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New ultrastructural data from the larva of Paragordius varius (Nematomorpha)


Jochmann, Ralf; Schmidt-Rhaesa, A (2007). New ultrastructural data from the larva of Paragordius varius (Nematomorpha). Acta Zoologica, 88(2):137-144.

Abstract

Larvae of Paragordius varius (Leidy, 1851) were investigated using transmission electron microscopy, providing new observations concerning the cuticular structures of the preseptum, the postseptal gland and the pseudointestine. The cuticle is three-layered but the basal layer is variable in structure. The hooks possess long, intracuticular roots and the stylets have apical teeth. Both postseptal gland and pseudointestine are secretory in function. The postseptal gland is composed of eight cells, which are all connected by a duct leading through the septum into the preseptum. Inside the postseptal gland, the duct wall has numerous pores. The pseudointestine is composed of four cells surrounding a cavity with an amorphous content. A flattened duct within a syncytium with five nuclei leads to a ventral pore close to the posterior end.

Larvae of Paragordius varius (Leidy, 1851) were investigated using transmission electron microscopy, providing new observations concerning the cuticular structures of the preseptum, the postseptal gland and the pseudointestine. The cuticle is three-layered but the basal layer is variable in structure. The hooks possess long, intracuticular roots and the stylets have apical teeth. Both postseptal gland and pseudointestine are secretory in function. The postseptal gland is composed of eight cells, which are all connected by a duct leading through the septum into the preseptum. Inside the postseptal gland, the duct wall has numerous pores. The pseudointestine is composed of four cells surrounding a cavity with an amorphous content. A flattened duct within a syncytium with five nuclei leads to a ventral pore close to the posterior end.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:April 2007
Deposited On:24 Jul 2009 08:20
Last Modified:05 Apr 2016 13:18
Publisher:Wiley-Blackwell
ISSN:0001-7272
Additional Information:The definitive version is available at www.blackwell-synergy.com
Publisher DOI:10.1111/j.1463-6395.2007.00261.x
Official URL:http://www3.interscience.wiley.com/cgi-bin/fulltext/118480578/PDFSTART
Permanent URL: http://doi.org/10.5167/uzh-19750

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