Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

The Relation Between Stylet and Body Length in Aphelenchus Avenae With Observations On Paratylenchus Nanus

The Relation Between Stylet and Body Length in Aphelenchus Avenae With Observations On... THE RELATION BETWEEN STYLET AND BODY LENGTH IN APHELENCHUS AVENAE WITH OBSERVATIONS ON PARATYLENCHUS NANUS BY J. M. FISHER 1) Rothamsted Experimental Station, Harpenden, Herts., England The body length and breadth of adult Aphelenchus avenae increased or decreased with food supply but stylet length remained unchanged. Correlations between stylet and body length were slight except in newly-moulted specimens and depended on the extent to which body length had changed after moulting. Initial body length of adults depended partly on the duration of feeding in the fourth-stage larvae. Correlations between body length and breadth were greater and varied less with changes in size of the body than did correlations between stylet length and body length (or breadth). In Paratylenchus nanus, the relation between stylet and body length in adult females was similar to that in Aphelenchus avenae so that there was little dependence of stylet length on body length. Therefore any classification of Paratylenchus, which relies on stylet length and body length being correlated would be unsatisfactory as it is partly based on invalid criteria. Recently taxonomists have used mathematical relations increasingly to decrease variation in the characters used to separate species and have searched for new relations that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

The Relation Between Stylet and Body Length in Aphelenchus Avenae With Observations On Paratylenchus Nanus

Fisher, J.M.
Nematologica , Volume 15 (3): 8 – Jan 1, 1969
Download PDF
8 pages

Loading next page...
 
/lp/brill/the-relation-between-stylet-and-body-length-in-aphelenchus-avenae-with-XQkDDJ3FVn

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529269X00416
Publisher site
See Article on Publisher Site

Abstract

THE RELATION BETWEEN STYLET AND BODY LENGTH IN APHELENCHUS AVENAE WITH OBSERVATIONS ON PARATYLENCHUS NANUS BY J. M. FISHER 1) Rothamsted Experimental Station, Harpenden, Herts., England The body length and breadth of adult Aphelenchus avenae increased or decreased with food supply but stylet length remained unchanged. Correlations between stylet and body length were slight except in newly-moulted specimens and depended on the extent to which body length had changed after moulting. Initial body length of adults depended partly on the duration of feeding in the fourth-stage larvae. Correlations between body length and breadth were greater and varied less with changes in size of the body than did correlations between stylet length and body length (or breadth). In Paratylenchus nanus, the relation between stylet and body length in adult females was similar to that in Aphelenchus avenae so that there was little dependence of stylet length on body length. Therefore any classification of Paratylenchus, which relies on stylet length and body length being correlated would be unsatisfactory as it is partly based on invalid criteria. Recently taxonomists have used mathematical relations increasingly to decrease variation in the characters used to separate species and have searched for new relations that

Journal

Nematologica – Brill

Published: Jan 1, 1969

There are no references for this article.