Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols

The pacu (Piaractus mesopotamicus) is a neotropical freshwater fish. It is one of the most important species farmed in areas of the Parana and Paraguay Rivers basins. The effects of different rearing protocols on growth, survival and incidence of skeletal malformations in pacu larvae were analyz...

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Autores principales: Hernández, David Roque, Agüero, Carlos Hernán, Santinón, Juan José, González, Alfredo Oscar, Sánchez, Sebastián
Formato: Artículo
Lenguaje:Inglés
Publicado: Universidade Federal de Santa Maria 2020
Materias:
Piaractus mesopotamicus
Larviculture
Retention
Bone malformations
Larvicultura
Retenção
Malformações ósseas
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/1634
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-1634
record_format dspace
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Piaractus mesopotamicus
Larviculture
Retention
Bone malformations
Larvicultura
Retenção
Malformações ósseas
spellingShingle Piaractus mesopotamicus
Larviculture
Retention
Bone malformations
Larvicultura
Retenção
Malformações ósseas
Hernández, David Roque
Agüero, Carlos Hernán
Santinón, Juan José
González, Alfredo Oscar
Sánchez, Sebastián
Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
topic_facet Piaractus mesopotamicus
Larviculture
Retention
Bone malformations
Larvicultura
Retenção
Malformações ósseas
description The pacu (Piaractus mesopotamicus) is a neotropical freshwater fish. It is one of the most important species farmed in areas of the Parana and Paraguay Rivers basins. The effects of different rearing protocols on growth, survival and incidence of skeletal malformations in pacu larvae were analyzed. A total of six experimental treatments were considered, consisting of: a semiintensive larviculture (LS) in ponds; intensive larviculture (LIn) in laboratory (both LS and LIn until 60 days of life); and mixed larviculture, with 20 days of semi-intensive larviculture into cages in ponds after 14 (L1), 21 (L2), 33 (L3) or 40 (L4) days of laboratory larviculture. At the end of the experimental period, LS larvae showed higher growth rate, with average weight values (2.28g) and total length (TL-48.20mm) statistically higher than the rest (P0.05). L1 to L4 treatments showed intermediate growth values, without differences between them (P0.05), while LIn presented the lowest growth (P0.05). Survival was around 75% in all experimental groups, except LS, that presented a significantly lower value (17.5%, P0.05). Skeletal abnormalities were detected in all experimental treatments, but LIn and L1 presented the lowest incidence. In no case, visible morphological alterations were found. This study shows that prolonging pacu rearing under laboratory conditions at high densities improves temporal availability and survival of juvenile without affecting growth or subsequent osteological development of fish.
format Artículo
author Hernández, David Roque
Agüero, Carlos Hernán
Santinón, Juan José
González, Alfredo Oscar
Sánchez, Sebastián
author_facet Hernández, David Roque
Agüero, Carlos Hernán
Santinón, Juan José
González, Alfredo Oscar
Sánchez, Sebastián
author_sort Hernández, David Roque
title Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
title_short Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
title_full Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
title_fullStr Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
title_full_unstemmed Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
title_sort growth, survival and bone alterations in piaractus mesopotamicus larvae under different rearing protocols
publisher Universidade Federal de Santa Maria
publishDate 2020
url http://repositorio.unne.edu.ar/handle/123456789/1634
work_keys_str_mv AT hernandezdavidroque growthsurvivalandbonealterationsinpiaractusmesopotamicuslarvaeunderdifferentrearingprotocols
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AT santinonjuanjose growthsurvivalandbonealterationsinpiaractusmesopotamicuslarvaeunderdifferentrearingprotocols
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spelling I48-R184-123456789-16342024-10-23T10:48:39Z Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols Hernández, David Roque Agüero, Carlos Hernán Santinón, Juan José González, Alfredo Oscar Sánchez, Sebastián Piaractus mesopotamicus Larviculture Retention Bone malformations Larvicultura Retenção Malformações ósseas The pacu (Piaractus mesopotamicus) is a neotropical freshwater fish. It is one of the most important species farmed in areas of the Parana and Paraguay Rivers basins. The effects of different rearing protocols on growth, survival and incidence of skeletal malformations in pacu larvae were analyzed. A total of six experimental treatments were considered, consisting of: a semiintensive larviculture (LS) in ponds; intensive larviculture (LIn) in laboratory (both LS and LIn until 60 days of life); and mixed larviculture, with 20 days of semi-intensive larviculture into cages in ponds after 14 (L1), 21 (L2), 33 (L3) or 40 (L4) days of laboratory larviculture. At the end of the experimental period, LS larvae showed higher growth rate, with average weight values (2.28g) and total length (TL-48.20mm) statistically higher than the rest (P0.05). L1 to L4 treatments showed intermediate growth values, without differences between them (P0.05), while LIn presented the lowest growth (P0.05). Survival was around 75% in all experimental groups, except LS, that presented a significantly lower value (17.5%, P0.05). Skeletal abnormalities were detected in all experimental treatments, but LIn and L1 presented the lowest incidence. In no case, visible morphological alterations were found. This study shows that prolonging pacu rearing under laboratory conditions at high densities improves temporal availability and survival of juvenile without affecting growth or subsequent osteological development of fish. O pacu (Piaractus mesopotamicus) é um peixe neotropical de água doce. É uma das espécies mais importantes cultivadas em áreas de bacias dos rios Paraná e Paraguay. Foi analisado o efeito da duração da larvicultura intensiva no crescimento, sobrevivência e incidência de malformações ósseas em pacu. Os tratamentos consistiram de uma larvicultura semiintensiva (LS) em viveiros, larvicultura intensiva no laboratório até 60 dias de idade (LIn), ou misto, com 20 dias de larvicultura semiintensiva após 14 (L1), 21 (L2), 33 (L3) e 40 (L4) dias de larvicultura no laboratório. No final da experiência, as larvas do tratamento LS apresentaram maior crescimento, com valores de peso médios (2,28g) e comprimento total (CT-48,20mm) estatisticamente superior ao resto (P0,05). Os tratamentos L1 a L4 apresentaram valores de crescimento intermediários, sem diferença estatística entre eles (P0,05), enquanto LIn apresentaram os menores valores de crescimento estimados (P0,05). A sobrevivência foi estimada em torno de 75% em todos os grupos, com exceção do LS, o qual apresentou um valor mais baixo (17,5%, P0,05). Em todos os tratamentos experimentais, foram detectadas alterações esqueléticas, mas em nenhum caso foi encontrado alteração morfológica visível. O presente estudo mostra que a retenção prolongada de larvas de pacu em alta densidade melhora a disponibilidade temporal e sobrevivência dos juvenis, sem afetar o crescimento ou desenvolvimento osteológico posterior destes. Fil: Hernández, David Roque. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Fil: Agüero, Carlos Hernán. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Fil: Santinón, Juan José. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Fil: González, Alfredo Oscar. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Fil: Sánchez, Sebastián. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. 2020-06-02T22:33:56Z 2020-06-02T22:33:56Z 2015-09 Artículo Hernández, David Roque, et al., 2015. Growth, survival and bone alterations in piaractus mesopotamicus larvae under different rearing protocols. Ciência Rural. Santa María: Universidade Federal de Santa Maria. Centro de ciências rurais, vol. 45, no. 9, p. 1667-1673. ISSN 1678-4596. 0103-8478 http://repositorio.unne.edu.ar/handle/123456789/1634 eng https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901667&lng=en&tlng=en openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 1667-1673 application/pdf Universidade Federal de Santa Maria Ciência Rural, 2015, vol. 45, no. 9, p. 1667-1673.

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