Vital Statistics of Triatominae (Hemiptera: Reduviidae) Under Laboratory Conditions. I. Triatoma infestans Klug1

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Abstract
A statistical evaluation of the population dynamics of T. infestans is based on cohort experiments conducted under controlled laboratory conditions. Egg hatching, nymphal developmental time and mortality, adult male and female longevity and mortality, and female fecundity were computed, and results compared to information in the existing literature; in most cases there is good agreement, and large deviations can be attributed to differences in experimental conditions, particularly temperature, feeding and density. In addition to previously studied characteristics of the life cycle, the following population parameters were evaluated, and their numerical values interpreted both in terms of population dynamics and control approaches: life expectancy, intrinsic rate of natural increase, generation time, reproductive value, finite rate of increase, and stable age distribution. The importance of age distributions and dispersal in designing control strategies is pointed out. Finally the population characteristics and adaptation of T. infestans to its man-modified environment lead to the conclusion that this species is a “K-strategist“, existing at or near saturation levels in a stable environment.