Question

1. Assuming dominance confers fitness in natural populations, what evolutionary advantage do female roaches gain by mating with a dominant male?

Answer 1

| Date: Ans - Page No. animals have evolved stralurgies to reduce risks of and its deleterious effects on the progeny. In such as the cusocial and been Many inbreeding Social anthropods, avoidance is typically achieved by the dipersal of breeders inbreeding from their native colony. However, studies in insects Suggest that kin presocial discrimination during mate chorce may be more Commen mechanism in Socially Simpler species with no reproductive division of labour. Here we examined this possibility in Subsocial Cockroach Nauphocta Cinerea, a model species for research in Sexual Selection, where malis establish dominance hierarchies to access Females and Control breeding dvoritories. When given a binary choice blu a sibling male and a non- Sibling male that had the opportunity to establish a hierarchy prior to the tists, females mated preferentially, with the dominant male, irrespective of kindship as body size. Despite the lack of min discrimination during mate choicu, inbred- mated females incevored Significant fitnest Cocusts, produan 201. less offspring than outbred-mated females, a We discuss how Social mating System of this territorial Coackroach may naturally limit the probability of sibling and the need to encounter reproduce, without for evolving actie inbreeding avoidance mechanums, such as kin recognition.