oa Journal of the Entomological Society of Southern Africa - Developmental periods of insect parasites of Glossina morsitans orientalis Vanderplank (Diptera: Muscidae)
In many insects the developmental periods of the immature stages are related to the temperatures to which they are subjected. In other insects the developmental periods vary independently of temperature, sometimes due to the phenomenon of diapause (Andrewartha, 1961). The developmental periods of Glossina morsitans orientalis Vanderplank are of the former type, and puparial life increases from 4-5 weeks in the hot months of the year to 8-9 weeks in the cold months (Phelps, personal communication). However, not all the insect parasites of G. morsitans puparia appear to follow the same pattern. This was mentioned by Chorley (1929), who found a longer mean pupal period for both Mutilla glossinae and Thyridanthrax spp. during the winter months and again for the bombyliids from November to March.
Article metrics loading...