Evolutionary Genetics and Arthropod-borne Disease: The Yellow Fever Mosquito

Tabachnick, Walter J.

doi:10.1093/ae/37.1.14

Cited by 206 publications

(210 citation statements)

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“…The feral morph A. aegypti formosus preferentially occupies ecotonal, disturbed habitats on the Kenyan coast [7], which may have predisposed this species for subsequent domestic adaptations within Africa, as hypothesized by Tabachnick [8]. In its native Asian range, A. albopictus is also ecotonal, occurring preferentially on forest fringes, which is the habitat preference also observed in its invasive range [9] and has probably contributed to its invasive success worldwide [3].…”

Section: Attributes Of Invasivenessmentioning

confidence: 99%

Invasiveness ofAedes aegyptiandAedes albopictusand Vectorial Capacity for Chikungunya Virus

2016

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In this review, we highlight biological characteristics of Aedes aegypti and Aedes albopictus, 2 invasive mosquito species and primary vectors of chikungunya virus (CHIKV), that set the tone of these species' invasiveness, vector competence, and vectorial capacity (VC). The invasiveness of both species, as well as their public health threats as vectors, is enhanced by preference for human blood. Vector competence, characterized by the efficiency of an ingested arbovirus to replicate and become infectious in the mosquito, depends largely on vector and virus genetics, and most A. aegypti and A. albopictus populations thus far tested confer vector competence for CHIKV. VC, an entomological analog of the pathogen's basic reproductive rate (R 0 ), is epidemiologically more important than vector competence but less frequently measured, owing to challenges in obtaining valid estimates of parameters such as vector survivorship and host feeding rates. Understanding the complexities of these factors will be pivotal in curbing CHIKV transmission.

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Section: Attributes Of Invasivenessmentioning

confidence: 99%

Invasiveness ofAedes aegyptiandAedes albopictusand Vectorial Capacity for Chikungunya Virus

2016

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“…Ambas se consideran especies invasoras, ya que han colonizado exitosamente muchos sitios fuera de sus ámbitos nativos (1). Aedes aegypti, originaria de África, migró al Nuevo Mundo durante los siglos XV al XVII a bordo de los barcos que transportaban esclavos (2,3). Las múltiples invasiones de Ae.…”

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Ecología de Aedes aegypti y Aedes albopictus en América y la transmisión de enfermedades

Rey

Lounibos

2015

biomedica

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La reciente expansión geográfica del mosquito Aedes albopictus ha estado acompañada en algunos sitios por la disminución en la abundancia o por la eliminación local de Aedes aegypti, pero las dos especies aún coexisten en extensas regiones de América. En este trabajo se ofrece un resumen de los posibles mecanismos responsables de sus patrones de abundancia y desplazamiento, así como de su significado en cuanto a la transmisión de enfermedades. Entre los mecanismos observados, se encuentran la competencia por recursos, las diferencias en la capacidad para soportar la inanición, la competencia aparente a través de efectos diferenciales del parásito Ascogregarina taiwanensis, y la inhibición causada por larvas de Ae. albopictus en el desarrollo de los huevos de Ae. aegypti. Un mecanismo propuesto como promotor de la coexistencia de estas especies es la segregación en diferentes hábitats, lo que evita la competencia directa. Aedes aegypti predomina en áreas urbanas, Ae. albopictus en áreas rurales, y las dos especies coexisten en áreas periurbanas. Existen pruebas de que la distribución de Ae. aegypti y Ae. albopictus también puede verse afectada en ciertas áreas, por la distancia desde la costa. Otra posible causa de la rápida desaparición de Ae. aegypti es la interferencia reproductiva entre las dos especies. De acuerdo con esta hipótesis, los efectos asimétricos de los apareamientos entre especies favorecen a Ae. albopictus. Este tipo de interferencia reproductiva podría ser la causante de la eliminación de poblaciones simpátricas de las especies involucradas y de la rapidez con que Ae. aegypti ha desaparecido de muchos lugares en América luego de la invasión de Ae. albopictus. Palabras clave:Aedes, arbovirus, virus chikungunya, dengue, hábitat. doi: http://dx.doi.org/10.7705/biomedica.v35i2.2514 Ecology of Aedes aegypti and Aedes albopictus in the Americas and disease transmissionThe recent range expansion of the mosquito Aedes albopictus has been associated in some areas by declines in abundance or local elimination of Aedes aegypti, but the two species still coexist in large regions of the Americas. We offer a summary of the possible mechanisms responsible for the abundance and displacement pattern observed and of their significance in terms of disease transmission. Among these mechanisms we may mention the competition for limiting resources, the differences in the ability to withstand starvation, the apparent competition through differential effects of the parasite Ascogregarina taiwanensis, and the inhibition of Ae. aegypti egg development by Ae. albopictus larvae. Habitat segregation has been proposed as a mechanism promoting the coexistence of the two species through avoidance of direct competition. Aedes aegypti predominates in urban areas, Ae. albopictus in rural ones, and both species coexist in the suburbs. There is also evidence that in certain areas, habitat segregation in terms of distance from the coast can influence the distribution of both species. Another possible cause of the rapid disappearanc...

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“…aegypti como cepa domiciliada tuvo lugar en el norte de África a partir de un ancestro selvático, del cual una población se dividió alopátricamente y se dispersó por el mundo, llegando a América con la trata de esclavos (2,3). Esto ha llevado a la definición de dos grupos divergentes de Ae.…”

Section: S: Número De Sitios Diferenciadoresunclassified

“…El dengue es una enfermedad viral emergente, con un patrón endemo-epidémico en muchas áreas de la región tropical y subtropical (1), lo que en parte se debe a la expansión y adaptación de su vector primario, Aedes aegypti (Diptera, Culicidae), en centros urbanos y periurbanos (2,3). Tanto la transmisión de la enfermedad como las densidades del mosquito varían en el tiempo y pueden correlacionarse con el cambio climático (4,5).…”

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Cambios genéticos temporales y micro geográficos de Aedes aegypti de Medellín, Colombia

et al. 2014

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con materiales, reactivos y herramientas analíticas Jorge Mario Cadavid y Winston Rojas: escritura del manuscrito Winston Rojas: supervisión del análisis de datos Todos los autores concibieron y diseñaron los experimentos. Cambios genéticos temporales y microgeográficos de Aedes aegypti en Medellín, Colombia Microgeographic and temporal genetic changes of Aedes aegypti from Medellín, ColombiaIntroduction: Aedes aegypti populations may experience changes in abundance and genetic diversity in addition to changes in their evolutionary capability to respond to vector control. The knowledge on the changes in genetic variation on a spatio-temporal scale improves the epidemiological understanding of dengue and supports the appropriate and timely design of vector control strategies. Objective: To assess the genetic changes, diversity and gene flow in six microgeographical populations of Ae. aegypti in Medellín for different epidemiological periods of dengue. Materials and methods: A total of 255 specimens from six different neighborhoods in Medellín were used to assess variations in the CO1 mtDNA haplotype composition, diversity and genetic differentiation for an epidemic period (2010) and an endemic period (2012). Results: Two groups of highly differentiated haplotypes were present in both periods, and a highfrequency haplotype was assessed for all neighborhoods. The highest haplotype diversity was recorded in 2012, but the maximum nucleotide diversity was recorded in 2010. No significant correlation between genetic and geographic distances was observed. Conclusions:The genetic composition of Ae. aegypti varies over time without a predictable pattern. In addition, the presence of a high-frequency haplotype in both periods could indicate a persistent variation adapted to vector control. However, the simultaneous movement of highly differentiated CO154 Biomédica 2015;35:53-61 Cadavid JM, Rúa G, Campo O, et al. haplotypes compatible with multiple introductions suggests that different gene pools would be suitable for transmission. These results are consistent with mosquito dispersion due to human activities, which would enable the rapid spread of the virus during epidemics in Medellin.

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Evolutionary Genetics and Arthropod-borne Disease: The Yellow Fever Mosquito

Cited by 206 publications

References 0 publications

Invasiveness ofAedes aegyptiandAedes albopictusand Vectorial Capacity for Chikungunya Virus

Invasiveness ofAedes aegyptiandAedes albopictusand Vectorial Capacity for Chikungunya Virus

Ecología de Aedes aegypti y Aedes albopictus en América y la transmisión de enfermedades

Cambios genéticos temporales y micro geográficos de Aedes aegypti de Medellín, Colombia

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