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<p>Male crickets transfer sperm via a spermatophore, which also contains compounds that enhance ovulation, egg hatching, and the female's longevity. These compounds also may induce mechanisms to guarantee males’ paternity. In <i>Macroanaxipha macilenta</i> (Saussure, 1897)<i>,</i> there are two male morphs, the Wide-Forewing, and the Narrow-Forewing. During mating, Wide-Forewing males transfer one spermatophore to the female, whereas Narrow-Forewing males transfer two. We analyzed the effects of spermatophores on the fecundity and lifespan of females mated with Wide-Forewing and Narrow-Forewing males. While both types of spermatophores contain sperm, reproductive success varied between the two groups. We found that 41.37% of the females mated with Wide-Forewing and 30.46% of the females mated with Narrow-Forewing males had offspring. The study shows that while spermatophore consumption does not affect fecundity. Moreover, females mated with Narrow-Forewing males had a longer lifespan than females mated with Wide-Forewing males. Our results suggest that Wide-Forewing and Narrow-Forewing males might represent alternative mating tactics with different payoffs.</p>

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Alternative male mating tactics and direct benefits via spermatophore transfer in the neotropical cricket Macroanaxipha macilenta (Saussure, 1897)

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  • 发表日期：

    2026年1月7日

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  • Anahi Elias-Quevedo,
  • Mario E. Favila,
  • Raúl Cueva del Castillo

摘要

Male crickets transfer sperm via a spermatophore, which also contains compounds that enhance ovulation, egg hatching, and the female's longevity. These compounds also may induce mechanisms to guarantee males’ paternity. In Macroanaxipha macilenta (Saussure, 1897), there are two male morphs, the Wide-Forewing, and the Narrow-Forewing. During mating, Wide-Forewing males transfer one spermatophore to the female, whereas Narrow-Forewing males transfer two. We analyzed the effects of spermatophores on the fecundity and lifespan of females mated with Wide-Forewing and Narrow-Forewing males. While both types of spermatophores contain sperm, reproductive success varied between the two groups. We found that 41.37% of the females mated with Wide-Forewing and 30.46% of the females mated with Narrow-Forewing males had offspring. The study shows that while spermatophore consumption does not affect fecundity. Moreover, females mated with Narrow-Forewing males had a longer lifespan than females mated with Wide-Forewing males. Our results suggest that Wide-Forewing and Narrow-Forewing males might represent alternative mating tactics with different payoffs.