Genetic variation in the Heterodoxys octoseriatus group (Phthiraptera)

A test of price's model of parasite evolution

Stephen C. Barker*, David A. Briscoe, Robert L. Close, Peter Dallas

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Most of the genetic variation in the H. octoseriatus group is present as fixed gene differences between species which have been described on morphological criteria. Based on allozymes, the taxonomic status of some species was challenged. There was insufficient evidence, however, to demonstrate that these were not 'good' biological species. Overall, the limited intraspecific variation was present as fixed gene differences among lice from different hosts and from different colonies of hosts; heterozygotes were rare. Two predictions derived from Price's model of parasite evolution were met: populations of lice were genetically homogeneous and, where genetic markers were present, we found substantial genetic variation among populations. These data contrast with those for endoparasitic helminths, where, in general, the amount of genetic variation is similar to that of free-living invertebrates.

Original languageEnglish
Pages (from-to)555-563
Number of pages9
JournalInternational Journal for Parasitology
Volume21
Issue number5
DOIs
Publication statusPublished - 1991

Keywords

  • alleles
  • Allozyme electrophoresis
  • genetic variation
  • Heterodoxus octoseriatus group
  • heterozygosity
  • lice
  • parasite evolution
  • polymorphic loci
  • rock-wallabies

Fingerprint Dive into the research topics of 'Genetic variation in the <i>Heterodoxys octoseriatus</i> group (Phthiraptera): A test of price's model of parasite evolution'. Together they form a unique fingerprint.

  • Cite this