{"id":10172,"date":"2021-06-17T13:25:35","date_gmt":"2021-06-17T11:25:35","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/?p=10172"},"modified":"2021-06-17T13:41:34","modified_gmt":"2021-06-17T11:41:34","slug":"visita-al-centre-de-reproduccio-del-cranc-de-riu-de-potes-blanques","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/general\/visita-al-centre-de-reproduccio-del-cranc-de-riu-de-potes-blanques\/","title":{"rendered":"Visita al Centre de Reproducci\u00f3 del cranc de riu de potes blanques"},"content":{"rendered":"<p style=\"text-align: justify;\">Avui hem visitat el Centre de Reproducci\u00f3 del cranc de riu de potes blanques situat dins el Parc Natural de la Zona Volc\u00e0nica de la Garrotxa. El principal objectiu d&#8217;aquest centre \u00e9s la cria en captivitat d&#8217;individus de <strong>cranc de riu aut\u00f2cton &#8220;<em>Austropotamobius pallipes&#8221;\u00a0<\/em><\/strong>amb la finalitat de poder fer repoblacions o reintroduccions en diferents cursos fluvials de la Garrotxa on s&#8217;hi han detectat aquesta esp\u00e8cie.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-10177 size-medium\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0005-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0005-300x169.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0005-768x432.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0005-1024x576.jpg 1024w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0005.jpg 1416w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p style=\"text-align: justify;\">El cranc de riu aut\u00f2cton ha patit una important regressi\u00f3 als rius catalans a causa de les diverses introduccions que hi hagut d&#8217;esp\u00e8cies de crancs al\u00b7l\u00f2ctons, amb finalitats pesqueres i aliment\u00e0ries. En particular, les esp\u00e8cies de crancs al\u00b7l\u00f2ctons que afecten als rius catalans s\u00f3n principalment: <strong>el cranc roig <em>&#8220;Procambarus clarkii&#8221;<\/em>,<\/strong> el <strong>cranc senyal <em>&#8220;Pacifastacus leniusculus&#8221;<\/em><\/strong> i el <strong>cranc dels canals <em>&#8220;Orconec<\/em><\/strong><strong><em>tes limosus&#8221;<\/em>.\u00a0<\/strong>Aquestes tres esp\u00e8cies de cranc americ\u00e0 s\u00f3n portadores d&#8217;un fong anomenat <em>Aphanomyces as<\/em><em>taci\u00a0<\/em>que afecta molt negativament a la nostra esp\u00e8cie. L&#8217;afanomito<span style=\"font-family: inherit; font-size: 1em;\">si o pesta del cranc de riu \u00e9s una malura que provoca, en pocs dies, la mort del 100% dels individus d&#8217;una poblaci\u00f3 de cranc d<\/span><span style=\"font-family: inherit; font-size: 1em;\">e riu de potes blanques. Els crancs americans, per contra, s\u00f3n resistents a aquesta malura i \u00e9s per aquesta ra\u00f3 que, a poc a poc, han anat colonitzant gran part dels nostres rius i fent que les poblacions de cranc de riu aut\u00f2cton es vegin greument afectades, quedant redu\u00efdes a les cap\u00e7aleres dels rius, on els altres crancs tenen m\u00e9s dificultats per arribar-hi.<\/span><\/p>\n<p style=\"text-align: justify;\">Des del CdA de la Garrotxa volem contribuir a la protecci\u00f3 d&#8217;aquesta esp\u00e8cie i hem pensat que, una de les millors maneres de fer-ho, \u00e9s donant a con\u00e8ixer aquesta problem\u00e0tica a l&#8217;alumnat i als centres que tenen inter\u00e8s en fer l&#8217;estudi del riu. \u00c9s per aix\u00f2 que ens posem a la feina i, per al curs vinent, esperem poder tenir a punt una nova<\/p>\n<p style=\"text-align: justify;\">\u00a0proposta did\u00e0ctica on a trav\u00e9s de l&#8217;estudi de les caracter\u00edstiques fisicoqu\u00edmiques i biol\u00f2giques dels rius podem avaluar, valorar i fer propostes de millora per a la conservaci\u00f3 d&#8217;aquests ecosistemes i en particular, per a la preservaci\u00f3 del cranc de riu de potes blanques.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10176 aligncenter\" style=\"text-align: justify;\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0002-576x1024.jpg\" alt=\"\" width=\"222\" height=\"395\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0002-576x1024.jpg 576w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0002-169x300.jpg 169w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0002-768x1366.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2021\/06\/IMG-20210617-WA0002.jpg 796w\" sizes=\"auto, (max-width: 222px) 100vw, 222px\" \/><\/p>\n<p style=\"text-align: justify;\">D&#8217;aquesta manera, pretenem tamb\u00e9 poder contribuir en l&#8217;assoliment dels<strong> Objectius de Desenvolupament Sostenible per al 2030, concretament en l&#8217;ODS 15<\/strong>.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avui hem visitat el Centre de Reproducci\u00f3 del cranc de riu de potes blanques situat dins el Parc Natural de la Zona Volc\u00e0nica de la Garrotxa. El principal objectiu d&#8217;aquest centre \u00e9s la cria en captivitat d&#8217;individus de cranc de riu aut\u00f2cton &#8220;Austropotamobius pallipes&#8221;\u00a0amb la finalitat de poder fer repoblacions o reintroduccions en diferents cursos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10175,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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