{"id":67358,"date":"2026-11-02T11:51:26","date_gmt":"2026-11-02T11:51:26","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/02\/isnykusio-milzinisko-gerves-misle-po-150-metu-dnr-parode-kad-tai-buvo-paprastoji-gerve\/"},"modified":"2026-11-02T11:51:26","modified_gmt":"2026-11-02T11:51:26","slug":"isnykusio-milzinisko-gerves-misle-po-150-metu-dnr-parode-kad-tai-buvo-paprastoji-gerve","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/02\/isnykusio-milzinisko-gerves-misle-po-150-metu-dnr-parode-kad-tai-buvo-paprastoji-gerve\/","title":{"rendered":"\u201eI\u0161nykusio mil\u017eini\u0161ko gerv\u0117s\u201c m\u012fsl\u0117 po 150 met\u0173: DNR parod\u0117, kad tai buvo paprastoji gerv\u0117"},"content":{"rendered":"

Prie\u0161 150 met\u0173 apra\u0161ytos, kaip \u201ei\u0161nykusios mil\u017eini\u0161kos gerv\u0117s\u201c, kaul\u0173 liekanos i\u0161 ties\u0173 priklaus\u0117 visai kitam pauk\u0161\u010diui \u2013 paprastajai gervei (Grus grus).<\/p>\n

Toki\u0105 i\u0161vad\u0105 pateik\u0117 mokslininkai, i\u0161tyr\u0119 senovin\u0119 DNR i\u0161 \u012fvairiose Europos vietose rast\u0173 gervi\u0173 kaul\u0173, skelbia \u201eScienceAlert\u201c.<\/p>\n

1870 metais pranc\u016bz\u0173 biologas Alphonse\u2019as Milne-Edwardsas, remdamasis vien kaul\u0173 dyd\u017eiu ir forma, nusprend\u0117, kad labai stambus senovinis kojos kaulas i\u0161 urvo Piet\u0173 Pranc\u016bzijoje negal\u0117jo priklausyti \u0161iuolaikin\u0117ms gervei.<\/p>\n

Tuomet jis \u0161iuos v\u0117lyvojo pleistoceno laikotarpio kaulus priskyr\u0117 tariamai i\u0161nykusiai r\u016b\u0161iai ir j\u0105 pavadino Grus primigenia, ta\u010diau \u0161ios \u201emil\u017eini\u0161kos gerv\u0117s\u201c tapatyb\u0117 v\u0117liau ne kart\u0105 k\u0117l\u0117 gin\u010d\u0173.<\/p>\n

Kaip DNR pakeit\u0117 sen\u0105 klasifikacij\u0105<\/h2>\n

Naujajame tyrime paleoekologas Johnas Stewartas i\u0161 Bornmuto universiteto su kolegomis r\u0117m\u0117si ne vien kaul\u0173 palyginimais, o senovin\u0117s DNR analize, kuri pastaraisiais de\u0161imtme\u010diais tapo svarbiu \u012frankiu ai\u0161kinantis sen\u0173 radini\u0173 kilm\u0119.<\/p>\n

Metodas paprastai apima kaulo gr\u0119\u017eim\u0105 ir \u0161varaus milteli\u0173 m\u0117ginio pa\u0117mim\u0105 i\u0161 vidaus \u2013 i\u0161 jo i\u0161gaunama ir padauginama DNR, kad b\u016bt\u0173 galima lyginti genetinius po\u017eymius.<\/p>\n

Tyr\u0117jai analizavo 18 senovini\u0173 gervi\u0173 kaul\u0173, rast\u0173 Anglijoje, Velse, Pranc\u016bzijoje, Vokietijoje ir Balear\u0173 salose. \u012e imt\u012f pateko ir skirtingo dyd\u017eio paprast\u0173j\u0173 gervi\u0173 kaulai, taip pat keli anks\u010diau priskirti Grus primigenia.<\/p>\n

Rezultatas buvo vienareik\u0161mis: ai\u0161ki\u0173 genetini\u0173 skirtum\u0173 tarp i\u0161tirt\u0173 egzempliori\u0173 nerasta \u2013 visi jie atitiko paprast\u0105j\u0105 gerv\u0119, nepaisant ry\u0161ki\u0173 i\u0161vaizdos ir dyd\u017eio skirtum\u0173.<\/p>\n

Kod\u0117l \u201emil\u017eini\u0161ka gerv\u0117\u201c gal\u0117jo atrodyti kaip atskira r\u016b\u0161is<\/h2>\n

Mokslininkai atkreip\u0117 d\u0117mes\u012f, kad gervei b\u016bdingas ry\u0161kus lytinis dimorfizmas \u2013 patinai gali b\u016bti didesni, o patel\u0117s ma\u017eesn\u0117s. Tai gal\u0117jo prisid\u0117ti prie ankstesni\u0173 sp\u0117lioni\u0173, es\u0105 egzistavo dvi skirtingos r\u016b\u0161ys.<\/p>\n

Vis d\u0117lto tyr\u0117jai negal\u0117jo tiesiogiai i\u0161tirti paties Milne-Edwardso apra\u0161yto etaloninio kaulo, saugomo Pary\u017eiaus Mus\u00e9um national d’Histoire naturelle \u2013 jis laikomas pernelyg vertingu, kad b\u016bt\u0173 galima gr\u0119\u017eti ir imti m\u0117gin\u012f.<\/p>\n

D\u0117l to, kaip pa\u017eymi autoriai, teori\u0161kai lieka nedidel\u0117 tikimyb\u0117, jog originalus radinys gal\u0117jo priklausyti kitam pauk\u0161\u010diui, ta\u010diau turimi duomenys rodo, kad tai ma\u017eai tik\u0117tina.<\/p>\n

Tyrimas kelia ir nauj\u0105 klausim\u0105: kod\u0117l po 11 am\u017eiaus paprastosios gerv\u0117s vidutini\u0161kai \u0117m\u0117 ma\u017e\u0117ti? Autoriai svarsto, kad tai gal\u0117t\u0173 b\u016bti susij\u0119 su klimato kaita ar \u017emoni\u0173 veikla, pavyzd\u017eiui, \u0161lapyni\u0173 sausinimu, ta\u010diau pabr\u0117\u017eia, jog kol kas tai t\u0117ra sp\u0117lion\u0117s.<\/p>\n

Tyrimo rezultatai publikuoti \u017eurnale \u201eRoyal Society Open Science\u201c.<\/p>\n","protected":false},"excerpt":{"rendered":"

Senovin\u0117s DNR analiz\u0117 parod\u0117, kad prie\u0161 150 met\u0173 apra\u0161yta \u201ei\u0161nykusi mil\u017eini\u0161ka gerv\u0117\u201c i\u0161 ties\u0173 buvo paprastoji gerv\u0117, tik didesn\u0117.<\/p>\n","protected":false},"author":0,"featured_media":67359,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[52196,52198,52197,52195,14572,32720,4738],"miestas":[],"class_list":["post-67358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mokslas","tag-grus-primigenia","tag-john-stewart","tag-paleoekologija","tag-paprastoji-gerve","tag-pleistocenas","tag-royal-society-open-science","tag-senovine-dnr"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/67358","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=67358"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/67358\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media\/67359"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=67358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=67358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=67358"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=67358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}