Moth Sex Pheromones: An Evolutionary Perspective

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Abstract
Searching male moths appear to be engaging in an activity fundamentally different from a singing male cricket, but the energy expenditure and risk accrued in mate-seeking and in stridulation may be comparable. Intrasexual competition exists in both activities. Calling crickets attempt to outsignal one another (Alexander 1975), and male moths participate in a race to locate females. Female choice can operate in both situations. Ecological factors affect the specific activities (signaling/searching) of the sexes in pair-forming, while retaining the fundamental economic balance.