{"id":12775,"date":"2021-02-15T02:52:06","date_gmt":"2021-02-15T02:52:06","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=12775"},"modified":"2021-02-15T02:52:06","modified_gmt":"2021-02-15T02:52:06","slug":"wasp-nests-glow-green-under-uv-light","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/ro\/science\/biology\/wasp-nests-glow-green-under-uv-light\/","title":{"rendered":"Cuiburile de viespi str\u0103lucesc \u00een verde sub lumina UV: Un fenomen fascinant de fluorescen\u021b\u0103"},"content":{"rendered":"

Cuiburile de viespi de h\u00e2rtie str\u0103lucesc verde sub lumina UV: un fenomen de fluorescen\u021b\u0103<\/h2>\n\n

Descoperire \u0219i observare<\/h2>\n\n

\u00cen timp ce explora o p\u0103dure din nordul Vietnamului, omul de \u0219tiin\u021b\u0103 Bernd Sch\u00f6llhorn s-a \u00eempiedicat de o priveli\u0219te neobi\u0219nuit\u0103: un glob verde vibrant str\u0103lucea printre frunzi\u0219. Lumin\u00e2nd cu o lumin\u0103 LED ultraviolet\u0103 (UV) pentru a c\u0103uta insecte fluorescente, Sch\u00f6llhorn a confundat ini\u021bial globul cu o lantern\u0103 \u021binut\u0103 de un alt om de \u0219tiin\u021b\u0103. La o inspec\u021bie mai atent\u0103, \u0219i-a dat seama c\u0103 era fagurele deschis al unui cuib de viespe de h\u00e2rtie care emitea o str\u0103lucire verde eteric\u0103.<\/p>\n\n

Fluorescen\u021ba \u00een cuiburile de viespi de h\u00e2rtie<\/h2>\n\n

\u00cen lumina zilei, cuiburile de viespi de h\u00e2rtie apar ca ni\u0219te structuri albe sau galbene modeste. Cu toate acestea, atunci c\u00e2nd sunt iluminate cu lumin\u0103 UV, se transform\u0103 \u00een balize luminoase. Fluorescen\u021ba provine din fibrele de m\u0103tase care acoper\u0103 celulele hexagonale ale cuibului. Aceste fibre absorb lumina UV \u0219i o reemit la o lungime de und\u0103 mai mare, produc\u00e2nd str\u0103lucirea verde caracteristic\u0103.<\/p>\n\n

Distribu\u021bie \u0219i intensitate<\/h2>\n\n

Sch\u00f6llhorn \u0219i echipa sa au testat cuiburile a \u0219ase specii diferite de viespi de h\u00e2rtie din Vietnam, Fran\u021ba \u0219i Guyana Francez\u0103 sub lumin\u0103 UV. \u00cen mod remarcabil, fiecare cuib a prezentat fluorescen\u021b\u0103, cuiburile din Vietnam str\u0103lucind verde, iar cele din alte regiuni emi\u021b\u00e2nd o nuan\u021b\u0103 alb\u0103struie. Str\u0103lucirea a fost deosebit de intens\u0103, sec\u021biuni ale fagurelui de h\u00e2rtie expus fiind vizibile de la o distan\u021b\u0103 de p\u00e2n\u0103 la 60 de picioare.<\/p>\n\n

Evolu\u021bie \u0219i scop<\/h2>\n\n

Fluorescen\u021ba \u00een cuiburile de viespi de h\u00e2rtie este o descoperire relativ nou\u0103, iar scopul s\u0103u r\u0103m\u00e2ne necunoscut. Oamenii de \u0219tiin\u021b\u0103 speculeaz\u0103 c\u0103 str\u0103lucirea verde ar putea servi drept indiciu vizual pentru viespi pentru a-\u0219i localiza cuiburile. Alternativ, capacele de m\u0103tase pot ac\u021biona ca un parasolar, protej\u00e2nd viespile tinere de radia\u021biile UV d\u0103un\u0103toare \u00een timpul metamorfozei.<\/p>\n\n

Aplica\u021bii poten\u021biale<\/h2>\n\n

Descoperirea m\u0103t\u0103sii fluorescente \u00een cuiburile de viespi de h\u00e2rtie a st\u00e2rnit entuziasm \u00een r\u00e2ndul cercet\u0103torilor. Compu\u0219ii chimici responsabili pentru str\u0103lucire ar putea avea aplica\u021bii poten\u021biale \u00een cercetarea biomedical\u0103. De exemplu, ar putea fi utiliza\u021bi pentru a dezvolta noi tehnici de imagistic\u0103 sau sisteme de administrare a medicamentelor \u021bintite.<\/p>\n\n

Fluorescen\u021ba la alte organisme<\/h2>\n\n

Biofluorescen\u021ba, emisia de lumin\u0103 de c\u0103tre organismele vii, nu este specific\u0103 viespilor de h\u00e2rtie. A fost observat\u0103 la o gam\u0103 divers\u0103 de specii, inclusiv salamandre, broa\u0219te, corali, ornitorinci, wombati \u0219i veveri\u021be zbur\u0103toare. Aceste organisme absorb lumina \u0219i apoi o reemit la o lungime de und\u0103 diferit\u0103, cre\u00e2nd o gam\u0103 fascinant\u0103 de culori.<\/p>\n\n

Cercet\u0103ri viitoare<\/h2>\n\n

Descoperirea fluorescen\u021bei \u00een cuiburile de viespi de h\u00e2rtie a deschis noi c\u0103i de cercetare. Oamenii de \u0219tiin\u021b\u0103 sunt dornici s\u0103 deslu\u0219easc\u0103 mecanismele chimice din spatele str\u0103lucirii \u0219i s\u0103 exploreze poten\u021bialele sale aplica\u021bii ecologice \u0219i biomedicale. Studiile viitoare vor face lumin\u0103 asupra originilor evolutive ale acestui fenomen fascinant \u0219i asupra semnifica\u021biei sale \u00een lumea natural\u0103.<\/p>","protected":false},"excerpt":{"rendered":"

Cuiburile de viespi de h\u00e2rtie str\u0103lucesc verde sub lumina UV: un fenomen de fluorescen\u021b\u0103 Descoperire \u0219i observare \u00cen timp ce explora o p\u0103dure din nordul Vietnamului, omul de \u0219tiin\u021b\u0103 Bernd…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[4201,17266,14084,7383,17264,17260,17263,17261,17262,17265,8877],"class_list":["post-12775","post","type-post","status-publish","format-standard","hentry","category-biology","tag-biofluorescence","tag-biomedical-research","tag-wasp-nests","tag-fluorescence","tag-larvae","tag-ultraviolet-light","tag-metamorphosis","tag-silk-fibers","tag-green-glow","tag-sunshade","tag-paper-wasps"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/12775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/comments?post=12775"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/12775\/revisions"}],"predecessor-version":[{"id":12776,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/12775\/revisions\/12776"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/media?parent=12775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/categories?post=12775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/tags?post=12775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}