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dc.contributor.author
Sevastei, Vianel
dc.contributor.author
Painefilú, Julio César
dc.contributor.author
Cussac, Victor Enrique
dc.contributor.author
Crichigno, Sonia Alejandra
dc.date.available
2024-08-23T12:07:01Z
dc.date.issued
2024-06
dc.identifier.citation
Sevastei, Vianel; Painefilú, Julio César; Cussac, Victor Enrique; Crichigno, Sonia Alejandra; Phenotypic differences between non-native populations of rainbow trout Oncorhynchus mykiss in the Argentinean Patagonia; Springer; Hydrobiologia; 6-2024; 1-16
dc.identifier.issn
0018-8158
dc.identifier.uri
http://hdl.handle.net/11336/243043
dc.description.abstract
Patagonia offers several examples of local adaptation in the exotic rainbow trout Oncorhynchus mykiss. Specifically, the Valcheta Stream, characterized by hot spring headwaters and temperate lower reaches, was initially stocked in 1928. Subsequently, progressive upstream expansion, predation by O. mykiss on the critically endangered naked characin Gymnocharacinus bergii, and a rapid adaptation to high water temperature were observed. We documented the life history, breeding, growth, stomach content, Fulton condition factor, hepatosomatic and gonadosomatic indexes, haematological parameters, and body shape of Valcheta rainbow trout, comparing it with a cold-water population of the same origin (Guillelmo Stream). The Valcheta population exhibited an earlier acquisition of sexual maturity and smolt characteristics, along with different growth parameters, including a shorter asymptotic length, higher growth rate, and breeding rooted in winter, contrasting with the spring breeding observed in Guillelmo Stream. Body shape variations were evident between populations and among parr, smolt, and adults. Stomach content volume, condition factor, hepatosomatic and gonadosomatic indexes, and haematology displayed differences related to annual cycle and reproductive adjustments. The Valcheta population of rainbow trout serves as an illustrative example of how fish species can adapt to effects of the climate change through local adjustments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Biological invasions
dc.subject
Contemporary evolution
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Ecological interactions
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Invasive aquatic species
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Rainbow trout
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Thermal-resistance.
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Biología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Phenotypic differences between non-native populations of rainbow trout Oncorhynchus mykiss in the Argentinean Patagonia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-20T10:46:45Z
dc.identifier.eissn
1573-5117
dc.journal.pagination
1-16
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Sevastei, Vianel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales; Argentina
dc.description.fil
Fil: Painefilú, Julio César. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales; Argentina
dc.description.fil
Fil: Cussac, Victor Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales; Argentina
dc.description.fil
Fil: Crichigno, Sonia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales; Argentina
dc.journal.title
Hydrobiologia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s10750-024-05569-4
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10750-024-05569-4
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