Diet has been linked to lifespan in a broad range of animals. In particular, pronounced caloric restriction has been associated with increased longevity. Herein, the relationship of feeding environment and longevity is examined experimentally using Spinicaudatan crustaceans (“clam shrimp”) from the geographically widespread genus Eulimnadia. Two projects examine the effects of food differences on longevity, one comparing food environment early vs later in life and one comparing the effects of dietary restriction on longevity, growth, and reproduction. In the former, dietary restriction increased longevity, but only when diets were reduced later in life. A closer examination of the effects of dietary restriction in the second experiment did not find the expected trade-off of increased longevity and reduced reproductive output in the lowest-food treatment, but instead found an overall increase in both longevity and egg production on the low compared to the high food diet. Finally, a detailed analysis of the relationship of size (carapace length) with egg production was presented. This relationship could serve to obtain a rough estimate of reproductive output potential of fossil clam shrimps, of which typically only the carapace size can be assessed.

中文翻译：

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饮食限制对蛤蜊虾 Eulimnadia texana 寿命、生长和繁殖的影响

饮食与多种动物的寿命有关。特别是，明显的热量限制与延长寿命有关。在此，使用地理分布广泛的 Eulimnadia 属的棘尾类甲壳类动物（“蛤蜊虾”），通过实验研究了摄食环境与寿命的关系。两个项目研究了食物差异对长寿的影响，一个比较了生命早期与晚期的食物环境，一个比较了饮食限制对长寿、生长和繁殖的影响。在前者中，饮食限制可以延长寿命，但前提是在晚年减少饮食。在第二个实验中对饮食限制的影响进行更仔细的检查并没有发现在最低食物处理中延长寿命和减少生殖产量的预期平衡，而是发现在低食物处理中寿命和产蛋量总体增加与高热量饮食相比。最后，详细分析了大小（甲壳长度）与产蛋量的关系。这种关系可以用来粗略估计化石蛤虾的生殖产量潜力，其中通常只能评估甲壳大小。