Experimental infection of brown trout, Salmo trutta L., using a Finnish Yersinia ruckeri isolate
Identifieur interne : 000981 ( Istex/Corpus ); précédent : 000980; suivant : 000982Experimental infection of brown trout, Salmo trutta L., using a Finnish Yersinia ruckeri isolate
Auteurs : Jaana Hietala ; E. Tellervo Valtonen ; Tuula AaltonenSource :
- Aquaculture [ 0044-8486 ] ; 1995.
Abstract
The pathogenicity of a Finnish Yersinia ruckeri isolate to 1-year-old brown trout was tested using both immersion and injection mode of infection. The occurrence of bacteria and antibody production were monitored for up to 25 days. No disease signs or mortality due to Y. ruckeri occurred in the immersion experiment where the fish were further stressed with Ichthyophthirius multifiliis, but Y. ruckeri was isolated from certain organs in half of the fish. The intestine, kidney and spleen were the most favoured sites of infection, only one fish having bacteria in the liver. The injection of brown trout caused 100% Y. ruckeri infection and some mortality was recorded during the first week post infection. All dead fish exhibited signs of bacterial infection but none had inflammation around the mouth. Antibodies against Y. ruckeri were produced in both the groups subjected to immersion and that subjected to injection but the production was higher in the injected fish. These results confirm earlier findings that the Finnish Y. ruckeri is less pathogenic than, for example, Y. ruckeri in USA, and indicate that more experimental studies are needed to examine the significance of geographical variation of Y. ruckeri strains in terms of their pathogenicity.
Url:
DOI: 10.1016/0044-8486(95)01047-5
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Tellervo Valtonen</name><affiliation><mods:affiliation>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</mods:affiliation></affiliation></author><author><name sortKey="Aaltonen, Tuula" sort="Aaltonen, Tuula" uniqKey="Aaltonen T" first="Tuula" last="Aaltonen">Tuula Aaltonen</name><affiliation><mods:affiliation>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Aquaculture</title><title level="j" type="abbrev">AQUA</title><idno type="ISSN">0044-8486</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1995">1995</date><biblScope unit="volume">136</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="11">11</biblScope><biblScope unit="page" to="20">20</biblScope></imprint><idno type="ISSN">0044-8486</idno></series><idno type="istex">119496E93DC3D748E79D9D1B0FAE435CE704A6C5</idno><idno type="DOI">10.1016/0044-8486(95)01047-5</idno><idno type="PII">0044-8486(95)01047-5</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0044-8486</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The pathogenicity of a Finnish Yersinia ruckeri isolate to 1-year-old brown trout was tested using both immersion and injection mode of infection. The occurrence of bacteria and antibody production were monitored for up to 25 days. No disease signs or mortality due to Y. ruckeri occurred in the immersion experiment where the fish were further stressed with Ichthyophthirius multifiliis, but Y. ruckeri was isolated from certain organs in half of the fish. The intestine, kidney and spleen were the most favoured sites of infection, only one fish having bacteria in the liver. The injection of brown trout caused 100% Y. ruckeri infection and some mortality was recorded during the first week post infection. All dead fish exhibited signs of bacterial infection but none had inflammation around the mouth. Antibodies against Y. ruckeri were produced in both the groups subjected to immersion and that subjected to injection but the production was higher in the injected fish. These results confirm earlier findings that the Finnish Y. ruckeri is less pathogenic than, for example, Y. ruckeri in USA, and indicate that more experimental studies are needed to examine the significance of geographical variation of Y. ruckeri strains in terms of their pathogenicity.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Jaana Hietala</name><affiliations><json:string>Department of Biology, University of Turku, Turku, Finland</json:string></affiliations></json:item><json:item><name>E.Tellervo Valtonen</name><affiliations><json:string>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</json:string></affiliations></json:item><json:item><name>Tuula Aaltonen</name><affiliations><json:string>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Diseases, parasites and predators</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>The pathogenicity of a Finnish Yersinia ruckeri isolate to 1-year-old brown trout was tested using both immersion and injection mode of infection. The occurrence of bacteria and antibody production were monitored for up to 25 days. No disease signs or mortality due to Y. ruckeri occurred in the immersion experiment where the fish were further stressed with Ichthyophthirius multifiliis, but Y. ruckeri was isolated from certain organs in half of the fish. The intestine, kidney and spleen were the most favoured sites of infection, only one fish having bacteria in the liver. The injection of brown trout caused 100% Y. ruckeri infection and some mortality was recorded during the first week post infection. All dead fish exhibited signs of bacterial infection but none had inflammation around the mouth. Antibodies against Y. ruckeri were produced in both the groups subjected to immersion and that subjected to injection but the production was higher in the injected fish. 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The occurrence of bacteria and antibody production were monitored for up to 25 days. No disease signs or mortality due to Y. ruckeri occurred in the immersion experiment where the fish were further stressed with Ichthyophthirius multifiliis, but Y. ruckeri was isolated from certain organs in half of the fish. The intestine, kidney and spleen were the most favoured sites of infection, only one fish having bacteria in the liver. The injection of brown trout caused 100% Y. ruckeri infection and some mortality was recorded during the first week post infection. All dead fish exhibited signs of bacterial infection but none had inflammation around the mouth. Antibodies against Y. ruckeri were produced in both the groups subjected to immersion and that subjected to injection but the production was higher in the injected fish. These results confirm earlier findings that the Finnish Y. ruckeri is less pathogenic than, for example, Y. ruckeri in USA, and indicate that more experimental studies are needed to examine the significance of geographical variation of Y. ruckeri strains in terms of their pathogenicity.</p></abstract><textClass><keywords scheme="keyword"><list><head>article-category</head><item><term>Diseases, parasites and predators</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1995">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/119496E93DC3D748E79D9D1B0FAE435CE704A6C5/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>AQUA</jid><aid>95010475</aid><ce:pii>0044-8486(95)01047-5</ce:pii><ce:doi>10.1016/0044-8486(95)01047-5</ce:doi><ce:copyright type="unknown" year="1995"></ce:copyright><ce:doctopics><ce:doctopic><ce:text>Diseases, parasites and predators</ce:text></ce:doctopic></ce:doctopics></item-info><head><ce:title>Experimental infection of brown trout, <ce:italic>Salmo trutta</ce:italic> L., using a Finnish <ce:italic>Yersinia ruckeri</ce:italic> isolate</ce:title><ce:author-group><ce:author><ce:given-name>Jaana</ce:given-name><ce:surname>Hietala</ce:surname><ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>E.Tellervo</ce:given-name><ce:surname>Valtonen</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Tuula</ce:given-name><ce:surname>Aaltonen</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>Department of Biology, University of Turku, Turku, Finland</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Corresponding author.</ce:text></ce:correspondence></ce:author-group><ce:date-accepted day="26" month="4" year="1995"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>The pathogenicity of a Finnish <ce:italic>Yersinia ruckeri</ce:italic> isolate to 1-year-old brown trout was tested using both immersion and injection mode of infection. The occurrence of bacteria and antibody production were monitored for up to 25 days. No disease signs or mortality due to <ce:italic>Y. ruckeri</ce:italic> occurred in the immersion experiment where the fish were further stressed with <ce:italic>Ichthyophthirius multifiliis</ce:italic>, but <ce:italic>Y. ruckeri</ce:italic> was isolated from certain organs in half of the fish. The intestine, kidney and spleen were the most favoured sites of infection, only one fish having bacteria in the liver. The injection of brown trout caused 100% <ce:italic>Y. ruckeri</ce:italic> infection and some mortality was recorded during the first week post infection. All dead fish exhibited signs of bacterial infection but none had inflammation around the mouth. Antibodies against <ce:italic>Y. ruckeri</ce:italic> were produced in both the groups subjected to immersion and that subjected to injection but the production was higher in the injected fish. These results confirm earlier findings that the Finnish <ce:italic>Y. ruckeri</ce:italic> is less pathogenic than, for example, <ce:italic>Y. ruckeri</ce:italic> in USA, and indicate that more experimental studies are needed to examine the significance of geographical variation of <ce:italic>Y. ruckeri</ce:italic> strains in terms of their pathogenicity.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Experimental infection of brown trout, Salmo trutta L., using a Finnish Yersinia ruckeri isolate</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Experimental infection of brown trout,</title></titleInfo><name type="personal"><namePart type="given">Jaana</namePart><namePart type="family">Hietala</namePart><affiliation>Department of Biology, University of Turku, Turku, Finland</affiliation><description>Corresponding author.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E.Tellervo</namePart><namePart type="family">Valtonen</namePart><affiliation>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Tuula</namePart><namePart type="family">Aaltonen</namePart><affiliation>Department of Biology, University of Jyväskylä, Jyäskylä, Finland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1995</dateIssued><copyrightDate encoding="w3cdtf">1995</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">The pathogenicity of a Finnish Yersinia ruckeri isolate to 1-year-old brown trout was tested using both immersion and injection mode of infection. The occurrence of bacteria and antibody production were monitored for up to 25 days. No disease signs or mortality due to Y. ruckeri occurred in the immersion experiment where the fish were further stressed with Ichthyophthirius multifiliis, but Y. ruckeri was isolated from certain organs in half of the fish. The intestine, kidney and spleen were the most favoured sites of infection, only one fish having bacteria in the liver. The injection of brown trout caused 100% Y. ruckeri infection and some mortality was recorded during the first week post infection. All dead fish exhibited signs of bacterial infection but none had inflammation around the mouth. Antibodies against Y. ruckeri were produced in both the groups subjected to immersion and that subjected to injection but the production was higher in the injected fish. These results confirm earlier findings that the Finnish Y. ruckeri is less pathogenic than, for example, Y. ruckeri in USA, and indicate that more experimental studies are needed to examine the significance of geographical variation of Y. ruckeri strains in terms of their pathogenicity.</abstract><subject><genre>article-category</genre><topic>Diseases, parasites and predators</topic></subject><relatedItem type="host"><titleInfo><title>Aquaculture</title></titleInfo><titleInfo type="abbreviated"><title>AQUA</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">19951101</dateIssued></originInfo><identifier type="ISSN">0044-8486</identifier><identifier type="PII">S0044-8486(00)X0013-0</identifier><part><date>19951101</date><detail type="volume"><number>136</number><caption>vol.</caption></detail><detail type="issue"><number>1–2</number><caption>no.</caption></detail><extent unit="issue pages"><start>1</start><end>194</end></extent><extent unit="pages"><start>11</start><end>20</end></extent></part></relatedItem><identifier type="istex">119496E93DC3D748E79D9D1B0FAE435CE704A6C5</identifier><identifier type="DOI">10.1016/0044-8486(95)01047-5</identifier><identifier type="PII">0044-8486(95)01047-5</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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