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Morphological variation in the genus Chlorocebus: Ecogeographic and anthropogenically mediated variation in body mass, postcranial morphology, and growth

Turner, Trudy R. (Department of Anthropology, University of Wisconsin—Milwaukee, Milwaukee, Wisconsin 53201 ) ; Schmitt, Christopher A. (Department of Anthropology, Boston University, Boston, Massachusetts 02215 ) ; Cramer, Jennifer Danzy (Department of Sociology, Anthropology and Women's Studies, American Military University and American Public University, Charles Town, West Virginia 25414 ) ; Lorenz, Joseph (Department of Anthropology and Museum Studies, Central Washington University, Ellensburg, Washington, DC 98926 ) ; Grobler, J. Paul (Department of Genetics, University of the Free State, Bloemfontein, FS, South Africa ) ; Jolly, Clifford J. (CSHO, Department of Anthropology, New York University, and NYCEP, New York, New York 10003 ) ; Freimer, Nelson B. (Center for Neurobehavioral Genetics, University of California—Los Angeles, Los Angeles, California 90095 ) ;
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    Abstract Objectives Direct comparative work in morphology and growth on widely dispersed wild primate taxa is rarely accomplished, yet critical to understanding ecogeographic variation, plastic local variation in response to human impacts, and variation in patterns of growth and sexual dimorphism. We investigated population variation in morphology and growth in response to geographic variables (i.e., latitude, altitude), climatic variables (i.e., temperature and rainfall), and human impacts in the vervet monkey ( Chlorocebus spp.). Methods We trapped over 1,600 wild vervets from across Sub‐Saharan Africa and the Caribbean, and compared measurements of body mass, body length, and relative thigh, leg, and foot length in four well‐represented geographic samples: Ethiopia, Kenya, South Africa, and St. Kitts & Nevis. Results We found significant variation in body mass and length consistent with Bergmann's Rule in adult females, and in adult males when excluding the St. Kitts & Nevis population, which was more sexually dimorphic. Contrary to Rensch's Rule, although the South African population had the largest average body size, it was the least dimorphic. There was significant, although very small, variation in all limb segments in support for Allen's Rule. Females in high human impact areas were heavier than those with moderate exposures, while those in low human impact areas were lighter; human impacts had no effect on males. Conclusions Vervet monkeys appear to have adapted to local climate as predicted by Bergmann's and, less consistently, Allen's Rule, while also responding in predicted ways to human impacts. To better understand deviations from predicted patterns will require further comparative work in vervets.


  • 주제어

    Chlorocebus .   growth .   life history .   sexual dimorphism .   vervet.  

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