonicus facing the rise of Aedes flavopictus

Cited by 36 publications

References 54 publications

Climatic fluctuations and malaria transmission dynamics, prior to elimination, in Guna Yala, República de Panamá

Climatic fluctuations and malaria transmission dynamics, prior to elimination, in Guna Yala, República de Panamá

Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan

Enzootic mosquito vector species at equine encephalitis transmission foci in the República de Panamá

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