Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998
During the 1986-1998 period the hake (Merluccius hubbsi) fishery in the Argentine Sea (SW Atlantic) turned from moderate to intense exploitation. Age and sex structure analysis showed a change in the exploitation pattern. During the three periods defined 1986-1989, 1990-1992 and 1993-1998 a trend towards catching young individuals and a predominance of females age 3 and older was observed. An increase of total mortality was also detected. As a consequence of the establishment of a closed area in mid 1997 ice-chilling and freezer fleets changed operation areas which brought about differences in the catch structure. Freezers showed higher percentages of older ages. An average decrease of 30 in yield number of individuals per unit effort for all ages was also observed.
Main Author: | |
---|---|
Format: | Journal Contribution biblioteca |
Language: | Spanish / Castilian |
Published: |
Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero
2003
|
Subjects: | Age composition, Sex ratio, Landing statistics, Gadoid fisheries, |
Online Access: | http://hdl.handle.net/1834/2423 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-aquadocs-1834-2423 |
---|---|
record_format |
koha |
spelling |
dig-aquadocs-1834-24232021-05-19T06:23:16Z Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 Age and sex structure of landed hake. Years 1986-1998 Renzi, M.A. Age composition Sex ratio Age composition Sex ratio Landing statistics Gadoid fisheries During the 1986-1998 period the hake (Merluccius hubbsi) fishery in the Argentine Sea (SW Atlantic) turned from moderate to intense exploitation. Age and sex structure analysis showed a change in the exploitation pattern. During the three periods defined 1986-1989, 1990-1992 and 1993-1998 a trend towards catching young individuals and a predominance of females age 3 and older was observed. An increase of total mortality was also detected. As a consequence of the establishment of a closed area in mid 1997 ice-chilling and freezer fleets changed operation areas which brought about differences in the catch structure. Freezers showed higher percentages of older ages. An average decrease of 30 in yield number of individuals per unit effort for all ages was also observed. En: Tringali, L.S.; Bezzi, S.I.; eds.Aportes para la evaluación del recurso merluza (Merluccius hubbsi) al sur de los 41°S. Año 1999. Published Merlucciidae, Merluccius hubbsi, merluza 2008-05-31T13:28:34Z 2008-05-31T13:28:34Z 2003 Journal Contribution INIDEP informe técnico, 51. p. 39-56 0327-9642 http://hdl.handle.net/1834/2423 es Argentina, Patagonia Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero |
institution |
UNESCO |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-aquadocs |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Repositorio AQUADOCS |
language |
Spanish / Castilian |
topic |
Age composition Sex ratio Age composition Sex ratio Landing statistics Gadoid fisheries Age composition Sex ratio Age composition Sex ratio Landing statistics Gadoid fisheries |
spellingShingle |
Age composition Sex ratio Age composition Sex ratio Landing statistics Gadoid fisheries Age composition Sex ratio Age composition Sex ratio Landing statistics Gadoid fisheries Renzi, M.A. Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 |
description |
During the 1986-1998 period the hake (Merluccius hubbsi) fishery in the Argentine Sea (SW Atlantic) turned from moderate to intense exploitation. Age and sex structure analysis showed a change in the exploitation pattern. During the three periods defined 1986-1989, 1990-1992 and 1993-1998 a trend towards catching young individuals and a predominance of females age 3 and older was observed. An increase of total mortality was also detected. As a consequence of the establishment of a closed area in mid 1997 ice-chilling and freezer fleets changed operation areas which brought about differences in the catch structure. Freezers showed higher percentages of older ages. An average decrease of 30 in yield number of individuals per unit effort for all ages was also observed. |
format |
Journal Contribution |
topic_facet |
Age composition Sex ratio Age composition Sex ratio Landing statistics Gadoid fisheries |
author |
Renzi, M.A. |
author_facet |
Renzi, M.A. |
author_sort |
Renzi, M.A. |
title |
Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 |
title_short |
Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 |
title_full |
Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 |
title_fullStr |
Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 |
title_full_unstemmed |
Estructura por edad y sexo de la captura de merluza desembarcada. Período 1986-1998 |
title_sort |
estructura por edad y sexo de la captura de merluza desembarcada. período 1986-1998 |
publisher |
Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero |
publishDate |
2003 |
url |
http://hdl.handle.net/1834/2423 |
work_keys_str_mv |
AT renzima estructuraporedadysexodelacapturademerluzadesembarcadaperiodo19861998 AT renzima ageandsexstructureoflandedhakeyears19861998 |
_version_ |
1756075397836963840 |