Anopheles gambiae complex egg-stage survival in dry soil from larval development sites in western Kenya.

J. C. Beier, R. Copeland, C. Oyaro, A. Masinya, W. O. Odago, S. Oduor, D. K. Koech, C. R. Roberts

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

The potential for Anopheles egg survival in dry soil from larval development sites was investigated in western Kenya. A total of 230 dry soil samples collected in 1987, 1988 and 1989 yielded 126 first-instar Anopheles gambiae s.l. larvae from 2 to 5 days after flooding with water. These larvae were from dried animal hoofprints along streams (57.9%), from dried edges of permanent and temporary pools (41.3%) and from dried stream beds (0.8%). Larval density was 1.2 larvae/kg of soil from positive microhabitats in 1987 and 2.4 larvae/kg in 1988. Thirteen larvae from the 1989 soil samples, reared to adults, were identified by DNA probes as Anopheles gambiae sensu strictu (n = 6) and Anopheles arabiensis (n = 7). Experimentally, eggs from field-collected females remained viable up to 12 days for An. gambiae s.l. and 10 days for An. funestus. In western Kenya, egg viability in dry soil may represent a significant, short-term survival mechanism for 2 species of the An. gambiae complex.

Original languageEnglish (US)
Pages (from-to)105-109
Number of pages5
JournalJournal of the American Mosquito Control Association
Volume6
Issue number1
StatePublished - Mar 1 1990
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Public Health, Environmental and Occupational Health
  • Insect Science

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    Beier, J. C., Copeland, R., Oyaro, C., Masinya, A., Odago, W. O., Oduor, S., Koech, D. K., & Roberts, C. R. (1990). Anopheles gambiae complex egg-stage survival in dry soil from larval development sites in western Kenya. Journal of the American Mosquito Control Association, 6(1), 105-109.