{"id":10210,"date":"2021-02-11T09:18:37","date_gmt":"2021-02-11T08:18:37","guid":{"rendered":"https:\/\/zeleni-prsten.hr\/web\/?p=10210"},"modified":"2021-02-11T09:18:37","modified_gmt":"2021-02-11T08:18:37","slug":"kopno-ili-more-ekoloski-i-geneticki-aspekti-izbora-stanista-crvenokljune-cigre","status":"publish","type":"post","link":"https:\/\/zeleni-prsten.hr\/portal\/kopno-ili-more-ekoloski-i-geneticki-aspekti-izbora-stanista-crvenokljune-cigre\/","title":{"rendered":"Kopno ili more: ekolo\u0161ki i geneti\u010dki aspekti izbora stani\u0161ta crvenokljune \u010digre"},"content":{"rendered":"<p>Crvenokljuna \u010digra Sterna hirundo je kolonijalna vrsta ptice koja se uglavnom gnijezdi na niskim morskim obalama, ali nastanjuje i slatkovodna kontinentalna stani\u0161ta poput \u0161ljun\u010danih otoka na rijekama i jezerima te umjetna gnjezdili\u0161ta (platforme i lukobrane). Selica je te zime provodi du\u017e morskih obala ju\u017ene polutke. Morska stani\u0161ta \u010digrama potencijalno nude ve\u0107e podru\u010dje hranjenja i mogu\u0107nost ranijeg po\u010detka gnije\u017e\u0111enja, ali tamo tro\u0161e energiju na izlu\u010divanje soli, a sam salinitet ima imunosupresivno djelovanje. Slatkovodna stani\u0161ta, iako povr\u0161inom manja, imaju i postojaniju dostupnost plijena, pa bi uvjeti za gnije\u017e\u0111enje na tim stani\u0161tima mogli biti povoljniji. No, ve\u0107ina kontinentalnih kolonija zbog ure\u0111enja rijeka danas ovisi o umjetnim otocima i platformama, koje je neprestano potrebno odr\u017eavati.<\/p>\n<p>Geneti\u010dka raznolikost jedan je od glavnih \u010dimbenika koji doprinose sposobnosti populacije da evoluira i prilagodi se novim stani\u0161tima i uvjetima. Niska geneti\u010dka raznolikost mo\u017ee dovesti do smanjenja komponenti fitnesa, kao \u0161to su pre\u017eivljavanje i reproduktivni uspjeh i tako dovesti do nemogu\u0107nosti prilagodbe populacije na promjene u okoli\u0161u. Procjena geneti\u010dke raznolikost stoga je va\u017ena za odre\u0111ivanje potencijala pre\u017eivljavanja populacije.<\/p>\n<p>Projektom \u0107e se utvrditi ekolo\u0161ke i geneti\u010dke razlike izme\u0111u kolonija \u010digri na slatkovodnim i morskim stani\u0161tima. Specifi\u010dni ciljevi su: utvr\u0111ivanje uspje\u0161nosti gnije\u017e\u0111enja, uzoraka kori\u0161tenja stani\u0161ta tijekom gnije\u017e\u0111enja i selidbene fenologije \u010digri s kontinentalnih i morskih kolonija, kao i procjena neutralne geneti\u010dke raznolikosti i populacijske strukture te procjena adaptivne geneti\u010dke varijacije. Otkrivanje odnosa izme\u0111u stani\u0161ta i uspje\u0161nosti gnije\u017e\u0111enja, fitnesa i geneti\u010dke raznolikosti crvenokljunih \u010digri omogu\u0107it \u0107e nam procjenu njihove sposobnosti da se prilagode antropogenim promjenama u stani\u0161tu.<\/p>\n<p>Projekt \u0107e trajati \u010detiri godine (1. velja\u010de 2021. do 31. sije\u010dnja 2025.) i obuhvatit \u0107e \u010detiri gnijezde\u0107e sezone. Terenski \u0107e se rad odvijati na kolonijama du\u017e rijeke Save u Zagreba\u010dkoj \u017eupaniji i na sjevernom Jadranu. Kretanje prilikom hranjenja istra\u017eivat \u0107emo pomo\u0107u GPS-UHF oda\u0161ilja\u010da, selidbu pomo\u0107u geolokatora, a uspje\u0161nost gnije\u017e\u0111enja pra\u0107enjem veli\u010dine pologa i produktivnosti kolonije. Neutralnu geneti\u010dku raznolikost i strukturu populacija istra\u017eit \u0107emo pomo\u0107u mtDNA kontrolne regije ili mikrosatelitnih lokusa, dok \u0107emo adaptivnu geneti\u010dku varijaciju istra\u017eiti karakterizacijom MHC lokusa pomo\u0107u NGS amplikon sekvenciranja.<\/p>\n<p>Otkrivanje \u010dimbenika koji utje\u010du na uspje\u0161nost gnije\u017e\u0111enja, kondiciju i geneti\u010dku raznolikost crvenokljunih \u010digri omogu\u0107it \u0107e procjenu njihove sposobnosti da se prilagode antropogenim promjenama u stani\u0161tu. Rezultati \u0107e biti objavljeni u \u010detiri znanstvena rada, gdjegod bude mogu\u0107e koriste\u0107i model otvorenog (slobodnog) pristupa, a spoznaje \u0107emo predstaviti i na me\u0111unarodnim znanstvenim konferencijama. Ovaj \u0107e projekt omogu\u0107iti i da dva mlada istra\u017eiva\u010da, doktorand i poslijedoktorand, razviju svoje znanstvene karijere.<\/p>\n<p>Istra\u017eiva\u010dka grupa sastoji se od 12 \u010dlanova, a osim djelatnika Zavoda za ornitologiju, sudjeluju djelatnici Zavoda za Animalnu fiziologiju Prirodoslovno-matemati\u010dkog fakulteta, Centra za peradarstvo Hrvatskog veterinarskog instituta, Univerze na Primorskem, Koper, Sveu\u010dili\u0161ta u Ljubljani i JU Zeleni prsten Zagreba\u010dke \u017eupanije.<\/p>\n<p>Izvor: HAZU<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Crvenokljuna \u010digra Sterna hirundo je kolonijalna vrsta ptice koja se uglavnom gnijezdi na niskim morskim obalama, ali nastanjuje i slatkovodna kontinentalna stani\u0161ta poput \u0161ljun\u010danih otoka na rijekama i jezerima te umjetna gnjezdili\u0161ta (platforme i lukobrane). Selica je te zime provodi [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":9719,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[59],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.4.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kopno ili more: ekolo\u0161ki i geneti\u010dki aspekti izbora stani\u0161ta crvenokljune \u010digre - JU Zeleni prsten Zagreba\u010dke \u017eupanije<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zeleni-prsten.hr\/portal\/kopno-ili-more-ekoloski-i-geneticki-aspekti-izbora-stanista-crvenokljune-cigre\/\" \/>\n<meta property=\"og:locale\" content=\"hr_HR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kopno ili more: ekolo\u0161ki i geneti\u010dki aspekti izbora stani\u0161ta crvenokljune \u010digre - JU Zeleni prsten Zagreba\u010dke \u017eupanije\" \/>\n<meta property=\"og:description\" content=\"Crvenokljuna \u010digra Sterna hirundo je kolonijalna vrsta ptice koja se uglavnom gnijezdi na niskim morskim obalama, ali nastanjuje i slatkovodna kontinentalna stani\u0161ta poput \u0161ljun\u010danih otoka na rijekama i jezerima te umjetna gnjezdili\u0161ta (platforme i lukobrane). 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