Male fiddler crabs prefer conspecific females during simultaneous, but not sequential, mate choice
Mate choice is potentially beneficial whenever prospective mates vary in quality, but when mates are encountered sequentially the cost of rejecting a current mating opportunity affects the net benefit of choosiness by lowering the mating rate. There is, however, no reduction in mating rate when choosing among potential mates that are encountered simultaneously. In general, mating with a heterospecific is costly as the resultant offspring are of low fitness. It is often argued that males, unlike...[Show more]
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