Study of the blue whiting movements around the Bay of Biscay using acoustic methods
During March–April 1994 and 1996 two cruises were carried out around Bay of Biscay in order to study movements of blue whiting using acoustic methods. These cruises consisted in a double coverage of an area from 47°30′N, 7°15′W to 43°30′N, 6°30′W along the French and Spanish continental shelf-break...
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Online Access: | http://hdl.handle.net/10508/7041 http://hdl.handle.net/10261/327869 https://doi.org/10.1016/S0165-7836(00)00248-4 |
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ftcsic:oai:digital.csic.es:10261/327869 2024-02-11T10:06:41+01:00 Study of the blue whiting movements around the Bay of Biscay using acoustic methods Carrera, Pablo Meijide-Cameselle, Manuel Porteiro-Lago, Carmen Miquel-Batle, Joan Atlantic Ocean Central Atlantic Eastern Central Atlantic Bay of Biscay 2001 http://hdl.handle.net/10508/7041 http://hdl.handle.net/10261/327869 https://doi.org/10.1016/S0165-7836(00)00248-4 unknown Centro Oceanográfico de Vigo http://www.sciencedirect.com/science/article/pii/S0165783600002484 Fisheries Research, 50(1-2). 2001: 151-161 http://hdl.handle.net/10508/7041 http://hdl.handle.net/10261/327869 doi:10.1016/S0165-7836(00)00248-4 1153 open Blue whiting Centro Oceanográfico de Vigo Pesquerías Bay of Biscay Acoustic methods Spatial distribution Migration research article 2001 ftcsic https://doi.org/10.1016/S0165-7836(00)00248-4 2024-01-16T11:49:08Z During March–April 1994 and 1996 two cruises were carried out around Bay of Biscay in order to study movements of blue whiting using acoustic methods. These cruises consisted in a double coverage of an area from 47°30′N, 7°15′W to 43°30′N, 6°30′W along the French and Spanish continental shelf-break (200–1000 m isobaths). Changes in spatial structure, abundance estimation, age structure and maturity stages have been analysed in each survey and coverage. Blue whiting is known as an important migratory species in the North Atlantic. By February/March, adult fish are concentrated around Porcupine Bank where they spawn. After this, it is believed that the fish migrate northward. From this study, rapid changes in both number of fish and population structure of blue whiting are clear. In 1994 the age structure was found and the differences in maturity stages together with an increasing in fish abundance from the first to the second leg, could indicate a southward movement after the spawning season from the main spawning ground. Results in 1996 were different from those of 1994. Juvenile fish were predominant and there was an important decrease from the first to the second trip. Nevertheless, it seems most likely that any southward postspawning migration from Porcupine Bank is undertaken by only a few young mature fish, but this migration is sparse compared to that undertaken northward. Due to the absence of adult fish, the abundance of younger fish as well as the lack of significant known spawning grounds, the studied area should be regarded as a nursery area as a result of a juvenile migration or a southward larvae drift. This process could be suggested rather than a postspawning migration. Sí Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Porcupine Bank ENVELOPE(-13.667,-13.667,53.333,53.333) Fisheries Research 50 1-2 151 161 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Blue whiting Centro Oceanográfico de Vigo Pesquerías Bay of Biscay Acoustic methods Spatial distribution Migration |
spellingShingle |
Blue whiting Centro Oceanográfico de Vigo Pesquerías Bay of Biscay Acoustic methods Spatial distribution Migration Carrera, Pablo Meijide-Cameselle, Manuel Porteiro-Lago, Carmen Miquel-Batle, Joan Study of the blue whiting movements around the Bay of Biscay using acoustic methods |
topic_facet |
Blue whiting Centro Oceanográfico de Vigo Pesquerías Bay of Biscay Acoustic methods Spatial distribution Migration |
description |
During March–April 1994 and 1996 two cruises were carried out around Bay of Biscay in order to study movements of blue whiting using acoustic methods. These cruises consisted in a double coverage of an area from 47°30′N, 7°15′W to 43°30′N, 6°30′W along the French and Spanish continental shelf-break (200–1000 m isobaths). Changes in spatial structure, abundance estimation, age structure and maturity stages have been analysed in each survey and coverage. Blue whiting is known as an important migratory species in the North Atlantic. By February/March, adult fish are concentrated around Porcupine Bank where they spawn. After this, it is believed that the fish migrate northward. From this study, rapid changes in both number of fish and population structure of blue whiting are clear. In 1994 the age structure was found and the differences in maturity stages together with an increasing in fish abundance from the first to the second leg, could indicate a southward movement after the spawning season from the main spawning ground. Results in 1996 were different from those of 1994. Juvenile fish were predominant and there was an important decrease from the first to the second trip. Nevertheless, it seems most likely that any southward postspawning migration from Porcupine Bank is undertaken by only a few young mature fish, but this migration is sparse compared to that undertaken northward. Due to the absence of adult fish, the abundance of younger fish as well as the lack of significant known spawning grounds, the studied area should be regarded as a nursery area as a result of a juvenile migration or a southward larvae drift. This process could be suggested rather than a postspawning migration. Sí |
format |
Article in Journal/Newspaper |
author |
Carrera, Pablo Meijide-Cameselle, Manuel Porteiro-Lago, Carmen Miquel-Batle, Joan |
author_facet |
Carrera, Pablo Meijide-Cameselle, Manuel Porteiro-Lago, Carmen Miquel-Batle, Joan |
author_sort |
Carrera, Pablo |
title |
Study of the blue whiting movements around the Bay of Biscay using acoustic methods |
title_short |
Study of the blue whiting movements around the Bay of Biscay using acoustic methods |
title_full |
Study of the blue whiting movements around the Bay of Biscay using acoustic methods |
title_fullStr |
Study of the blue whiting movements around the Bay of Biscay using acoustic methods |
title_full_unstemmed |
Study of the blue whiting movements around the Bay of Biscay using acoustic methods |
title_sort |
study of the blue whiting movements around the bay of biscay using acoustic methods |
publishDate |
2001 |
url |
http://hdl.handle.net/10508/7041 http://hdl.handle.net/10261/327869 https://doi.org/10.1016/S0165-7836(00)00248-4 |
op_coverage |
Atlantic Ocean Central Atlantic Eastern Central Atlantic Bay of Biscay |
long_lat |
ENVELOPE(-13.667,-13.667,53.333,53.333) |
geographic |
Porcupine Bank |
geographic_facet |
Porcupine Bank |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Centro Oceanográfico de Vigo http://www.sciencedirect.com/science/article/pii/S0165783600002484 Fisheries Research, 50(1-2). 2001: 151-161 http://hdl.handle.net/10508/7041 http://hdl.handle.net/10261/327869 doi:10.1016/S0165-7836(00)00248-4 1153 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/S0165-7836(00)00248-4 |
container_title |
Fisheries Research |
container_volume |
50 |
container_issue |
1-2 |
container_start_page |
151 |
op_container_end_page |
161 |
_version_ |
1790604559366750208 |