A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data
The European Union has conducted since 1988 an annual bottom trawl survey in Flemish Cap (NAFO Division 3M) in the 200-720 m depth range. The information on roughhead grenadier population structure recorded during the last 14 EU surveys (1991-2004) in Flemish Cap is presented. Depth distribution of...
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Centro Oceanográfico de Vigo
2005
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ftieo:oai:repositorio.ieo.es:10508/820 2023-05-15T17:32:20+02:00 A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data Murua, H. (Hilario) González-Costas, F. (Fernando) Casas-Sánchez, J.M. (José Miguel) Atlantic Ocean North Atlantic Northwest Atlantic NAFO Flemish Cap 2005-06 http://hdl.handle.net/10508/820 eng eng Centro Oceanográfico de Vigo http://hdl.handle.net/10508/820 Murua, H., González, F., Casas, M. 2005. A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap. NAFO Sci. Coun. Res. Doc. 05/36, Serial Nº N5122: 18p. Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ CC-BY-NC-ND workingPaper 2005 ftieo 2022-07-26T23:46:50Z The European Union has conducted since 1988 an annual bottom trawl survey in Flemish Cap (NAFO Division 3M) in the 200-720 m depth range. The information on roughhead grenadier population structure recorded during the last 14 EU surveys (1991-2004) in Flemish Cap is presented. Depth distribution of captures, length/age distribution of captures, growth rates, sex-ratios, catch curves, and total biomass estimated by the swept area method are presented. Age and length composition of the catches showed clear differences between the two sexes. The importance of males in the capture declines in larger fish, disappearing from the capture in largest length classes. Results show that roughhead grenadier has a prolonged life cycle and multiaged population structure with differences in growth and mortality between males and females. Report North Atlantic Northwest Atlantic Instituto Español de Oceanografía: e-IEO |
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Open Polar |
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Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
description |
The European Union has conducted since 1988 an annual bottom trawl survey in Flemish Cap (NAFO Division 3M) in the 200-720 m depth range. The information on roughhead grenadier population structure recorded during the last 14 EU surveys (1991-2004) in Flemish Cap is presented. Depth distribution of captures, length/age distribution of captures, growth rates, sex-ratios, catch curves, and total biomass estimated by the swept area method are presented. Age and length composition of the catches showed clear differences between the two sexes. The importance of males in the capture declines in larger fish, disappearing from the capture in largest length classes. Results show that roughhead grenadier has a prolonged life cycle and multiaged population structure with differences in growth and mortality between males and females. |
format |
Report |
author |
Murua, H. (Hilario) González-Costas, F. (Fernando) Casas-Sánchez, J.M. (José Miguel) |
spellingShingle |
Murua, H. (Hilario) González-Costas, F. (Fernando) Casas-Sánchez, J.M. (José Miguel) A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data |
author_facet |
Murua, H. (Hilario) González-Costas, F. (Fernando) Casas-Sánchez, J.M. (José Miguel) |
author_sort |
Murua, H. (Hilario) |
title |
A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data |
title_short |
A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data |
title_full |
A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data |
title_fullStr |
A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data |
title_full_unstemmed |
A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap (NAFO Division 3M) 1991-2004 Based Upon EU Flemish Cap Bottom Survey Data |
title_sort |
review on roughhead grenadier (macrourus berglax) biology and population structure on flemish cap (nafo division 3m) 1991-2004 based upon eu flemish cap bottom survey data |
publisher |
Centro Oceanográfico de Vigo |
publishDate |
2005 |
url |
http://hdl.handle.net/10508/820 |
op_coverage |
Atlantic Ocean North Atlantic Northwest Atlantic NAFO Flemish Cap |
genre |
North Atlantic Northwest Atlantic |
genre_facet |
North Atlantic Northwest Atlantic |
op_relation |
http://hdl.handle.net/10508/820 Murua, H., González, F., Casas, M. 2005. A Review on Roughhead Grenadier (Macrourus berglax) Biology and Population Structure on Flemish Cap. NAFO Sci. Coun. Res. Doc. 05/36, Serial Nº N5122: 18p. |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766130404848304128 |