{"id":36477,"date":"2003-05-16T00:00:00","date_gmt":"2003-05-15T23:00:00","guid":{"rendered":"http:\/\/www.pcb.ub.edu\/\/la-tortuga-babaua-estudiada-ara-al-mediterrani-occidental\/"},"modified":"2003-05-16T00:00:00","modified_gmt":"2003-05-15T23:00:00","slug":"la-tortuga-babaua-estudiada-ara-al-mediterrani-occidental","status":"publish","type":"post","link":"https:\/\/www.pcb.ub.edu\/es\/la-tortuga-babaua-estudiada-ara-al-mediterrani-occidental\/","title":{"rendered":"La tortuga babaua, estudiada ara al Mediterrani occidental"},"content":{"rendered":"<p>Amena\u00e7ada per la contaminaci\u00f3 mediambiental, les arts de pesca i el comer\u00e7 il.legal, \u00e9s la tortuga marina m\u00e9s abundant a la Mediterr\u00e0nia i t\u00e9 capacitat per fer migracions a gran dist\u00e0ncia per l\u2019oc\u00e8a. El nou projecte cient\u00edfic, precursor en l\u2019\u00fas de telemetria via sat\u00e8l.lit en tortugues marines al Mediterrani occidental, t\u00e9 per objectiu millorar el coneixement de l\u2019origen de les tortugues marines a les costes balears \u2013on no hi ha cap \u00e0rea de cria\u2014 i de les rutes migrat\u00f2ries, ecologia, biologia reproductiva i comportament de l\u2019esp\u00e8cie en l\u2019h\u00e0bitat mar\u00ed.<\/p>\n<p> La telemetria per sat\u00e8l.lit \u00e9s una de les metodologies m\u00e9s modernes per estudiar els h\u00e0bits migratoris i biologia reproductiva de tortugues marines. Els dispositius s\u00f3n fixats amb fibra de vidre a la closca dels quelonis, i segons Llu\u00eds Cardona, que \u00e9s responsable en el gBC del programa de teledetecci\u00f3, fins ara han estat col.locats a cinc exemplars alliberats al mar a la costa balear el mar\u00e7 i abril \u00faltims, i la idea \u00e9s instal.lar-ne deu m\u00e9s a finals del juliol. Connectats a la xarxa de sat\u00e8l.lits del sistema ARGOS d\u2019observaci\u00f3 i control del medi ambient, els enginys tenen una durada prevista de 12 mesos. Cada cop que la tortuga surt a respirar a superf\u00edcie, l\u2019aparell envia un senyal als sat\u00e8l.lits, situats en l\u2019\u00f2rbita m\u00e9s pr\u00f2xima a la terra. El senyal es transmet a estacions receptores a terra, des d\u2019on \u00e9s enviat als centres de processament d\u2019ARGOS i d\u2019aqu\u00ed als equipaments inform\u00e0tics del gBC. Com a resultat, els experts n\u2019extreuen dades del lloc on es localitza la tortuga (latitud i longitud), temps mitj\u00e0 a superf\u00edcie i data i hora de l\u2019emissi\u00f3. Aplicant programes de cartografia per computadors, \u00e9s possible delimitar la ruta per la qual ha viatjat cada exemplar, i establir aix\u00ed els mapes de migraci\u00f3 per l\u2019oce\u00e0.<\/p>\n<p> Tots els transmissors s\u00f3n instal.lats en el marc del projecte LIFE \u00abProtecci\u00f3 de les praderes de posid\u00f2nia en LICs de Balears\u00bb(2002-05) concedit al Govern Balear per la Uni\u00f3 Europea i en el qual participa l\u2019equip del gBC, dirigit per \u00c0lex Aguilar i ubicat al Parc Cient\u00edfic de Barcelona.<\/p>\n<p> Segons estudis gen\u00e8tics fets el 2002 per Carles Carreras (gBC) i Marta Pascual (Departament de Gen\u00e8tica de la UB) al programa UE-LIFE i Sa Nostra, les tortugues de les illes Balears provindrien majorit\u00e0riament de poblacions de platges de cria al Carib (M\u00e8xic, Florida, Carolina, etc) on hi ha localitzades les platges de cria m\u00e9s importants de tortuga bababua (amb prop de 300.000 femelles reproductores). Tot i aix\u00f2, no es pot descartar una contribuci\u00f3 de les \u00e0rees de nidificaci\u00f3 del Mediterrani oriental (Gr\u00e8cia, Turquia i L\u00edbia) on la poblaci\u00f3 de femelles reproductores es calcula en nom\u00e9s uns 3.000 exemplars. Amb l\u2019aplicaci\u00f3 del seguiment via sat\u00e8l.lit, els experts podran complementar les dades gen\u00e8tiques, indicant la ruta de retorn de les tortugues al lloc d\u2019origen.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La tortuga babaua (Caretta caretta), esp\u00e8cie protegida a tot el m\u00f3n, \u00e9s estudiada per mitj\u00e0 de telemetria per sat\u00e8l.lit en un projecte pioner en tortugues marines al Mediterrani occidental, dut a terme pel Grup de Biologia de la Conservaci\u00f3 (gBC) de la UB &#8211;dirigit pel professor \u00c0lex Aguilar&#8211; i el Centre de Recuperaci\u00f3 de Tortugues Marines Vellmar\u00ed de Formentera.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-36477","post","type-post","status-publish","format-standard","category-sin-categorizar"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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