Effects of Toxorhynchites moctezuma larval predation on Aedes aegypti populations: Experimental evaluation.
Autor(es): Tikasingh, E. S.
Resumo: Predatory larvae of the mosquito Toxorhynchites moctezuma were used experimentally to control a standing crop of larvae of the dengue vector mosquito Ae. aegypti . Each week, fifty Ae. aegypti first instar larvae were introduced to each of five water-filled drums (220 litres) of the type commonly used for domestic water storage in Caribbean dwellings. At the beginning of the fourth week, a certain number (0, 1, 2, 5 or 10) of first instar Tx. moctezuma larvae were introduced to each drum and the daily yield of Ae. aegypti adults from each drum was monitored thereafter. The experiment was repeated three times. With only one or two Tx. moctezuma larvae, predation on Ae. aegypti larvae stopped the output of Ae. aegypti adults for 1 week. Five or ten Tx. moctezuma prevented any Ae. aegypti emergence for up to 16 weeks.
Palavras-Chave: Trinidad; Aquatic insects; Effects on; Insect larvae; Population levels
Imprenta: Medical and Veterinary Entomology, v. 6, n. 3, p. 266-271, 1992.
Descritores: Aedes aegypti - Dengue
Data de publicação: 1992
