Terminal investment in multiple sexual signals: Immune-challenged males produce more attractive pheromones
Trade-offs between current and future resource allocation can select for elevated reproductive effort in individuals facing mortality. Males are predicted to benefit from increasing investment in costly sexually selected signals after experiencing an acute life span reduction, although few examples of such facultative terminal investment are known. In the mealworm beetle, Tenebrio molitor, males' odours become more attractive to females following a life-threatening immune challenge. However,...[Show more]
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