{"id":5157363,"date":"2013-03-21T21:57:07","date_gmt":"2013-03-21T20:57:07","guid":{"rendered":"https:\/\/criticalbiomass.blog.hu\/2013\/03\/21\/rovid_szarnyakon"},"modified":"2013-03-21T21:57:07","modified_gmt":"2013-03-21T20:57:07","slug":"rovid_szarnyakon","status":"publish","type":"post","link":"https:\/\/criticalbiomass.hu\/?p=5157363","title":{"rendered":"R\u00f6vid sz\u00e1rnyakon"},"content":{"rendered":"<p><img decoding=\"async\" src=\"http:\/\/m.cdn.blog.hu\/cr\/criticalbiomass\/image\/post_img\/2013\/03\/cliff_swallow.jpg\" alt=\"cliff_swallow.jpg\" class=\"imgleft\" \/>A k\u00fcl\u00f6nb\u00f6z\u0151 mad\u00e1rjellegek v\u00e1ltoz\u00e1sa szelekci\u00f3s nyom\u00e1s alatt (legyen az <a href=\"http:\/\/criticalbiomass.blog.hu\/2006\/07\/14\/csor_rendszer\" title=\"Cs\u0151r rendszer\" target=\"_self\" rel=\"noopener\">term\u00e9szetes<\/a>, vagy <a href=\"http:\/\/criticalbiomass.blog.hu\/2013\/03\/02\/galamb_galler\" title=\"Gall\u00e9ros galambok\" target=\"_self\" rel=\"noopener\">mesters\u00e9ges<\/a>) sz\u00e1mos j\u00f3l dokument\u00e1lhat\u00f3 p\u00e9ld\u00e1j\u00e1t adta az evol\u00faci\u00f3nak az ut\u00f3bbi \u00e9vek sor\u00e1n.<\/p>\n<p>Most egy r\u00f6vid tanulm\u00e1ny a&nbsp;<em>Current Biology<\/em> has\u00e1bjain azt mutatja be, hogy mik\u00e9pp befoly\u00e1solta indirekt m\u00f3don az ember az amerikai sziklafecske (<i>Petrochelidon pyrrhonota<\/i>) sz\u00e1rnyfeszt\u00e1vols\u00e1g\u00e1nak v\u00e1ltoz\u00e1s\u00e1t.<\/p>\n<p>A sz\u00f3ban forg\u00f3 mad\u00e1r el\u0151szeretettel f\u00e9szkel Oklahoma \u00e9s Nebraska aut\u00f3p\u00e1lya h\u00eddjai \u00e9s fel\u00fclj\u00e1r\u00f3i ment\u00e9n, ahol a nyolcvanas \u00e9vek sor\u00e1n megjelen\u0151 pick-up jelleg\u0171 aut\u00f3k magass\u00edtott h\u0171t\u0151r\u00e1csain sz\u00e1mos egyed vesztette \u00e9let\u00e9t.<\/p>\n<p>Mindez a szelekci\u00f3s nyom\u00e1s azokat a madarakat r\u00e9szes\u00edtette el\u0151nyben, akik gyorsabban tudtak felsz\u00e1llni, illetve a leveg\u0151ben fordulni. Ehhez a r\u00f6vid, lekerekedett sz\u00e1rnyak ink\u00e1bb alkalmasak aerodinamikailag, mint a hossz\u00faak sz\u00e1rnyak, mert optim\u00e1lisabb a fel\u00fcleti terhel\u00e9s\u00fck. \u00c9s ennek megfelel\u0151en, azt l\u00e1tni, hogy a nagyobb sz\u00e1rnyfesztt\u00e1vols\u00e1g\u00fa fecsk\u00e9k t\u00falreprezent\u00e1ltak az el\u00fct\u00f6tt madarak (&#8222;road kills&#8221;) k\u00f6z\u00f6tt, illetve, mivel az \u00e9vek sor\u00e1n az aut\u00f3p\u00e1ly\u00e1k ment\u00e9n lak\u00f3 &nbsp;popul\u00e1ci\u00f3 (&#8222;population at large&#8221;) sz\u00e1rnyfesszt\u00e1vols\u00e1ga cs\u00f6kkeni kezdett, egyre kevesebb el\u00fct\u00f6tt mad\u00e1rral tal\u00e1lkozhatunk. A f\u00e9szkek sz\u00e1ma viszont n\u00f6vekszik, megb\u00edzhat\u00f3 jelek\u00e9nt a megn\u00f6vekedett fitnesznek.<\/p>\n<p><!--more--><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/m.cdn.blog.hu\/cr\/criticalbiomass\/image\/post_img\/2013\/03\/roadkill-winglength.jpg\" alt=\"roadkill-winglength.jpg\" class=\"imgnotext\" \/><\/p>\n<p>Vagyis j\u00f3l k\u00f6vethet\u0151, amint a mesters\u00e9ges k\u00f6rnyezet \u00e1ltal dikt\u00e1lt term\u00e9szetes szelekci\u00f3 egy fontos anat\u00f3miai jelleg megv\u00e1ltoz\u00e1s\u00e1t okozta.<\/p>\n<p>(<em>A sziklafecske k\u00e9pe <a href=\"http:\/\/www.flickriver.com\/photos\/gtepke\/popular-interesting\/\" target=\"_self\" rel=\"noopener\">Glen Tepke oldal\u00e1r\u00f3l<\/a>&nbsp;van.<\/em>)<\/p>\n<hr \/>\n<p><span size=\"1\" style=\"font-size: xx-small;\"> <b>Brown CR, Bomberger-Brown M<\/b> (2013) Where has all the road kill gone? <i>Curr Bio<\/i>, <strong>23(6)<\/strong>: R233-R234. <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A k\u00fcl\u00f6nb\u00f6z\u0151 mad\u00e1rjellegek v\u00e1ltoz\u00e1sa szelekci\u00f3s nyom\u00e1s alatt (legyen az term\u00e9szetes, vagy mesters\u00e9ges) sz\u00e1mos j\u00f3l dokument\u00e1lhat\u00f3 p\u00e9ld\u00e1j\u00e1t adta az evol\u00faci\u00f3nak az ut\u00f3bbi \u00e9vek sor\u00e1n. Most egy r\u00f6vid tanulm\u00e1ny a&nbsp;Current Biology has\u00e1bjain azt mutatja be, hogy mik\u00e9pp befoly\u00e1solta indirekt m\u00f3don az ember &hellip; <a href=\"https:\/\/criticalbiomass.hu\/?p=5157363\">Egy kattint\u00e1s ide a folytat\u00e1shoz&#8230;. <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,1],"tags":[],"class_list":["post-5157363","post","type-post","status-publish","format-standard","hentry","category-evolucio","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts\/5157363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5157363"}],"version-history":[{"count":0,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts\/5157363\/revisions"}],"wp:attachment":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5157363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5157363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5157363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}