Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity
The freshwater phase of Atlantic salmon Salmo salar L vary between one and eight years. The reduction of the freshwater phase is desirable to reduce freshwater usage, human resources and to increase year round availability of pan-sized salmon. Three trials were conducted to investigate the possibili...
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São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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ftjscielo:oai:scielo:S0103-90162013000100003 2023-05-15T15:30:52+02:00 Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity Gonçalves,José Fernando Magalhães Carraça,Stela Damasceno-Oliveira,Alfredo Vicente,Córalia Costa,Paulo Martins da Lopes-Lima,Manuel Ozório,Rodrigo Otávio de Almeida 2013-02-01 text/html http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000100003 en eng São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" Scientia Agricola v.70 n.1 2013 Atlantic salmon post-smolts development smoltification seawater transfer journal article 2013 ftjscielo 2015-10-26T21:20:45Z The freshwater phase of Atlantic salmon Salmo salar L vary between one and eight years. The reduction of the freshwater phase is desirable to reduce freshwater usage, human resources and to increase year round availability of pan-sized salmon. Three trials were conducted to investigate the possibility of supply the market in a year-round basis, with pan-sized Atlantic salmon Salmo salar L. (250-300 g) in Portugal (southern limit of the natural distribution of this species). This study primarily aimed to compare the osmoregulatory ability and growth of different fish sizes, smolts 1+ (trial 1), 1.5+ (trial 2) and 2+ (trial 3), in freshwater and seawater conditions. Additionally, effects of photoperiod were determined in smolts 1.5+ (trial 2) for both freshwater and seawater groups. The increments in the plasma osmolality and chlorine concentrations after seawater transfer suggest an identical development in the hypo-osmoregulation capacity among the different age classes. In all trials, weight gain was smaller after 30 d of saltwater transfer when compared to fish reared in freshwater. However, the growth depression was temporary. Seawater group showed a compensatory growth in the immediate months, which permitted an improvement in growth rates. At the end of trials there were minor differences on growth performance between freshwater and seawater groups. Specific growth rates varied between 0.7 and 1.0 % day-1, according to the age and /or size and transfer season. Article in Journal/Newspaper Atlantic salmon Salmo salar SciELO Brazil (Scientific Electronic Library Online) |
institution |
Open Polar |
collection |
SciELO Brazil (Scientific Electronic Library Online) |
op_collection_id |
ftjscielo |
language |
English |
topic |
Atlantic salmon post-smolts development smoltification seawater transfer |
spellingShingle |
Atlantic salmon post-smolts development smoltification seawater transfer Gonçalves,José Fernando Magalhães Carraça,Stela Damasceno-Oliveira,Alfredo Vicente,Córalia Costa,Paulo Martins da Lopes-Lima,Manuel Ozório,Rodrigo Otávio de Almeida Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
topic_facet |
Atlantic salmon post-smolts development smoltification seawater transfer |
description |
The freshwater phase of Atlantic salmon Salmo salar L vary between one and eight years. The reduction of the freshwater phase is desirable to reduce freshwater usage, human resources and to increase year round availability of pan-sized salmon. Three trials were conducted to investigate the possibility of supply the market in a year-round basis, with pan-sized Atlantic salmon Salmo salar L. (250-300 g) in Portugal (southern limit of the natural distribution of this species). This study primarily aimed to compare the osmoregulatory ability and growth of different fish sizes, smolts 1+ (trial 1), 1.5+ (trial 2) and 2+ (trial 3), in freshwater and seawater conditions. Additionally, effects of photoperiod were determined in smolts 1.5+ (trial 2) for both freshwater and seawater groups. The increments in the plasma osmolality and chlorine concentrations after seawater transfer suggest an identical development in the hypo-osmoregulation capacity among the different age classes. In all trials, weight gain was smaller after 30 d of saltwater transfer when compared to fish reared in freshwater. However, the growth depression was temporary. Seawater group showed a compensatory growth in the immediate months, which permitted an improvement in growth rates. At the end of trials there were minor differences on growth performance between freshwater and seawater groups. Specific growth rates varied between 0.7 and 1.0 % day-1, according to the age and /or size and transfer season. |
format |
Article in Journal/Newspaper |
author |
Gonçalves,José Fernando Magalhães Carraça,Stela Damasceno-Oliveira,Alfredo Vicente,Córalia Costa,Paulo Martins da Lopes-Lima,Manuel Ozório,Rodrigo Otávio de Almeida |
author_facet |
Gonçalves,José Fernando Magalhães Carraça,Stela Damasceno-Oliveira,Alfredo Vicente,Córalia Costa,Paulo Martins da Lopes-Lima,Manuel Ozório,Rodrigo Otávio de Almeida |
author_sort |
Gonçalves,José Fernando Magalhães |
title |
Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
title_short |
Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
title_full |
Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
title_fullStr |
Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
title_full_unstemmed |
Growth and osmoregulation in Salmo salar L. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
title_sort |
growth and osmoregulation in salmo salar l. juveniles 1+, 1½ + and 2+ reared under restrained salinity |
publisher |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" |
publishDate |
2013 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000100003 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Scientia Agricola v.70 n.1 2013 |
_version_ |
1766361333988589568 |