Jungles: a new solution to the host/parasite phylogeny reconciliation problem

Publication Type:Journal Article
Year of Publication:1998
Authors:M. A. Charleston
Journal:Mathematical biosciences
Pagination:191 - 223
Date Published:1998
ISBN Number:0025-5564
Keywords:animals, host parasite, Lice Infestations/parasitology/veterinary, Likelihood Functions, Mallophaga, Models, Biological, phylogeny, Rodent Diseases/parasitology, Rodentia/parasitology

The problem of finding least-cost reconstructions of past host/parasite associations, given the phylogenetic histories of a set of host taxa and of their associated parasites, is known to be complex. I provide in this article a new method of implicitly listing all the potentially optimal solutions to the problem, by considering each hypothesised past association individually, in a structure I have termed a Jungle. These structures are demonstrated to enable fast acquisition of globally optimal solutions under general weighting schemes, including minimisation of total number of postulated events and maximization of postulated cospeciation events. A simple example is given, and the pocket gopher/chewing louse system investigated by Hafner and Nadler [Hafner and Nadler, Nature 332 (1988) 258] is re-examined.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith