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Ultrastructure and Function of the Anterior Feeding Apparatus in Labronema Sp

Ultrastructure and Function of the Anterior Feeding Apparatus in Labronema Sp ULTRASTRUCTURE AND FUNCTION OF THE ANTERIOR FEEDING APPARATUS IN LABRONEMA SP. BY PATRICK GROOTAERT and URS WYSS Instituut voor Dierkunde, Rijksuniversiteit, Ledeganckstraat 35, Gent, Belgium & Institut für Pflanzenkrankheiten und Pflanzenschutz der Technischen Universität, D-3000 Hannover-Herrenhausen, B.R. Deutschland Structure and function of the anterior feeding apparatus of Labronema sp., predominantly a predatory nematode, were studied by electronmicroscopic and cinematographic analysis. The ultra- structure of the anterior feeding apparatus is basically similar to that of Aporcelaimellus spp. In Labronema sp. each of the eight protractor muscles sends projections towards the body wall where they form branches that partly penetrate the somatic musculature and the nerve chords. Only one set of 4 retractor muscles is present. Odontostyle retraction may be supported by membrane- like structures between the 'hydrostatic cylinder' and the body wall which become stretched as the odontostyle is protracted. Odontostyle protrusion is accompanied by a compression of the 'hydrostatic cylinder' which allows the smooth folding of the guiding sheath into an anterior loop. During the actual ingestion process the odontostyle is fully protruded, and strong suction is exerted whenever the oesophageal muscles contract. At the beginning of each ingestion pause some of the food drawn in was seen http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Ultrastructure and Function of the Anterior Feeding Apparatus in Labronema Sp

Grootaert, Patrick; Wyss, Urs
Nematologica , Volume 24 (3): 8 – Jan 1, 1978
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529278X00209
Publisher site
See Article on Publisher Site

Abstract

ULTRASTRUCTURE AND FUNCTION OF THE ANTERIOR FEEDING APPARATUS IN LABRONEMA SP. BY PATRICK GROOTAERT and URS WYSS Instituut voor Dierkunde, Rijksuniversiteit, Ledeganckstraat 35, Gent, Belgium & Institut für Pflanzenkrankheiten und Pflanzenschutz der Technischen Universität, D-3000 Hannover-Herrenhausen, B.R. Deutschland Structure and function of the anterior feeding apparatus of Labronema sp., predominantly a predatory nematode, were studied by electronmicroscopic and cinematographic analysis. The ultra- structure of the anterior feeding apparatus is basically similar to that of Aporcelaimellus spp. In Labronema sp. each of the eight protractor muscles sends projections towards the body wall where they form branches that partly penetrate the somatic musculature and the nerve chords. Only one set of 4 retractor muscles is present. Odontostyle retraction may be supported by membrane- like structures between the 'hydrostatic cylinder' and the body wall which become stretched as the odontostyle is protracted. Odontostyle protrusion is accompanied by a compression of the 'hydrostatic cylinder' which allows the smooth folding of the guiding sheath into an anterior loop. During the actual ingestion process the odontostyle is fully protruded, and strong suction is exerted whenever the oesophageal muscles contract. At the beginning of each ingestion pause some of the food drawn in was seen

Journal

Nematologica – Brill

Published: Jan 1, 1978

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