Mating behaviour of glossina pallidipes austen (diptera, glossinidae): genetic differences in copulation time between allopatric population
1978
JAENSON, THOMAS G.T.
Copulation duration of Glossina pallidipes from Lambwe Valley (0° 35′ S, 34° 15′ E) and Kibwezi Forest (2° 27′ S, 37° 55′ E) in Kenya, was investigated in the laboratory. The difference in mean copulation time between the populations was highly significant. Reciprocal copulations showed that the trait is predominantly or only determined by the male. F₁ and F₂ male hybrid durations were similar and intermediate between the parental durations. The variances of the F₂ hybrid durations were not significantly larger than those of the F₁ hybrids. Male hybrids from backcrosses had durations on the average intermediate between their parents'. Reciprocal F₁ hybrid male durations gave different means. It is inferred that the trait, in the two populations investigated, is under polygenic control by factors distributed on an unknown number of autosomes and on the X chromosomes.
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