Modeling variation in the growth of wild and captive juvenile vervet monkeys in relation to diet and resource availability.

Autor: Jarrett JD; Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada.; Applied Behavioural Ecology and Ecosystems Research Unit, University of South Africa, Florida, Gauteng, South Africa., Bonnell T; Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada.; Applied Behavioural Ecology and Ecosystems Research Unit, University of South Africa, Florida, Gauteng, South Africa., Jorgensen MJ; Department of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina., Schmitt CA; Department of Anthropology and Biology, Boston University, Boston, Massachusetts., Young C; Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada.; Department of STET, Mammal Research Institute, University of Pretoria, Gauteng, South Africa., Dostie M; Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada.; Applied Behavioural Ecology and Ecosystems Research Unit, University of South Africa, Florida, Gauteng, South Africa., Barrett L; Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada.; Applied Behavioural Ecology and Ecosystems Research Unit, University of South Africa, Florida, Gauteng, South Africa., Henzi SP; Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada.; Applied Behavioural Ecology and Ecosystems Research Unit, University of South Africa, Florida, Gauteng, South Africa.
Jazyk: angličtina
Zdroj: American journal of physical anthropology [Am J Phys Anthropol] 2020 Jan; Vol. 171 (1), pp. 89-99. Date of Electronic Publication: 2019 Nov 01.
DOI: 10.1002/ajpa.23960
Abstrakt: Objectives: To compare longitudinal weight gain in captive and wild juvenile vervet monkeys and conduct an empirical assessment of different mechanistic growth models.
Methods: Weights were collected from two groups of captive monkeys and two consecutive cohorts of wild monkeys until the end of the juvenile period (~800 days). The captive groups were each fed different diets, while the wild groups experienced different ecological conditions. Three different growth curve models were compared.
Results: By 800 days, the wild juveniles were lighter, with a slower maximum growth rate, and reached asymptote earlier than their captive counterparts. There were overall differences in weight and growth rate across the two wild cohorts. This corresponded to differences in resource availability. There was considerable overlap in growth rate and predicted adult weight of male and females in the first, but not the second, wild cohort. Maternal parity was not influential. While the von Bertalanffy curve provided the best fit to the data sets modeled together, the Logistic curve best described growth in the wild cohorts when considered separately.
Conclusions: The growth curves of the two captive cohorts are likely to lie near the maximum attainable by juvenile vervets. It may be helpful to include deviations from these rates when assessing the performance of wild vervet monkeys. The comparison of wild and captive juveniles confirmed the value of comparing different growth curve models, and an appreciation that the best models may well differ for different populations. Choice of mechanistic growth model can, therefore, be empirically justified, rather than theoretically predetermined.
(© 2019 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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