Distribution, yields and reproductive condition of pink cusk-eel (Genypterus blacodes) in the Argentine shelf (43° S-48° S) in winter and summer between 2000-2012
DOI:
https://doi.org/10.47193/mafis.3612023010105Keywords:
Southwest Atlantic, length structure, spatial distributionAbstract
In this study, length structure, reproductive condition and yields of ling (Genypterus blacodes) in the reproductive area of the species (43° S-48° S) between winter and summer were compared. Data were collected during research surveys conducted between 2000-2012. Length structure, sex and juvenile proportions, reproductive status and yields in both seasons were analyzed. In winter, the population was characterized by juveniles. Areas of aggregation of individuals were not evident, and the dominant reproductive condition was immature. However, there was a size segregation as a function of depth, with smallest individuals mainly in shallow waters and the largest at greater depths. In summer, an increase in the proportion of adults aggregated between 45° S-48° S was observed, most of them reproductively active and with a significant proportion of spawning females in the 45° 30' S and 47° 30' S sector, indicating the presence of a spawning area. There was a drop in average yields in both seasons, although this was more pronounced in the winter months and was accompanied by a sharp reduction in the observed maximum size observed, which could be due to factors related to the environment or be a consequence of fishing activity.
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Bianchi G, Carpenter KE, Roux JP, Molloy FJ, Boyer D, Boyer HJ. 1999. FAO species identification guide for fishery purposes. Field guide to the living marine resources of Namibia. Roma: FAO. 265 p.
Bruce BD, Bradford R, Daly R, Green M, Phillips K. 2002. Targeted review of biological and ecological information from fisheries research in the south east marine region. Final Report. Australia: CSIRO Marine Research. p. 39-42.
Cordo DH. 2004. Abadejo (Genypterus blacodes). Caracterización biológica y estado del recurso. En: Sánchez RP, Bezzi SI. editores. Los peces marinos de interés pesquero. Caracterización biológica y evaluación del estado de explotación. Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP). p. 237-253.
Cordo DH. 2006. Estructura y abundancia del stock reproductor del abadejo (Genypterus blacodes) del mar argentino en el periodo 1995-2000. Inf Téc INIDEP Nº 60/2006. 17 p.
Cordo DH, Machinandiarena L, Macch GJ, Villarino MF. 2002. Talla de primera madurez del abadejo (Genypterus blacodes) en el Atlántico Sudoccidental. Inf Téc INIDEP Nº 47/2002. 5 p.
D’Atri LL. 2006. Estructura de tallas y abundancia por grupo de edad del abadejo (Genypterus blacodes) en el área reproductiva. Inf Téc INIDEP Nº 102/2006. 19 p.
Horn PL, Dunn MR, Ballara SL. 2013. Stock assessment of ling (Genypterus blacodes) on the Chatham Rise (LIN 3&4) and in the Sub-Antarctic (LIN 5&6) for the 2011-12 fishing year. New Zealand Fisheries assessment Report. 2013/06. 87 p.
Irusta GC, Pisani E, Simonazzi M, Castrucci R. 2016. Análisis de la pesquería comercial de abadejo y del estado de explotación del recurso. Sugerencias de medidas de manejo. Inf Téc Of INIDEP Nº 33/2021. 21p.
Ivanovic ML. 1990. Análisis de la distribución del abadejo (Genypterus blacodes) en el periodo 1973-1986. Frente Marít. 7 (A): 7-17.
Kailola PJ, Williams MJ, Stewart PC, Reichelt RE, McNee A, Grieve C. 1993. Australian fisheries resources. Canberra: Bureau of Resource Sciences and the Fisheries Research and Development Corporation. 422 p.
Louge EB, Villarino MF, Martinez AP, Christiansen HE. 1992. Estructura macro y microscópica del ovario del abadejo (Genypterus blacodes) en estados de reversión y crecimiento ovocitario. Bol Inst Esp Oceanogr. 8 (2): 239-245.
Machinandiarena L. 1996. Estado actual del conocimiento de la reproducción y las áreas de cría del abadejo (Genypterus blacodes). Inf Téc Int DNI-INIDEP Nº 114/1996. 5 p.
Machinandiarena L, Villarino MF, Cordo HD, Macchi GJ, Pájaro M. 2003. Descripción macroscópica de los ovarios del abadejo manchado (Genypterus blacodes). Escala de maduración. Inf Téc INIDEP Nº 56/2003. 8 p.
Machinandiarena L, Villarino MF, Macchi GJ. 1998. Descripción del estadio de desove del abadejo manchado (Genypterus blacodes) (Schneider, 1801) (Pisces, Ophidiidae) en el mar argentino. Bol Inst Esp Oceanogr. 8 (1-2): 49-55.
Maunder MN, Punt AE. 2004. Standardizing catch and effort data: a review of recent approaches. Fish Res. 70 (2-3): 141-159.
O’Driscoll RL, Booth JD, Bagley NW, Anderson OF, Griggs LH, Stevenson ML, Francis MP. 2003. Areas of importance for spawning, pupping or egg-laying, and juveniles of New Zealand deep water fish, pelagic fish, and invertebrates. NIWA Tech Rep. 119. 377 p.
Otero HO, Bezzi SI, Renzi MA, Verazay GA. 1982. Atlas de los recursos pesqueros demersales del Mar Argentino. Contrib Inst Nac Invest Desarr Pesq (Mar del Plata) Nº 423.
Paredes F, Bravo R. 2005. Reproductive cycle, size at first maturation and fecundity in the Golden ling (Genypterus blacodes) in Chile. N Z Mar Freshwat Res. 39: 1085-1096.
Renzi MA. 1986. Aspectos biológico-pesqueros del abadejo (Genypterus blacodes). Rev Invest Desarr Pesq. 6: 5-19.
Sammarone M. 2019. Distribución, estructura de longitudes y abundancia del abadejo (Genypterus blacodes) en el área reproductiva patagónica. Periodo 2000-2012. Inf Invest INIDEP Nº 63/2019. 19 p.
Stefánsson G. 1996. Analysis of groundfish survey data: combining the GLM and delta approaches. ICES J Mar Sci. 53 (3): 577-588.
Tizley RDJ. 1994. Ling, Genypterus blacodes. En: Tizley RDJ, editor. The South East fishery, a scientific review with particular reference to quota management. Canberra: Bureau of Resource Sciences. p. 198-207.
Villarino MF. 1998. Distribución estacional y estructura de tallas del abadejo (Genypterus blacodes) en el Mar Argentino. Inf Téc INIDEP Nº 18/1998. 25 p.
Ward RD, Appleyard SA, Daley RK, Reilly A. 2001. Population structure of pink ling (Genypterus blacodes) from south eastern Australian waters, inferred from allozyme and microsatellite analyses. Mar Freshwat Res. 52: 965-973.
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