Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Differentiation of the Xiphinema americanum-group nematodes X. brevicollum, X. incognitum, X. diffusum and X. oxycaudatum in Taiwan by morphometrics and nuclear ribosomal DNA sequences

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Buy this article

$30.00+ Tax (if applicable)
Add to Favorites

For more content, see Nematologica.

Morphometrics and molecular variability of the X. americanum-group collected in Taiwan were studied. Morphometric data, derived from the females and their developing juveniles, revealed that the 27 populations comprised four taxa: X. brevicollum, X. incognitum, X. diffusum and X. oxycaudatum, the last species being found to have only three juvenile stages. Further identifications were conducted by analysing the nucleotide sequences of the first internal transcribed spacer (ITS-1), 5.8S gene and second internal transcribed spacer (ITS-2) of ribosomal DNA (rDNA). Pairwise comparisons revealed the sequence differences among these taxa ranging from 3.5 to 21.8% for the ITS-1, 2.9 to 28.6% for the ITS-2 and 0 to 3.1% for the 5.8S. Little or no intraspecific variation was detected in the four species for which multiple populations from different geographical regions or hosts were sequenced. Although X. incognitum is morphometrically closer to X. diffusum than it is to X. brevicollum in mean body length, total stylet length, and percentage position of vulva, there is a higher degree of genetic similarity between X. incognitum and X. brevicollum.


Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to email alerts
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Nematology — Recommend this title to your library

    Thank you

    Your recommendation has been sent to your librarian.

  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation