Effect of larval crowding on adult mating behaviour in Drosophila melanogaster.
The effect of larval density on male mating success has been investigated with two strains of Drosophila melanogaster, a wild strain and a mutant strain, under low and high larval competition, and four different genotypic frequencies. The results show a strong sexual selection against mutant males when flies have been raised under low larval competition. Under high larval competition, there is a reduction in mating disadvantage of mutant males. In both instances, a frequency-dependent sexual selection exists. These results explain adequately the evolution of experimental populations where egg to adult viability and male mating success are the most important components of fitness.
Ribó
G
G
Centro de Investigación y Desarrollo de Barcelona (CSIC).
Ocaña
J
J
Prevosti
A
A
D000483:Alleles; D000818:Animals; D003441:Crowding; D004331:Drosophila melanogaster / Q000235:genetics*; D005127:Eye Color; D005260:Female; D005787:Gene Frequency; D007814:Larva / Q000235:genetics; D008297:Male; D009154:Mutation; D012641:Selection, Genetic; D012726:Sexual Behavior, Animal