Skip to main content
Article
Disparate Rates of Molecular Evolution in Cospeciating Hosts and Parasites
Science
  • M. S. Hafner, Museum of Natural Science: Baton Rouge, LA
  • P. D. Sudman, Museum of Natural Science: Baton Rouge, LA
  • F. X. Villablanca, Museum of Natural Science: Baton Rouge, LA
  • T. A. Spradling, Museum of Natural Science: Baton Rouge, LA
  • J. W. Demastes, Museum of Natural Science: Baton Rouge, LA
  • S. A. Nadler, Museum of Natural Science: Baton Rouge, LA
Publication Date
8-1-1994
Abstract

DNA sequences for the gene encoding mitochondrial cytochrome oxidase I in a group of rodents (pocket gophers) and their ectoparasites (chewing lice) provide evidence for cospeciation and reveal different rates of molecular evolution in the hosts and their parasites. The overall rate of nucleotide substitution (both silent and replacement changes) is approximately three times higher in lice, and the rate of synonymous substitution (based on analysis of fourfold degenerate sites) is approximately an order of magnitude greater in lice. The difference in synonymous substitution rate between lice and gophers correlates with a difference of similar magnitude in generation times.

Disciplines
Publisher statement
This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution.
Citation Information
M. S. Hafner, P. D. Sudman, F. X. Villablanca, T. A. Spradling, et al.. "Disparate Rates of Molecular Evolution in Cospeciating Hosts and Parasites" Science Vol. 265 Iss. 5175 (1994) p. 1087 - 1090
Available at: http://works.bepress.com/fvillabl/4/