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Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060


QUEIROZ, Margareth Maria de Carvalho; MELLO, Rubens Pinto de  and  FREIRE, Nicolau Maués da Serra. The effect of different proportions of males and females over the Chrysomya albiceps (Wiedemann 1819) (Diptera, Calliphoridae) biotic potential and longevity under laboratory conditions. Mem. Inst. Oswaldo Cruz [online]. 1996, vol.91, n.2, pp.243-247. ISSN 0074-0276.

Chrysomya albiceps specimens were derived from colonies kept under laboratory conditions. The oviposition period, total number of eggs-mass and the weight of the eggs-mass (average/female) presented significant differences between colonies regarding the sexual ratio of 1male/1female (situation I), when compared to the other ratios (1male/3female, situation II), (1male/5female, situation III), (3male/1female, situation IV) and (5 male/1female, situation V). It was ascertained that the increase in the proportion of females, resulted in higher weight and greater number of ovipositions and lenghtening of the period of oviposition, leads to a decrease in their lifespan.

Keywords : Chrysomya albiceps; blowfly; biotic potential; longevity.

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