Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina
The carp (Cyprinus carpio) is an exotic fish that currently inhabits most of the Pampasic shallow lakes. A better knowledge of its trophic spectrum and of the relative composition of its diet may represent a very useful information to understand its biology, as well as the ecological niche occupied by its populations in these environments. In this work the food habits of the carp were studied in Lobos shallow lake, from the analysis of 75 digestive tracts of fish with a mean standard length of 409.7 mm, captured between March and August of 1994. Food items were counted and classified taxonomically up to the family level. Values for several indexes were calculated with this information, and the seasonal pattern of variation of the digestive contents was analyzed using Correspondence Analysis. The species showed a wide trophic spectrum. The main food items, in order of importance were vegetable fragments, Ciclopoidea, Chidoridae, Chironomidae, Bosminidae, Harpacticoidae and seeds. The second axis of the ordination showed the existence of seasonality in the diet, which could be related to the availability of organisms in the environment. The abundance of zooplanktonic organisms in the diet coincides with that found in fishes from Asian and European shallow lakes, and it established the major difference with several deep lakes of the world, where the carp is exclusively bottom-feeder. This could be due to the opportunistic character and to the trophic plasticity of this species, which would take advantage of the offer of a particularly abundant food resource in the Pampasic shallow lakes.
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Asociación Argentina de Ecología
2001
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rev-ecoaus-article-15712021-01-12T22:27:18Z Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina Alimentación de la carpa (Cyprinus carpio Linnaeus 1758) en la laguna de Lobos, Provincia de Buenos Aires, Argentina Colautti, Darío C. Remes Lenicov, Mauricio The carp (Cyprinus carpio) is an exotic fish that currently inhabits most of the Pampasic shallow lakes. A better knowledge of its trophic spectrum and of the relative composition of its diet may represent a very useful information to understand its biology, as well as the ecological niche occupied by its populations in these environments. In this work the food habits of the carp were studied in Lobos shallow lake, from the analysis of 75 digestive tracts of fish with a mean standard length of 409.7 mm, captured between March and August of 1994. Food items were counted and classified taxonomically up to the family level. Values for several indexes were calculated with this information, and the seasonal pattern of variation of the digestive contents was analyzed using Correspondence Analysis. The species showed a wide trophic spectrum. The main food items, in order of importance were vegetable fragments, Ciclopoidea, Chidoridae, Chironomidae, Bosminidae, Harpacticoidae and seeds. The second axis of the ordination showed the existence of seasonality in the diet, which could be related to the availability of organisms in the environment. The abundance of zooplanktonic organisms in the diet coincides with that found in fishes from Asian and European shallow lakes, and it established the major difference with several deep lakes of the world, where the carp is exclusively bottom-feeder. This could be due to the opportunistic character and to the trophic plasticity of this species, which would take advantage of the offer of a particularly abundant food resource in the Pampasic shallow lakes. La carpa (Cyprinus carpio) es un pez exótico que actualmente habita la mayoría de las lagunas pampásicas. El conocimiento del espectro trófico y de la importancia relativa de los componentes de su dieta representa información muy útil para la comprensión de su biología y del nicho ecológico ocupado por sus poblaciones en estos ambientes. En este trabajo se estudio la alimentación de la carpa en la laguna de Lobos, a partir del análisis de 75 tubos digestivos de peces con una longitud estándar promedio de 409.7 mm, capturados entre marzo y agosto de 1994. Los ítems alimentarios fueron contados y clasificados taxonómicamente hasta el nivel de familia. Con la información obtenida se calcularon índices alimentarios y se analizó el patrón de variación estacional de los contenidos digestivos empleando un Análisis de Correspondencia. La especie presentó un espectro trófico amplio. Los principales ítems alimentarios, en orden de importancia, fueron restos vegetales, Ciclopoidea, Chidoridae, Chironomidae, Bosminidae, Harpacticoidae y semillas. El segundo eje del ordenamiento indicó la existencia de estacionalidad en la dieta, que estaría relacionada con la disponibilidad de los organismos en el ambiente. La abundancia de organismos zooplanctónicos en la dieta coincide con lo hallado en ambientes de escasa profundidad de Asia y Europa, y estableció la mayor diferencia con respecto a varios lagos profundos del mundo donde la carpa es netamente bentófaga. Esto se debería al carácter oportunista y a la plasticidad trófica de la especie, la cual aprovecharía la oferta de un recurso alimentario particularmente abundante en las lagunas pampásicas. Asociación Argentina de Ecología 2001-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1571 Ecología Austral; Vol. 11 No. 2 (2001); 069-078 Ecología Austral; Vol. 11 Núm. 2 (2001); 069-078 0327-5477 1667-7838 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1571/905 Derechos de autor 2021 Ecología Austral |
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Colautti, Darío C. Remes Lenicov, Mauricio |
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Colautti, Darío C. Remes Lenicov, Mauricio Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina |
author_facet |
Colautti, Darío C. Remes Lenicov, Mauricio |
author_sort |
Colautti, Darío C. |
title |
Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina |
title_short |
Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina |
title_full |
Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina |
title_fullStr |
Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina |
title_full_unstemmed |
Feeding of carp (Cyprinus carpio Linnaeus 1758) in Lobos shallow lake, Buenos Aires Province, Argentina |
title_sort |
feeding of carp (cyprinus carpio linnaeus 1758) in lobos shallow lake, buenos aires province, argentina |
description |
The carp (Cyprinus carpio) is an exotic fish that currently inhabits most of the Pampasic shallow lakes. A better knowledge of its trophic spectrum and of the relative composition of its diet may represent a very useful information to understand its biology, as well as the ecological niche occupied by its populations in these environments. In this work the food habits of the carp were studied in Lobos shallow lake, from the analysis of 75 digestive tracts of fish with a mean standard length of 409.7 mm, captured between March and August of 1994. Food items were counted and classified taxonomically up to the family level. Values for several indexes were calculated with this information, and the seasonal pattern of variation of the digestive contents was analyzed using Correspondence Analysis. The species showed a wide trophic spectrum. The main food items, in order of importance were vegetable fragments, Ciclopoidea, Chidoridae, Chironomidae, Bosminidae, Harpacticoidae and seeds. The second axis of the ordination showed the existence of seasonality in the diet, which could be related to the availability of organisms in the environment. The abundance of zooplanktonic organisms in the diet coincides with that found in fishes from Asian and European shallow lakes, and it established the major difference with several deep lakes of the world, where the carp is exclusively bottom-feeder. This could be due to the opportunistic character and to the trophic plasticity of this species, which would take advantage of the offer of a particularly abundant food resource in the Pampasic shallow lakes. |
publisher |
Asociación Argentina de Ecología |
publishDate |
2001 |
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https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1571 |
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