Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio

Autores
Berasain, Gustavo E.; Velasco, Claudia A. M.; Mir, F.; Padín, D. A.
Año de publicación
2008
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this work was the obtainment of Odontesthes bonariensis eggs from broodstocks reared in captivity since them hatched. The experiment took place from September 2005 to April 2006 during this time fish were kept in two circular tanks of 20 m2 (A1 and A2), with water salinity of 9 g/l and 3,6 times/day water volume changes. Water temperature varied from 17 to 22,5ºC. Broodstocks were fed with artificial food twice a day at 1% of body weight/day. The initial densities were 20,4 (A1) and 18,7 (A2) ind/m2. The male/female relationship was 1,02 (A1) and 0,86 (A2). Mean standard length of A1 reproducer was 293,1mm and 286,3mm in A2. Mean weight was 322 g (A1) and 306,4 g (A2). From A1 7.868.550 eggs with a 74,31 % fertilization rate and 6.061.790 with 75,11 % fertilization rate in A2 were obtained. During the first fifteenth of October the greater percentage of eggs was collected 25.01 % in A1 and 29.14 in A2. Each A1 female spawned 39.942 eggs in average and 32.208 in A2. Reproducers survival rates were 96,98 % and 94,66 % (A1 and A2). Finally we think that massive egg production with a high fertilization rate is possible from high densities of reproducers reared in captivity.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
pejerrey
Acuicultura
reproductores
producción intensiva
ovas
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:10915/67846
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/67846
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverioBerasain, Gustavo E.Velasco, Claudia A. M.Mir, F.Padín, D. A.Ciencias NaturalespejerreyAcuiculturareproductoresproducción intensivaovasThe aim of this work was the obtainment of Odontesthes bonariensis eggs from broodstocks reared in captivity since them hatched. The experiment took place from September 2005 to April 2006 during this time fish were kept in two circular tanks of 20 m2 (A1 and A2), with water salinity of 9 g/l and 3,6 times/day water volume changes. Water temperature varied from 17 to 22,5ºC. Broodstocks were fed with artificial food twice a day at 1% of body weight/day. The initial densities were 20,4 (A1) and 18,7 (A2) ind/m2. The male/female relationship was 1,02 (A1) and 0,86 (A2). Mean standard length of A1 reproducer was 293,1mm and 286,3mm in A2. Mean weight was 322 g (A1) and 306,4 g (A2). From A1 7.868.550 eggs with a 74,31 % fertilization rate and 6.061.790 with 75,11 % fertilization rate in A2 were obtained. During the first fifteenth of October the greater percentage of eggs was collected 25.01 % in A1 and 29.14 in A2. Each A1 female spawned 39.942 eggs in average and 32.208 in A2. Reproducers survival rates were 96,98 % and 94,66 % (A1 and A2). Finally we think that massive egg production with a high fertilization rate is possible from high densities of reproducers reared in captivity.Facultad de Ciencias Naturales y Museo2008-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf11-16http://sedici.unlp.edu.ar/handle/10915/67846spainfo:eu-repo/semantics/altIdentifier/issn/0326-1638info: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:UNLP2025-09-29T11:10:26Zoai:sedici.unlp.edu.ar:10915/67846Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:10:26.392SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
title Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
spellingShingle Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
Berasain, Gustavo E.
Ciencias Naturales
pejerrey
Acuicultura
reproductores
producción intensiva
ovas
title_short Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
title_full Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
title_fullStr Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
title_full_unstemmed Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
title_sort Producción intensiva de ovas embrionadas de pejerrey (<i>Odontesthes bonariensis</i>) a partir de reproductores mantenidos en cautiverio
dc.creator.none.fl_str_mv Berasain, Gustavo E.
Velasco, Claudia A. M.
Mir, F.
Padín, D. A.
author Berasain, Gustavo E.
author_facet Berasain, Gustavo E.
Velasco, Claudia A. M.
Mir, F.
Padín, D. A.
author_role author
author2 Velasco, Claudia A. M.
Mir, F.
Padín, D. A.
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
pejerrey
Acuicultura
reproductores
producción intensiva
ovas
topic Ciencias Naturales
pejerrey
Acuicultura
reproductores
producción intensiva
ovas
dc.description.none.fl_txt_mv The aim of this work was the obtainment of Odontesthes bonariensis eggs from broodstocks reared in captivity since them hatched. The experiment took place from September 2005 to April 2006 during this time fish were kept in two circular tanks of 20 m2 (A1 and A2), with water salinity of 9 g/l and 3,6 times/day water volume changes. Water temperature varied from 17 to 22,5ºC. Broodstocks were fed with artificial food twice a day at 1% of body weight/day. The initial densities were 20,4 (A1) and 18,7 (A2) ind/m2. The male/female relationship was 1,02 (A1) and 0,86 (A2). Mean standard length of A1 reproducer was 293,1mm and 286,3mm in A2. Mean weight was 322 g (A1) and 306,4 g (A2). From A1 7.868.550 eggs with a 74,31 % fertilization rate and 6.061.790 with 75,11 % fertilization rate in A2 were obtained. During the first fifteenth of October the greater percentage of eggs was collected 25.01 % in A1 and 29.14 in A2. Each A1 female spawned 39.942 eggs in average and 32.208 in A2. Reproducers survival rates were 96,98 % and 94,66 % (A1 and A2). Finally we think that massive egg production with a high fertilization rate is possible from high densities of reproducers reared in captivity.
Facultad de Ciencias Naturales y Museo
description The aim of this work was the obtainment of Odontesthes bonariensis eggs from broodstocks reared in captivity since them hatched. The experiment took place from September 2005 to April 2006 during this time fish were kept in two circular tanks of 20 m2 (A1 and A2), with water salinity of 9 g/l and 3,6 times/day water volume changes. Water temperature varied from 17 to 22,5ºC. Broodstocks were fed with artificial food twice a day at 1% of body weight/day. The initial densities were 20,4 (A1) and 18,7 (A2) ind/m2. The male/female relationship was 1,02 (A1) and 0,86 (A2). Mean standard length of A1 reproducer was 293,1mm and 286,3mm in A2. Mean weight was 322 g (A1) and 306,4 g (A2). From A1 7.868.550 eggs with a 74,31 % fertilization rate and 6.061.790 with 75,11 % fertilization rate in A2 were obtained. During the first fifteenth of October the greater percentage of eggs was collected 25.01 % in A1 and 29.14 in A2. Each A1 female spawned 39.942 eggs in average and 32.208 in A2. Reproducers survival rates were 96,98 % and 94,66 % (A1 and A2). Finally we think that massive egg production with a high fertilization rate is possible from high densities of reproducers reared in captivity.
publishDate 2008
dc.date.none.fl_str_mv 2008-11
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/67846
url http://sedici.unlp.edu.ar/handle/10915/67846
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0326-1638
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)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
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instname_str Universidad Nacional de La Plata
instacron_str UNLP
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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