Utilização de leptagrion siqueirai (odonata:coenagreonidae) como controladores biológicos de larvas e pupas de mosquitos.

Abstract

The main objective of this work is to verify the possibility of using L. siqueira nymphs as natural controllers of larvae and pupae of mosquitoes that present a biological cycle in epiphytic phytotelmata. The nymphs are captured in epiphytic bromeliads. On site, the bromeliad is identified, the existing water is collected, its insertion height in the host plant is measured, and all the existing animals are collected. In the laboratory, Odonata nymphs and Diptera larvae and pupae (Culicidae and others) are quantitatively and qualitatively analyzed. To date, about 120 nymphs of L. siqueirai have been captured in 60 bromeliads, mainly of the genus Aechmea, in the municipalities of Ourém-PA and around the city of Belém. In this ecotope, the following Culicidae species were identified: Culex (Microculex) pleuristriatus, Culex (Microculex) imitator, Culex (Melanoconion) ocellatus and Sabetis limatus, in addition to larvae of Chironomidae and Toxorhynchites. Feeding in the laboratory has been done with the same species found in nature