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

Learn More →

Some Notes On Steinella Uncinata (Ciliata Astomida, Haptophryidae), a Parasite of Marine Triclads

Some Notes On Steinella Uncinata (Ciliata Astomida, Haptophryidae), a Parasite of Marine Triclads SOME NOTES ON STEINELLA UNCINATA (CILIATA ASTOMIDA, HAPTOPHRYIDAE), A PARASITE OF MARINE TRICLADS by G. VAN DER VELDE (Laboratory of Aquatic Ecology, Catholic University of Nijmegen, The Netherlands) INTRODUCTION When I squashed specimens of the marine triclad Uteriporus vulgaris Bergendal, 1890*, I discovered some holotrichous ciliates obviously belonging to the astome family Haptophryidae. The species of this family are endoparasites in the digestive tract of amphibians, terrestrial molluscs and triclad flatworms. They are characterized by a long con- tractile vacuole, a distinct headlike anterior end with a sucker (thigmo- tactic organ), an oval to elongate macronucleus, the absence of a mouth, and, unequal binary fission with or without chain-formation (CORLISS et al., 1965). The animals had hooks on the sucker, which are characteristic of the subfamily Lachmanellinae. As there were only two hooks of unequal size, I ascribed my specimens to the genus Steinella. Up to now only one species has been described in this genus, viz., Steinella uncinata (SCHULTZE, 1851). The publication of SIKORA (1963) gives much in- formation on this species. ' MATERIAL STUDIED ' .. Steinella was studied from samples of Uteriporls from salt-marshes on R6m6 (Denmark), 13-X-1974, and from the salt-marshes De Eendracht and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Netherlands Journal of Zoology (in 2003 continued as Animal Biology) Brill

Some Notes On Steinella Uncinata (Ciliata Astomida, Haptophryidae), a Parasite of Marine Triclads

Download PDF
6 pages

Loading next page...
 
/lp/brill/some-notes-on-steinella-uncinata-ciliata-astomida-haptophryidae-a-6OXgYZK0Gw

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
© 1974 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2960
eISSN
1568-542X
DOI
10.1163/002829675X00254
Publisher site
See Article on Publisher Site

Abstract

SOME NOTES ON STEINELLA UNCINATA (CILIATA ASTOMIDA, HAPTOPHRYIDAE), A PARASITE OF MARINE TRICLADS by G. VAN DER VELDE (Laboratory of Aquatic Ecology, Catholic University of Nijmegen, The Netherlands) INTRODUCTION When I squashed specimens of the marine triclad Uteriporus vulgaris Bergendal, 1890*, I discovered some holotrichous ciliates obviously belonging to the astome family Haptophryidae. The species of this family are endoparasites in the digestive tract of amphibians, terrestrial molluscs and triclad flatworms. They are characterized by a long con- tractile vacuole, a distinct headlike anterior end with a sucker (thigmo- tactic organ), an oval to elongate macronucleus, the absence of a mouth, and, unequal binary fission with or without chain-formation (CORLISS et al., 1965). The animals had hooks on the sucker, which are characteristic of the subfamily Lachmanellinae. As there were only two hooks of unequal size, I ascribed my specimens to the genus Steinella. Up to now only one species has been described in this genus, viz., Steinella uncinata (SCHULTZE, 1851). The publication of SIKORA (1963) gives much in- formation on this species. ' MATERIAL STUDIED ' .. Steinella was studied from samples of Uteriporls from salt-marshes on R6m6 (Denmark), 13-X-1974, and from the salt-marshes De Eendracht and

Journal

Netherlands Journal of Zoology (in 2003 continued as Animal Biology) – Brill

Published: Jan 1, 1974

There are no references for this article.