Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.

Trichodina murmanica Polyanskiy, 1955 (= Trichodina domerguei subsp. saintjohnsi Lom and Laird, 1969) and Trichodina cooperi n.sp. were commonly encountered on skin and fins of Atlantic cod, Gadus morhua L., near Halifax, Nova Scotia, Canada. A third species of Trichodina, probably new, was recorded...

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Published in:Canadian Journal of Zoology
Main Authors: Poynton, S. L., Lom, J.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1989
Subjects:
Online Access:http://dx.doi.org/10.1139/z89-256
http://www.nrcresearchpress.com/doi/pdf/10.1139/z89-256
id crcansciencepubl:10.1139/z89-256
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spelling crcansciencepubl:10.1139/z89-256 2024-06-23T07:51:04+00:00 Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp. Poynton, S. L. Lom, J. 1989 http://dx.doi.org/10.1139/z89-256 http://www.nrcresearchpress.com/doi/pdf/10.1139/z89-256 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 67, issue 7, page 1793-1800 ISSN 0008-4301 1480-3283 journal-article 1989 crcansciencepubl https://doi.org/10.1139/z89-256 2024-05-24T13:05:54Z Trichodina murmanica Polyanskiy, 1955 (= Trichodina domerguei subsp. saintjohnsi Lom and Laird, 1969) and Trichodina cooperi n.sp. were commonly encountered on skin and fins of Atlantic cod, Gadus morhua L., near Halifax, Nova Scotia, Canada. A third species of Trichodina, probably new, was recorded from the skin of one fish. This is believed to be the first report of the genus Trichodina from the body surface of gadoid fish from eastern Canada, and the known geographic range of T. murmanica is extended. Trichodina cooperi n.sp. has an adoral ciliary spiral of 370–380° and is relatively large, the mean diameter of the body is 110 μm, of the adhesive disc (with dark center), 95 μm, and of the denticulate ring, 59 μm. The denticulate ring consists of 24–29 denticles (usually 27), with 7–9 radial pins per denticle. Each denticle has a broad blade, a large central part, and a slightly curved thorn of moderate to broad width, with a central rib when mature. The thorn is approximately twice the length of the blade. The horseshoe-shaped macronucleus has a diameter of 80.0 μm and the micronucleus is in the +y position. Trichodina spp. infected 26% of 39 wild fish 20 to < 60 cm long. Most wild fish yielded less than five ciliates per 24 × 50 mm smear. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing Canada Laird ENVELOPE(162.450,162.450,-81.683,-81.683) The ''Y'' ENVELOPE(-112.453,-112.453,57.591,57.591) Canadian Journal of Zoology 67 7 1793 1800
institution Open Polar
collection Canadian Science Publishing
op_collection_id crcansciencepubl
language English
description Trichodina murmanica Polyanskiy, 1955 (= Trichodina domerguei subsp. saintjohnsi Lom and Laird, 1969) and Trichodina cooperi n.sp. were commonly encountered on skin and fins of Atlantic cod, Gadus morhua L., near Halifax, Nova Scotia, Canada. A third species of Trichodina, probably new, was recorded from the skin of one fish. This is believed to be the first report of the genus Trichodina from the body surface of gadoid fish from eastern Canada, and the known geographic range of T. murmanica is extended. Trichodina cooperi n.sp. has an adoral ciliary spiral of 370–380° and is relatively large, the mean diameter of the body is 110 μm, of the adhesive disc (with dark center), 95 μm, and of the denticulate ring, 59 μm. The denticulate ring consists of 24–29 denticles (usually 27), with 7–9 radial pins per denticle. Each denticle has a broad blade, a large central part, and a slightly curved thorn of moderate to broad width, with a central rib when mature. The thorn is approximately twice the length of the blade. The horseshoe-shaped macronucleus has a diameter of 80.0 μm and the micronucleus is in the +y position. Trichodina spp. infected 26% of 39 wild fish 20 to < 60 cm long. Most wild fish yielded less than five ciliates per 24 × 50 mm smear.
format Article in Journal/Newspaper
author Poynton, S. L.
Lom, J.
spellingShingle Poynton, S. L.
Lom, J.
Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.
author_facet Poynton, S. L.
Lom, J.
author_sort Poynton, S. L.
title Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.
title_short Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.
title_full Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.
title_fullStr Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.
title_full_unstemmed Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.
title_sort some ectoparasitic trichodinids from atlantic cod, gadus morhua l., with a description of trichodina cooperi n.sp.
publisher Canadian Science Publishing
publishDate 1989
url http://dx.doi.org/10.1139/z89-256
http://www.nrcresearchpress.com/doi/pdf/10.1139/z89-256
long_lat ENVELOPE(162.450,162.450,-81.683,-81.683)
ENVELOPE(-112.453,-112.453,57.591,57.591)
geographic Canada
Laird
The ''Y''
geographic_facet Canada
Laird
The ''Y''
genre atlantic cod
Gadus morhua
genre_facet atlantic cod
Gadus morhua
op_source Canadian Journal of Zoology
volume 67, issue 7, page 1793-1800
ISSN 0008-4301 1480-3283
op_rights http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining
op_doi https://doi.org/10.1139/z89-256
container_title Canadian Journal of Zoology
container_volume 67
container_issue 7
container_start_page 1793
op_container_end_page 1800
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