Diel oviposition and fecundity of Anopheles oswaldoi in Trinidad, West Indies

Dave D. Chadee, John C Beier

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The diel oviposition periodicity of wild-caught Anopheles oswaldoi collected from the forest-ecotone habitat in Valencia, Trinidad, was studied in the laboratory by recording the performance of egg-laying individuals and a colony at 2-h intervals. Oviposition was almost exclusively nocturnal, with 95.3% of eggs and 91.3% of oviposition occurrences being observed during the scotophase. During the rest of the day, only 4.7% of eggs (8.7% occurrences) were recorded after dawn (0600-0800 h). Wild-caught females engorged on human blood under laboratory conditions matured, on average, 61.1 ± 32.3 follicles (range 56-135). Ranges of 50-69, 70-89, 90-109, and >110 follicles were matured by 12, 4, 4, and 3 gravid females, respectively. These findings provide vector operators with a window of time to maximize the impact of insecticides on An. oswaldoi populations.

Original languageEnglish
Pages (from-to)402-405
Number of pages4
JournalJournal of the American Mosquito Control Association
Volume12
Issue number3 PART 1
StatePublished - Sep 1 1996
Externally publishedYes

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Trinidad and Tobago
West Indies
Oviposition
Anopheles
oviposition
Fertility
fecundity
egg
Eggs
laying performance
operator regions
gravid females
ecotones
ecotone
scotophase
Periodicity
Insecticides
periodicity
insecticide
Ovum

ASJC Scopus subject areas

  • Insect Science

Cite this

Diel oviposition and fecundity of Anopheles oswaldoi in Trinidad, West Indies. / Chadee, Dave D.; Beier, John C.

In: Journal of the American Mosquito Control Association, Vol. 12, No. 3 PART 1, 01.09.1996, p. 402-405.

Research output: Contribution to journalArticle

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