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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/52936
Ver los metadatos del registro completo
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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 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/52936 |
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http://sedici.unlp.edu.ar/handle/10915/52936 |
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spa |
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dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) |
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