Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.13677 |
Density‐dependent natural selection mediates harvest‐induced trait changes | |
Alix Bouffet‐; Halle; Jacques Mé; riguet; David Carmignac; Simon Agostini; Alexis Millot; Samuel Perret; Eric Motard; Beatriz Decenciere; Eric Edeline | |
2021-01-28 | |
发表期刊 | Ecology Letters
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出版年 | 2021 |
英文摘要 | Rapid life‐history changes caused by size‐selective harvesting are often interpreted as a response to direct harvest selection against a large body size. However, similar trait changes may result from a harvest‐induced relaxation of natural selection for a large body size via density‐dependent selection. Here, we show evidence of such density‐dependent selection favouring large‐bodied individuals at high population densities, in replicated pond populations of medaka fish. Harvesting, in contrast, selected medaka directly against a large body size and, in parallel, decreased medaka population densities. Five years of harvesting were enough for harvested and unharvested medaka populations to inherit the classically predicted trait differences, whereby harvested medaka grew slower and matured earlier than unharvested medaka. We show that this life‐history divergence was not driven by direct harvest selection for a smaller body size in harvested populations, but by density‐dependent natural selection for a larger body size in unharvested populations. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/313880 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Alix Bouffet‐,Halle,Jacques Mé,等. Density‐dependent natural selection mediates harvest‐induced trait changes[J]. Ecology Letters,2021. |
APA | Alix Bouffet‐.,Halle.,Jacques Mé.,riguet.,David Carmignac.,...&Eric Edeline.(2021).Density‐dependent natural selection mediates harvest‐induced trait changes.Ecology Letters. |
MLA | Alix Bouffet‐,et al."Density‐dependent natural selection mediates harvest‐induced trait changes".Ecology Letters (2021). |
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