Seasonal abundance, biting cycle and parity of the mosquito Haemagogus leucocelaenus in Trinidad, West Indies
| Autor: | R. Ganesh, Dave D. Chadee, J. O. Hingwan, Elisha S. Tikasingh |
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| Rok vydání: | 1995 |
| Předmět: |
Wet season
Veterinary medicine Range (biology) media_common.quotation_subject West Indies Biology Sunset Population density Dry season medicine Sunrise Animals Humans Ecology Evolution Behavior and Systematics media_common Population Density General Veterinary Reproduction Yellow fever Ovary Age Factors Insect Bites and Stings medicine.disease Culicidae Trinidad and Tobago Insect Science Parasitology Female Seasons |
| Zdroj: | Medical and veterinary entomology. 9(4) |
| ISSN: | 0269-283X |
| Popis: | Adult female populations of Haemagogus leucocelaenus (Dyar and Shannon), the sylvan vector of yellow fever, were monitored weekly during 1981-82 by human collectors on the ground at Point Gourde in Chaguaramas Forest, 16 km west of Port of Spain, Trinidad. Hg.leucocelaenus showed only diurnal landing activity, from 06.00 to 18.00 hours (sunrise to sunset, universal time), with a single peak of activity between 10.00 and 14.00 hours. Densities of Hg.leucocelaenus during the wet season (May-November) were about double the level recorded during the dry season (December-April). Monthly parous rates averaged 53.9% (range 25-90%) and some females were up to five-pars. Retained eggs (range 2-6, mean 4/female) were found in the ovaries of 0.34% of landing females, all of which had stage 1 ovarian follicles for the next gonotrophic cycle. Therefore blood-feeding is not inhibited by egg retention. Hg.leucocelaenus vector potential is reappraised in the light of these findings. |
| Databáze: | OpenAIRE |
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