Competition asymmetry with taxon divergence

Proceedings. Biological Sciences
David K A Barnes

Abstract

Most organisms experience competition for resources, probably most of the time. As the structure and requirements of closely related species are generally liable to be more similar than in distantly linked species, Darwin suggested that the potential for competition was greater in the former. Since that time, studies have concentrated on interactions of either conspecifics or congeneric species. Shared critical resources, which organisms compete for, are generally mates, food and space (for access to the former). Whilst mates are valued only within species, in that the definition of a species requires it so, both food and space have the potential to be shared by very different organisms. It is now clear that vertebrates may compete with remotely related species: e.g. with squid for krill and with insects for nectar or seeds. Diamond suggested that (i) mutual aggression, (ii) displacement and (iii) evolutionary change in morphology would be increasingly asymmetric with competitor dissimilarity. Thus, with increasing taxonomic distance between two competitors (A and B), increasing aggression is exhibited between them and, increasingly, one consistently displaces the other. Here, Darwin's suggestion and Diamond's first two theorie...Continue Reading

References

Oct 25, 2002·Proceedings. Biological Sciences·David K A Barnes
Jul 20, 1979·Science·R M MayR M Laws
Nov 1, 1990·Trends in Ecology & Evolution·M E Hochberg, J H Lawton
Jan 1, 1982·Oecologia·James F Quinn

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Citations

Apr 26, 2013·Biology Letters·Isabel C BarrioC Guillermo Bueno
Mar 28, 2009·Ecology·Dustin J Marshall, Michael J Keough
Nov 26, 2004·Evolution; International Journal of Organic Evolution·S T Williams, D G Reid
Apr 27, 2016·Current Biology : CB·D K A Barnes, A M Neutel
Apr 26, 2006·Expert Opinion on Investigational Drugs·Priscilla BiswasGiuseppe Tambussi
Mar 3, 2018·Trends in Ecology & Evolution·Taylor M WilcoxWinsor H Lowe

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