Unsplash<\/a><\/figcaption><\/figure>\n\n\n\nSteb\u0117jimas ir analiz\u0117:<\/p>\n\n\n\n
Izotopai - tai elementai, turintys t\u0105 pat\u012f proton\u0173 skai\u010di\u0173, bet skirting\u0105 neutron\u0173 skai\u010di\u0173, kurie laikui b\u0117gant nesuyra.<\/p>\n\n\n\n
Dabar \u0161ie izotop\u0173 elementai siejami su migruojan\u010di\u0173 gyv\u016bn\u0173 mitybos \u0161altinio nustatymu.<\/p>\n\n\n\n
Teigiama, kad akies obuolio l\u0119\u0161iuko plok\u0161tel\u0117se gausu baltym\u0173. \u0160ie baltymai yra suri\u0161ti su izotopiniais elementais, d\u0117l kuri\u0173 susidaro izotopinis para\u0161as, kur\u012f galima \u012fvertinti atliekant stabili\u0173j\u0173 izotop\u0173 analiz\u0119.<\/p>\n\n\n\n
La\u0161i\u0161ini\u0173 \u017euv\u0173 jaunikliai buvo tiriami trijose skirtingose izotopin\u0117se buvein\u0117se su skirtingu mitybos tinklu, siekiant kiekybi\u0161kai \u012fvertinti \u017euv\u0173 akies obuolio archyvin\u012f audin\u012f.<\/p>\n\n\n\n
Buvo naudojami \u0161ie stabilieji izotopai: siera 35, anglis 13 ir azotas 15 (34<\/sup>S, 13<\/sup>C,15<\/sup>N).<\/p>\n\n\n\nSieros izotopas yra naudingas norint su\u017einoti mitybos \u0161altinius. Pakrant\u0117s \u017euv\u0173 migracijos metu gausu anglies 13 izotopo, tod\u0117l jis naudojamas migracijos jud\u0117jimui nustatyti.<\/p>\n\n\n\n
Azoto izotopas naudojamas migruojan\u010di\u0173 gyv\u016bn\u0173 trofiniams lygiams nustatyti.<\/p>\n\n\n\n
Stabili\u0173j\u0173 izotop\u0173 analiz\u0117 atliekama remiantis koncepcija \"esi tai, k\u0105 valgai\".<\/p>\n\n\n\n
Tuo remdamiesi mokslininkai nustat\u0117 toki\u0173 element\u0173, kaip siera, anglis ir azotas, izotop\u0173 kiek\u012f suaugusi\u0173 la\u0161i\u0161ini\u0173 \u017euv\u0173, auginam\u0173 trijose skirtingose buvein\u0117se, audiniuose.<\/p>\n\n\n\n
Atlikus tyrim\u0105 paai\u0161k\u0117jo, kad sezonin\u0117je u\u017eliejamoje vietov\u0117je augusios \u017euvys tur\u0117jo daugiau l\u0119\u0161iuko sluoksni\u0173 ir augo daug grei\u010diau nei augusios up\u0117je ir inkubatoriuje.<\/p>\n\n\n\n
Be to, izotop\u0173 analiz\u0117 parod\u0117, kad \u017euvys d\u0117l aplinkkelio ry\u017ei\u0173 lauk\u0173 turi daug anglies ir sieros.<\/p>\n\n\n\n
Mitybos kiekiui analizuoti buvo naudojamas \u017euv\u0173 aki\u0173 kamuoliuk\u0173 baltym\u0173 ir izotopo elemento suri\u0161imas.<\/p>\n\n\n\n
Be to, la\u0161i\u0161ini\u0173 \u017euv\u0173 jaunikli\u0173 aki\u0173 l\u0119\u0161iuose buvo u\u017efiksuotas stabilusis izotopas, kuris leido juos palyginti su suaugusiomis \u017euvimis, kad b\u016bt\u0173 galima ap\u017evelgti j\u0173 buvein\u0119 ir mitybos \u0161altin\u012f.<\/p>\n\n\n\n
\u0160i stabili\u0173j\u0173 izotop\u0173 analiz\u0117s (SIA) priemon\u0117 i\u0161pl\u0117t\u0117 \u012fvairi\u0173 i\u0161saugojimo projekt\u0173 taikymo srit\u012f. Ji gali b\u016bti naudojama \u012fvairi\u0173 migruojan\u010di\u0173 gyv\u016bn\u0173 buvein\u0117ms i\u0161skirti, nes d\u0117l dabartini\u0173 klimato poky\u010di\u0173, taip pat d\u0117l \u017emogaus veiklos jos yra labai paveiktos.<\/p>\n\n\n\n
Nor\u0117dami daugiau su\u017einoti apie j\u0173 tyrimus, per\u017ei\u016br\u0117kite toliau pateikt\u0105 nuorod\u0105.<\/p>\n\n\n\n
Miranda Bell-Tilcock, Carson A. Jeffres, Andrew L. Rypel, Ted R. Sommer, Jacob V. E. Katz, George Whitman, Rachel C. Johnson. Mitybos rekonstrukcijos pa\u017eanga \u017euv\u0173 aki\u0173 l\u0119\u0161iuose<\/strong>. Ekologijos ir evoliucijos metodai<\/em>, 2021; DOI: 10.1111\/2041-210X.13543<\/a><\/p>\n\n\n\n<\/p>","protected":false},"excerpt":{"rendered":"
Teisingai, visi atsakymai slypi akyse. Net kai kalbama apie \u017euv\u0173 istorij\u0105. Kalifornijos universiteto mokslinink\u0117 Miranda Bell ir jos komanda iliustravo, kaip \u017euv\u0173 aki\u0173 obuoli\u0173 l\u0119\u0161iai buvo naudojami \u017euv\u0173 mitybos ir migracijos poky\u010diams prognozuoti. Vandens gyv\u016bn\u0173 migracija paprastai vyksta pagal [...]<\/p>","protected":false},"author":18,"featured_media":12903,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959,28],"tags":[554],"yoast_head":"\n
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<\/a>