{"id":17,"date":"2026-06-13T10:17:37","date_gmt":"2026-06-13T08:17:37","guid":{"rendered":"https:\/\/journalofspace.com\/vi\/2026\/06\/13\/phan-hoa-thach-cua-soc-dat-tiet-lo-700-000-nam-lich-su-moi-truong\/"},"modified":"2026-06-13T10:19:51","modified_gmt":"2026-06-13T08:19:51","slug":"phan-hoa-thach-cua-soc-dat-tiet-lo-700-000-nam-lich-su-moi-truong","status":"publish","type":"post","link":"https:\/\/journalofspace.com\/vi\/2026\/06\/13\/phan-hoa-thach-cua-soc-dat-tiet-lo-700-000-nam-lich-su-moi-truong\/","title":{"rendered":"Ph\u00e2n h\u00f3a th\u1ea1ch c\u1ee7a s\u00f3c \u0111\u1ea5t ti\u1ebft l\u1ed9 700.000 n\u0103m l\u1ecbch s\u1eed m\u00f4i tr\u01b0\u1eddng"},"content":{"rendered":"

“`html<\/p>\n

Ph\u00e2n h\u00f3a th\u1ea1ch c\u1ee7a s\u00f3c \u0111\u1ea5t ti\u1ebft l\u1ed9 700.000 n\u0103m l\u1ecbch s\u1eed m\u00f4i tr\u01b0\u1eddng<\/h1>\n

Nh\u1eefng hang \u1ed5 c\u1ee7a s\u00f3c \u0111\u1ea5t \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n trong l\u1edbp \u0111\u1ea5t \u0111\u00f3ng b\u0103ng v\u0129nh c\u1eedu \u1edf Yukon, Canada, ch\u1ee9a \u0111\u1ef1ng nh\u1eefng m\u1eabu ph\u00e2n h\u00f3a th\u1ea1ch c\u00f3 tu\u1ed5i \u0111\u1eddi h\u00e0ng tr\u0103m ng\u00e0n n\u0103m. Nh\u1eefng di t\u00edch n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 coprolit, mang \u0111\u1ebfn c\u01a1 h\u1ed9i \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ti\u1ebfp c\u1eadn ADN m\u00f4i tr\u01b0\u1eddng c\u1ed5 x\u01b0a, cho ph\u00e9p t\u00e1i hi\u1ec7n c\u00e1c h\u1ec7 sinh th\u00e1i qu\u00e1 kh\u1ee9 v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c ch\u01b0a t\u1eebng c\u00f3. C\u00e1c ph\u00e2n t\u00edch di truy\u1ec1n \u0111\u00e3 ti\u1ebft l\u1ed9 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a th\u1ef1c v\u1eadt, c\u00f4n tr\u00f9ng, vi sinh v\u1eadt v\u00e0 th\u1eadm ch\u00ed c\u1ea3 c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 v\u00fa l\u1edbn \u0111\u1eb7c tr\u01b0ng c\u1ee7a th\u1ea3o nguy\u00ean voi ma m\u00fat, m\u1ed9t m\u00f4i tr\u01b0\u1eddng hi\u1ec7n \u0111\u00e3 bi\u1ebfn m\u1ea5t. Trong s\u1ed1 nh\u1eefng ph\u00e1t hi\u1ec7n \u0111\u00e1ng ch\u00fa \u00fd nh\u1ea5t, c\u00f3 c\u00e1c b\u1ed9 gen ty th\u1ec3 ho\u00e0n ch\u1ec9nh c\u1ee7a c\u00e1c lo\u00e0i bi\u1ec3u t\u01b0\u1ee3ng nh\u01b0 b\u00f2 r\u1eebng th\u1ea3o nguy\u00ean, ng\u1ef1a hoang v\u00e0 voi ma m\u00fat l\u00f4ng x\u00f9.<\/p>\n

Nh\u1eefng m\u1eabu ph\u00e2n n\u00e0y c\u00f2n gi\u00fap x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t d\u00f2ng s\u00f3c \u0111\u1ea5t B\u1eafc C\u1ef1c ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn, c\u00f3 tu\u1ed5i \u0111\u1eddi 700.000 n\u0103m, t\u1ed3n t\u1ea1i tr\u01b0\u1edbc khi c\u00e1c nh\u00f3m s\u00f3c \u0111\u1ea5t hi\u1ec7n nay ph\u00e2n h\u00f3a. Ph\u00e1t hi\u1ec7n n\u00e0y g\u1ee3i \u00fd v\u1ec1 m\u1ed9t \u0111a d\u1ea1ng di truy\u1ec1n b\u1ea5t ng\u1edd \u1edf nh\u1eefng lo\u00e0i g\u1eb7m nh\u1ea5m n\u00e0y, nh\u1eefng lo\u00e0i \u0111\u00e3 th\u00edch nghi v\u1edbi \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t c\u1ee7a v\u00f9ng B\u1eafc C\u1ef1c. Th\u1ef1c t\u1ebf, s\u00f3c \u0111\u1ea5t ng\u1ee7 \u0111\u00f4ng trong nhi\u1ec1u th\u00e1ng li\u1ec1n, h\u1ea1 th\u1ea5p nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 xu\u1ed1ng d\u01b0\u1edbi 0 \u0111\u1ed9 v\u00e0 nh\u1ecbp tim ch\u1ec9 c\u00f2n m\u1ed9t nh\u1ecbp m\u1ed7i ph\u00fat, m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c sinh t\u1ed3n \u0111\u1ed9c \u0111\u00e1o trong th\u1ebf gi\u1edbi \u0111\u1ed9ng v\u1eadt.<\/p>\n

Coprolit n\u1ed5i b\u1eadt nh\u1edd kh\u1ea3 n\u0103ng b\u1ea3o t\u1ed3n ADN sinh v\u1eadt nh\u00e2n th\u1ef1c, th\u01b0\u1eddng t\u1ed1t h\u01a1n so v\u1edbi x\u01b0\u01a1ng ho\u1eb7c tr\u1ea7m t\u00edch. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 c\u00f3 th\u1ec3 x\u00e1c nh\u1eadn t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a ADN c\u1ed5 x\u01b0a n\u00e0y nh\u1edd c\u00e1c m\u1eabu ph\u00e2n h\u1ee7y \u0111\u1eb7c tr\u01b0ng, c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t t\u00edch c\u1ef1c v\u00e0 ti\u00eau c\u1ef1c nghi\u00eam ng\u1eb7t, c\u0169ng nh\u01b0 vi\u1ec7c x\u00e1c th\u1ef1c ph\u00e2n lo\u1ea1i th\u00f4ng qua m\u00f4 ph\u1ecfng m\u00e1y t\u00ednh. Tr\u00e1i v\u1edbi mong \u0111\u1ee3i, r\u1ea5t \u00edt tr\u01b0\u1eddng h\u1ee3p nhi\u1ec5m b\u1ea9n t\u1eeb v\u1eadt li\u1ec7u b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y, ch\u1ee9ng minh r\u1eb1ng nh\u1eefng m\u1eabu ph\u00e2n n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 nh\u1eefng vi\u00ean nang sinh h\u1ecdc k\u00edn \u0111\u00e1o qua th\u1eddi gian.<\/p>\n

C\u00e1c h\u1ec7 sinh th\u00e1i \u0111\u01b0\u1ee3c t\u00e1i hi\u1ec7n t\u1eeb nh\u1eefng m\u1eabu v\u1eadt n\u00e0y t\u01b0\u01a1ng \u1ee9ng v\u1edbi v\u00f9ng Beringia ph\u00eda \u0111\u00f4ng, m\u1ed9t khu v\u1ef1c t\u1eebng c\u00f3 h\u1ec7 \u0111\u1ed9ng th\u1ef1c v\u1eadt hi\u1ec7n \u0111\u00e3 tuy\u1ec7t ch\u1ee7ng trong k\u1ef7 Pleistocen. C\u00e1c lo\u00e0i th\u1ef1c v\u1eadt th\u1ed1ng tr\u1ecb bao g\u1ed3m c\u00e1c lo\u1ea1i c\u1ecf, c\u00e2y li\u1ec5u v\u00e0 c\u00e2y b\u1ea1ch d\u01b0\u01a1ng l\u00f9n, trong khi c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt g\u1ed3m voi ma m\u00fat, b\u00f2 r\u1eebng, ng\u1ef1a, c\u0169ng nh\u01b0 c\u00e1c lo\u00e0i s\u0103n m\u1ed3i nh\u01b0 s\u01b0 t\u1eed M\u1ef9 ho\u1eb7c b\u00e1o M\u1ef9, nh\u1eefng lo\u00e0i hi\u1ec7n \u0111\u00e3 tuy\u1ec7t ch\u1ee7ng. Coprolit th\u1eadm ch\u00ed c\u00f2n ti\u1ebft l\u1ed9 d\u1ea5u v\u1ebft c\u1ee7a k\u00fd sinh tr\u00f9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 giun tr\u00f2n, cho th\u1ea5y nh\u1eefng t\u01b0\u01a1ng t\u00e1c sinh th\u00e1i ph\u1ee9c t\u1ea1p.<\/p>\n

Nghi\u00ean c\u1ee9u cho th\u1ea5y nh\u1eefng hang \u1ed5 c\u1ee7a s\u00f3c \u0111\u1ea5t, th\u01b0\u1eddng b\u1ecb b\u1ecf qua trong l\u0129nh v\u1ef1c c\u1ed5 gen, l\u00e0 m\u1ed9t ngu\u1ed3n t\u00e0i nguy\u00ean v\u00f4 song \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 \u0111\u1ed9ng l\u1ef1c sinh th\u00e1i v\u00e0 ti\u1ebfn h\u00f3a c\u1ee7a k\u1ef7 \u0110\u1ec7 T\u1ee9. Ph\u00e2n t\u00edch ch\u00fang c\u00f3 th\u1ec3 c\u00e1ch m\u1ea1ng h\u00f3a hi\u1ec3u bi\u1ebft c\u1ee7a ch\u00fang ta v\u1ec1 s\u1ef1 th\u00edch nghi c\u1ee7a c\u00e1c lo\u00e0i tr\u01b0\u1edbc nh\u1eefng thay \u0111\u1ed5i kh\u00ed h\u1eadu trong qu\u00e1 kh\u1ee9, mang l\u1ea1i nh\u1eefng b\u00e0i h\u1ecdc qu\u00fd gi\u00e1 cho t\u01b0\u01a1ng lai. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u nh\u1ea5n m\u1ea1nh r\u1eb1ng nh\u1eefng kho l\u01b0u tr\u1eef t\u1ef1 nhi\u00ean n\u00e0y, \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n trong l\u1edbp \u0111\u1ea5t \u0111\u00f3ng b\u0103ng v\u0129nh c\u1eedu, c\u00f3 th\u1ec3 c\u00f2n \u1ea9n ch\u1ee9a nhi\u1ec1u b\u00ed m\u1eadt v\u1ec1 cu\u1ed9c s\u1ed1ng th\u1eddi ti\u1ec1n s\u1eed.<\/p>\n

“`<\/p>\n

\n

Sources officielles<\/h2>\n

\u00c9tude de r\u00e9f\u00e9rence<\/h3>\n

DOI\u00a0:<\/strong> https:\/\/doi.org\/10.1038\/s41467-026-72977-6<\/a><\/p>\n

Titre\u00a0:<\/strong> Ground squirrel coprolites preserve complex archives of ancient environmental DNA over 700,000 years<\/p>\n

Revue : <\/strong> Nature Communications<\/p>\n

\u00c9diteur : <\/strong> Springer Science and Business Media LLC<\/p>\n

Auteurs : <\/strong> Tyler J. Murchie; Scott L. Cocker; Sina Baleka; Nicola Alexandra Vogel; Libby Natola; Emil Karpinski; Diana Tirlea; McIntyre A. Barrera; Danielle M. Grant; Evan Morien; George S. Long; Linda Y. Rutledge; Grant D. Zazula; Britta J. Jensen; Duane G. Froese; Hendrik N. Poinar<\/p>\n","protected":false},"excerpt":{"rendered":"

“`html Ph\u00e2n h\u00f3a th\u1ea1ch c\u1ee7a s\u00f3c \u0111\u1ea5t ti\u1ebft l\u1ed9 700.000 n\u0103m l\u1ecbch s\u1eed m\u00f4i tr\u01b0\u1eddng Nh\u1eefng hang \u1ed5 c\u1ee7a s\u00f3c \u0111\u1ea5t \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n trong l\u1edbp \u0111\u1ea5t \u0111\u00f3ng b\u0103ng v\u0129nh c\u1eedu \u1edf Yukon, Canada, ch\u1ee9a \u0111\u1ef1ng nh\u1eefng m\u1eabu ph\u00e2n h\u00f3a th\u1ea1ch c\u00f3 tu\u1ed5i \u0111\u1eddi h\u00e0ng tr\u0103m ng\u00e0n n\u0103m. Nh\u1eefng di t\u00edch n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0… Continue reading Ph\u00e2n h\u00f3a th\u1ea1ch c\u1ee7a s\u00f3c \u0111\u1ea5t ti\u1ebft l\u1ed9 700.000 n\u0103m l\u1ecbch s\u1eed m\u00f4i tr\u01b0\u1eddng<\/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":[4,5],"tags":[],"class_list":["post-17","post","type-post","status-publish","format-standard","hentry","category-moi-truong","category-quoc-te","entry"],"_links":{"self":[{"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/posts\/17","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/comments?post=17"}],"version-history":[{"count":1,"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/posts\/17\/revisions"}],"predecessor-version":[{"id":18,"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/posts\/17\/revisions\/18"}],"wp:attachment":[{"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/media?parent=17"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/categories?post=17"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/journalofspace.com\/vi\/wp-json\/wp\/v2\/tags?post=17"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}