Transmission dynamics of the monogenean Gyrodactylus salaris under seminatural conditions
Tracking individual variation in the dynamics of parasite infections in wild populations is often complicated by lack of knowledge of the epidemiological history of hosts. Whereas the dynamics and development of Gyrodactylus salaris Malmberg, 1957, on Atlantic salmon, Salmo salar L., are known from...
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| Veröffentlicht in: | Journal of fish diseases 2015-06, Vol.38 (6), p.541-550 |
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| creator | Hendrichsen, D K Kristoffersen, R Gjelland, K Ø Knudsen, R Kusterle, S Rikardsen, A H Henriksen, E H Smalås, A Olstad, K |
| description | Tracking individual variation in the dynamics of parasite infections in wild populations is often complicated by lack of knowledge of the epidemiological history of hosts. Whereas the dynamics and development of Gyrodactylus salaris Malmberg, 1957, on Atlantic salmon, Salmo salar L., are known from laboratory studies, knowledge about infection development on individual wild fishes is currently sparse. In this study, the dynamics of an infection of G. salaris on individually marked Atlantic salmon parr was followed in a section of a natural stream. During the 6‐week experiment, the prevalence increased from 3.3 to 60.0%, with an average increase in intensity of 4.1% day−1. Survival analyses showed an initially high probability (93.6%) of staying uninfected by G. salaris, decreasing significantly to 37% after 6 weeks. The results showed that even at subarctic water temperatures and with an initially low risk of infection, the parasite spread rapidly in the Atlantic salmon population, with the capacity to reach 100% prevalence within a short summer season. The study thus track individual infection trajectories of Atlantic salmon living under near‐natural conditions, providing an integration of key population parameters from controlled experiments with the dynamics of the epizootic observed in free‐living living populations. |
| doi_str_mv | 10.1111/jfd.12263 |
| format | Article |
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Whereas the dynamics and development of Gyrodactylus salaris Malmberg, 1957, on Atlantic salmon, Salmo salar L., are known from laboratory studies, knowledge about infection development on individual wild fishes is currently sparse. In this study, the dynamics of an infection of G. salaris on individually marked Atlantic salmon parr was followed in a section of a natural stream. During the 6‐week experiment, the prevalence increased from 3.3 to 60.0%, with an average increase in intensity of 4.1% day−1. Survival analyses showed an initially high probability (93.6%) of staying uninfected by G. salaris, decreasing significantly to 37% after 6 weeks. The results showed that even at subarctic water temperatures and with an initially low risk of infection, the parasite spread rapidly in the Atlantic salmon population, with the capacity to reach 100% prevalence within a short summer season. The study thus track individual infection trajectories of Atlantic salmon living under near‐natural conditions, providing an integration of key population parameters from controlled experiments with the dynamics of the epizootic observed in free‐living living populations.</description><identifier>ISSN: 0140-7775</identifier><identifier>ISSN: 1365-2761</identifier><identifier>EISSN: 1365-2761</identifier><identifier>DOI: 10.1111/jfd.12263</identifier><identifier>PMID: 25039384</identifier><language>eng</language><publisher>England: Blackwell Publishing Ltd</publisher><subject>Animals ; Fish Diseases - mortality ; Fish Diseases - transmission ; fish parasite ; Gyrodactylus salaris ; Host-Parasite Interactions ; infection development ; infection probability ; invasive species ; parasite population dynamics ; Prevalence ; Rivers ; Salmo salar ; Seasons ; Survival Analysis ; Temperament ; Trematoda - physiology ; Trematode Infections - mortality ; Trematode Infections - transmission ; Trematode Infections - veterinary</subject><ispartof>Journal of fish diseases, 2015-06, Vol.38 (6), p.541-550</ispartof><rights>2014 John Wiley & Sons Ltd</rights><rights>2014 John Wiley & Sons Ltd.</rights><rights>Copyright © 2015 John Wiley & Sons Ltd</rights><rights>info:eu-repo/semantics/openAccess</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fjfd.12263$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fjfd.12263$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,780,784,885,1417,26567,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25039384$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hendrichsen, D K</creatorcontrib><creatorcontrib>Kristoffersen, R</creatorcontrib><creatorcontrib>Gjelland, K Ø</creatorcontrib><creatorcontrib>Knudsen, R</creatorcontrib><creatorcontrib>Kusterle, S</creatorcontrib><creatorcontrib>Rikardsen, A H</creatorcontrib><creatorcontrib>Henriksen, E H</creatorcontrib><creatorcontrib>Smalås, A</creatorcontrib><creatorcontrib>Olstad, K</creatorcontrib><title>Transmission dynamics of the monogenean Gyrodactylus salaris under seminatural conditions</title><title>Journal of fish diseases</title><addtitle>J Fish Dis</addtitle><description>Tracking individual variation in the dynamics of parasite infections in wild populations is often complicated by lack of knowledge of the epidemiological history of hosts. Whereas the dynamics and development of Gyrodactylus salaris Malmberg, 1957, on Atlantic salmon, Salmo salar L., are known from laboratory studies, knowledge about infection development on individual wild fishes is currently sparse. In this study, the dynamics of an infection of G. salaris on individually marked Atlantic salmon parr was followed in a section of a natural stream. During the 6‐week experiment, the prevalence increased from 3.3 to 60.0%, with an average increase in intensity of 4.1% day−1. Survival analyses showed an initially high probability (93.6%) of staying uninfected by G. salaris, decreasing significantly to 37% after 6 weeks. The results showed that even at subarctic water temperatures and with an initially low risk of infection, the parasite spread rapidly in the Atlantic salmon population, with the capacity to reach 100% prevalence within a short summer season. The study thus track individual infection trajectories of Atlantic salmon living under near‐natural conditions, providing an integration of key population parameters from controlled experiments with the dynamics of the epizootic observed in free‐living living populations.</description><subject>Animals</subject><subject>Fish Diseases - mortality</subject><subject>Fish Diseases - transmission</subject><subject>fish parasite</subject><subject>Gyrodactylus salaris</subject><subject>Host-Parasite Interactions</subject><subject>infection development</subject><subject>infection probability</subject><subject>invasive species</subject><subject>parasite population dynamics</subject><subject>Prevalence</subject><subject>Rivers</subject><subject>Salmo salar</subject><subject>Seasons</subject><subject>Survival Analysis</subject><subject>Temperament</subject><subject>Trematoda - physiology</subject><subject>Trematode Infections - mortality</subject><subject>Trematode Infections - transmission</subject><subject>Trematode Infections - veterinary</subject><issn>0140-7775</issn><issn>1365-2761</issn><issn>1365-2761</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>3HK</sourceid><recordid>eNqNkU9v1DAQxS0EokvhwBcAS1y4pPX4b3JEhd22VEVCBcTJcmIHvCR2ayeCfHu83dJDT_hiS_69mXnzEHoJ5AjKOd729ggolewRWgGToqJKwmO0IsBJpZQSB-hZzltCQAmQT9EBFYQ1rOYr9P0qmZBHn7OPAdslmNF3GcceTz8dHmOIP1xwJuDNkqI13bQMc8bZDCb5jOdgXcLZjT6YaU5mwF0M1k-lVn6OnvRmyO7F3X2Ivqw_XJ2cVhefNmcn7y6qjnPKKlfmNaBIqwSFGrjrG1VT0fWc21bwVjjR7JAepGNWMkOpk05S1dq2hhbYIXq9r9uViSYfdIjJaCCEKQ2MMFGIt3viOsWb2eVJF7-dGwYTXJyzBtnwpoaawX-gisuGlVUX9M0DdBvnFIrVHcWasmyghXp1R83t6Ky-Tn40adH_EijA8R747Qe33P8D0btodYlW30arz9fvbx9FUe0Vxa77c68w6ZcufZXQ3y43WnyV63P2-aMm7C_DmaKD</recordid><startdate>201506</startdate><enddate>201506</enddate><creator>Hendrichsen, D K</creator><creator>Kristoffersen, R</creator><creator>Gjelland, K Ø</creator><creator>Knudsen, R</creator><creator>Kusterle, S</creator><creator>Rikardsen, A H</creator><creator>Henriksen, E H</creator><creator>Smalås, A</creator><creator>Olstad, K</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7QL</scope><scope>7TN</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H94</scope><scope>H95</scope><scope>H98</scope><scope>H99</scope><scope>L.F</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>7X8</scope><scope>3HK</scope></search><sort><creationdate>201506</creationdate><title>Transmission dynamics of the monogenean Gyrodactylus salaris under seminatural conditions</title><author>Hendrichsen, D K ; 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Whereas the dynamics and development of Gyrodactylus salaris Malmberg, 1957, on Atlantic salmon, Salmo salar L., are known from laboratory studies, knowledge about infection development on individual wild fishes is currently sparse. In this study, the dynamics of an infection of G. salaris on individually marked Atlantic salmon parr was followed in a section of a natural stream. During the 6‐week experiment, the prevalence increased from 3.3 to 60.0%, with an average increase in intensity of 4.1% day−1. Survival analyses showed an initially high probability (93.6%) of staying uninfected by G. salaris, decreasing significantly to 37% after 6 weeks. The results showed that even at subarctic water temperatures and with an initially low risk of infection, the parasite spread rapidly in the Atlantic salmon population, with the capacity to reach 100% prevalence within a short summer season. The study thus track individual infection trajectories of Atlantic salmon living under near‐natural conditions, providing an integration of key population parameters from controlled experiments with the dynamics of the epizootic observed in free‐living living populations.</abstract><cop>England</cop><pub>Blackwell Publishing Ltd</pub><pmid>25039384</pmid><doi>10.1111/jfd.12263</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of fish diseases, 2015-06, Vol.38 (6), p.541-550 |
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| source | MEDLINE; NORA - Norwegian Open Research Archives; Wiley Journals |
| subjects | Animals Fish Diseases - mortality Fish Diseases - transmission fish parasite Gyrodactylus salaris Host-Parasite Interactions infection development infection probability invasive species parasite population dynamics Prevalence Rivers Salmo salar Seasons Survival Analysis Temperament Trematoda - physiology Trematode Infections - mortality Trematode Infections - transmission Trematode Infections - veterinary |
| title | Transmission dynamics of the monogenean Gyrodactylus salaris under seminatural conditions |
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