EntomologyShortAnswer - 1. Outline the basic principles...

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1. Outline the basic principles behind sexual selection. Describe why males are so commonly in competition over females and why females are so commonly choosy. One form of mating behavior that has evolved in insects is gift giving. Describe the mating system of one insect in which gift giving is important. What role does gift giving play in insect mating. Who gives the gift (male or female?) and who receives it? Explain gift giving in light of what you know about sexual selection. - Males: small gametes, reproductive success limited by number of matings, high variation in reproductive success, optimal strategy to fertilize max number of eggs - Females: large gametes, reproductive success limited by own physiology, low variation in reproductive success, optimal strategy: fertilize eggs with “best” sperm - Males compete over females because the more sperm they transfer, the more likely they are to have descendents. Females are allowed to be choosy. - Mormon male crickets are gift givers. They produce a protein rich spermatophylax along with the spermatophore. The female consumes the gift during sperm transfer. Male reproductive success is correlated with the size of the gift and the duration of feeding by the female. Females generally re-mate when presented with a small gift. Males are under strong sexual selection to produce a larger gift. 2. Compare and contrast holometabolous and hemimetabolous development. Name three orders that are holometabolous and three orders that are hemimetabolous. When in the
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EntomologyShortAnswer - 1. Outline the basic principles...

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