{"id":21,"date":"2022-05-20T10:05:18","date_gmt":"2022-05-20T10:05:18","guid":{"rendered":"https:\/\/sites.uef.fi\/rapukamu\/?page_id=21"},"modified":"2023-12-14T16:32:19","modified_gmt":"2023-12-14T16:32:19","slug":"21-2","status":"publish","type":"page","link":"https:\/\/sites.uef.fi\/rapukamu\/21-2\/","title":{"rendered":"T\u00e4pl\u00e4rapu on melkein aina rapuruton kantaja"},"content":{"rendered":"\n<p>Rapurutto levi\u00e4\u00e4 t\u00e4pl\u00e4ravun mukana. L\u00e4hes kaikki suomalaiset t\u00e4pl\u00e4rapukannat ovat rapuruton tartuttamia. Nyrkkis\u00e4\u00e4nt\u00f6n\u00e4 on, ett\u00e4 rapurutto levi\u00e4\u00e4 aina t\u00e4pl\u00e4ravun mukana.<\/p>\n\n\n\n<p>T\u00e4pl\u00e4rapu kantaa yleens\u00e4 eritt\u00e4in tappavaa rapuruttotyyppi\u00e4, PsI-tyyppi\u00e4. T\u00e4m\u00e4 rapuruton muoto tappaa jokiravut yleens\u00e4 viimeist\u00e4\u00e4n viikon, parin sis\u00e4ll\u00e4 tartunnasta.<\/p>\n\n\n\n<p>Havaintoja t\u00e4pl\u00e4rapukantojen romahduksista on tehty sek\u00e4 Suomesta ett\u00e4 Ruotsista jo parin vuosikymmenen ajan ja yhten\u00e4 syyn\u00e4 romahduksiin on t\u00e4pl\u00e4rapujen rapuruttotartunta. Kes\u00e4ll\u00e4 2013 todistettiin laboratoriokokeissa It\u00e4-Suomen yliopistossa, ett\u00e4 my\u00f6s t\u00e4pl\u00e4rapu voi kuolla rapuruttotartuntaan (Aydin ja muut 2014).<\/p>\n\n\n\n<p><strong>T\u00e4pl\u00e4ravun mukana levi\u00e4\u00e4 rapurutto. \u00c4l\u00e4 siirr\u00e4 t\u00e4pl\u00e4rapuja uusiin vesiin.<\/strong><\/p>\n\n\n\n<p>My\u00f6s t\u00e4pl\u00e4rapu voi paremmin, jos rapurutto ei levi\u00e4 ja t\u00e4pl\u00e4rapukanta on terve. Rapuruttoryk\u00e4m\u00e4t laskevat t\u00e4pl\u00e4ravun kaupallista arvoa ja sy\u00f6v\u00e4n osan ravustajan saaliista. Esimerkiksi Saimaan isoista t\u00e4pl\u00e4ravuista v\u00e4hint\u00e4\u00e4n puolet on II laatuluokkaa rapuruton aiheuttamien tummien laikkujen ja saksien puuttumisen vuoksi (Jussila ja muut 2016). T\u00e4pl\u00e4rapu herkistyy my\u00f6s muille taudeille rapuruton saatuaan, esimerkkin\u00e4 pyrst\u00f6jalkatauti. Rapujen istuttaminen on luvanvaraista touhua. Luvattomasta rapujen istuttamisesta voi saada jopa kaksi vuotta vankeutta (kalastusrikos, 48a 2\u00a7 4 jae).<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rapurutto levi\u00e4\u00e4 t\u00e4pl\u00e4ravun mukana. L\u00e4hes kaikki suomalaiset t\u00e4pl\u00e4rapukannat ovat rapuruton tartuttamia. Nyrkkis\u00e4\u00e4nt\u00f6n\u00e4 on, ett\u00e4 rapurutto levi\u00e4\u00e4 aina t\u00e4pl\u00e4ravun mukana. T\u00e4pl\u00e4rapu kantaa yleens\u00e4 eritt\u00e4in tappavaa rapuruttotyyppi\u00e4, PsI-tyyppi\u00e4. T\u00e4m\u00e4 rapuruton muoto tappaa jokiravut yleens\u00e4 viimeist\u00e4\u00e4n viikon, parin sis\u00e4ll\u00e4 tartunnasta. Havaintoja t\u00e4pl\u00e4rapukantojen romahduksista on tehty sek\u00e4 Suomesta ett\u00e4 Ruotsista jo parin vuosikymmenen ajan ja yhten\u00e4 syyn\u00e4 romahduksiin on [&hellip;]<\/p>\n","protected":false},"author":826,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-21","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>T\u00e4pl\u00e4rapu on melkein aina rapuruton kantaja - Rapukamu<\/title>\n<meta name=\"description\" content=\"T\u00e4pl\u00e4ravun kantama rapurutto on eritt\u00e4in tappava sek\u00e4 jokiravulle ett\u00e4 osalle t\u00e4pl\u00e4ravuista. 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