Longevity and lack of senescence in the red sea urchin Strongylocentrotus franciscanus
Longevity and lack of senescence in the red sea urchin Strongylocentrotus franciscanus
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DOI：
10.1016/j.exger.2008.04.015
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发表时间：
2008-08-01
影响因子：
3.9
通讯作者：
Ebert, Thomas A.
中科院分区：
文献类型：
--
作者：
Ebert, Thomas A.
红海胆Strongylocentrotus franciscanus是一种长寿的物种，根据实地的标记研究和文献中报告的放射性碳分析的证实，它的寿命可能超过100年。本文报告的特定尺寸生存率估计值显示，在14.6至18.1 cm的6个最大0.5 cm尺寸类别中，年生存率概率无变化。除了生存概率没有变化外，生殖能力也没有随着体型的增加而降低。红海胆没有显示出衰老的迹象，因此不符合长寿进化的一次性索马理论。(c)2008年爱思唯尔公司All rights reserved.
The red sea urchin Strongylocentrotus franciscanus is a long-lived species and may live in excess of 100 years based on tagging studies in the field and corroboration from radiocarbon analyses as reported in the literature. Size-specific survival estimates reported here show no change in annual Survival probability across the 6 largest 0.5 cm size classes from 14.6 to 18.1 cm. In addition to no change in Survival probability there is no reduction in reproductive capacity with size. Red sea urchins show no evidence of senescence and so do not fit well within the context of the disposable soma theory of the evolution of longevity. (c) 2008 Elsevier Inc. All rights reserved.