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

Root-knot nematode perineal pattern development: a reconsideration

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.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Nematology
For more content, see Nematologica.

The perineal pattern, a unique and complex structure located at the female posterior body region, comprises the vulva-anus area, tail terminus, phasmids, lateral lines and surrounding cuticular striae. Little is known about the development of this important but variable character complex. Published information together with scanning electron and light microscopical observations on female development and perineal patterns were used to explain in detail the perineal pattern. The basic pattern, with fine striae, is formed just after the last moult when the vulva is induced above the anus at the posterior ventral body side. This process is likely to be influenced by the previous feeding stage. The vulva-anus region moves posteriorly, while the female is still enclosed by the old cuticle layers. After resuming feeding, the female diameter increases rapidly and pattern striae become folded and coarser. The role of the expanding rectal glands and perineal pattern structures as lateral lines, anus, tail terminus and punctations are discussed in detail. Major origins for pattern variation are developmental and aging factors in both feeding stages, a vulva-anus shift and the observation of patterns of different age, in combination with variable interpretation and description.

Affiliations: 1: Plant Protection Service, Nematology Section, P.O. Box 9102, 6700 HC Wageningen, The Netherlands; 2: Wageningen University, Laboratory of Plant Cell Biology, Arboretumlaan 4, 6703 BD Wageningen, The Netherlands


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • 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
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation