{"id":5005643,"date":"2007-09-07T21:55:19","date_gmt":"2007-09-07T19:55:19","guid":{"rendered":"https:\/\/criticalbiomass.blog.hu\/2007\/09\/07\/meleg_urgek"},"modified":"2007-09-07T21:55:19","modified_gmt":"2007-09-07T19:55:19","slug":"meleg_urgek","status":"publish","type":"post","link":"https:\/\/criticalbiomass.hu\/?p=5005643","title":{"rendered":"Meleg \u00fcrg\u00e9k"},"content":{"rendered":"

\nNem, most nem a mut\u00e1ns egerek szexu\u00e1lis szok\u00e1sainak okait boncol\u00f3 poszt<\/a> folytat\u00e1s\u00e1r\u00f3l van sz\u00f3, hanem konkr\u00e9tan meleg (testh\u0151m\u00e9rs\u00e9klet\u0171) \u00fcrg\u00e9kr\u0151l.\n<\/p>\n

\nK\u00f6zelebbr\u0151l egy kaliforniai \u00fcrgefajr\u00f3l (Spermophilus beecheyi<\/i>), amelynek egyik legjelent\u0151sebb ragadoz\u00f3ja a cs\u00f6rg\u0151k\u00edgy\u00f3. Ut\u00f3bbi egyik jellegzetes tulajdons\u00e1ga, hogy k\u00fcl\u00f6nleges h\u0151g\u00f6drei seg\u00edts\u00e9g\u00e9vel a k\u00f6rnyezete h\u0151t\u00e9rk\u00e9p\u00e9t is l\u00e1tja (\u00e9s itt nem csak valamif\u00e9le \u00e1tvitt \u00e9rtelemben lev\u0151 l\u00e1t\u00e1sr\u00f3l van sz\u00f3, hiszen a k\u00edgy\u00f3k h\u0151\u00e9rz\u00e9keny szerve az els\u0151dleges l\u00e1t\u00f3k\u00f6zpontba k\u00fcldi a jeleit, ahol a k\u00edgy\u00f3 integr\u00e1lja azokat a val\u00f3di vizu\u00e1lis ingerekkel), ez\u00e9rt m\u00e9g koroms\u00f6t\u00e9tben is f\u00e9lelmetes pontos vad\u00e1sz.\n<\/p>\n

\nPersze, mint az egy t\u00f6bb milli\u00f3 \u00e9ves vad\u00e1sz-pr\u00e9da kapcsolatban v\u00e1rhat\u00f3, az \u00fcrg\u00e9k mindenf\u00e9le apr\u00f3 praktik\u00e1kat fejlesztettek ki, hogy t\u00e1vol tarts\u00e1k a k\u00edgy\u00f3kat a f\u00e9szk\u00fckt\u0151l (a legfinomabb zs\u00e1km\u00e1ny ugyanis a fiatal \u00fcrgehusi). P\u00e9ld\u00e1ul r\u00e9szlegesen immunisak a k\u00edgy\u00f3m\u00e9regre \u00e9s a cs\u00f6rg\u0151k\u00edgy\u00f3k l\u00e1tt\u00e1n izgatott t\u00e1ncba kezdenek, mely k\u00f6zben a farkukat fenyeget\u0151en lobogtatj\u00e1k. Ez a viselked\u00e9s m\u00e1s k\u00edgy\u00f3k eset\u00e9n is megfigyelhet\u0151 (egy\u00e9bk\u00e9nt b\u00e1rmilyen meglep\u0151, de hat\u00e1sos) egy apr\u00f3 k\u00fcl\u00f6nbs\u00e9ggel: cs\u00f6rg\u0151k\u00edgy\u00f3k l\u00e1tt\u00e1n\/hallat\u00e1n az \u00fcrg\u00e9k farka is kimelegedik (l\u00e1sd A, illetve itt<\/a>), ez pedig m\u00e1s – nem h\u0151r\u00e9z\u00e9keny – k\u00edgy\u00f3k eset\u00e9ben nem \u00e9szlelhet\u0151 (B, ill. itt<\/a>). (Hogy a viselked\u00e9s nem f\u00f6l\u00f6sleges az abb\u00f3l is lem\u00e9rhet\u0151, hogy, ha egy robot\u00fcrg\u00e9vel engedtek \u00f6ssze egy cs\u00f6rg\u0151k\u00edgy\u00f3t, akkor ut\u00f3bbi l\u00e9nyeges kevesebbszer t\u00e1madta az izg\u0151-mozg\u00f3 r\u00e1gcs\u00e1l\u00f3 makettet, amikor annak farka is meleg volt.)\n<\/p>\n

\nAz eg\u00e9szben a legmeglep\u0151bb tal\u00e1n az, hogy ezek szerint az \u00fcrg\u00e9k eg\u00e9sz kifinomult rendszertani ismeretekr\u0151l tesznek tanuls\u00e1got \u00e9s "tudj\u00e1k", hogy a s\u00f6t\u00e9tben a h\u0151l\u00e1t\u00f3 ragadoz\u00f3 ellen\u00e9ben egy puszt\u00e1n vizu\u00e1lis ingerrel semmit sem \u00e9rn\u00e9nek, \u00edgy nem \u00e1rt azt felturb\u00f3zni egy kis meleggel is.\n<\/p>\n

\n


\nRundus AS, Owings, DH, Joshi SS, Chinn E, Giannini<\/strong> (2007) Ground squirrels use an infrared signal to deter rattlesnake predation. PNAS<\/i> 104<\/strong>: 14372-14376<\/a>.
\n<\/font><\/p>\n","protected":false},"excerpt":{"rendered":"

Nem, most nem a mut\u00e1ns egerek szexu\u00e1lis szok\u00e1sainak okait boncol\u00f3 poszt folytat\u00e1s\u00e1r\u00f3l van sz\u00f3, hanem konkr\u00e9tan meleg (testh\u0151m\u00e9rs\u00e9klet\u0171) \u00fcrg\u00e9kr\u0151l. K\u00f6zelebbr\u0151l egy kaliforniai \u00fcrgefajr\u00f3l (Spermophilus beecheyi), amelynek egyik legjelent\u0151sebb ragadoz\u00f3ja a cs\u00f6rg\u0151k\u00edgy\u00f3. Ut\u00f3bbi egyik jellegzetes tulajdons\u00e1ga, hogy k\u00fcl\u00f6nleges h\u0151g\u00f6drei seg\u00edts\u00e9g\u00e9vel a … Egy kattint\u00e1s ide a folytat\u00e1shoz…. →<\/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":[1],"tags":[],"class_list":["post-5005643","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts\/5005643","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=5005643"}],"version-history":[{"count":0,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts\/5005643\/revisions"}],"wp:attachment":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5005643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5005643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5005643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}