{"id":17004,"date":"2020-01-13T04:33:31","date_gmt":"2020-01-13T04:33:31","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=17004"},"modified":"2020-01-13T04:33:31","modified_gmt":"2020-01-13T04:33:31","slug":"great-reed-warblers-winter-singing-practice","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/biology\/great-reed-warblers-winter-singing-practice\/","title":{"rendered":"Chim h\u1ecda mi l\u1edbn: Luy\u1ec7n t\u1eadp h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng \u0111\u1ec3 th\u00e0nh c\u00f4ng v\u00e0o m\u00f9a xu\u00e2n"},"content":{"rendered":"

Chim h\u1ecda mi l\u1edbn: Luy\u1ec7n t\u1eadp h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng \u0111\u1ec3 th\u00e0nh c\u00f4ng v\u00e0o m\u00f9a xu\u00e2n<\/h2>\n\n

H\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng: Th\u00f3i quen \u0111\u00e1ng ng\u1ea1c nhi\u00ean<\/h2>\n\n

Trong khi nhi\u1ec1u lo\u00e0i chim di c\u01b0 v\u1ec1 ph\u00eda nam v\u00e0o m\u00f9a \u0111\u00f4ng \u0111\u1ec3 tr\u1ed1n tr\u00e1nh \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t, m\u1ed9t s\u1ed1 lo\u00e0i nh\u01b0 h\u1ecda mi l\u1edbn l\u1ea1i c\u00f3 m\u1ed9t th\u00f3i quen m\u00f9a \u0111\u00f4ng \u0111\u1ed9c \u0111\u00e1o: h\u00f3t.<\/p>\n\n

T\u1ea1i sao l\u1ea1i h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng?<\/h2>\n\n

C\u00e1c nh\u00e0 khoa h\u1ecdc t\u1eeb l\u00e2u \u0111\u00e3 th\u1eafc m\u1eafc t\u1ea1i sao chim l\u1ea1i h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng, khi ch\u00fang kh\u00f4ng sinh s\u1ea3n. M\u1ed9t gi\u1ea3 thuy\u1ebft cho r\u1eb1ng ti\u1ebfng h\u00f3t gi\u00fap chim tr\u1ed1ng b\u1ea3o v\u1ec7 l\u00e3nh th\u1ed5 c\u1ee7a m\u00ecnh. Tuy nhi\u00ean, nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng h\u1ecda mi l\u1edbn h\u00f3t m\u1ed9t lo\u1ea1i b\u00e0i h\u00e1t kh\u00e1c v\u00e0o m\u00f9a \u0111\u00f4ng so v\u1edbi b\u00e0i h\u00e1t trong m\u00f9a sinh s\u1ea3n.<\/p>\n\n

Testosterone v\u00e0 h\u00e0nh vi h\u00f3t<\/h2>\n\n

Testosterone l\u00e0 m\u1ed9t lo\u1ea1i hormone li\u00ean quan \u0111\u1ebfn h\u00e0nh vi h\u00f3t \u1edf chim. Trong m\u00f9a sinh s\u1ea3n, nh\u1eefng con chim tr\u1ed1ng c\u00f3 n\u1ed3ng \u0111\u1ed9 testosterone cao h\u01a1n s\u1ebd h\u00f3t nh\u1eefng b\u00e0i h\u00e1t ph\u1ee9c t\u1ea1p h\u01a1n. Tuy nhi\u00ean, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n ra r\u1eb1ng nh\u1eefng con h\u1ecda mi l\u1edbn h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng kh\u00f4ng c\u00f3 n\u1ed3ng \u0111\u1ed9 testosterone cao h\u01a1n nh\u1eefng con im l\u1eb7ng.<\/p>\n\n

Luy\u1ec7n t\u1eadp cho m\u00f9a xu\u00e2n<\/h2>\n\n

M\u1ed9t gi\u1ea3 thuy\u1ebft kh\u00e1c cho r\u1eb1ng ti\u1ebfng h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c luy\u1ec7n t\u1eadp cho m\u00f9a sinh s\u1ea3n. Chim h\u1ecda mi l\u1edbn \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 thay \u0111\u1ed5i ti\u1ebfng h\u00f3t c\u1ee7a ch\u00fang qua t\u1eebng n\u0103m, m\u1ed7i l\u1ea7n th\u00eam v\u00e0o m\u1ed9t \u00e2m ti\u1ebft m\u1edbi. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u tin r\u1eb1ng ti\u1ebfng h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng c\u00f3 th\u1ec3 gi\u00fap nh\u1eefng con chim tr\u1ed1ng ph\u00e1t tri\u1ec3n nh\u1eefng b\u00e0i h\u00e1t ph\u1ee9c t\u1ea1p v\u00e0 h\u1ea5p d\u1eabn h\u01a1n cho m\u00f9a xu\u00e2n.<\/p>\n\n

\u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a b\u00e0i h\u00e1t v\u00e0 m\u00e0u s\u1eafc b\u1ed9 l\u00f4ng<\/h2>\n\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u0169ng ph\u00e1t hi\u1ec7n ra r\u1eb1ng nh\u1eefng lo\u00e0i chim d\u00e0nh nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng l\u00e0 nh\u1eefng lo\u00e0i chim tr\u1ed1ng c\u00f3 b\u00e0i h\u00e1t sinh s\u1ea3n ph\u1ee9c t\u1ea1p nh\u1ea5t nh\u01b0ng l\u1ea1i c\u00f3 b\u1ed9 l\u00f4ng x\u1ec9n m\u00e0u nh\u1ea5t. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y r\u1eb1ng vi\u1ec7c luy\u1ec7n t\u1eadp c\u00f3 th\u1ec3 quan tr\u1ecdng h\u01a1n \u0111\u1ed1i v\u1edbi nh\u1eefng lo\u00e0i d\u1ef1a v\u00e0o ti\u1ebfng h\u00f3t c\u1ee7a ch\u00fang \u0111\u1ec3 thu h\u00fat b\u1ea1n t\u00ecnh h\u01a1n l\u00e0 ngo\u1ea1i h\u00ecnh c\u1ee7a ch\u00fang.<\/p>\n\n

C\u00e1c ch\u1ee9c n\u0103ng kh\u1ea3 thi kh\u00e1c<\/h2>\n\n

M\u1eb7c d\u00f9 luy\u1ec7n t\u1eadp l\u00e0 m\u1ed9t l\u1eddi gi\u1ea3i th\u00edch h\u1ee3p l\u00fd cho ti\u1ebfng h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng, nh\u01b0ng c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng nh\u1eefng giai \u0111i\u1ec7u n\u00e0y c\u00f2n c\u00f3 nh\u1eefng ch\u1ee9c n\u0103ng kh\u00e1c. V\u00ed d\u1ee5, ti\u1ebfng h\u00f3t c\u00f3 th\u1ec3 gi\u00fap chim tr\u1ed1ng thi\u1ebft l\u1eadp m\u1ed1i li\u00ean k\u1ebft x\u00e3 h\u1ed9i ho\u1eb7c b\u1ea3o v\u1ec7 ngu\u1ed3n t\u00e0i nguy\u00ean c\u1ee7a ch\u00fang.<\/p>\n\n

C\u00e2u h\u1ecfi c\u00f2n b\u1ecf ng\u1ecf<\/h2>\n\n

M\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 nhi\u1ec1u nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, nh\u01b0ng v\u1eabn c\u00f2n nhi\u1ec1u c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i \u0111\u00e1p v\u1ec1 ti\u1ebfng h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng \u1edf chim. V\u00ed d\u1ee5, kh\u00f4ng r\u00f5 chim h\u00f3t th\u01b0\u1eddng xuy\u00ean v\u00e0 to nh\u01b0 th\u1ebf n\u00e0o v\u00e0o m\u00f9a \u0111\u00f4ng, ho\u1eb7c li\u1ec7u ti\u1ebfng h\u00f3t m\u00f9a \u0111\u00f4ng c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i chim di tr\u00fa hay kh\u00f4ng.<\/p>\n\n

Quan \u0111i\u1ec3m kh\u00e1c nhau<\/h2>\n\n

C\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 nh\u1eefng quan \u0111i\u1ec3m kh\u00e1c nhau v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a ti\u1ebfng h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng. M\u1ed9t s\u1ed1 ng\u01b0\u1eddi tin r\u1eb1ng \u0111\u00e2y l\u00e0 m\u1ed9t ho\u1ea1t \u0111\u1ed9ng luy\u1ec7n t\u1eadp thi\u1ebft y\u1ebfu \u0111\u1ec3 sinh s\u1ea3n th\u00e0nh c\u00f4ng, trong khi nh\u1eefng ng\u01b0\u1eddi kh\u00e1c tin r\u1eb1ng ti\u1ebfng h\u00f3t c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 c\u00e1c ch\u1ee9c n\u0103ng kh\u00e1c ho\u1eb7c th\u1eadm ch\u00ed kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n

Nghi\u00ean c\u1ee9u trong t\u01b0\u01a1ng lai<\/h2>\n\n

C\u1ea7n nhi\u1ec1u nghi\u00ean c\u1ee9u h\u01a1n \u0111\u1ec3 hi\u1ec3u \u0111\u1ea7y \u0111\u1ee7 vai tr\u00f2 c\u1ee7a ti\u1ebfng h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng \u1edf chim. C\u00e1c nghi\u00ean c\u1ee9u trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 \u0111i\u1ec1u tra t\u1ea7n su\u1ea5t v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 h\u00f3t, t\u00e1c \u0111\u1ed9ng c\u1ee7a ti\u1ebfng h\u00f3t m\u00f9a \u0111\u00f4ng \u0111\u1ebfn th\u00e0nh c\u00f4ng sinh s\u1ea3n v\u00e0 ti\u1ec1m n\u0103ng c\u1ee7a c\u00e1c ch\u1ee9c n\u0103ng kh\u00e1c c\u1ee7a giai \u0111i\u1ec7u m\u00f9a \u0111\u00f4ng.<\/p>","protected":false},"excerpt":{"rendered":"

Chim h\u1ecda mi l\u1edbn: Luy\u1ec7n t\u1eadp h\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng \u0111\u1ec3 th\u00e0nh c\u00f4ng v\u00e0o m\u00f9a xu\u00e2n H\u00f3t v\u00e0o m\u00f9a \u0111\u00f4ng: Th\u00f3i quen \u0111\u00e1ng ng\u1ea1c nhi\u00ean Trong khi nhi\u1ec1u lo\u00e0i chim…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[22463,5068,97,99,252,22464],"class_list":["post-17004","post","type-post","status-publish","format-standard","hentry","category-biology","tag-great-reed-warblers","tag-bird-behavior","tag-science","tag-lifescienceart","tag-nature","tag-winter-singing"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/17004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=17004"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/17004\/revisions"}],"predecessor-version":[{"id":17005,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/17004\/revisions\/17005"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=17004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=17004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=17004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}