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Ultrastructure and Function of the Anterior Feeding Apparatus in Mononchus Aquaticus

Ultrastructure and Function of the Anterior Feeding Apparatus in Mononchus Aquaticus ULTRASTRUCTURE AND FUNCTION OF THE ANTERIOR FEEDING APPARATUS IN MONONCHUS AQUATICUS BY PATRICK GROOTAERT and URS WYSS Instituut voor Dierkunde, Rijksuniversiteit, Ledeganckstraat 35, B-9000 Gent, Belgium, and Institut für Pflanzenkrankheiten und Pflanzenschutz der Universität, D-3000 Hannover-Herrenhausen, B.R. Deutschland The structure and function of the anterior feeding apparatus of Mononchus aquaticus, a predatory nematode, were studied by electron microscopic and cinematographic analysis. The lip region is composed of cuticular material and bears two sets of outgrowths, the liplets, projecting into the vestibulum. The buccal capsule, described here as a functional unit, is composed of three sets of plates. Ontogenetically, however, the anterior oblique plates belong to the cheilostome. Two sets of eight modified somatic muscles, the labial and stomatal muscles, are present at the level of the buccal capsule. During attack on the prey the lip region is pulled backwards by contraction of the labial muscles, and the anterior part of the buccal capsule, thus brought into close contact with the prey's cuticle, is dilated. Simultaneously the oesophageal muscles contract, creating suction. During ingestion the posterior oblique plates of the buccal capsule are drawn backwards into a vertical position and the oesophageal lumen becomes fully dilated. The structure of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Ultrastructure and Function of the Anterior Feeding Apparatus in Mononchus Aquaticus

Grootaert, Patrick; Wyss, Urs
Nematologica , Volume 25 (2): 11 – Jan 1, 1979
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529279X00181
Publisher site
See Article on Publisher Site

Abstract

ULTRASTRUCTURE AND FUNCTION OF THE ANTERIOR FEEDING APPARATUS IN MONONCHUS AQUATICUS BY PATRICK GROOTAERT and URS WYSS Instituut voor Dierkunde, Rijksuniversiteit, Ledeganckstraat 35, B-9000 Gent, Belgium, and Institut für Pflanzenkrankheiten und Pflanzenschutz der Universität, D-3000 Hannover-Herrenhausen, B.R. Deutschland The structure and function of the anterior feeding apparatus of Mononchus aquaticus, a predatory nematode, were studied by electron microscopic and cinematographic analysis. The lip region is composed of cuticular material and bears two sets of outgrowths, the liplets, projecting into the vestibulum. The buccal capsule, described here as a functional unit, is composed of three sets of plates. Ontogenetically, however, the anterior oblique plates belong to the cheilostome. Two sets of eight modified somatic muscles, the labial and stomatal muscles, are present at the level of the buccal capsule. During attack on the prey the lip region is pulled backwards by contraction of the labial muscles, and the anterior part of the buccal capsule, thus brought into close contact with the prey's cuticle, is dilated. Simultaneously the oesophageal muscles contract, creating suction. During ingestion the posterior oblique plates of the buccal capsule are drawn backwards into a vertical position and the oesophageal lumen becomes fully dilated. The structure of

Journal

Nematologica – Brill

Published: Jan 1, 1979

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