Evolutionary Consequences of Male Driven Sexual Selection and Sex-Biased Fitness Modifications inDrosophila melanogasterand Members of thesimulansClade
| Autor: | Abha Ahuja, Monika Moglinicka, Scot De Vito, Wilfried Haerty, Santosh Jagadeeshan, Rama S. Singh |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Genetics 0303 health sciences education.field_of_study Natural selection Article Subject media_common.quotation_subject Antagonistic Coevolution Population Longevity Biology 010603 evolutionary biology 01 natural sciences Genetic load 03 medical and health sciences Evolutionary biology Sexual selection Mating Parental investment education Research Article 030304 developmental biology media_common |
| Zdroj: | International Journal of Evolutionary Biology |
| ISSN: | 2090-052X 2090-8032 |
| Popis: | Males have evolved a variety of behavioral, morphological, and physiological traits to manipulate their mates in order to maximize their chances of success. These traits are bound to influence how females respond to male behaviors and influence the nature of sexual selection/conflict. A common consequence of aggressive male mating strategies inDrosophila melanogasteris the reduction of female lifespan. Our study shows that this is common across members of thesimulansclade. Reduced life expectancy of females implies that female contribution to a population is less than that of males per generation. Fitness differences between the sexes in every generation will invariably affect overall population fitness. How natural selection responds to the female deaths and thereby the unequal fitness of the sexes has rarely been addressed. We shed light on this issue and provide evidence, which suggests that additional gains of fitness by males due to their longevity and continued mating may provide one explanation as to why the loss of female fitness may be “invisible” (effectively neutral) to natural selection. Male driven sexual selection and additional, transgenerational gains of male fitness can be an important force of evolutionary change and need to be tested with other organisms. |
| Databáze: | OpenAIRE |
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