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尿 C 肽测定作为猕猴营养状况的标志物。

Urinary C-peptide measurement as a marker of nutritional status in macaques.

机构信息

Jr Research Group Primate Sexual Selection, Reproductive Biology Unit, German Primate Centre, Goettingen, Germany.

出版信息

PLoS One. 2011 Mar 30;6(3):e18042. doi: 10.1371/journal.pone.0018042.

Abstract

Studies of the nutritional status of wild animals are important in a wide range of research areas such as ecology, behavioural ecology and reproductive biology. However, they have so far been strongly limited by the indirect nature of the available non-invasive tools for the measurement of individual energetic status. The measurement of urinary C-peptide (UCP), which in humans and great apes shows a close link to individual nutritional status, may be a more direct, non-invasive tool for such studies in other primates as well and possibly even in non-primate mammals. Here, we test the suitability of UCPs as markers of nutritional status in non-hominid primates, investigating relationships between UCPs and body-mass-index (BMI), skinfold fatness, and plasma C-peptide levels in captive and free-ranging macaques. We also conducted a food reduction experiment, with daily monitoring of body weight and UCP levels. UCP levels showed significant positive correlations with BMI and skinfold fatness in both captive and free-ranging animals and with plasma C-peptide levels in captive ones. In the feeding experiment, UCP levels were positively correlated with changes in body mass and were significantly lower during food reduction than during re-feeding and the pre-experimental control condition. We conclude that UCPs may be used as reliable biomarkers of body condition and nutritional status in studies of free-ranging catarrhines. Our results open exciting opportunities for energetic studies on free-ranging primates and possibly also other mammals.

摘要

对野生动物营养状况的研究在生态学、行为生态学和生殖生物学等广泛的研究领域中非常重要。然而,到目前为止,由于现有的非侵入性个体能量状态测量工具的间接性质,这些研究受到了强烈的限制。尿 C 肽 (UCP) 的测量,在人类和大猿类中与个体营养状况密切相关,可能是其他灵长类动物以及可能甚至是非灵长类哺乳动物中进行此类研究的更直接、非侵入性的工具。在这里,我们测试 UCP 作为非人类灵长类动物营养状况标志物的适用性,研究 UCP 与身体质量指数 (BMI)、皮褶脂肪和血浆 C 肽水平之间的关系在圈养和自由放养的猕猴中。我们还进行了一项食物减少实验,每天监测体重和 UCP 水平。UCP 水平与圈养和自由放养动物的 BMI 和皮褶脂肪呈显著正相关,与圈养动物的血浆 C 肽水平呈显著正相关。在喂养实验中,UCP 水平与体重变化呈正相关,在食物减少期间显著低于重新喂养和实验前对照条件。我们得出结论,UCP 可作为研究自由放养食果性灵长类动物身体状况和营养状况的可靠生物标志物。我们的研究结果为自由放养灵长类动物和可能其他哺乳动物的能量研究开辟了令人兴奋的机会。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7888/3068145/2f9a762c452c/pone.0018042.g001.jpg

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