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1.
Hardies SC; Martin SL; Voliva CF; Hutchison CA d; Edgell MH 《Molecular biology and evolution》1986,3(2):109-125
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Matt J. Kessler Barbara Yarbrough Richard G. Rawlins John Berard 《Journal of medical primatology》1984,13(2):57-66
Free-ranging rhesus macaques on the island of Cayo Santiago, Puerto Rico, were surveyed for intestinal parasites for the first time in over 40 years. Results were compared with the only previous study [10], and the relationships between the prevalence of Strongyloides and dominance rank, body weight, age, and matriline examined in the sampled population. 相似文献
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Arnould JP Morris MJ Rawlins DR Boyd IL 《Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology》2002,172(1):27-34
Plasma leptin levels were determined in 8 lactating female and 20 pup Antarctic fur seals (Arctocephalus gazella) during fasting periods of normal duration. Plasma leptin levels ranged from 1.35 3.19 ng x ml(-1) in lactating females and 1.79-4.80 ng x ml(-1) in pups and were not positively correlated with body mass or condition. A negative trend, however, was observed between plasma leptin levels and body condition in lactating females upon their arrival at the colony following a foraging trip (beginning of fast). In accordance with findings in other species, plasma leptin levels dropped significantly (P < 0.02) in response to the 17-19% drop in body mass experienced by pups during fasting. In contrast, plasma leptin levels in lactating females increased during the first 24 h of fasting before decreasing throughout the remaining 48 h of the fast. This unexpected result could be due to the high level of energy expenditure by seals as they swim back to the colony (i.e. post-exercise response) or may be influenced by the intense suckling activity experienced by females during the onshore fasting periods. The results of this study support recent findings in other carnivore species which suggest the primary physiological role of leptin in these species may not necessarily be as a signal of the magnitude of body energy reserves. 相似文献
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This report summarizes demographic data collected on the Cayo Santiago colony of rhesus monkeys from 1976-1983 and compares the results with those from 1959-1964 [8,9]. For males and nonpregnant/nonlactating, pregnant, and lactating females mean (+/- 1 SD), body weights, crown-rump lengths, and ponderal indices are tabulated for each age on a large (n = 586) single sampling of this free-ranging population of macaques. 相似文献
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