Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)

San Roque reservoir (31º22`S, 64º27´W, 2478 ha) is located in the province of Córdoba (Argentina). The silverside Odontesthes bonariensis is the dominant and most important sport fishing species in this reservoir and sustains a strong socioeconomic activity. The study aims were description of the fo...

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Autores principales:	Bethular, A., Mancini, M., Salinas, V., Echaniz, Santiago Andrés, Vignatti, A., Larriestra, A.
Formato:	Articulo
Lenguaje:	Español
Publicado:	2014
Materias:	Ciencias Naturales Odontesthes bonariensis; body condition; feeding; San Roque reservoir ictiología Córdoba (Argentina) Peces condición corporal; alimentación; embalse San Roque
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/52936 http://www.bacuatica.org/index.php/bacuatica/article/view/22/10
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-52936
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Español
topic	Ciencias Naturales Odontesthes bonariensis; body condition; feeding; San Roque reservoir ictiología Córdoba (Argentina) Peces condición corporal; alimentación; embalse San Roque
spellingShingle	Ciencias Naturales Odontesthes bonariensis; body condition; feeding; San Roque reservoir ictiología Córdoba (Argentina) Peces condición corporal; alimentación; embalse San Roque Bethular, A. Mancini, M. Salinas, V. Echaniz, Santiago Andrés Vignatti, A. Larriestra, A. Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
topic_facet	Ciencias Naturales Odontesthes bonariensis; body condition; feeding; San Roque reservoir ictiología Córdoba (Argentina) Peces condición corporal; alimentación; embalse San Roque
description	San Roque reservoir (31º22`S, 64º27´W, 2478 ha) is located in the province of Córdoba (Argentina). The silverside Odontesthes bonariensis is the dominant and most important sport fishing species in this reservoir and sustains a strong socioeconomic activity. The study aims were description of the food items, the seasonal variation of the parasitic burden and prevalence, as well as the body condition in O. bonariensis. A total of 242 silversides specimens were caught during the four study seasons. Food items were assessed by means of index of categorization (ICI). The degree of parasitism was measured using prevalence, intensity and density. The weight-length relationship and relative condition factor were calculated. Digestive contents revealed the presence of Copepoda and Cladocera, essentially dominated by Bosmina huaronensis over Bosmina longirostris. The presence of phytoplankton and Palaemonetes sp. reproduces findings reported for other environments. The silverside’s body condition showed significant differences between year seasons (P<0.001), being better in winter and spring. Lernaea cyprinacea was observed around the dorsal and pectoral fins, and Cangatiella macdonaghi in the digestive content. Both parasites were highly prevalent during summer months.
format	Articulo Articulo
author	Bethular, A. Mancini, M. Salinas, V. Echaniz, Santiago Andrés Vignatti, A. Larriestra, A.
author_facet	Bethular, A. Mancini, M. Salinas, V. Echaniz, Santiago Andrés Vignatti, A. Larriestra, A.
author_sort	Bethular, A.
title	Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
title_short	Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
title_full	Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
title_fullStr	Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
title_full_unstemmed	Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
title_sort	alimentación, condición corporal y principales parásitos del pejerrey (<i>odontotesthes bonaeriensis</i>) del embalse san roque (argentina)
publishDate	2014
url	http://sedici.unlp.edu.ar/handle/10915/52936 http://www.bacuatica.org/index.php/bacuatica/article/view/22/10
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Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)

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