在交配群体中，限制雄性条件下的秀丽隐杆线虫的生育/长寿权衡。
Fertility/longevity trade-offs under limiting-male conditions in mating populations of Caenorhabditis elegans.
机构信息
Institute for Behavioral Genetics, University of Colorado Boulder, Boulder, CO 80309, USA.
出版信息
Exp Gerontol. 2012 Oct;47(10):759-63. doi: 10.1016/j.exger.2012.06.010. Epub 2012 Jul 4.
Abstract
Evolutionary theories of aging suggest that trade-offs between longevity and fitness should be found under certain conditions. In C. elegans, there is little evidence for the existence of such trade-offs. We asked if fertility/longevity trade-offs exist in populations of randomly mating males and hermaphrodites. We set up a large population of young males and 5-day-old hermaphrodites that were no longer self-fertile. We then allowed them to mate for one day with an equal number young males and then separated hermaphrodites to individual plates and determined daily fertility of individual hermaphrodites. There was a significant negative relationship between late-life fertility and individual longevity.
摘要
衰老的进化理论表明，在某些条件下，长寿和适应性之间应该存在权衡。在秀丽隐杆线虫中，几乎没有证据表明存在这种权衡。我们想知道在随机交配的雄性和雌雄同体群体中是否存在生育/寿命权衡。我们建立了一个由大量年轻雄性和 5 天大的雌雄同体组成的群体，这些雌雄同体已经不再自交受精。然后，我们让它们与等量的年轻雄性交配一天，然后将雌雄同体分开到单独的培养皿中，并确定每个雌雄同体的每日生育能力。寿命晚期的生育能力与个体寿命之间存在显著的负相关关系。
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