versión impresa ISSN 0074-0276versión On-line ISSN 1678-8060
Mem. Inst. Oswaldo Cruz v.87 supl.1 Rio de Janeiro 1992
Estudos bionômicos de Dipetalogaster maximus (Uhler, 1894) (Hemiptera, Reduviidae, Triatominae): III. Dinâmica populacional
Instituto Oswaldo Cruz, Departamento de Entomologia, Laboratório nacional e Internacional de Referência em Taxonomia de Triatomíneos, Rio de Janeiro, Brasil
A population dynamics study of D. maximus was caried out under laboratory condictions (28-C e 65% ñ 5% U.R.) and the methodology was the same that have been used for hearing this insects. In order to evaluate the population growth rate of this species, during a 24 months period, five colonies started with a couple recently emerged were observed. Each couple (a male and a female) was mantained in a glass container measuring 20 cm of diameter and 20 cm in height with filter paper on the botton. The insects were monthly feeding with normal mice blood, and at this day the number of eggs, nymphal stages and adults was registered. All graphical representations of the populations growth rate showed the same shape. It was found that the average of nymphal stage represented 64.31% of the hole population whereas the oviposition curved showed to be inverse to this one (28.57%) a small percentage of adults was found: males 3.85% and females 3.12%. In this study observations on the biologycal cycle, longevity and fertility rates were also carried out.
Key words: Dipetalogaster maximus; Hemiptera; Triatominae; population dynamics