Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport
In the northwestern Gulf of St. Lawrence in spring 1987 and 1988, stage I and II northern shrimp (Pandalus borealis) larvae were concentrated in the upper (<30 m) layers above the permanent pycnocline and coincident with subsurface chlorophyll a and suspended particle concentration maxima; this w...
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1994
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Online Access: | http://dx.doi.org/10.1139/f94-014 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-014 |
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crcansciencepubl:10.1139/f94-014 2024-03-24T09:04:07+00:00 Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport Ouellet, Patrick Lefaivre, Denis 1994 http://dx.doi.org/10.1139/f94-014 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-014 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 51, issue 1, page 123-132 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1994 crcansciencepubl https://doi.org/10.1139/f94-014 2024-02-26T15:23:03Z In the northwestern Gulf of St. Lawrence in spring 1987 and 1988, stage I and II northern shrimp (Pandalus borealis) larvae were concentrated in the upper (<30 m) layers above the permanent pycnocline and coincident with subsurface chlorophyll a and suspended particle concentration maxima; this was above other macrozooplankton taxa in the daytime. Shrimp larvae maintained their vertical position relative to the maximum density gradient in the water column in daytime but moved towards the surface at night. Estimation of larval residual transport (~66 km) during the first developmental stage (12 d) corresponded to the horizontal scale of patches of stage I shrimp larvae in the northwest sector of the Gulf. The result is consistent with the suggestion of localized and short-duration larval emergence in the sector. The direction of mass transport and current speed were similar throughout the upper layers of the water column; consequently, the direction and magnitude of larval shrimp transport were not dependent on their vertical position. We suggest that the vertical distribution maintained by shrimp larvae is a mechanism to ensure maximum food availability and to optimize development time in the stratified water of the northwestern Gulf of St. Lawrence. Article in Journal/Newspaper northern shrimp Pandalus borealis Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 51 1 123 132 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Ouellet, Patrick Lefaivre, Denis Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
In the northwestern Gulf of St. Lawrence in spring 1987 and 1988, stage I and II northern shrimp (Pandalus borealis) larvae were concentrated in the upper (<30 m) layers above the permanent pycnocline and coincident with subsurface chlorophyll a and suspended particle concentration maxima; this was above other macrozooplankton taxa in the daytime. Shrimp larvae maintained their vertical position relative to the maximum density gradient in the water column in daytime but moved towards the surface at night. Estimation of larval residual transport (~66 km) during the first developmental stage (12 d) corresponded to the horizontal scale of patches of stage I shrimp larvae in the northwest sector of the Gulf. The result is consistent with the suggestion of localized and short-duration larval emergence in the sector. The direction of mass transport and current speed were similar throughout the upper layers of the water column; consequently, the direction and magnitude of larval shrimp transport were not dependent on their vertical position. We suggest that the vertical distribution maintained by shrimp larvae is a mechanism to ensure maximum food availability and to optimize development time in the stratified water of the northwestern Gulf of St. Lawrence. |
format |
Article in Journal/Newspaper |
author |
Ouellet, Patrick Lefaivre, Denis |
author_facet |
Ouellet, Patrick Lefaivre, Denis |
author_sort |
Ouellet, Patrick |
title |
Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport |
title_short |
Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport |
title_full |
Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport |
title_fullStr |
Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport |
title_full_unstemmed |
Vertical Distribution of Northern Shrimp ( Pandalus borealis ) Larvae in the Gulf of St Lawrence; Implications for Trophic Interactions and Transport |
title_sort |
vertical distribution of northern shrimp ( pandalus borealis ) larvae in the gulf of st lawrence; implications for trophic interactions and transport |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/f94-014 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-014 |
genre |
northern shrimp Pandalus borealis |
genre_facet |
northern shrimp Pandalus borealis |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 51, issue 1, page 123-132 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f94-014 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
51 |
container_issue |
1 |
container_start_page |
123 |
op_container_end_page |
132 |
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1794405180286959616 |