Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks
The viability of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) culture is being challenged progressively by global warming. Previous trials with Australian and Japanese rainbow trout lines suggested that improvements in thermal performance may be possible. Here, we hypothesized that strain-relat...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2018-02-01
|
| Series: | Aquaculture Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513417301023 |
| _version_ | 1818845868512509952 |
|---|---|
| author | Sonia Alejandra Crichigno Leandro Aníbal Becker Mabel Orellana Rodrigo Larraza Guillermo Mirenna Miguel Angel Battini Víctor Enrique Cussac |
| author_facet | Sonia Alejandra Crichigno Leandro Aníbal Becker Mabel Orellana Rodrigo Larraza Guillermo Mirenna Miguel Angel Battini Víctor Enrique Cussac |
| author_sort | Sonia Alejandra Crichigno |
| collection | DOAJ |
| description | The viability of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) culture is being challenged progressively by global warming. Previous trials with Australian and Japanese rainbow trout lines suggested that improvements in thermal performance may be possible. Here, we hypothesized that strain-related differences in physiological response to temperature exist between a north Patagonian hatchery stock (CENSALBA), a Neotropical one (Criadero Boca de Río), and a thermal stream (Valcheta) population of wild introduced rainbow trout. This was tested by comparing, at 20 °C, the thermal preference, specific metabolic rate, thermal tolerance, growth, and condition on juveniles of the three strains, and on a Valcheta stream male x CENSALBA female F1 cross. Preferred temperature (PT) and loss of equilibrium temperature (LET, a measure of thermal tolerance) of Valcheta stream and F1 were significantly higher than those of CENSALBA, and the average PTs of Valcheta stream and F1 were higher than the 95% confidence interval of available reference data for rainbow trout. These results suggest that the F1, reared under standard hatchery conditions and selected by growth and thermal preference, presents higher thermal preference and higher thermal tolerance than the current CENSALBA hatchery stock. Introduction of this naturally adapted strain to hatchery stocks would likely result in the improvement of their temperature resistance to warmer waters. Current studies on adults of this F1 generation are underway. |
| first_indexed | 2024-12-19T05:36:30Z |
| format | Article |
| id | doaj.art-bc76066cf51a4927b26a73e5521da5d7 |
| institution | Directory Open Access Journal |
| issn | 2352-5134 |
| language | English |
| last_indexed | 2024-12-19T05:36:30Z |
| publishDate | 2018-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj.art-bc76066cf51a4927b26a73e5521da5d72022-12-21T20:34:07ZengElsevierAquaculture Reports2352-51342018-02-019C828810.1016/j.aqrep.2017.11.001Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocksSonia Alejandra Crichigno0Leandro Aníbal Becker1Mabel Orellana2Rodrigo Larraza3Guillermo Mirenna4Miguel Angel Battini5Víctor Enrique Cussac6Instituto Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Universidad Nacional del Comahue (UNCO) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Quintral 1250, Bariloche, 8400 Río Negro, ArgentinaInstituto Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Universidad Nacional del Comahue (UNCO) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Quintral 1250, Bariloche, 8400 Río Negro, ArgentinaCentro de Salmonicultura Bariloche (CENSALBA), Universidad Nacional del Comahue (UNCO), ArgentinaCentro de Salmonicultura Bariloche (CENSALBA), Universidad Nacional del Comahue (UNCO), ArgentinaCentro de Salmonicultura Bariloche (CENSALBA), Universidad Nacional del Comahue (UNCO), ArgentinaInstituto Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Universidad Nacional del Comahue (UNCO) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Quintral 1250, Bariloche, 8400 Río Negro, ArgentinaInstituto Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Universidad Nacional del Comahue (UNCO) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Quintral 1250, Bariloche, 8400 Río Negro, ArgentinaThe viability of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) culture is being challenged progressively by global warming. Previous trials with Australian and Japanese rainbow trout lines suggested that improvements in thermal performance may be possible. Here, we hypothesized that strain-related differences in physiological response to temperature exist between a north Patagonian hatchery stock (CENSALBA), a Neotropical one (Criadero Boca de Río), and a thermal stream (Valcheta) population of wild introduced rainbow trout. This was tested by comparing, at 20 °C, the thermal preference, specific metabolic rate, thermal tolerance, growth, and condition on juveniles of the three strains, and on a Valcheta stream male x CENSALBA female F1 cross. Preferred temperature (PT) and loss of equilibrium temperature (LET, a measure of thermal tolerance) of Valcheta stream and F1 were significantly higher than those of CENSALBA, and the average PTs of Valcheta stream and F1 were higher than the 95% confidence interval of available reference data for rainbow trout. These results suggest that the F1, reared under standard hatchery conditions and selected by growth and thermal preference, presents higher thermal preference and higher thermal tolerance than the current CENSALBA hatchery stock. Introduction of this naturally adapted strain to hatchery stocks would likely result in the improvement of their temperature resistance to warmer waters. Current studies on adults of this F1 generation are underway.http://www.sciencedirect.com/science/article/pii/S2352513417301023Climate changeGrowthOncorhynchus mykissPreferred temperatureThermal tolerance |
| spellingShingle | Sonia Alejandra Crichigno Leandro Aníbal Becker Mabel Orellana Rodrigo Larraza Guillermo Mirenna Miguel Angel Battini Víctor Enrique Cussac Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks Aquaculture Reports Climate change Growth Oncorhynchus mykiss Preferred temperature Thermal tolerance |
| title | Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks |
| title_full | Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks |
| title_fullStr | Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks |
| title_full_unstemmed | Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks |
| title_short | Rainbow trout adaptation to a warmer Patagonia and its potential to increase temperature tolerance in cultured stocks |
| title_sort | rainbow trout adaptation to a warmer patagonia and its potential to increase temperature tolerance in cultured stocks |
| topic | Climate change Growth Oncorhynchus mykiss Preferred temperature Thermal tolerance |
| url | http://www.sciencedirect.com/science/article/pii/S2352513417301023 |
| work_keys_str_mv | AT soniaalejandracrichigno rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks AT leandroanibalbecker rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks AT mabelorellana rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks AT rodrigolarraza rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks AT guillermomirenna rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks AT miguelangelbattini rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks AT victorenriquecussac rainbowtroutadaptationtoawarmerpatagoniaanditspotentialtoincreasetemperaturetoleranceinculturedstocks |