Sexual dimorphism in chimpanzee (Pan troglodytes schweinfurthii) and human age-specific fertility.

ABSTRACT: Across vertebrates, species with intense male mating competition and high levels of sexual dimorphism in body size generally exhibit dimorphism in age-specific fertility. Compared with females, males show later ages at first reproduction and earlier reproductive senescence because they take longer to attain adult body size and musculature, and maintain peak condition for a limited time. This normally yields a shorter male duration of effective breeding, but this reduction might be attenuated in species that frequently use coalitionary aggression. Here, we present comparative genetic and demographic data on chimpanzees from three long-term study communities (Kanyawara: Kibale National Park, Uganda; Mitumba and Kasekela: Gombe National Park, Tanzania), comprising 581 male risk years and 112

SUBMITTER: Muller MN 

PROVIDER: S-EPMC7337577 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature