Vzorek TMP 2003.45.64 mo\u017en\u00e1 nen\u00ed nejatraktivn\u011bj\u0161\u00ed fos\u00edli\u00ed, ale pro paleontology skr\u00fdv\u00e1 cenn\u00e9 stopy o \u017eivot\u011b d\u00e1vn\u00fdch dinosaur\u016f. Tato spodn\u00ed \u010delist Albertosaura, velk\u00e9ho tyranosaura, nese \u0159adu r\u00fdh, kter\u00e9 odhaluj\u00ed p\u0159\u00edb\u011bh prehistorick\u00fdch setk\u00e1n\u00ed.<\/p>\n\n
Zjistilo se, \u017ee r\u00fdhy na \u010delisti Albertosaura zp\u016fsobily zuby jin\u00e9ho tyranosaura. Tento typ zran\u011bn\u00ed byl pozorov\u00e1n i na jin\u00fdch fos\u00edli\u00edch tyranosaur\u016f, co\u017e nazna\u010duje, \u017ee tito obrov\u0161t\u00ed pred\u00e1to\u0159i se p\u0159i souboj\u00edch \u010dasto zakusovali do tv\u00e1\u0159\u00ed. Vzor po\u0161kozen\u00ed odli\u0161uje skusy tyranosaura od l\u00e9z\u00ed zp\u016fsoben\u00fdch mikroorganismy.<\/p>\n\n
Zaj\u00edmav\u00e9 je, \u017ee \u010delist Albertosaura, kterou popsal Phil Bell ve sv\u00e9 studii, vykazovala d\u016fkazy o dvou odli\u0161n\u00fdch kousnut\u00edch. Jeden hlubok\u00fd \u017el\u00e1bek pobl\u00ed\u017e p\u0159edn\u00ed \u010d\u00e1sti \u010delisti byl \u010derstv\u00fd a hladk\u00fd, zat\u00edmco t\u0159i rovnob\u011b\u017en\u00e9 zubn\u00ed stopy a bodn\u00e1 r\u00e1na d\u00e1le vzadu se zahojily. To nazna\u010duje, \u017ee Albertosaurus p\u0159e\u017eil souboj s jin\u00fdm tyranosaurem, ale utrp\u011bl druh\u00e9 kousnut\u00ed pobl\u00ed\u017e doby sv\u00e9 smrti.<\/p>\n\n
Poran\u011bn\u00e1 \u010delist nebyla jedinou kost\u00ed nalezenou v kostnici Dry Island Buffalo Jump Provincial Park, kter\u00e1 vykazovala patologick\u00e9 rysy. Bell identifikoval p\u011bt dal\u0161\u00edch kost\u00ed s abnormalitami, v\u010detn\u011b po\u0161kozen\u00fdch \u017eeber a kost\u00ed prst\u016f na nohou od r\u016fzn\u00fdch jedinc\u016f. \u017debra byla zlomen\u00e1 a zahojen\u00e1, zat\u00edmco kosti prst\u016f na nohou vykazovaly kost\u011bn\u00e9 v\u00fdr\u016fstky zn\u00e1m\u00e9 jako entheofyty, kter\u00e9 se tvo\u0159\u00ed na \u00faponech vaz\u016f nebo \u0161lach. V\u00fdznam t\u011bchto l\u00e9z\u00ed kost\u00ed prst\u016f na nohou z\u016fst\u00e1v\u00e1 nejist\u00fd, proto\u017ee entheofyty se mohou vyvinout z r\u016fzn\u00fdch d\u016fvod\u016f.<\/p>\n\n
P\u0159es objev t\u011bchto patologick\u00fdch kost\u00ed Bell poznamenal, \u017ee celkov\u00fd v\u00fdskyt poran\u011bn\u00ed mezi 26 zkouman\u00fdmi jedinci Albertosaura byl relativn\u011b n\u00edzk\u00fd, s pouh\u00fdmi \u0161esti poran\u011bn\u00edmi u dvou jedinc\u016f. To kontrastuje s kostnicemi jin\u00fdch velk\u00fdch drav\u00fdch dinosaur\u016f, jako je Allosaurus a Majungasaurus, kter\u00e9 vykazovaly vy\u0161\u0161\u00ed m\u00edru patologi\u00ed. D\u016fvod tohoto rozd\u00edlu v prevalenci zran\u011bn\u00ed z\u016fst\u00e1v\u00e1 z\u00e1hadou.<\/p>\n\n
Poran\u011bn\u00ed a nemoci dinosaur\u016f mohou poskytnout cenn\u00e9 poznatky o jejich chov\u00e1n\u00ed, ekologick\u00fdch interakc\u00edch a zdravotn\u00edm stavu. Studium paleopatologie, anal\u00fdza patologick\u00fdch zm\u011bn u d\u00e1vn\u00fdch organism\u016f, umo\u017e\u0148uje v\u011bdc\u016fm rekonstruovat \u017eivot vyhynul\u00fdch zv\u00ed\u0159at a pochopit v\u00fdzvy, kter\u00fdm \u010delila.<\/p>\n\n
N\u00edzk\u00fd v\u00fdskyt patologi\u00ed v populaci Albertosaura na Dry Island nazna\u010duje, \u017ee tito dinosau\u0159i mohli b\u00fdt m\u00e9n\u011b n\u00e1chyln\u00ed ke zran\u011bn\u00edm ne\u017e jin\u00e9 druhy tyranosaur\u016f. To by mohlo b\u00fdt zp\u016fsobeno faktory, jako je jejich stanovi\u0161t\u011b, dostupnost ko\u0159isti nebo soci\u00e1ln\u00ed struktura. K prozkoum\u00e1n\u00ed t\u011bchto mo\u017enost\u00ed a z\u00edsk\u00e1n\u00ed hlub\u0161\u00edho porozum\u011bn\u00ed dynamiky populace Albertosaura je zapot\u0159eb\u00ed dal\u0161\u00ed v\u00fdzkum.<\/p>\n\n
Porovn\u00e1n\u00ed v\u00fdskytu patologi\u00ed v r\u016fzn\u00fdch kostnic\u00edch dinosaur\u016f m\u016f\u017ee poskytnout cenn\u00e9 informace o environment\u00e1ln\u00edch a ekologick\u00fdch faktorech, kter\u00e9 ovliv\u0148ovaly zdrav\u00ed a p\u0159e\u017eit\u00ed dinosaur\u016f. Ni\u017e\u0161\u00ed v\u00fdskyt patologi\u00ed v populaci Albertosaura na Dry Island ve srovn\u00e1n\u00ed s jin\u00fdmi kostnicemi tyranosaur\u016f vyvol\u00e1v\u00e1 ot\u00e1zky ohledn\u011b jedine\u010dn\u00fdch charakteristik tohoto konkr\u00e9tn\u00edho ekosyst\u00e9mu.<\/p>\n\n
Objev poran\u011bn\u00fdch kost\u00ed v populaci Albertosaura otev\u00edr\u00e1 nov\u00e9 cesty pro paleo patologick\u00fd v\u00fdzkum. Budouc\u00ed studie se mohou zam\u011b\u0159it na identifikaci dal\u0161\u00edch patologick\u00fdch vzork\u016f, zkoum\u00e1n\u00ed p\u0159\u00ed\u010din a n\u00e1sledk\u016f zran\u011bn\u00ed a srovn\u00e1v\u00e1n\u00ed zdravotn\u00edho stavu r\u016fzn\u00fdch druh\u016f a populac\u00ed dinosaur\u016f. Tato zkoum\u00e1n\u00ed roz\u0161\u00ed\u0159\u00ed na\u0161e porozum\u011bn\u00ed paleoekologie dinosaur\u016f a v\u00fdzv\u00e1m, kter\u00fdm \u010delili ve sv\u00fdch d\u00e1vn\u00fdch prost\u0159ed\u00edch.<\/p>","protected":false},"excerpt":{"rendered":"
Zran\u011bn\u00ed Albertosaura odhaluj\u00ed d\u00e1vn\u00e9 interakce dinosaur\u016f Objev poran\u011bn\u00e9 \u010delisti Albertosaura Vzorek TMP 2003.45.64 mo\u017en\u00e1 nen\u00ed nejatraktivn\u011bj\u0161\u00ed fos\u00edli\u00ed, ale pro paleontology skr\u00fdv\u00e1 cenn\u00e9 stopy o \u017eivot\u011b d\u00e1vn\u00fdch dinosaur\u016f. Tato spodn\u00ed \u010delist…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[6789,134,239,137,5513,6790],"class_list":["post-3586","post","type-post","status-publish","format-standard","hentry","category-paleontology","tag-albertosaurus","tag-dinosaurs","tag-fossils","tag-paleontology","tag-tyrannosaurs","tag-injuries"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=3586"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3586\/revisions"}],"predecessor-version":[{"id":3587,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3586\/revisions\/3587"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=3586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=3586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=3586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}