A statistical test for host-parasite coevolution |
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Authors: | Legendre Pierre Desdevises Yves Bazin Eric |
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Institution: | Département de sciences biologiques, Université de Montréal, C.P.6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7. Pierre.Legengre@umontreal.ca |
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Abstract: | A new method, ParaFit, has been developed to test the significance of a global hypothesis of coevolution between parasites and their hosts. Individual host-parasite association links can also be tested. The test statistics are functions of the host and parasite phylogenetic trees and of the set of host-parasite association links. Numerical simulations are used to show that the method has correct rate of type I error and good power except under extreme error conditions. An application to real data (pocket gophers and chewing lice) is presented. |
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