A trade‐off between precopulatory and postcopulatory trait investment in male cetaceans

@article{Dines2015ATB,
  title={A trade‐off between precopulatory and postcopulatory trait investment in male cetaceans},
  author={James P Dines and Sarah L. Mesnick and Katherine Ralls and Laura Johanna May-Collado and Ingi Agnarsson and Matthew D. Dean},
  journal={Evolution},
  year={2015},
  volume={69}
}
Mating with multiple partners is common across species, and understanding how individual males secure fertilization in the face of competition remains a fundamental goal of evolutionary biology. Game theory stipulates that males have a fixed budget for reproduction that can lead to a trade‐off between investment in precopulatory traits such as body size, armaments, and ornaments, and postcopulatory traits such as testis size and spermatogenic efficiency. Recent theoretical and empirical studies… 

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Sperm competition and the evolution of precopulatory weapons: Testis size and amplexus position, but not arm strength, affect fertilization success in a chorusing frog

This work focused on the factors affecting postcopulatory fertilization success during group spawning, using paternity data from natural choruses of the chorusing frog Crinia georgiana to offer within species empirical support for recent sperm competition models that incorporate precopulatory male–male competition.

Experimental manipulation reveals a trade‐off between weapons and testes

A sample of adult males from the same population in the wild revealed a positive correlation between investment in testes and weapons, and a critical contribution to a growing body of literature suggesting the allocation of resources to pre‐ and post‐copulatory sexual traits is influenced by a resource allocation trade‐off.

Lack of Evolution of Sexual Size Dimorphism in Heteromyidae (Rodentia): The Influence of Resource Defense and the Trade-Off between Pre- and Post-Copulatory Trait Investment

Insight is provided into the factors driving observed patterns of sexual dimorphism in this iconic group and the need to consider a broader framework beyond sexual selection for better understanding the evolution of dimorphic traits in this family is highlighted.
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