The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

The 2017/18  impact factor of the Herpetological Journal is 1.268

  pdfBHS Ethics Policy

Download Access:

  • The latest 20 issues can be downloaded when logged in with a Herpetological Journal subscription membership.
  • Individual articles can be purchased for download.
  • Older issues and occasional Open Access articles are available for public download

pdf 04. On phylogenetic relationships within Dendrotriton (Amphibia: Caudata: Plethodontidae) is there sufficient evidence

157 downloads

Open Access

pp.55-65

Authors: Mark Wilkinson

Abstract: Previous phylogenetic analyses of the relationships among five Central American salamanders of the genus Dendrotriton are reviewed. The available data was reanalysed using parsimony under a variety of analytical treatments. The results are highly sensitive to (I) the coding method used to convert quantitative characters into discrete character states; (2) different scalings (weighting) of multistate characters; and (3) the omission or inclusion of potentially problematic characters. Explorations of length differences between most parsimonious trees and selected less parsimonious alternatives reveal that under each treatment, most parsimonious trees are only marginally more parsimonious than alternatives and that Bremer support for the clades occurring in MPTs is always low. Tree length distributions are not highly left-skewed as would be expected of phylogenetically informative data. These analyses suggest that there is little phylogenetic signal in the available data and that these data provide little basis for well supported phylogenetic inferences. Both parsimony and compatibility-based randomization tests confirm this interpretation. The null hypotheses that the data are not significantly different from phylogenetically uninformative randomly permuted data cannot be rejected for any of the analytical treatments. Given failure to reject the null hypothesis, phylogenetic hypotheses for Dendrotriton based on the available data are uncompelling. Additional data are needed. Results of the randomization tests are consistent with the view that there has been extensive homoplasy in bolitoglossine salamanders.

Submissions:

For further information and submission guidelines please see our Journal Instructions to Authors

 

 

NOTE: as of January 2017, all new editions of the HJ are ONLY available online via the BHS website. The BHS no longer has a commercial hosting agreement with Ingenta  -  although editions prior to end 2016 remain accessible on Ingenta .  Those editions are of course also accessible on the BHS website for subscribers with an active and valid membership.  Should you experience any difficulty accessing HJ editions via the website or have any queries in this regard, please contact