Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island
One hundred shorthorn sculpins, Myoxocephalus scorpius, over 15 cm in length captured from June to October, 1972, in Cumberland Sound, Baffin Island, fed almost exclusively (90% by both numbers and dry weight) on the planktonic amphipods Pseudalibrotus glacialis and Parathemisto libellula. In contra...
Published in: | Journal of the Fisheries Research Board of Canada |
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Canadian Science Publishing
1974
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Online Access: | http://dx.doi.org/10.1139/f74-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-059 |
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crcansciencepubl:10.1139/f74-059 2023-12-17T10:27:35+01:00 Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island Moore, I. A. Moore, J. W. 1974 http://dx.doi.org/10.1139/f74-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-059 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 31, issue 3, page 355-359 ISSN 0015-296X General Medicine journal-article 1974 crcansciencepubl https://doi.org/10.1139/f74-059 2023-11-19T13:38:27Z One hundred shorthorn sculpins, Myoxocephalus scorpius, over 15 cm in length captured from June to October, 1972, in Cumberland Sound, Baffin Island, fed almost exclusively (90% by both numbers and dry weight) on the planktonic amphipods Pseudalibrotus glacialis and Parathemisto libellula. In contrast, 140 fish captured about the same times from nearby Pangnirtung Fjord fed heavily on the benthic gastropods Littorina saxatilis and Margarites umbilicalis (each 34% by numbers and 22% by weight) and the bivalve Modiolaria discors (16% by both). Drifting ice on Cumberland Sound probably reduced the level of illumination making the detection of benthic prey difficult and causing the sculpins in this area to feed entirely on the better illuminated, brightly colored plankton. At both localities, the most abundant species in the plankton and the epifauna were also the most frequently encountered in gut contents. On the other hand, coelenterates, planktonic gastropods, copepods, and infauna, all of which were abundant in the environment, were rarely eaten. Article in Journal/Newspaper Baffin Island Baffin Cumberland Sound Copepods Canadian Science Publishing (via Crossref) Baffin Island Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Pangnirtung ENVELOPE(-65.707,-65.707,66.145,66.145) Journal of the Fisheries Research Board of Canada 31 3 355 359 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Moore, I. A. Moore, J. W. Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island |
topic_facet |
General Medicine |
description |
One hundred shorthorn sculpins, Myoxocephalus scorpius, over 15 cm in length captured from June to October, 1972, in Cumberland Sound, Baffin Island, fed almost exclusively (90% by both numbers and dry weight) on the planktonic amphipods Pseudalibrotus glacialis and Parathemisto libellula. In contrast, 140 fish captured about the same times from nearby Pangnirtung Fjord fed heavily on the benthic gastropods Littorina saxatilis and Margarites umbilicalis (each 34% by numbers and 22% by weight) and the bivalve Modiolaria discors (16% by both). Drifting ice on Cumberland Sound probably reduced the level of illumination making the detection of benthic prey difficult and causing the sculpins in this area to feed entirely on the better illuminated, brightly colored plankton. At both localities, the most abundant species in the plankton and the epifauna were also the most frequently encountered in gut contents. On the other hand, coelenterates, planktonic gastropods, copepods, and infauna, all of which were abundant in the environment, were rarely eaten. |
format |
Article in Journal/Newspaper |
author |
Moore, I. A. Moore, J. W. |
author_facet |
Moore, I. A. Moore, J. W. |
author_sort |
Moore, I. A. |
title |
Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island |
title_short |
Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island |
title_full |
Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island |
title_fullStr |
Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island |
title_full_unstemmed |
Food of Shorthorn Sculpin, Myoxocephalus scorpius , in the Cumberland Sound Area of Baffin Island |
title_sort |
food of shorthorn sculpin, myoxocephalus scorpius , in the cumberland sound area of baffin island |
publisher |
Canadian Science Publishing |
publishDate |
1974 |
url |
http://dx.doi.org/10.1139/f74-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-059 |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) ENVELOPE(-65.707,-65.707,66.145,66.145) |
geographic |
Baffin Island Cumberland Sound Pangnirtung |
geographic_facet |
Baffin Island Cumberland Sound Pangnirtung |
genre |
Baffin Island Baffin Cumberland Sound Copepods |
genre_facet |
Baffin Island Baffin Cumberland Sound Copepods |
op_source |
Journal of the Fisheries Research Board of Canada volume 31, issue 3, page 355-359 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f74-059 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
31 |
container_issue |
3 |
container_start_page |
355 |
op_container_end_page |
359 |
_version_ |
1785579474473975808 |