TABLE CONTENTS

SESSION FORTY-THREE – MARINE AND FRESH WATER
NEMATODES
CONVENORS: JULIA ZOGRAF & ZHI NAN ZHANG
Some Genera and Species of the Enoplids (Enoplida: Thoracostomopsinae)
from the Sea of Okhotsk and the Sea of Japan
Fadeeva, N.P. (1) & J.K. Zograf (2)
(1) Department of Ecology, Faculty of Ecology,Biology and Biotechnology, Far Eastern State University,
Vladivostok, 690600, Russia; (2) A.V. Zhirmunsky Institute of Marine Biology FEB RAS, Vladivostok,
690041, Russia
The subfamily Thoracostomopsinae is a diverse group of large nematodes - predators that
feed on different invertebrates. Many species of the thoracostomopsids discovered in the last
centuries were improperly described. This report deals with the comparative anatomy of the
head and male reproductive system of the marine Thoracostomopsinae based on a collection
of free-living marine nematodes of the East of the Sea of Japan and the Sea of Ochotsk of
Russia. Detailed description of ten species belonging to genera Oxyonchus, Enoplolaimus,
Mesacanthion, Epacanthion, Enoploides, and Paramesacanthion is given. Seven out ten
species are named as new. Careful examination using methods of confocal (CM), light (LM),
and scanning electron microscopy (SEM) allowed us to uncover a number of morphological
characters to which little attention has been paid by former researchers. The usage of methods
of CM and SEM also permitted us to revise the phylogenetic significance of some
morphological features including labial region and stoma as well the structure of male
copulatory apparatus.
5 th International Congress of Nematology, 2008 158