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Abstract:

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.

Registro:

Documento: Artículo
Título: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
Autor:Crespi-Abril, A.C.; Morsan, E.M.; Williams, G.N.; Gagliardini, D.A.
Filiación:Centro Nacional Patagónico (CONICET), Boulevard Brown s/n (U9120ACV), Puerto Madryn, Chubut, Argentina
Instituto de Biología Marina y Pesquera Almirante Storni (IBMPAS), Güemes 1030, (8520) San Antonio Oeste, Río Negro, Argentina
Universidad Nacional del Comahue, Güemes 1030, (8520), San Antonio Oeste, Rio Negro, Argentina
Instituto de Astronomía y Física del Espacio (IAFE, CONICET), Ciudad Universitaria, Casilla de Correo 67, Suc. 28 (C1428ZAA), Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave: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
Año:2013
Volumen:77
Página de inicio:22
Página de fin:31
DOI: http://dx.doi.org/10.1016/j.seares.2012.12.008
Título revista:Journal of Sea Research
Título revista abreviado:J. Sea Res.
ISSN:13851101
CODEN:JSREF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13851101_v77_n_p22_CrespiAbril

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Citas:

---------- APA ----------
Crespi-Abril, A.C., Morsan, E.M., Williams, G.N. & Gagliardini, D.A. (2013) . 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. Journal of Sea Research, 77, 22-31.
http://dx.doi.org/10.1016/j.seares.2012.12.008
---------- CHICAGO ----------
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" . Journal of Sea Research 77 (2013) : 22-31.
http://dx.doi.org/10.1016/j.seares.2012.12.008
---------- MLA ----------
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" . Journal of Sea Research, vol. 77, 2013, pp. 22-31.
http://dx.doi.org/10.1016/j.seares.2012.12.008
---------- VANCOUVER ----------
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. J. Sea Res. 2013;77:22-31.
http://dx.doi.org/10.1016/j.seares.2012.12.008