The significance of postreproductive lifespans in killer whales: a comment on Robeck et al.: Table 1.
The significance of postreproductive lifespans in killer whales: a comment on Robeck et al.: Table 1.
复制标题
虎鲸繁殖后寿命的重要性：Robeck 等人的评论：表 1。
DOI：
10.1093/jmammal/gyw021
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发表时间：
2016
影响因子：
1.7
通讯作者：
Franks D
中科院分区：
文献类型：
--
作者：
Franks D
声称生殖和精算衰老在哺乳动物物种中很常见，因此在虎鲸中发现并不意外。然而，在大多数哺乳动物中，生殖衰老和体细胞衰老是一致的，并且生殖能力随着年龄的增长而逐渐下降。相比之下，有大量证据表明，相对于常驻虎鲸的体细胞衰老，生殖衰老异常加速，导致繁殖后寿命延长。我们证明，繁殖后寿命是虎鲸生活史的关键组成部分，并且对年龄估计的合理误差具有稳健性。
claim that reproductive and actuarial senescence is common in mammalian species and therefore not an unexpected finding in killer whales. However, in most mammals, reproductive and somatic senescence are aligned, and reproduction gradually declines with age. In contrast, there is a substantial evidence that reproductive senescence is unusually accelerated relative to somatic senescence in resident killer whales, resulting in a prolonged postreproductive lifespan. We demonstrate that a postreproductive lifespan is a key component of resident killer whale life history, and is robust to reasonable error in age estimates.