Ovarian development in Culex nigripalpus and its implication for disease transmission, [turkey malaria]
1981
Nayar, J.K. | Knight, J.W. (Florida Univ., Vero Beach (USA). Inst. of Food and Agricultural Sciences, Florida Medical Entomology Lab.)
Ovarian development was investigated in wild and colonized Culex nigripalpus Theobald females. Blood-seeking females with morphologically distinct nulliparous, parous and "resorbed ovarian follicles" (as opposed to females with degenerating follicles) were collected from the field all year, indicating year around gonoactivity. During the cooler months a larger number of females with "resorbed follicles" were collected from the field than in warmer months. Laboratory experiments showed that "resorbed ovarian follicles" occurred in sucrose fed females when deprived of a blood meal after emergence. These "resorbed ovarian follicles" were functional, since most of them began to develop and mature after the females took a blood meal to repletion. Among females fed a partial blood meal, some did not begin ovarian development and, therefore, exhibited gonotrophic dissociation. Females fed partial blood meals had similar patterns of ovarian development, irrespective of temperature at which they were maintained. Implications of occurrence of females with "resorbed ovarian follicles" and disease transmission are discussed.
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