Madagaskare mokslininkai apra\u0161\u0117 nauj\u0105 baobab\u0173 r\u016b\u0161\u012f, kuri ilgus metus buvo laikoma kitos r\u016b\u0161ies atmaina. Tyrimas publikuotas mokslo \u017eurnale \u201eTAXON\u201c, o naujai identifikuotas medis pavadintas \u201eAdansonia bozy\u201c.<\/p>\n
Iki \u0161iol buvo laikoma, kad pasaulyje yra a\u0161tuonios baobab\u0173 r\u016b\u0161ys: \u0161e\u0161ios aptinkamos Madagaskare, viena \u017eemynin\u0117je Afrikoje ir viena Australijoje. Naujoji \u201eA. bozy\u201c r\u016b\u0161is \u0161\u012f skai\u010di\u0173 padidina iki devyni\u0173, dar kart\u0105 pabr\u0117\u017edama salos biologin\u0117s \u012fvairov\u0117s i\u0161skirtinum\u0105.<\/p>\n
Naujoji r\u016b\u0161is i\u0161 pirmo \u017evilgsnio beveik nesiskiria nuo kitos Madagaskaro r\u016b\u0161ies \u201eAdansonia za\u201c. D\u0117l \u0161io pana\u0161umo vien i\u0161orini\u0173 po\u017eymi\u0173 ilg\u0105 laik\u0105 nepakako patikimai atskirti med\u017eius, tod\u0117l \u201eA. bozy\u201c egzemplioriai buvo priskiriami \u201eA. za\u201c.<\/p>\n
L\u016b\u017e\u012f atne\u0161\u0117 genetiniai tyrimai. University of Wisconsin-Madison mokslininkai kartu su Missouri Botanical Garden ir Iowa State University tyr\u0117jais surinko m\u0117ginius i\u0161 skirtinguose Madagaskaro regionuose augan\u010di\u0173 baobab\u0173 ir atliko DNR analiz\u0119.<\/p>\n
Genetiniai duomenys parod\u0117, kad dalis populiacij\u0173, anks\u010diau laikyt\u0173 \u201eA. za\u201c, sudaro atskir\u0105 evoliucin\u0119 linij\u0105. Be to, \u201eA. bozy\u201c pasirod\u0117 esanti artimesn\u0117 \u0161iaur\u0117s Madagaskare augantiems baobabams, o ne r\u016b\u0161iai, prie kurios ji buvo priskiriama pagal i\u0161vaizd\u0105.<\/p>\n
Lauko darbai buvo sud\u0117tingi ir d\u0117l pa\u010di\u0173 baobab\u0173 biologijos. R\u016b\u0161ies nustatymui neretai reikia steb\u0117ti \u017eiedus, nes vien lapai ar kamieno forma gali klaidinti, o \u017eyd\u0117jimas trunka apie m\u0117nes\u012f ir da\u017enai vyksta nakt\u012f.<\/p>\n
Dar viena praktin\u0117 kli\u016btis buvo DNR i\u0161gavimas: baobab\u0173 lapuose gausu polisacharid\u0173, kurie laboratorijoje gali sudaryti lipni\u0105 mas\u0119 ir trukdyti gauti kokybi\u0161k\u0105 genetin\u0119 med\u017eiag\u0105. Tyr\u0117jams pritaikius tinkam\u0105 metodik\u0105, pavyko i\u0161tirti \u0161imtus pasirinkt\u0173 gen\u0173 fragment\u0173 ir atkurti populiacij\u0173 giminyst\u0117s ry\u0161ius.<\/p>\n
Mokslininkai taip pat kelia prielaid\u0105, kad \u201eA. bozy\u201c gali b\u016bti nykstanti r\u016b\u0161is. Atskirta nuo \u201eA. za\u201c, ji gali tur\u0117ti ma\u017eesn\u012f real\u0173 paplitim\u0105, o tai svarbu planuojant apsaugos priemones, vertinant gr\u0117smes ir skirstant gamtosaugos i\u0161teklius.<\/p>\n
Tyrimo autoriai pabr\u0117\u017eia, kad \u0161is atvejis parodo, kaip genetiniai metodai vis da\u017eniau kei\u010dia biologin\u0117s \u012fvairov\u0117s vertinim\u0105. I\u0161ori\u0161kai labai pana\u0161ios r\u016b\u0161ys gali sl\u0117pti skirting\u0105 evoliucin\u0119 istorij\u0105, o tikslus j\u0173 atskyrimas tampa kertinis siekiant efektyvios apsaugos spar\u010diai kintan\u010dioje aplinkoje.<\/p>\n","protected":false},"excerpt":{"rendered":"
Madagaskare apra\u0161yta nauja baobab\u0173 r\u016b\u0161is \u201eAdansonia bozy\u201c: ji de\u0161imtme\u010dius buvo painiojama su \u201eAdansonia za\u201c, kol tai \u012frod\u0117 DNR tyrimai.<\/p>\n","protected":false},"author":0,"featured_media":55492,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[42819,685,2597,3443,14084,37313],"miestas":[],"class_list":["post-55491","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mokslas","tag-baobabai","tag-biologine-ivairove","tag-gamtosauga","tag-genetiniai-tyrimai","tag-madagaskaras","tag-rusiu-atradimai"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/55491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=55491"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/55491\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media\/55492"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=55491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=55491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=55491"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=55491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}