2004
DOI: 10.1590/s0073-47212004000200010
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Abstract: Thermal requeriments of Culex quinquefasciatus (Diptera, Culicidae) in Pelotas, Rio Grande do Sul, Brazil. The thermal requeriments of Culex quinquefasciatus (Say, 1823) and the number of generations in the year are determined. The colony to obtain eggs, larvae, pupae and adults was established under laboratory conditions. Every stage was maintained at constant temperature (15, 20, 25 and 30 o C), in cameras, with relative humidity of 80% ± 5 and photophase of 12 hours, to settle down the thermal inferior limi… Show more

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Cited by 14 publications
(9 citation statements)
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“…As expected, the total development time (from irst instar larva to adult emergence) was inversely related to the rearing temperature in the range of 7 o C to 25 o C, as observed for several mosquito species (e.g., Rueda et al 1990, Mahamood & Crans 1998, Ribeiro et al 2004, Monteiro et al 2007. The time required by the immatures maintained at the lowest temperatures to reach adulthood was extended between six to eight orders of magnitude as compared for those maintained at 25°C.…”
Section: Resultssupporting
confidence: 76%
See 1 more Smart Citation
“…As expected, the total development time (from irst instar larva to adult emergence) was inversely related to the rearing temperature in the range of 7 o C to 25 o C, as observed for several mosquito species (e.g., Rueda et al 1990, Mahamood & Crans 1998, Ribeiro et al 2004, Monteiro et al 2007. The time required by the immatures maintained at the lowest temperatures to reach adulthood was extended between six to eight orders of magnitude as compared for those maintained at 25°C.…”
Section: Resultssupporting
confidence: 76%
“…Pupal survivorship ranged from 5% (5/92) at 7°C up to 13% (12/92) at 15°C, and no larvae completed their development in temperatures > 30 o C (Table 1). Nevertheless, other culicids common to the south of Brazil and Argentina are able to complete their development in temperatures between 30 o C and 35ºC (Calado & Navarro-Silva 2002, Ribeiro et al 2004, Monteiro et al 2007. However, none of them have been detected on latitudes higher than 40ºS.…”
Section: Resultsmentioning
confidence: 98%
“…É possível que o mosquito adaptado às temperaturas médias mensais das suas regiões de origem, que estão acima dos 20°C, não se desenvolva quando submetido a temperaturas mais baixas, como a 17°C da presente pesquisa. Assim Ribeiro et al (2004) constataram desenvolvimento embrionário a 15°C em uma população de C. quinquefasciatus coletada em Pelotas, RS, onde as temperaturas mínimas estão abaixo dos 15°C durante o inverno, atribuindo tais aspectos à adaptação climática às condições ambientais daquela região.…”
Section: Resultsunclassified
“…Although Culex populations in these areas have shown resistance to thermal shock, they suffer reduced numbers of over-wintering individuals and lower metabolic activity during cold months 37 . Although no cases of heartworm have been identified from southern Brazil, there are records of encephalitis and arbovirosis 8 .…”
Section: Discussionmentioning
confidence: 99%