Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada
Atlantic cod (Gadus morhua) were collected from six locations on the continental shelf off Newfoundland, Canada, including one inshore area and examined for parasites from 1981 to 1983. The protozoan Loma branchialis was more prevalent in North Atlantic Fisheries Organization (NAFO) areas 3Pn-4R (Gu...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1995
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Online Access: | http://dx.doi.org/10.1139/f95-527 http://www.nrcresearchpress.com/doi/pdf/10.1139/f95-527 |
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crcansciencepubl:10.1139/f95-527 2024-05-12T08:00:55+00:00 Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada Khan, R.A. Tuck, C. 1995 http://dx.doi.org/10.1139/f95-527 http://www.nrcresearchpress.com/doi/pdf/10.1139/f95-527 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 52, issue S1, page 195-201 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1995 crcansciencepubl https://doi.org/10.1139/f95-527 2024-04-18T06:54:50Z Atlantic cod (Gadus morhua) were collected from six locations on the continental shelf off Newfoundland, Canada, including one inshore area and examined for parasites from 1981 to 1983. The protozoan Loma branchialis was more prevalent in North Atlantic Fisheries Organization (NAFO) areas 3Pn-4R (Gulf of St. Lawrence) and 2J-3K (Labrador), whereas the acanthocephalan Echinorhynchus gadi was more abundant in the latter than in other locations. Similarly, the prevalence and (or) abundance of the fillet-inhabiting larval nematode Pseudoterranova decipiens and the blood-feeding copepod Lernaeocera branchialis were significantly greater in fish from 3Ps (St. Pierre Bank) and 3Pn-4R than from all adjacent areas. Gastrointestinal ascaridoid nematodes were more abundant in 3M (Flemish Cap) cod than in other localities. No differences in the prevalence and abundance of E. gadi were detected in samples in relation to sex or size class. Paired comparisons of transformed data for the different parasite taxa revealed that there were more significant differences than similarities in cod sampled from adjacent NAFO divisions. These observations based on selected parasites (Loma branchialis, Trypanosoma murmanensis, Myxidium gadi, P. decipiens, gastrointestinal ascaridoid nematodes, E. gadi, and Lernaeocera branchialis) support the view that discrete stocks of cod inhabit the Newfoundland–Labrador continental shelf. Article in Journal/Newspaper atlantic cod Gadus morhua Newfoundland North Atlantic Canadian Science Publishing Canada Loma ENVELOPE(-58.983,-58.983,-62.267,-62.267) Newfoundland Canadian Journal of Fisheries and Aquatic Sciences 52 S1 195 201 |
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Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Khan, R.A. Tuck, C. Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Atlantic cod (Gadus morhua) were collected from six locations on the continental shelf off Newfoundland, Canada, including one inshore area and examined for parasites from 1981 to 1983. The protozoan Loma branchialis was more prevalent in North Atlantic Fisheries Organization (NAFO) areas 3Pn-4R (Gulf of St. Lawrence) and 2J-3K (Labrador), whereas the acanthocephalan Echinorhynchus gadi was more abundant in the latter than in other locations. Similarly, the prevalence and (or) abundance of the fillet-inhabiting larval nematode Pseudoterranova decipiens and the blood-feeding copepod Lernaeocera branchialis were significantly greater in fish from 3Ps (St. Pierre Bank) and 3Pn-4R than from all adjacent areas. Gastrointestinal ascaridoid nematodes were more abundant in 3M (Flemish Cap) cod than in other localities. No differences in the prevalence and abundance of E. gadi were detected in samples in relation to sex or size class. Paired comparisons of transformed data for the different parasite taxa revealed that there were more significant differences than similarities in cod sampled from adjacent NAFO divisions. These observations based on selected parasites (Loma branchialis, Trypanosoma murmanensis, Myxidium gadi, P. decipiens, gastrointestinal ascaridoid nematodes, E. gadi, and Lernaeocera branchialis) support the view that discrete stocks of cod inhabit the Newfoundland–Labrador continental shelf. |
format |
Article in Journal/Newspaper |
author |
Khan, R.A. Tuck, C. |
author_facet |
Khan, R.A. Tuck, C. |
author_sort |
Khan, R.A. |
title |
Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada |
title_short |
Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada |
title_full |
Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada |
title_fullStr |
Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada |
title_full_unstemmed |
Parasites as biological indicators of stocks of Atlantic cod ( Gadus morhua ) off Newfoundland, Canada |
title_sort |
parasites as biological indicators of stocks of atlantic cod ( gadus morhua ) off newfoundland, canada |
publisher |
Canadian Science Publishing |
publishDate |
1995 |
url |
http://dx.doi.org/10.1139/f95-527 http://www.nrcresearchpress.com/doi/pdf/10.1139/f95-527 |
long_lat |
ENVELOPE(-58.983,-58.983,-62.267,-62.267) |
geographic |
Canada Loma Newfoundland |
geographic_facet |
Canada Loma Newfoundland |
genre |
atlantic cod Gadus morhua Newfoundland North Atlantic |
genre_facet |
atlantic cod Gadus morhua Newfoundland North Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 52, issue S1, page 195-201 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f95-527 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
52 |
container_issue |
S1 |
container_start_page |
195 |
op_container_end_page |
201 |
_version_ |
1798842984599388160 |