Autor(es): Delatte H, Gimonneau G, Triboire A, Fontenille D

Resumo: Aedes albopictus is a mosquito originating from Asia, which has extended its range worldwide the last decades. It is a competent vector for several arboviruses. It was first described in La Réunion (an isl- of the South West part of the Indian Ocean) in 1913. Since then, it has become the dominant Aedes species - a serious threat to public health, especially during the two last arboviruses outbreaks of dengue (1977) - chikungunya (2005-2006). Despite its pest status, data on the biology of this vector are scarce, especially the population present in the Indian Ocean (IO), which has never been studied in detail. Therefore, the immature development, survival, longevity, fecundity, - gonotrophic cycles of Ae. albopictus were studied for an F2 population of the IO. These biological parameters were studied in controlled conditions at eight constant temperatures (5, 10, 15, 20, 25, 30, 35, - 40 degrees C). The minimal threshold of immature stages development was found at 10.4 degrees C - its optimum at 29.7 degrees C. The shortest periods for immature development were found at 30 degrees C, with in average of 8.8 d. The optimum intrinsic rate of growth (r) was observed between 25 - 30 degrees C. The gonotrophic cycles were also evaluated, - the shortest cycles were found at 30 degrees C (mean, 3.5 d). Those results are according to the field repartition of this species in La Réunion, allowing Ae. albopictus survival at a large range of temperatures.

Palavras-Chave: Aedes albopictus; Arbovirus; Chikungunya epidemic; Demographic parameters; Biology

Imprenta: Journal of Medical Entomology, v. 46, n. 1, p. 33-41, 2009

Identificador do objeto digital: 10.1603/033.046.0105

Descritores: Chikungunya virus - Arbovirus ; Chikungunya virus - Flaviviridae ; Chikungunya virus - Pathogenesis ; Chikungunya Virus - Virus ; Chikungunya virus - Dengue ; Chikungunya virus - Public health

Data de publicação: 2009

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