Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area
In February 1995 the European Union carried out a selectivity survey on board a Spanish commercial trawler, using the codend-cover method. The objective was to study the selectivity of 130 mm mesh size for the deep sea trawl fisheries in the NAFO Regulatory Area. One hour and four hour hauls were ca...
Main Authors: | , , , |
---|---|
Format: | Report |
Language: | English |
Published: |
Northwest Atlantic Fisheries Organization (NAFO)
1997
|
Subjects: | |
Online Access: | http://hdl.handle.net/10508/1601 |
id |
ftieo:oai:repositorio.ieo.es:10508/1601 |
---|---|
record_format |
openpolar |
spelling |
ftieo:oai:repositorio.ieo.es:10508/1601 2023-05-15T16:27:26+02:00 Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area Cárdenas-González, E. (Enrique) de Ávila-de-Melo, A. (Antonio) Saborido-Rey, F. (Francisco) Iglesias-Martínez, S. (Sergio) Atlantic Ocean North Atlantic Northwest Atlantic 1997 http://hdl.handle.net/10508/1601 eng eng Northwest Atlantic Fisheries Organization (NAFO) Centro Oceanográfico de Vigo http://hdl.handle.net/10508/1601 Cárdenas, E. de et al. 1997. Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area. NAFO Sci. Coun. Studies, 30: 21-25 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess CC-BY-NC-ND American plaice Greenland halibut roughhead grenadier selectivity threebeard rockling trawl workingPaper 1997 ftieo 2022-07-26T23:47:03Z In February 1995 the European Union carried out a selectivity survey on board a Spanish commercial trawler, using the codend-cover method. The objective was to study the selectivity of 130 mm mesh size for the deep sea trawl fisheries in the NAFO Regulatory Area. One hour and four hour hauls were carried out and results obtained for Greenland halibut (Reinhardtius hippoglossoides), American plaice (Hippoglossoides platessoides), roughhead grenadier (Macrourus berglax) and threebeard rockling (Gaidropsarus ensis). For the two flatfish species, the proportion of retention increased with the duration of the haul. This increase reflected in a decrease of the corresponding selection factor. It also varied with the size of fish. The selection factor was greater in smaller individuals, and this induced an asymmetry in the selectivity curve. For the groundfish species, data were enough only to fit the four hour selectivity curves, which appeared more symmetrical than the flatfish ones. Report Greenland North Atlantic Northwest Atlantic Instituto Español de Oceanografía: e-IEO Greenland |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
American plaice Greenland halibut roughhead grenadier selectivity threebeard rockling trawl |
spellingShingle |
American plaice Greenland halibut roughhead grenadier selectivity threebeard rockling trawl Cárdenas-González, E. (Enrique) de Ávila-de-Melo, A. (Antonio) Saborido-Rey, F. (Francisco) Iglesias-Martínez, S. (Sergio) Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area |
topic_facet |
American plaice Greenland halibut roughhead grenadier selectivity threebeard rockling trawl |
description |
In February 1995 the European Union carried out a selectivity survey on board a Spanish commercial trawler, using the codend-cover method. The objective was to study the selectivity of 130 mm mesh size for the deep sea trawl fisheries in the NAFO Regulatory Area. One hour and four hour hauls were carried out and results obtained for Greenland halibut (Reinhardtius hippoglossoides), American plaice (Hippoglossoides platessoides), roughhead grenadier (Macrourus berglax) and threebeard rockling (Gaidropsarus ensis). For the two flatfish species, the proportion of retention increased with the duration of the haul. This increase reflected in a decrease of the corresponding selection factor. It also varied with the size of fish. The selection factor was greater in smaller individuals, and this induced an asymmetry in the selectivity curve. For the groundfish species, data were enough only to fit the four hour selectivity curves, which appeared more symmetrical than the flatfish ones. |
format |
Report |
author |
Cárdenas-González, E. (Enrique) de Ávila-de-Melo, A. (Antonio) Saborido-Rey, F. (Francisco) Iglesias-Martínez, S. (Sergio) |
author_facet |
Cárdenas-González, E. (Enrique) de Ávila-de-Melo, A. (Antonio) Saborido-Rey, F. (Francisco) Iglesias-Martínez, S. (Sergio) |
author_sort |
Cárdenas-González, E. (Enrique) de |
title |
Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area |
title_short |
Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area |
title_full |
Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area |
title_fullStr |
Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area |
title_full_unstemmed |
Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area |
title_sort |
selectivity of 130 mm mesh size in deep sea bottom trawl fishery in nafo regulatory area |
publisher |
Northwest Atlantic Fisheries Organization (NAFO) |
publishDate |
1997 |
url |
http://hdl.handle.net/10508/1601 |
op_coverage |
Atlantic Ocean North Atlantic Northwest Atlantic |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic Northwest Atlantic |
genre_facet |
Greenland North Atlantic Northwest Atlantic |
op_relation |
http://hdl.handle.net/10508/1601 Cárdenas, E. de et al. 1997. Selectivity of 130 mm Mesh Size in Deep Sea Bottom Trawl Fishery in NAFO Regulatory Area. NAFO Sci. Coun. Studies, 30: 21-25 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766016603492712448 |