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dc.contributor.authorAlioravainen, Nico
dc.contributor.authorHyvärinen, Pekka
dc.contributor.authorKortet, Raine
dc.contributor.authorHärkönen, Laura
dc.contributor.authorVainikka, Anssi
dc.date.accessioned2020-11-20T06:39:01Z
dc.date.available2020-11-20T06:39:01Z
dc.date.issued2018
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/23785
dc.description.abstractUnintended domestication in hatchery broodstocks reflects a low success of supportive stocking programs. We crossbred adfluvial hatchery-stock brown trout (Salmo trutta) females with males from two non-native adfluvial hatchery strains and a wild but local resident strain to study survival, growth and behaviour of hybrid offspring alternatives. Experimental predation selected for larger size in wild crosses but not in the original hatchery fish. Non-native hatchery crossing reduced the survival in the predation experiment either directly or due to negatively size-selective predation. Wild crosses evaded the areas where predators were present more often than the pure hatchery origin fish in the predation experiment. Our results support an intrinsic anti-predatory behaviour in wild fish and suggest that crosses with resident fish can produce equally growing offspring that are efficient in predation avoidance. Resident, local, wild populations may be a beneficial source for improving the natural-type fitness in broodstocks affected by domestication without natural reproduction.
dc.language.isoenglanti
dc.publisherFinnish Environment Institute
dc.relation.ispartofseriesBOREAL ENVIRONMENT RESEARCH
dc.relation.urihttp://www.borenv.net/BER/archive/ber231-6.htm
dc.rightsCC BY http://creativecommons.org/licenses/by/4.0/
dc.titleSurvival of crossbred brown trout under experimental pike predation and stocking in the wild
dc.description.versionpublished version
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toiminta
uef.solecris.id57759248en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© 2018 Authors
dc.description.reviewstatuspeerReviewed
dc.format.pagerange267-281
dc.publisher.countrySuomi
dc.relation.issn1239-6095
dc.relation.volume23
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessOpen access -julkaisukanavassa ilmestynyt julkaisu


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