Life cycle and fecundity analysis of Lutzomyia shannoni (Dyar) (Diptera: Psychodidae)

RESUMO

The life cycle of Lutzomyia shannoni (Dyar) was described for laboratory conditions with maximum daily temperature of 27-30ºC, minimum daily temperatures of 22-27ºC and relative humidity between 87-99 per cent. Life cycle in each stage was as follows: egg 6-12 days (ave. 8.5 days); first stage larva 5-13 days (ave. 9.6 days); second stage larva 4-13 days (ave. 9.2 days); third stage larva 5-19 days (ave. 11.8 days); fourth stage larva 7-37 days (ave. 19.9 days); pupa 7-32 days (ave. 15.2 days). The life expectancy of adults ranged from 4 to 15 days (ave. 8.6 days). The entire egg to adult period ranged from 36 to 74 days (ave. 54.6 days). On average, each female oviposited 22.7 eggs; the average egg retention per female was 24.3 eggs.