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Título

Male Fertility and Sex Ratio at Birth in Red Deer

AutorGomendio, Montserrat ; Malo, Aurelio F.; Soler, Ana J. ; Fernández-Santos, M. Rocío ; Esteso, Milagros C.; García, Andrés J. ; Roldán, Eduardo R. S. ; Garde, José Julián
Fecha de publicacióndic-2006
EditorAmerican Association for the Advancement of Science
CitaciónScience 314(5804): 1445-1447 (2006)
ResumenEfforts to test sex ratio theory have focused mostly on females. However, when males possess traits that could enhance the reproductive success of sons, males would also benefit from the manipulation of the offspring sex ratio. We tested the prediction that more-fertile red deer males produce more sons. Our findings reveal that male fertility is positively related to the proportion of male offspring. We also show that there is a positive correlation between the percentage of morphologically normal spermatozoa (a main determinant of male fertility) and the proportion of male offspring. Thus, males may contribute significantly to biases in sex ratio at birth among mammals, creating the potential for conflicts of interest between males and females.
Descripción3 pages.
Versión del editorhttp://dx.doi.org/10.1126/science.1133064
URIhttp://hdl.handle.net/10261/7776
DOI10.1126/science.1133064
ISSN0036-8075
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