Modeling strategic sperm allocation: Tailoring the predictions to the species
| Autor: | H. Kern Reeve, Biz R. Turnell, Kerry L. Shaw |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Sperm Evolutionarily stable strategy 03 medical and health sciences 030104 developmental biology Cricket Statistics Genetics Mating General Agricultural and Biological Sciences Sperm precedence Sperm competition reproductive and urinary physiology Ecology Evolution Behavior and Systematics |
| Zdroj: | Evolution. 72:414-425 |
| ISSN: | 0014-3820 |
| Popis: | Two major challenges exist when empirically testing the predictions of sperm allocation theory. First, the study species must adhere to the assumptions of the model being tested. Unfortunately, the common assumption of sperm allocation models that females mate a maximum of once or twice does not hold for many, if not most, multiply and sequentially mating animals. Second, a model's parameters, which dictate its predictions, must be measured in the study species. Common examples of such parameters, female mating frequency and sperm precedence patterns, are unknown for many species used in empirical tests. Here, we present a broadly applicable model, appropriate for multiply, sequentially mating animals, and test it in three species for which data on all the relevant parameter values are available. The model predicts that relative allocation to virgin females, compared to nonvirgins, depends on the interaction between female mating rate and the sperm precedence pattern: relative allocation to virgins increases with female mating rate under first-male precedence, while the opposite is true under later-male precedence. Our model is moderately successful in predicting actual allocation patterns in the three species, including a cricket in which we measured the parameter values and performed an empirical test of allocation. |
| Databáze: | OpenAIRE |
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