Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing?
Abstract During the 1990s, carapace length statistics including minimum size caught ( L min ), mean male and female lengths, size at sex transition ( L 50 ) and maximum size ( L max ) of northern shrimp ( Pandalus borealis ) decreased in commercial and survey catches off Newfoundland and Labrador. D...
Published in: | Fisheries Oceanography |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2006
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1365-2419.2006.00403.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2006.00403.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2006.00403.x |
id |
crwiley:10.1111/j.1365-2419.2006.00403.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1365-2419.2006.00403.x 2024-06-02T08:07:54+00:00 Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? KOELLER, P. A. FUENTES‐YACO, C. PLATT, T. 2006 http://dx.doi.org/10.1111/j.1365-2419.2006.00403.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2006.00403.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2006.00403.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 16, issue 2, page 105-115 ISSN 1054-6006 1365-2419 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-2419.2006.00403.x 2024-05-03T11:56:54Z Abstract During the 1990s, carapace length statistics including minimum size caught ( L min ), mean male and female lengths, size at sex transition ( L 50 ) and maximum size ( L max ) of northern shrimp ( Pandalus borealis ) decreased in commercial and survey catches off Newfoundland and Labrador. Decreased growth rates caused by decreases in per‐capita food availability due to large population increases, exacerbated by increased metabolic demands from higher water temperatures in the mid‐1990s, appear to be the main cause of the size decrease. Fishing could have had an accelerating effect on environmentally driven decreases in shrimp growth and size by ‘cropping’ the largest shrimp from the population. The greatest decreases in shrimp size occurred in Hudson Strait and the adjacent northern shelf, the area which also has the highest densities and largest shrimp. We hypothesize that the greater size decrease here resulted from decreased primary production from decreased nutrient flux into the euphotic zone, caused by increased atmospheric warming, freshwater runoff and stratification during the warming trend of the 1990s. Article in Journal/Newspaper Hudson Strait Newfoundland northern shrimp Pandalus borealis Wiley Online Library Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Newfoundland Fisheries Oceanography 16 2 105 115 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract During the 1990s, carapace length statistics including minimum size caught ( L min ), mean male and female lengths, size at sex transition ( L 50 ) and maximum size ( L max ) of northern shrimp ( Pandalus borealis ) decreased in commercial and survey catches off Newfoundland and Labrador. Decreased growth rates caused by decreases in per‐capita food availability due to large population increases, exacerbated by increased metabolic demands from higher water temperatures in the mid‐1990s, appear to be the main cause of the size decrease. Fishing could have had an accelerating effect on environmentally driven decreases in shrimp growth and size by ‘cropping’ the largest shrimp from the population. The greatest decreases in shrimp size occurred in Hudson Strait and the adjacent northern shelf, the area which also has the highest densities and largest shrimp. We hypothesize that the greater size decrease here resulted from decreased primary production from decreased nutrient flux into the euphotic zone, caused by increased atmospheric warming, freshwater runoff and stratification during the warming trend of the 1990s. |
format |
Article in Journal/Newspaper |
author |
KOELLER, P. A. FUENTES‐YACO, C. PLATT, T. |
spellingShingle |
KOELLER, P. A. FUENTES‐YACO, C. PLATT, T. Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? |
author_facet |
KOELLER, P. A. FUENTES‐YACO, C. PLATT, T. |
author_sort |
KOELLER, P. A. |
title |
Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? |
title_short |
Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? |
title_full |
Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? |
title_fullStr |
Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? |
title_full_unstemmed |
Decreasing shrimp ( Pandalus borealis) sizes off Newfoundland and Labrador – environment or fishing? |
title_sort |
decreasing shrimp ( pandalus borealis) sizes off newfoundland and labrador – environment or fishing? |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-2419.2006.00403.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2006.00403.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2006.00403.x |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) |
geographic |
Hudson Hudson Strait Newfoundland |
geographic_facet |
Hudson Hudson Strait Newfoundland |
genre |
Hudson Strait Newfoundland northern shrimp Pandalus borealis |
genre_facet |
Hudson Strait Newfoundland northern shrimp Pandalus borealis |
op_source |
Fisheries Oceanography volume 16, issue 2, page 105-115 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2419.2006.00403.x |
container_title |
Fisheries Oceanography |
container_volume |
16 |
container_issue |
2 |
container_start_page |
105 |
op_container_end_page |
115 |
_version_ |
1800753039707996160 |