Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905)
Odhner's specimens of Gymnophallus somateriae were studied and are assigned to a new genus and new species because of the wide genital pore located between the ventral sucker and the intestinal bifurcation. Paragymnophallus odhneri also differs from G. somateriae as described by Levinsen (1881)...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1973
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Online Access: | http://dx.doi.org/10.1139/z73-120 http://www.nrcresearchpress.com/doi/pdf/10.1139/z73-120 |
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crcansciencepubl:10.1139/z73-120 2023-12-17T10:50:02+01:00 Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) Ching, Hilda Lei 1973 http://dx.doi.org/10.1139/z73-120 http://www.nrcresearchpress.com/doi/pdf/10.1139/z73-120 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 51, issue 8, page 807-810 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1973 crcansciencepubl https://doi.org/10.1139/z73-120 2023-11-19T13:38:53Z Odhner's specimens of Gymnophallus somateriae were studied and are assigned to a new genus and new species because of the wide genital pore located between the ventral sucker and the intestinal bifurcation. Paragymnophallus odhneri also differs from G. somateriae as described by Levinsen (1881) and Ching (1973), in the body spination, 2:1 sucker ratio, nature of the vitellaria, and the egg size. G. somateriae reported by Ryzhikov et al. (1966) from Somateria spectabilis in Chutkova is considered to be P. odhneri because of the checkerboard arrangement of spines, 2:1 sucker ratio, and small eggs. Pending reexamination of the genital pore, G. bilis Brinkmann, 1956 and G. minor Ryzhikov, 1962 could belong to Paragymnophallus. The new genus, most similar to Gymnophallus in the bipartite seminal vesicle, follicular vitelline glands, and Y-shaped excretory bladder, differs in the location and size of the genital pore, larger sucker ratio, and large pharynx. The wide genital pore some distance from the ventral sucker and the large oral sucker are like that of Parvatrema but Parvatrema has a club-shaped seminal vesicle, minute body, compact vitellaria, and V-shaped excretory bladder. A key to the genera of Gymnophallidae is included. Article in Journal/Newspaper Somateria spectabilis Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 51 8 807 810 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Ching, Hilda Lei Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Odhner's specimens of Gymnophallus somateriae were studied and are assigned to a new genus and new species because of the wide genital pore located between the ventral sucker and the intestinal bifurcation. Paragymnophallus odhneri also differs from G. somateriae as described by Levinsen (1881) and Ching (1973), in the body spination, 2:1 sucker ratio, nature of the vitellaria, and the egg size. G. somateriae reported by Ryzhikov et al. (1966) from Somateria spectabilis in Chutkova is considered to be P. odhneri because of the checkerboard arrangement of spines, 2:1 sucker ratio, and small eggs. Pending reexamination of the genital pore, G. bilis Brinkmann, 1956 and G. minor Ryzhikov, 1962 could belong to Paragymnophallus. The new genus, most similar to Gymnophallus in the bipartite seminal vesicle, follicular vitelline glands, and Y-shaped excretory bladder, differs in the location and size of the genital pore, larger sucker ratio, and large pharynx. The wide genital pore some distance from the ventral sucker and the large oral sucker are like that of Parvatrema but Parvatrema has a club-shaped seminal vesicle, minute body, compact vitellaria, and V-shaped excretory bladder. A key to the genera of Gymnophallidae is included. |
format |
Article in Journal/Newspaper |
author |
Ching, Hilda Lei |
author_facet |
Ching, Hilda Lei |
author_sort |
Ching, Hilda Lei |
title |
Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) |
title_short |
Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) |
title_full |
Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) |
title_fullStr |
Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) |
title_full_unstemmed |
Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905) |
title_sort |
paragymnophallus odhneri gen. n., sp. n. (trematoda: gymnophallidae) for gymnophallus somateriae sensu odhner (1900, 1905) |
publisher |
Canadian Science Publishing |
publishDate |
1973 |
url |
http://dx.doi.org/10.1139/z73-120 http://www.nrcresearchpress.com/doi/pdf/10.1139/z73-120 |
genre |
Somateria spectabilis |
genre_facet |
Somateria spectabilis |
op_source |
Canadian Journal of Zoology volume 51, issue 8, page 807-810 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z73-120 |
container_title |
Canadian Journal of Zoology |
container_volume |
51 |
container_issue |
8 |
container_start_page |
807 |
op_container_end_page |
810 |
_version_ |
1785574676832976896 |