On the evolution of trophic position,Ecology Letters

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On the evolution of trophic position
Ecology Letters ( IF 7.6 ) Pub Date : 2021-09-22 , DOI: 10.1111/ele.13888
Marvin Moosmann _{1,

2} , Maria Cuenca-Cambronero _{1,

2} , Stephen De Lisle ₃ , Ryan Greenway ₁ , Cameron M Hudson _{1,

2} , Moritz D Lürig ₃ , Blake Matthews ₁

Affiliation

The trophic structure of food webs is primarily determined by the variation in trophic position among species and individuals. Temporal dynamics of food web structure are central to our understanding of energy and nutrient fluxes in changing environments, but little is known about how evolutionary processes shape trophic position variation in natural populations. We propose that trophic position, whose expression depends on both environmental and genetic determinants of the diet variation in individual consumers, is a quantitative trait that can evolve via natural selection. Such evolution can occur either when trophic position is correlated with other heritable morphological and behavioural traits under selection, or when trophic position is a target of selection, which is possible if the fitness effects of prey items are heterogeneously distributed along food chains. Recognising trophic position as an evolving trait, whose expression depends on the food web context, provides an important conceptual link between behavioural foraging theory and food web dynamics, and a useful starting point for the integration of ecological and evolutionary studies of trophic position.

中文翻译：

论营养位置的演变

食物网的营养结构主要取决于物种和个体之间营养位置的变化。食物网结构的时间动态对于我们理解不断变化的环境中的能量和营养通量至关重要，但对于进化过程如何影响自然种群的营养位置变化知之甚少。我们提出，营养位置的表达取决于个体消费者饮食变化的环境和遗传决定因素，是一种可以通过自然选择进化的数量性状。当营养位置与选择下的其他可遗传形态和行为特征相关时，或者当营养位置是选择目标时，就会发生这种进化，如果猎物的适应度效应沿着食物链异质分布，这是可能的。认识到营养位置是一种进化特征，其表达取决于食物网背景，为行为觅食理论和食物网动力学之间提供了重要的概念联系，并为营养位置的生态学和进化研究的整合提供了一个有用的起点。

更新日期：2021-11-11

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