The evolution of traits affecting resource acquisition and predator vulnerability: character displacement under real and apparent competition

The American Naturalist
Peter A Abrams, Xin Chen

Abstract

This article investigates some simple models of the evolutionary interaction between two prey species that share a common resource and a common predator. Each prey species is characterized by a trait that determines both the rate of resource capture and vulnerability to a predator. In a simple model of a three-species food chain, such traits usually increase in response to an imposed reduction in resource density. When the per capita growth rates of each of two prey species depend linearly on resource density, such traits will change in opposite directions when the two prey come into sympatry. In addition, the ratio of the effect of the predator on prey fitness to the effect of the resource on prey fitness will diverge from the corresponding ratio in a second prey species when those species coexist in sympatry. These simple predictions need not hold under several alternative assumptions, which may be more common in biological systems. Parallel changes in sympatry may occur if the relationship between resource consumption and prey growth is nonlinear, if the prey species have partial overlap in the set of resources used or in the set of predators that consume them, or if prey experience direct intraspecific competition. The resp...Continue Reading

References

Jul 8, 2000·Trends in Ecology & Evolution·P A Abrams, L R Ginzburg
May 25, 2002·Proceedings. Biological Sciences·Steven M Vamosi, Dolph Schluter

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Citations

Mar 1, 2012·Proceedings of the National Academy of Sciences of the United States of America·Julie A Meachen, Joshua X Samuels
Dec 8, 2005·Annual Review of Entomology·F J Frank van VeenH Charles J Godfray
Nov 2, 2006·PLoS Biology·Scott D PeacorMercedes Pascual
Nov 25, 2003·Proceedings of the National Academy of Sciences of the United States of America·Howard D RundleDolph Schluter
May 4, 2004·The American Naturalist·Martijn EgasMaurice W Sabelis
May 5, 2006·The American Naturalist·Peter Eklöv, Richard Svanbäck
Nov 10, 2015·Evolution; International Journal of Organic Evolution·Peter A Abrams, Michael H Cortez
Sep 13, 2011·Ecology·Sebastian J SchreiberDaniel I Bolnick
Oct 4, 2015·Journal of Theoretical Biology·Jian ZuJianqiang Du
Apr 29, 2005·Evolution; International Journal of Organic Evolution·Peter B Marko
Nov 27, 2008·Journal of Evolutionary Biology·A D MorganA Buckling
Aug 24, 2007·Journal of Evolutionary Biology·A Buckling, D J Hodgson
Oct 12, 2007·Evolution; International Journal of Organic Evolution·Marjorie D Matocq, Peter J Murphy
Jan 28, 2009·Journal of Evolutionary Biology·P Escobar-PáramoM E Hochberg
Nov 2, 2014·Ecology and Evolution·Tina AstorJan Bengtsson
Jan 1, 2014·Journal of Evolutionary Biology·V-P FrimanA Buckling
Jul 1, 2004·Theoretical Population Biology·Chad E Brassil, Peter A Abrams
Feb 7, 2006·Journal of Theoretical Biology·Akihiko Mougi, Kinya Nishimura
Jul 28, 2006·Ecology·Mathew A Leibold, Mark A McPeek
Mar 9, 2004·Proceedings. Biological Sciences·Michael A BrockhurstAngus Buckling
Sep 27, 2019·The Journal of Animal Ecology·Cara A Faillace, Peter J Morin

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