Survival of Aedes aegypti (Diptera, Culicidae) eggs in surface and subterranean breeding sites during the northern Queensland dry season

Russell, B.M., Kay, B.H., and Shipton, W.A. (2001) Survival of Aedes aegypti (Diptera, Culicidae) eggs in surface and subterranean breeding sites during the northern Queensland dry season. Journal of Medical Entomology, 38 (3). pp. 441-445.

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Abstract

The effect of a protracted dry season on the viability of Ae. aegypti (L.) eggs was examined in Townsville, northern Queensland, Australia. Eggs were placed in several different surface and subterranean larval habitats; and after four dry season months, only 1-10% of eggs remained viable in the surface and subterranean sites, respectively. Low humidity and predation by Periplaneta americana (L.) were the major causes of egg mortality in eggs in surface sites. P. americana was the most significant cause of egg predation in subterranean breeding sites but fungi, especially Penicillium citrinum Thom, covered egg batches within 15 d. Mycotoxins produced by the spores of P. citrinum are believed to have killed embryonating eggs. The high mortality rate of Ae. aegypti eggs during the dry season suggests that this survival strategy is unlikely to contribute to rapid and successful recolonization of surface sites at the end of the wet season.

Item ID: 13269
Item Type: Article (Research - C1)
ISSN: 0022-2585
Keywords: dry season; eggs; Penicillium citrinum; Periplantea americana; subterranean; Aedes aegypti
Date Deposited: 01 Mar 2013 04:05
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1199 Other Medical and Health Sciences > 119999 Medical and Health Sciences not elsewhere classified @ 100%
SEO Codes: 92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920405 Environmental Health @ 100%
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