Hermaphroditic sex allocation evolves when mating opportunities change
| Autor: | John R. Pannell, Marcel E. Dorken |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Male
0106 biological sciences EVO_ECOL Sexual Behavior Dioecy media_common.quotation_subject Disorders of Sex Development Optimal deployment Flowers 010603 evolutionary biology 01 natural sciences General Biochemistry Genetics and Molecular Biology Sexual Behavior Animal 03 medical and health sciences 0302 clinical medicine medicine Animals Humans Disorders of sex development Mating Mercurialis annua Crosses Genetic Selection (genetic algorithm) Sex allocation 030304 developmental biology media_common 0303 health sciences Agricultural and Biological Sciences(all) biology Biochemistry Genetics and Molecular Biology(all) Ecology Reproduction Gender Identity biology.organism_classification medicine.disease Biological Evolution Evolutionary biology 030220 oncology & carcinogenesis Female General Agricultural and Biological Sciences 030217 neurology & neurosurgery Malpighiaceae |
| DOI: | 10.1016/j.cub.2009.01.067 |
| Popis: | SummaryThe optimal deployment of reproductive resources by hermaphrodites to male versus female function (i.e., their sex allocation) depends directly on opportunities for mating. If hermaphrodites occur among females, selection should favor those with a male-biased allocation because increased male allocation enhances siring success when eggs are abundant [1–3]. Similarly, when hermaphrodites co-occur with males, selection should favor those that bias their allocation toward their female function. We tested these predictions by allowing hermaphrodites of the plant Mercurialis annua to evolve in either the presence or absence of males. In the presence of males, hermaphrodites did not evolve, probably because they were already strongly female biased in the base population. However, hermaphrodites mating in the absence of males evolved greater male allocation, as predicted. Our results provide the first demonstration of an evolutionary response to the frequency of unisexuals in hermaphroditic sex allocation, and they verify the quantitative phase predicted by models for the transition between hermaphroditism and dioecy [4, 5]. |
| Databáze: | OpenAIRE |
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