An extraordinary life span estimate for the clown anemonefish Amphiprion percula
An extraordinary life span estimate for the clown anemonefish Amphiprion percula
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DOI：
10.1111/j.1095-8649.2007.01445.x
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发表时间：
2007-06-01
影响因子：
2
通讯作者：
Garcia, M. B.
中科院分区：
文献类型：
--
作者：
Buston, P. M.;Garcia, M. B.
对巴布亚新几内亚马当泻湖的小丑海葵种群进行了为期1年的研究。从这项研究中，死亡事件和社会结构的数据被用来构建一个阶段结构矩阵模型，并估计不同类别的个人的平均死亡年龄（预期寿命）。根据该模型，估计了雌性中华按蚊的平均寿命。percula是种群中年龄最大的个体，30岁。这一估计比任何其他珊瑚礁雀鲷的估计寿命长两倍，比这种大小的鱼的预期寿命长六倍。这一结果补充了越来越多的证据，从广泛的类群，即生物体受到低水平的外部死亡率显示延缓衰老和寿命增加。有人建议，鱼类将是一个很好的组进行大规模的比较测试的进化理论的预测老化。(C)2007年，作者。
A population of the clown anemonefish Amphiprion percula was studied for 1 year, in Madang Lagoon, Papua New Guinea. From this study, data on mortality events and social structure were used to construct a stage-structured matrix model and estimate the average age at death (life expectancy) of various classes of individuals. Based on this model, it is estimated that the life expectancy of female A. percula, the oldest individuals in the population, is 30 years. This estimate is two times greater than the longevity estimated for any other coral reef damselfish and six times greater than the longevity expected for a fish of that size. The result complements the growing body of evidence, from widespread taxa, that organisms subject to low levels of extrinsic mortality show retarded senescence and increased longevity. It is suggested that fishes would be an excellent group for a broad scale comparative test of the predictions of the evolutionary theory of ageing. (C) 2007 The Authors.