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

Autores
Bethular, A.; Mancini, M.; Salinas, V.; Echaniz, Santiago Andrés; Vignatti, A.; Larriestra, A.
Año de publicación
2014
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Odontesthes bonariensis; body condition; feeding; San Roque reservoir
ictiología
Córdoba (Argentina)
Peces
condición corporal; alimentación; embalse San Roque
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/52936

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spelling Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)Bethular, A.Mancini, M.Salinas, V.Echaniz, Santiago AndrésVignatti, A.Larriestra, A.Ciencias NaturalesOdontesthes bonariensis; body condition; feeding; San Roque reservoirictiologíaCórdoba (Argentina)Pecescondición corporal; alimentación; embalse San RoqueSan 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.Facultad de Ciencias Naturales y Museo2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf59-68http://sedici.unlp.edu.ar/handle/10915/52936spainfo:eu-repo/semantics/altIdentifier/url/http://www.bacuatica.org/index.php/bacuatica/article/view/22/10info:eu-repo/semantics/altIdentifier/issn/1668-4869info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:37:32Zoai:sedici.unlp.edu.ar:10915/52936Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:37:32.34SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
title Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
spellingShingle Alimentación, condición corporal y principales parásitos del pejerrey (<i>Odontotesthes bonaeriensis</i>) del embalse San Roque (Argentina)
Bethular, A.
Ciencias Naturales
Odontesthes bonariensis; body condition; feeding; San Roque reservoir
ictiología
Córdoba (Argentina)
Peces
condición corporal; alimentación; embalse San Roque
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)
dc.creator.none.fl_str_mv Bethular, A.
Mancini, M.
Salinas, V.
Echaniz, Santiago Andrés
Vignatti, A.
Larriestra, A.
author Bethular, A.
author_facet Bethular, A.
Mancini, M.
Salinas, V.
Echaniz, Santiago Andrés
Vignatti, A.
Larriestra, A.
author_role author
author2 Mancini, M.
Salinas, V.
Echaniz, Santiago Andrés
Vignatti, A.
Larriestra, A.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Odontesthes bonariensis; body condition; feeding; San Roque reservoir
ictiología
Córdoba (Argentina)
Peces
condición corporal; alimentación; embalse San Roque
topic Ciencias Naturales
Odontesthes bonariensis; body condition; feeding; San Roque reservoir
ictiología
Córdoba (Argentina)
Peces
condición corporal; alimentación; embalse San Roque
dc.description.none.fl_txt_mv 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.
Facultad de Ciencias Naturales y Museo
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.
publishDate 2014
dc.date.none.fl_str_mv 2014
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
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