Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring

Traditionally, it was assumed that major spawning activity of Illex argentinus occurs in discrete pulses along the outer-shelf/slope off Argentina/southern Brazil during late-fall/winter and that early life stages develop near the Brazil-Malvinas Confluence (BMC). However, a novel hypothesis of the...

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Detalles Bibliográficos
Publicado:	2013
Materias:	Coastal fishery Illex argentinus Jigging fishery San Matias Gulf Spatial distribution breeding site cephalopod fishery coastal water environmental gradient fishery modeling hypothesis testing population structure spatial distribution spawning Atlantic Ocean Patagonia Cephalopoda
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13851101_v77_n_p22_CrespiAbril http://hdl.handle.net/20.500.12110/paper_13851101_v77_n_p22_CrespiAbril
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_13851101_v77_n_p22_CrespiAbril
record_format	dspace
spelling	paper:paper_13851101_v77_n_p22_CrespiAbril2025-07-30T18:48:25Z Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring Coastal fishery Illex argentinus Jigging fishery San Matias Gulf Spatial distribution breeding site cephalopod fishery coastal water environmental gradient fishery modeling hypothesis testing population structure spatial distribution spawning Atlantic Ocean Patagonia San Matias Gulf Cephalopoda Illex argentinus Traditionally, it was assumed that major spawning activity of Illex argentinus occurs in discrete pulses along the outer-shelf/slope off Argentina/southern Brazil during late-fall/winter and that early life stages develop near the Brazil-Malvinas Confluence (BMC). However, a novel hypothesis of the population structuring of the species was proposed that states that coastal waters may be important as spawning and feeding grounds. Here, we analyzed the spatial distribution of Illex argentinus inside San Matias Gulf based on the position of the CPUE of jiggers in order to improve the knowledge of the population structuring in coastal regions. Squids were mainly concentrated on the northern region of the gulf where favorable oceanographic conditions (e.g. water stratification, chlorophyll-a concentration peaks) to feeding and spawning are present. These results provided empirical evidences that individuals of I. argentinus use Argentinean coastal waters, particularly San Matias Gulf, as permanent feeding and spawning grounds which supports the new hypothesis. © 2013 Elsevier B.V. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13851101_v77_n_p22_CrespiAbril http://hdl.handle.net/20.500.12110/paper_13851101_v77_n_p22_CrespiAbril
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Coastal fishery Illex argentinus Jigging fishery San Matias Gulf Spatial distribution breeding site cephalopod fishery coastal water environmental gradient fishery modeling hypothesis testing population structure spatial distribution spawning Atlantic Ocean Patagonia San Matias Gulf Cephalopoda Illex argentinus
spellingShingle	Coastal fishery Illex argentinus Jigging fishery San Matias Gulf Spatial distribution breeding site cephalopod fishery coastal water environmental gradient fishery modeling hypothesis testing population structure spatial distribution spawning Atlantic Ocean Patagonia San Matias Gulf Cephalopoda Illex argentinus Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring
topic_facet	Coastal fishery Illex argentinus Jigging fishery San Matias Gulf Spatial distribution breeding site cephalopod fishery coastal water environmental gradient fishery modeling hypothesis testing population structure spatial distribution spawning Atlantic Ocean Patagonia San Matias Gulf Cephalopoda Illex argentinus
description	Traditionally, it was assumed that major spawning activity of Illex argentinus occurs in discrete pulses along the outer-shelf/slope off Argentina/southern Brazil during late-fall/winter and that early life stages develop near the Brazil-Malvinas Confluence (BMC). However, a novel hypothesis of the population structuring of the species was proposed that states that coastal waters may be important as spawning and feeding grounds. Here, we analyzed the spatial distribution of Illex argentinus inside San Matias Gulf based on the position of the CPUE of jiggers in order to improve the knowledge of the population structuring in coastal regions. Squids were mainly concentrated on the northern region of the gulf where favorable oceanographic conditions (e.g. water stratification, chlorophyll-a concentration peaks) to feeding and spawning are present. These results provided empirical evidences that individuals of I. argentinus use Argentinean coastal waters, particularly San Matias Gulf, as permanent feeding and spawning grounds which supports the new hypothesis. © 2013 Elsevier B.V.
title	Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring
title_short	Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring
title_full	Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring
title_fullStr	Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring
title_full_unstemmed	Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring
title_sort	spatial distribution of illex argentinus in san matias gulf (northern patagonia, argentina) in relation to environmental variables: a contribution to the new interpretation of the population structuring
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13851101_v77_n_p22_CrespiAbril http://hdl.handle.net/20.500.12110/paper_13851101_v77_n_p22_CrespiAbril
_version_	1840326421518483456

Spatial distribution of Illex argentinus in San Matias Gulf (Northern Patagonia, Argentina) in relation to environmental variables: A contribution to the new interpretation of the population structuring

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