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[{"key": "dc.contributor.advisor", "value": "Eloranta, Antti", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Kiljunen, Mikko", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Paterson, Rachel", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Gr\u00f6nberg, Nelli", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-06-12T06:48:36Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-06-12T06:48:36Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/95771", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Resource polymorphism is common in salmonid fishes and often increases diversity\nof the population, for instance by supporting individual variation in diet, habitat\nuse and growth. Brown trout (Salmo trutta) can exhibit different life history traits\noften related to adaptation to littoral and pelagic resource use or to freshwater and\nmarine feeding habits. Brown trout can also show variation in body colour, but the\necological basis for colour morphs, such as difference in trophic niches, remains\npoorly understood. Carbon, nitrogen and sulphur stable isotope analyses were\nconducted to investigate potential differences in long-term assimilated diets of three\nbrown trout morphs that differed in body colour (brown, intermediate, silver).\nBased on the results of isotopic mixing models, the main prey items in all morphs\nwere zooplankton and three-spined sticklebacks (Gasterosteus aculeatus). There were\nsize related niche shifts from pelagic zooplankton diet to sticklebacks and from\nfreshwater resources towards marine food sources in all colour morphs at the\nnatural lengths of 250\u2013300 mm except brown morph switched to marine food\nsources at the natural length of 400mm. Based on results of isotopic variation, the\nniche regions were overlapping among all colour morphs and silver morph had\nsmallest niche size, however it was not significantly different. Understanding\nresource polymorphism within a population gives us insight to the possible harms\nthe morphs in the population might face due to possible environmental changes.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Lohikalojen resurssien k\u00e4yt\u00f6ss\u00e4 on yleisesti vaihtelua, mik\u00e4 lis\u00e4\u00e4 populaation\nmonimuotoisuutta esimerkiksi lis\u00e4\u00e4m\u00e4ll\u00e4 vaihtelua yksil\u00f6iden ruokavaliossa,\nelinymp\u00e4rist\u00f6n k\u00e4yt\u00f6ss\u00e4 ja kasvussa. Taimenilla on erilaisia elinkierto-\nominaisuuksia usein liittyen sopeutumiseen litoraalin benttisten ja pelagiaalin\nplanktisten ravintokohteiden sek\u00e4 makeanveden ja meriveden elinymp\u00e4rist\u00f6n\nk\u00e4ytt\u00f6\u00f6n. Taimenten ihonv\u00e4rityksess\u00e4 voi olla vaihtelua, mutta v\u00e4rimuotojen\nekologisista lokeroista ei tiedet\u00e4 paljoa. Taimenen v\u00e4rimuotojen (ruskea, v\u00e4limuoto\nja hopea) ravinnonk\u00e4ytt\u00f6\u00e4 tutkittiin norjalaisessa rannikkovesist\u00f6ss\u00e4 hiilen, typen\nja rikin vakaiden isotooppien avulla. Taimenten p\u00e4\u00e4asialliset ravintokohteet olivat\nel\u00e4inplanktonit ja kolmipiikit (Gasterosteus aculeatus). Kaikki muodot osoittivat\nkasvunaikaisia ravinnonk\u00e4yt\u00f6n muutoksia pelagiaalin el\u00e4inplanktonista\nkolmipiikkeihin ja makeanveden ravintokohteista meriravintokohteisiin 250\u2013300\nmm pituisina paitsi ruskea muoto siirtyi meriravintokohteisiin 400 mm pituisena.\nVaihtelu eri muotojen vakaiden isotooppien arvoissa osoitti, ett\u00e4 eri muotojen\nekologiset lokerot olivat p\u00e4\u00e4llekk\u00e4iset ja niiden ekologisten lokeroiden koissa ei\nollut merkitt\u00e4vi\u00e4 eroja, vaikka hopealla muodolla oli muodoista pienin ekologinen\nlokero. Populaation resurssien k\u00e4yt\u00f6n laajuus auttaa ymm\u00e4rt\u00e4m\u00e4\u00e4n mahdollista\nvaaroista, joita eri muodot voivat kohdata mahdollisten ymp\u00e4rist\u00f6nmuutoksien\nseurauksena.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2024-06-12T06:48:36Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-06-12T06:48:36Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "30", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "brown trout", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "stable isotopes", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "resource polymorphism", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Resource use of brown trout (Salmo trutta) colour morphs in a Norwegian coastal watercourse", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202406124538", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Aquatic sciences", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Akvaattiset tieteet", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4012", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fenotyyppi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "taimen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "isotoopit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "phenotype", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "trout", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "isotopes", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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