Extended longevity of reproductives appears to be common in Fukomys mole-rats (Rodentia, Bathyergidae).
Extended longevity of reproductives appears to be common in Fukomys mole-rats (Rodentia, Bathyergidae).
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延长的生殖寿命似乎在福基鼠（Rodentia，bathyergidae）中很常见。
DOI：
10.1371/journal.pone.0018757
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发表时间：
2011-04-13
期刊：
影响因子：
3.7
通讯作者：
Burda H
中科院分区：
文献类型：
--
作者：
Dammann P;Šumbera R;Massmann C;Scherag A;Burda H
非洲鼹鼠（Bathyergidae，啮齿目）包含几个社会，合作繁殖的物种，外部死亡率低，寿命异常长。所有的社会性深海水母都生活在多代同堂的家庭中，在那里繁殖倾向于少数繁殖个体。他们的大多数后代在其纳塔尔家庭中作为不活跃的生殖“帮手”，往往长达数年。鼹鼠社会的这种“生殖细分”可能对老龄化研究有意义，因为至少在一种社会性深海动物（安塞尔鼹鼠）中，繁殖者的衰老速度比非繁殖者慢得多。因此，这些动物提供了极好的条件，研究衰老的表观遗传学比较不同的寿命在相同的基因型没有不可避免的短期的物种间比较。有人声称，许多（如果不是所有的话）社会鼹鼠物种也可能进化出类似的衰老模式。然而，由于缺乏关于这一主题的可靠数据集，这一点仍不清楚。因此，我们分析了20年的繁殖记录的巨型鼹鼠mechowii，另一个社会bathyergid物种。我们发现，繁殖者确实比助手活得长得多（约。1.5-2.2倍数取决于性别），而不考虑社会等级或其他潜在的混淆因素。考虑到F. mechowii和F. anselli和未发表的第三种鼠（F. damarensis）基本上显示出相同的模式，似乎很可能是整个属的特征，因此是绝大多数社会鼹鼠的特征，在体细胞维持和有性生殖之间的经典权衡的逆转。
African mole-rats (Bathyergidae, Rodentia) contain several social, cooperatively breeding species with low extrinsic mortality and unusually high longevity. All social bathyergids live in multigenerational families where reproduction is skewed towards a few breeding individuals. Most of their offspring remain as reproductively inactive “helpers” in their natal families, often for several years. This “reproductive subdivision” of mole-rat societies might be of interest for ageing research, as in at least one social bathyergid (Ansell's mole-rats Fukomys anselli), breeders have been shown to age significantly slower than non-breeders. These animals thus provide excellent conditions for studying the epigenetics of senescence by comparing divergent longevities within the same genotypes without the inescapable short-comings of inter-species comparisons. It has been claimed that many if not all social mole-rat species may have evolved similar ageing patterns, too. However, this remains unclear on account of the scarcity of reliable datasets on the subject. We therefore analyzed a 20-year breeding record of Giant mole-rats Fukomys mechowii, another social bathyergid species. We found that breeders indeed lived significantly longer than helpers (ca. 1.5–2.2fold depending on the sex), irrespective of social rank or other potentially confounding factors. Considering the phylogenetic positions of F. mechowii and F. anselli and unpublished data on a third Fukomys-species (F. damarensis) showing essentially the same pattern, it seems probable that the reversal of the classic trade-off between somatic maintenance and sexual reproduction is characteristic of the whole genus and hence of the vast majority of social mole-rats.
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影响因子：
4.1
作者：
Ingram, CM;Burda, H;Honeycutt, RL
通讯作者：
Honeycutt, RL
DOI：
10.1098/rstb.2009.0120
发表时间：
2009-11-12
影响因子：
6.3
作者：
Clutton-Brock, Tim
通讯作者：
Clutton-Brock, Tim
影响因子：
--
作者：
BURDA, H;KAWALIKA, M
通讯作者：
KAWALIKA, M
影响因子：
2.3
作者：
JARVIS, JUM;BENNETT, NC
通讯作者：
BENNETT, NC
影响因子：
2.4
作者：
Braude, S
通讯作者：
Braude, S