期刊
INTERNATIONAL JOURNAL OF PRIMATOLOGY
卷 32, 期 5, 页码 1133-1152出版社
SPRINGER
DOI: 10.1007/s10764-011-9530-y
关键词
First reproduction; Growth rates; Ontogeny; Sexual monomorphism; von Bertalanffy growthmodel
类别
资金
- Ministerio de la Produccion, Subsecretaria de Ecologia and Recursos Naturales
- Direccion de Fauna from Formosa Province
- Wenner-Gren Foundation
- L. S. B. Leakey Foundation
- National Geographic Society
- National Science Foundation [BCS-0621020]
- University of Pennsylvania Research Foundation
- Zoological Society of San Diego
- Deutsche Forschungsgemeinschaft [HU 1746/2-1]
Life history predicts that in sexually dimorphic species in which males are the larger sex, males should reach sexual maturity later than females (or vice versa if females are the larger sex). The corresponding prediction that in sexually monomorphic species maturational rates will differ little between the sexes has rarely been tested. We report here sex differences in growth and development to adulthood for 70 female and 69 male wild owl monkeys (Aotus azarai). In addition, using evidence from natal dispersal and first reproduction (mean: 74 mo) for 7 individuals of known age, we assigned ages to categories: infant, 0-6 mo; juvenile, 6.1-24 mo; subadult, 24.1-48 mo; adult >48 mo. We compared von Bertalanffy growth curves and growth rates derived from linear piecewise regressions for juvenile and subadult females and males. Growth rates did not differ between the sexes, although juvenile females were slightly longer than males. Females reached maximum maxillary canine height at ca. 2 yr, about a year earlier than males, and females' maxillary canines were shorter than males'. Thus apart from canine eruption and possibly crown-rump length, the development of Azara's owl monkeys conforms to the prediction by life history that in monomorphic species the sexes should develop at similar paces.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据