Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano
The mullet Mugil incilis is one of the most important fish resources in the Ciénaga Grande de Santa Marta. Based on monitoring of fishery statistics collected in the periods 1994-1996 and 2000-2007 and biological aspects of the species between 2006 and 2007, we evaluated fishing effects on the reproductive biology of M. incilis. Fishery statistics revealed that catch and fish size declined with time. Peak spawning was observed to occur between November - December, when the gonadosomatic index and condition factor showed their maximum values, contrasting with water salinity that plunged in the rainy period. Male: female ratio was estimated as 1:3 after a sample of 1954 individuals, and mean maturity size (MMS) calculated as 23.8 cm total length (TL), lower than that previously reported. Mullet represented 30 % of the whole fish catch in the period 1994-2007, and 65 % of the individuals were found below their MMS, mainly caught with cast-nets at spawning time. Lower occurrence of larger fish in the catch seems to be a reasonable explanation for the reduction of MMS. No evidence was found to attribute this decrease to a species strategy. Management measures for this fishery are discussed and suggested.
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Format: | Journal Contribution biblioteca |
Language: | Spanish / Castilian |
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INVEMAR, Santa Marta (Colombia)
2010
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Subjects: | Reproduction, |
Online Access: | http://hdl.handle.net/1834/4017 |
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dig-aquadocs-1834-40172021-05-19T06:33:38Z Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano Effects of fishing on the reproductive biology of the mullet Mugil incilis (Pisces: Mugilidae) in the Ciénaga Grande de Santa Marta, Colombian Caribbean Mármol-Rada, D. Viloria-Maestre, E. Blanco-Racedo, J. Reproduction Reproduction The mullet Mugil incilis is one of the most important fish resources in the Ciénaga Grande de Santa Marta. Based on monitoring of fishery statistics collected in the periods 1994-1996 and 2000-2007 and biological aspects of the species between 2006 and 2007, we evaluated fishing effects on the reproductive biology of M. incilis. Fishery statistics revealed that catch and fish size declined with time. Peak spawning was observed to occur between November - December, when the gonadosomatic index and condition factor showed their maximum values, contrasting with water salinity that plunged in the rainy period. Male: female ratio was estimated as 1:3 after a sample of 1954 individuals, and mean maturity size (MMS) calculated as 23.8 cm total length (TL), lower than that previously reported. Mullet represented 30 % of the whole fish catch in the period 1994-2007, and 65 % of the individuals were found below their MMS, mainly caught with cast-nets at spawning time. Lower occurrence of larger fish in the catch seems to be a reasonable explanation for the reduction of MMS. No evidence was found to attribute this decrease to a species strategy. Management measures for this fishery are discussed and suggested. La lisa Mugil incilis representa uno de los recursos más importantes en la Ciénaga Grande de Santa Marta (CGSM). Con base en un monitoreo de las estadísticas de pesca colectadas en los períodos 1994-1996 y 2000-2007 y de aspectos biológicos de la especie entre 2006 y 2007, se evaluaron los efectos de la pesca artesanal sobre la biología reproductiva de M. incilis. Las estadísticas de pesca evidenciaron que la captura y tallas desembarcadas han disminuido en el tiempo. El pico de desove de la especie ocurrió en noviembre y diciembre cuando el índice gonadosomático y el factor de condición presentaron sus valores máximos, mientras la salinidad del agua disminuyó por la época de lluvias. De una muestra de 1954 individuos, se estimó que la proporción macho: hembra fue 1:3 y la talla media de madurez (TMM) fue 23.8 cm de longitud total, inferior a las estimadas previamente. Mugil incilis representó el 30 % de la captura anual de pescado en la CGSM entre 1994-2007, con 65 % de los individuos por debajo de la TMM y capturados principalmente con atarrayas en la época de desove. La menor frecuencia de capturas de peces de mayor tamaño parece explicar la disminución de la TMM. No se observaron evidencias para atribuir dicho decrecimiento a alguna estrategia de la especie. Se discuten y sugieren medidas para el manejo de esta pesquería. Published Mugil incilis, Small-scale fishery 2011-07-06T20:34:24Z 2011-07-06T20:34:24Z 2010 Journal Contribution Boletín de investigaciones marinas y costeras, 39(2). p. 215-231 0122-9761 http://hdl.handle.net/1834/4017 es Ciénaga Grande de Santa Marta Colombian Caribbean INVEMAR, Santa Marta (Colombia) Boletín de Investigaciones Marinas y Costeras |
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Reproduction Reproduction Reproduction Reproduction |
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Reproduction Reproduction Reproduction Reproduction Mármol-Rada, D. Viloria-Maestre, E. Blanco-Racedo, J. Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano |
description |
The mullet Mugil incilis is one of the most important fish resources in the Ciénaga Grande de Santa Marta. Based on monitoring of fishery statistics collected in the periods 1994-1996 and 2000-2007 and biological aspects of the species between 2006 and 2007, we evaluated fishing effects on the reproductive biology of M. incilis. Fishery statistics revealed that catch and fish size declined with time. Peak spawning was observed to occur between November - December, when the gonadosomatic index and condition factor showed their maximum values, contrasting with water salinity that plunged in the rainy period. Male: female ratio was estimated as 1:3 after a sample of 1954 individuals, and mean maturity size (MMS) calculated as 23.8 cm total length (TL), lower than that previously reported. Mullet represented 30 % of the whole fish catch in the period 1994-2007, and 65 % of the individuals were found below their MMS, mainly caught with cast-nets at spawning time. Lower occurrence of larger fish in the catch seems to be a reasonable explanation for the reduction of MMS. No evidence was found to attribute this decrease to a species strategy. Management measures for this fishery are discussed and suggested. |
format |
Journal Contribution |
topic_facet |
Reproduction Reproduction |
author |
Mármol-Rada, D. Viloria-Maestre, E. Blanco-Racedo, J. |
author_facet |
Mármol-Rada, D. Viloria-Maestre, E. Blanco-Racedo, J. |
author_sort |
Mármol-Rada, D. |
title |
Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano |
title_short |
Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano |
title_full |
Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano |
title_fullStr |
Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano |
title_full_unstemmed |
Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano |
title_sort |
efectos de la pesca sobre la biología reproductiva de la lisa mugil incilis (pisces: mugilidae) en la ciénaga grande de santa marta, caribe colombiano |
publisher |
INVEMAR, Santa Marta (Colombia) |
publishDate |
2010 |
url |
http://hdl.handle.net/1834/4017 |
work_keys_str_mv |
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