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[{"key": "dc.contributor.author", "value": "Rahkonen, Riitta", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-06-24T07:22:20Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-06-24T07:22:20Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "1998", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.isbn", "value": "978-951-39-8773-2", "language": null, "element": "identifier", "qualifier": "isbn", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/76837", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The interaction between Diphyllobothrium dendriticum (Nitzsch 1824) (Cestoda) and trout was studied using the following materials: 1) brown trout Salmo trutta m. lacustris (L.) and sea trout Salmo trutta m. trutta (L.) from the Muonio Fish Farm; 2) brown trout from Lake Inari from 1994 and 1995; and 3) data from four laboratory experiments with D. dendriticum and brown trout. D. dendriticum was found to invade the heart atrium of fish in varying prevalences at the Muonio Fish Farm, Lake Inari and in experiments. In experimental studies the size and migration activity of D. dendriticum in brown trout increased along with water temperature and D. dendriticum infection had an increasing impact on the blood lymphocyte and neutrophil counts. The same dose of intubated infective procercoids caused overdispersed distributions of plerocercoids in brown trout, which was obviously due to individual differences in the susceptibility of fish to D. dendriticum infection. Negative effects on feed intake and growth rate were not observed when fed ad libitum. Mortality induced by a few D. dendriticum was observed in brown trout and sea trout at the Muonio Fish Farm in the early 1990s when plerocercoids penetrated the heart of the fish. Direct or indirect evidence of D. dendriticum induced mortality of the stocked brown trout could not be found in Lake Inari. Moreover, D. dendriticum did not cause a provable mortality in brown trout aged 0+ - 1+ in experimental studies. It is concluded that brown trout normally respond to the harmful effects of D. dendriticum successfully. The observed mortality at Muonio Fish Farm shows, however, that the balance between D. dendriticum and fish may collapse under certain circumstances. These studies indicate that a small proportion (maybe 5-10%) of the trout population will be lost annually to D. dendriticum heart infection, at least in lakes with strong D. dendriticum infection.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Harri Hirvi (hirvi@jyu.fi) on 2021-06-24T07:22:20Z\r\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-06-24T07:22:20Z (GMT). No. of bitstreams: 0\r\n Previous issue date: 1998", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.relation.ispartofseries", "value": "Biological Research Reports from the University of Jyv\u00e4skyl\u00e4", "language": null, "element": "relation", "qualifier": "ispartofseries", "schema": "dc"}, {"key": "dc.relation.haspart", "value": "<b>Artikkeli I:</b> Rahkonen, R., Aalto, J., Koski, P., S\u00e4rkk\u00e4, J. & Juntunen, K. (1996). Cestode\r\nlarvae, Diphyllobothrium dendriticum as a cause of heart disease leading to mortality in hatchery reared sea trout and brown trout. <i>Diseases of Aquatic Organisms. 25, 15-22.</i> DOI: <a href=\"https://doi.org/10.3354/dao025015\"target=\"_blank\"> 10.3354/dao025015</a>", "language": null, "element": "relation", "qualifier": "haspart", "schema": "dc"}, {"key": "dc.relation.haspart", "value": "<b>Artikkeli II:</b> Rahkonen, R. & Koski, P. (1997). Occurrence of cestode larvae in brown\r\ntrout after stocking in a large regulated lake in northern Finland. <i>Diseases of Aquatic Organisms, 31, 55-63.</i> DOI: <a href=\"https://doi.org/10.3354/dao031055\"target=\"_blank\"> 10.3354/dao031055</a>", "language": null, "element": "relation", "qualifier": "haspart", "schema": "dc"}, {"key": "dc.relation.haspart", "value": "<b>Artikkeli III:</b> Rahkonen, R. & Valtonen, E.T. (1997). Infection of brown trout with\r\nDiphyllobothrium dendriticum procercoids. <i>International Journal for Parasitology, 27, 1315-1318.</i> DOI: <a href=\"https://doi.org/10.1016/S0020-7519(97)00123-9\"target=\"_blank\">10.1016/S0020-7519(97)00123-9 </a>", "language": null, "element": "relation", "qualifier": "haspart", "schema": "dc"}, {"key": "dc.relation.haspart", "value": "<b>Artikkeli IV:</b> Rahkonen, R. & Valtonen, E.T. (1998). Role of water temperature on the size,\r\nmigration activity and lethality of Diphyllobothrium dendriticum (Cestoda)\r\nplerocercoids in brown trout Salmo trutta m. lacustris (L.). <i>Annales Zoologici Fennici, 35(2).</i>", "language": null, "element": "relation", "qualifier": "haspart", "schema": "dc"}, {"key": "dc.relation.haspart", "value": "<b>Artikkeli V:</b> Rahkonen, R. & Pasternack, M. Effect of experimental Diphyllobothrium\r\ndendriticum infection on the blood leucocyte pattern of brown trout at two\r\ntemperature levels. <i>Boreal environment research, 3, 381\u2013386.</i> <a href=\"https://core.ac.uk/download/pdf/80069586.pdf\"target=\"_blank\">Full text</a>", "language": null, "element": "relation", "qualifier": "haspart", "schema": "dc"}, {"key": "dc.relation.haspart", "value": "<b>Artikkeli VI:</b> Rahkonen, R., Koskela, J. & Jobling, M. The effect of Diphyllobothrium\r\ndendriticum (Cestoda) infection on feeding and growth of brown trout (Salmo trutta L.). <i>Manuscript (submitted).</i>", "language": null, "element": "relation", "qualifier": "haspart", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.title", "value": "Interactions between a gull tapeworm Diphyllobothrium dendriticum (Cestoda) and trout (Salmo trutta L.)", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "doctoral thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:ISBN:978-951-39-8773-2", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Mathematics and Science", "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.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.type.coar", "value": "http://purl.org/coar/resource_type/c_db06", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.relation.issn", "value": "0356-1062", "language": null, "element": "relation", "qualifier": "issn", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "doctoralThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.date.digitised", "value": "2021", "language": null, "element": "date", "qualifier": "digitised", "schema": "dc"}]
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