Journal article

Age-related male reproductive effort in two mountain ungulates of contrasting sexual size dimorphism

M Garel, DM Forsyth, A Loison, D Dubray, J-M Jullien, KG Tustin, D Maillard, J-M Gaillard

Canadian Journal of Zoology | CANADIAN SCIENCE PUBLISHING | Published : 2011

Abstract

In polygynous ungulates, the reproductive effort of adult males peaks during a short period in which feeding activities are sacrificed for mating activities. Hence, both fat reserves and body mass are predicted to decline markedly during this period. The decline is also predicted to be greater in fat reserves than in body mass because fat is catabolized before muscle, and to increase with the intensity of sexual selection. In contrast, no specific patterns are expected in females for which late gestation and lactation rather than mating are the energetically most demanding periods. We tested these hypotheses in two mountain ungulates of contrasting sexual size dimorphism (SSD): Himalayan tah..

View full abstract

University of Melbourne Researchers