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Experimental and Applied Acarology

pp 1–12

First Online: 01 June 2017Received: 10 March 2017Accepted: 23 May 2017DOI: 10.1007-s10493-017-0142-x

Cite this article as: Fonseca, M.M., Montserrat, M., Guzmán, C. et al. Exp Appl Acarol 2017. doi:10.1007-s10493-017-0142-x

Abstract

Intraguild predation is the combination of exploitative competition and predation among potential competitors that use similar resources. It has the potential to shape population dynamics and community structure. Although there is much empirical evidence for the occurrence of intraguild predation in natural ecosystems, the study of its effects is mainly limited to short-term microcosm experiments. There is, therefore, certain skepticism about its actual significance in nature. A relevant concern is that there is no consensus regarding criteria to evaluate the possible occurrence of intraguild predation in short-term experiments, and methodological differences may therefore underlie apparent inconsistencies among studies. Our purpose here was to evaluate existing criteria to offer guidance for the design of experiments to determine whether two species may potentially engage in intraguild predation. The criteria are based on the condition that intraguild predators need to experience immediate energetic gains when feeding on the intraguild prey. Thus, a relevant experimental design must quantify predation but also fitness benefits of feeding on the other species, i.e. increases in reproduction, somatic growth, or survival.

KeywordsPredator–predator interactions Experimental design Population dynamics Food webs Evolution 



Autor: Morgana Maria Fonseca - Marta Montserrat - Celeste Guzmán - Inmaculada Torres-Campos - Angelo Pallini - Arne Janssen

Fuente: https://link.springer.com/







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