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...
Guardado en:
| Autores principales: | , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_13851101_v77_n_p22_CrespiAbril |
| Aporte de: |
| id |
todo:paper_13851101_v77_n_p22_CrespiAbril |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_13851101_v77_n_p22_CrespiAbril2023-10-03T16:12:06Z 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 Crespi-Abril, A.C. Morsan, E.M. Williams, G.N. Gagliardini, D.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Crespi-Abril, A.C. Morsan, E.M. Williams, G.N. Gagliardini, D.A. 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. |
| format |
JOUR |
| author |
Crespi-Abril, A.C. Morsan, E.M. Williams, G.N. Gagliardini, D.A. |
| author_facet |
Crespi-Abril, A.C. Morsan, E.M. Williams, G.N. Gagliardini, D.A. |
| author_sort |
Crespi-Abril, A.C. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_13851101_v77_n_p22_CrespiAbril |
| work_keys_str_mv |
AT crespiabrilac spatialdistributionofillexargentinusinsanmatiasgulfnorthernpatagoniaargentinainrelationtoenvironmentalvariablesacontributiontothenewinterpretationofthepopulationstructuring AT morsanem spatialdistributionofillexargentinusinsanmatiasgulfnorthernpatagoniaargentinainrelationtoenvironmentalvariablesacontributiontothenewinterpretationofthepopulationstructuring AT williamsgn spatialdistributionofillexargentinusinsanmatiasgulfnorthernpatagoniaargentinainrelationtoenvironmentalvariablesacontributiontothenewinterpretationofthepopulationstructuring AT gagliardinida spatialdistributionofillexargentinusinsanmatiasgulfnorthernpatagoniaargentinainrelationtoenvironmentalvariablesacontributiontothenewinterpretationofthepopulationstructuring |
| _version_ |
1807317429509947392 |