Male fertility and sex ratio at birth in red deer.
Science
; 314(5804): 1445-7, 2006 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-17138900
ABSTRACT
Efforts 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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Razão de Masculinidade
/
Cervos
/
Fertilidade
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article