Examination of hemiplasy, homoplasy and phylogenetic discordance in chromosomal evolution of the Bovidae

Article


Robinson, T. and Ropiquet, A. 2011. Examination of hemiplasy, homoplasy and phylogenetic discordance in chromosomal evolution of the Bovidae. Systematic Biology. 60 (4), pp. 439-450. https://doi.org/10.1093/sysbio/syr045
TypeArticle
TitleExamination of hemiplasy, homoplasy and phylogenetic discordance in chromosomal evolution of the Bovidae
AuthorsRobinson, T. and Ropiquet, A.
Abstract

Robertsonian chromosomal fusions predominate in shaping the genomes of many species of Bovidae. These and other cytogenetic data (from 52 taxa representing 51 species and 9 tribes of Bovidae) were (i) examined for usefulness in defining phylogenetic relationships and (ii) subsequently mapped to a consensus tree based on mitochondrial and nuclear DNA gene sequences with divergence dates of the corresponding species calculated from cytochrome b sequences. This permitted persistence time estimates for the various rearrangements. The chromosomal data resulted in an unsupported higher-level topology, but with recognition of the monophyly of some genera and tribes within Bovidae. The distribution and temporal spread of character states on the species tree is suggestive of a restricted role for hemiplasy (the retention of an ancestral chromosomal polymorphism through multiple speciation events) and for introgression (resulting from secondary contact among taxa), processes that can potentially lead to phylogenetic discordance. We conclude that the most probable interpretation for these data is that genuine karyotypic homoplasy predominates, but that hemiplasy (and/or introgression) is a realistic hypothesis for the observed patterns of several shared characters in Bovidae.

Research GroupMolecular Biology group
PublisherOxford University Press (OUP)
JournalSystematic Biology
ISSN1063-5157
Electronic1076-836X
Publication dates
Online28 Apr 2011
PrintJul 2011
Publication process dates
Deposited28 Apr 2015
Accepted19 Jan 2011
Output statusPublished
Digital Object Identifier (DOI)https://doi.org/10.1093/sysbio/syr045
LanguageEnglish
Permalink -

https://repository.mdx.ac.uk/item/8526y

  • 30
    total views
  • 0
    total downloads
  • 0
    views this month
  • 0
    downloads this month

Export as