Variación temporal en la dieta del congrio colorado, Genypterus chilensis (Guichenot, 1881) frente al litoral de Talcahuano, Chile (36º32'S - 36º45'S)
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad de Valparaíso
2006
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| _version_ | 1876486066589925376 |
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| author | Karina Sepúlveda |
| author_facet | Karina Sepúlveda |
| contents | Variación temporal en la dieta del congrio colorado, Genypterus chilensis (Guichenot, 1881) frente al litoral de Talcahuano, Chile (36º32'S - 36º45'S) Karina Sepúlveda Javier Chong Christian M. Ibáñez Ciencias de la Tierra feeding prey diversity temporal variations Genypterus chilensis A study of the gastric content of G. chilensis carried out in the area of Talcahuano is presented, based on samples obtained during two periods: 1974-75 and 1996-97. In the second period, monthly samples were obtained with the objective of performing seasonal comparisons in the diet. The diet was described by means of frequency, numeric and gravimetric methods, and numeric and relative importance index. Diversity was compared among years of sampling and between seasons of the second period. The red ling possesses a trophy spectrum with a clear preference toward the euriphagy in the study area, since it feeds at least of 38 types of prey corresponding to crustaceans, mollusks and fish, with Pleuroncodes monodon dominant in both periods. Differences in richness and diversity of prey among years were recorded; furthermore there were differences between spring and winter in the period 1996-97. The high consumption of benthic crustaceans, particularly of P. monodon, could be attributed to a higher consumption of more abundant prey, and the feeding preference would be associated with its way of benthic life and the environmental offer in the area and study time. The variations in the diet between years and seasons would depend on the changes in composition, abundance and diversity of the preys in the study area. 2006 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47941207 en http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.2 Vol.41 |
| format | Artículo científico |
| id | redalyc_47941207 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad de Valparaíso |
| spellingShingle | Variación temporal en la dieta del congrio colorado, Genypterus chilensis (Guichenot, 1881) frente al litoral de Talcahuano, Chile (36º32'S - 36º45'S) Karina Sepúlveda Ciencias de la Tierra feeding prey diversity temporal variations Genypterus chilensis Variación temporal en la dieta del congrio colorado, Genypterus chilensis (Guichenot, 1881) frente al litoral de Talcahuano, Chile (36º32'S - 36º45'S) Karina Sepúlveda Javier Chong Christian M. Ibáñez Ciencias de la Tierra feeding prey diversity temporal variations Genypterus chilensis A study of the gastric content of G. chilensis carried out in the area of Talcahuano is presented, based on samples obtained during two periods: 1974-75 and 1996-97. In the second period, monthly samples were obtained with the objective of performing seasonal comparisons in the diet. The diet was described by means of frequency, numeric and gravimetric methods, and numeric and relative importance index. Diversity was compared among years of sampling and between seasons of the second period. The red ling possesses a trophy spectrum with a clear preference toward the euriphagy in the study area, since it feeds at least of 38 types of prey corresponding to crustaceans, mollusks and fish, with Pleuroncodes monodon dominant in both periods. Differences in richness and diversity of prey among years were recorded; furthermore there were differences between spring and winter in the period 1996-97. The high consumption of benthic crustaceans, particularly of P. monodon, could be attributed to a higher consumption of more abundant prey, and the feeding preference would be associated with its way of benthic life and the environmental offer in the area and study time. The variations in the diet between years and seasons would depend on the changes in composition, abundance and diversity of the preys in the study area. 2006 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47941207 en http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.2 Vol.41 |
| title | Variación temporal en la dieta del congrio colorado, Genypterus chilensis (Guichenot, 1881) frente al litoral de Talcahuano, Chile (36º32'S - 36º45'S) |
| topic | Ciencias de la Tierra feeding prey diversity temporal variations Genypterus chilensis |
| url | https://www.redalyc.org/articulo.oa?id=47941207 |