Worker senescence and the sociobiology of aging in ants.
Worker senescence and the sociobiology of aging in ants.
复制标题
DOI：
10.1007/s00265-014-1826-4
复制
发表时间：
2014-12
影响因子：
2.3
通讯作者：
Traniello JF
中科院分区：
文献类型：
--
作者：
Giraldo YM;Traniello JF
衰老是指随着年龄的增长生理和行为功能的下降，已成为众多动物类群中重要的理论和实证研究的焦点。在无脊椎动物衰老的社会模式中，最突出的是蚂蚁，这是一种以生殖和不育表型为特征的多样化和生态优势的真社会性昆虫分支。在这篇综述中，我们批判性地研究了蚂蚁工蚁寿命的选择，并讨论了功能性衰老、寿命、任务表现和群体适应性之间的关系。我们没有发现强有力的或一致的支持假设，即蚂蚁的人口衰老是程序化的，或者它的必然预测，即没有经历外在死亡的工人在接近其自然寿命的年龄死亡。我们提出了关于选择如何通过其与群体规模的正相关关系来延长工蚁寿命的七个假设，并预测在某些条件下，大群体规模应该赋予多重和显著的适应优势。劳动力寿命延长带来的健康效益可以通过资源获取的增加、高效的劳动分工、集体决策的准确性、增强的异母护理和群体防御、降低的感染风险和劳动力维持的能量成本来调节。我们建议未来的研究途径来研究工蚁寿命的进化及其与群体适应性的关系，并得出结论，社会生物学、衰老理论和衰老机制研究的创新融合可以提高我们对蚂蚁工蚁寿命适应性本质的理解。
Senescence, the decline in physiological and behavioral function with increasing age, has been the focus of significant theoretical and empirical research in a broad array of animal taxa. Preeminent among invertebrate social models of aging are ants, a diverse and ecologically dominant clade of eusocial insects characterized by reproductive and sterile phenotypes. In this review, we critically examine selection for worker lifespan in ants and discuss the relationship between functional senescence, longevity, task performance, and colony fitness. We did not find strong or consistent support for the hypothesis that demographic senescence in ants is programmed, or its corollary prediction that workers that do not experience extrinsic mortality die at an age approximating their lifespan in nature. We present seven hypotheses concerning how selection could favor extended worker lifespan through its positive relationship to colony size and predict that large colony size, under some conditions, should confer multiple and significant fitness advantages. Fitness benefits derived from long worker lifespan could be mediated by increased resource acquisition, efficient division of labor, accuracy of collective decision-making, enhanced allomaternal care and colony defense, lower infection risk, and decreased energetic costs of workforce maintenance. We suggest future avenues of research to examine the evolution of worker lifespan and its relationship to colony fitness, and conclude that an innovative fusion of sociobiology, senescence theory, and mechanistic studies of aging can improve our understanding of the adaptive nature of worker lifespan in ants.
登录
查看更多内容
DOI：
10.1073/pnas.0605858103
发表时间：
2006-11-28
影响因子：
11.1
作者：
Brady, Sean G.;Schultz, Ted R.;Ward, Philip S.
通讯作者：
Ward, Philip S.
影响因子：
2.5
作者：
ADAMS, ES
通讯作者：
ADAMS, ES
DOI：
10.1098/rspb.2011.0062
发表时间：
2011-11-07
影响因子：
4.7
作者：
Batchelor, Tim P.;Briffa, Mark
通讯作者：
Briffa, Mark
影响因子：
3
作者：
Behrends, Andreas;Scheiner, Ricarda
通讯作者：
Scheiner, Ricarda
影响因子：
3.9
作者：
Amdam, GV;Simoes, ZLP;Omholt, SW
通讯作者：
Omholt, SW