Changing Feeding Levels Reveal Plasticity in Elasmobranch Life History Strategies

IF 7.9 1区环境科学与生态学 Q1 ECOLOGY

Ecology Letters Pub Date : 2025-09-03 DOI:10.1111/ele.70201

Sol Lucas, Per Berggren, Ellen Barrowclift, Isabel M. Smallegange

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Abstract

Life history strategies are shaped by phylogeny, environmental conditions and individual energy budgets, and have implications for conservation biology. We summarised life history traits of 151 elasmobranch species into life history strategies for two contrasting feeding levels, representing two different environments, in a principal components analysis. Two axes, reproductive output and generation turnover, structure elasmobranch life history strategies. Species' positions in this life history space were not fixed but shifted to higher reproductive output when feeding level increased. We also found that both axes predicted population performance, but that population growth rate does not necessarily inform on a species' demographic resilience. Finally, neither axis predicted IUCN conservation status. Our analyses reveal plasticity in species life history strategies and warn against extrapolating the life history strategy framework from one environment to another when predicting a species' response to (climate) change, perturbations, and (over)exploitation.

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摄食水平的变化揭示了蛛形纲生命史策略的可塑性

生活史策略是由系统发育、环境条件和个体能量预算形成的，并对保护生物学有影响。通过主成分分析，将151种板蛛科动物的生活史特征归纳为两种不同摄食水平下的生活史策略。两个轴，生殖输出和世代更替，结构弹性枝生活史策略。物种在这一生活史空间中的位置不是固定的，而是随着摄食水平的提高而向更高的繁殖产出转移。我们还发现，这两个轴都能预测种群的表现，但种群增长率并不一定能反映一个物种的人口弹性。最后，两个轴都没有预测到IUCN的保护状况。我们的分析揭示了物种生活史策略的可塑性，并警告在预测物种对（气候）变化、扰动和（过度）开发的反应时，不要将生活史策略框架从一种环境外推到另一种环境。

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来源期刊

Ecology Letters 环境科学-生态学

CiteScore

17.60

自引率

3.40%

发文量

201

审稿时长

1.8 months

期刊介绍： Ecology Letters serves as a platform for the rapid publication of innovative research in ecology. It considers manuscripts across all taxa, biomes, and geographic regions, prioritizing papers that investigate clearly stated hypotheses. The journal publishes concise papers of high originality and general interest, contributing to new developments in ecology. Purely descriptive papers and those that only confirm or extend previous results are discouraged.