Aedes aegypti(Diptera: Culicidae) Longevity and Differential Emergence of Dengue Fever in Two Cities in Sonora, Mexico

Abstract

Dengue virus, primarily transmitted by the Aedes aegypti (L.) mosquito, has rapidly expanded in geographic extent over the past several decades. In some areas, however, dengue fever has not emerged despite established Ae. aegypti populations. The reasons for this are unclear and have sometimes been attributed to socio-economic differences. In 2013 we compared Ae. aegypti adult density and population age structure between two cities in Sonora, Mexico: Hermosillo, which has regular seasonal dengue virus transmission, and Nogales, which has minimal transmission. Larval and pupal abundance was greater in Nogales, and adult density was only higher in Hermosillo during September. Population age structure, however, was consistently older in Hermosillo. This difference in longevity may have been one factor that limited dengue virus transmission in Nogales in 2013, as a smaller proportion of Ae. aegypti females survived past the extrinsic incubation period.

Spatio-temporal and neighborhood characteristics of two dengue outbreaks in two arid cities of Mexico

“…Adult Ae. aegypti populations in Hermosillo, have been shown to remain low until September/October, coinciding with peak transmission (Ernst et al, 2016).…”

Arbovirus Vectors of Epidemiological Concern in the Americas: A Scoping Review of Entomological Studies on Zika, Dengue and Chikungunya Virus Vectors

“…Eight studies modelled dengue transmission dynamics [184–191]. Lee et al [192] constructed a predictive model that accurately foresaw 75% of dengue outbreaks in Colombia. Reiner et al [184] reported that social proximity drives fine-scale heterogeneity in dengue transmission rates based on data from Peru.…”

“…Hatching rate was found to be affected by population density and climate, and presence of vectors was associated with dengue incidence [209]. Ernst et al [192] found no correlation between Ae. aegypti density and human age structure between two cities with different dengue transmission dynamics.…”

Perilaku Menghisap Darah dan Perkiraan Umur Populasi di Alam Nyamuk Potensial Vektor Filariasis di Desa Dadahup, Kabupaten Kapuas, Kalimantan Tengah

“…barbirostris dengan perkiraan umur 9,82 hari dengan peluang hidup per hari sebesar 90%. Dari angka tersebut diketahui bahwa umur dari tiga jenis nyamuk tersebut relatif lebih lama dari masa inkubasi e k s t r i n s i k , s e h i n g g a p a r a s i t b i s a menyelesaikan siklus hidupnya di dalam tubuh nyamuk dan kemampuan bertelur yang 25 semakin banyak. Masa inkubasi ekstrinsik ilariasis B. malayi dari stadium L1 menjadi L3 26 adalah 6-6,5 hari, namun ketika jumlah larva ilarial terlalu banyak ditubuh nyamuk maka akan memakan waktu lebih lama (9-13 2 7 hari), sehingga berdasarkan data yang diperoleh untuk wilayah Kalimantan Tengah menunjukkan bahwa yang memenuhi syarat sebagai nyamuk potensial vektor ilariasis B. malayi di Kabupaten Kapuas adalah Ma.…”