Africa-Press – Madagascar. <\/strong><\/span>Avez-vous de\u0301ja\u0300 entendu parler de l\u2019i\u0302le de Madagascar ? Elle est tre\u0300s connue pour les espe\u0300ces ende\u0301miques qu\u2019elle abrite. Des chercheurs viennent justement de faire une nouvelle de\u0301couverte sur le sujet.<\/p>\nUne espe\u0300ce de tortue ge\u0301ante qui a disparu, il y au moins un mille\u0301naire, s\u2019est glisse\u0301 a\u0300 travers Madagascar. Une de\u0301couverte assez spe\u0301ciale e\u0301tant donne\u0301 que c\u2019e\u0301tait une espe\u0300ce inconnue, jusque-la\u0300.<\/p>\n
Comment les scientifiques ont-ils de\u0301couvert cette nouvelle espe\u0300ce de tortue ge\u0301ante ?<\/b><\/p>\n
C\u2019est en faisant des recherches sur la myste\u0301rieuse ligne\u0301e des tortues ge\u0301antes vivant sur l\u2019i\u0302le de Madagascar ainsi que dans d\u2019autres i\u0302les de l\u2019ouest de l\u2019oce\u0301an Indien que les experts ont de\u0301couvert cette espe\u0300ce.<\/p>\n
Ils sont tombe\u0301s sur le tibia d\u2019une tortue appartenant a\u0300 cette espe\u0300ce et l\u2019a analyse\u0301 a\u0300 l\u2019aide des me\u0301thodes modernes. L\u2019ADN nucle\u0301aire et mitochondrial de cet animal a prouve\u0301 qu\u2019il s\u2019agit bien d\u2019un nouveau spe\u0301cimen.<\/p>\n
Pour honorer la me\u0301moire de l\u2019herpe\u0301tologue et experts des tortues ge\u0301antes de l\u2019ouest de l\u2019oce\u0301an Indien, Roger Bour, les scientifiques ont de\u0301cide\u0301 d\u2019appeler ce dernier Astroschelys rogerbouri.<\/p>\n
Ces scientifiques n\u2019ont pas pu de\u0301terminer la date exacte de la disparition de ce spe\u0301cimen mais ils donnent une estimation de 1 000 ans. Karen Samonds, co-auteur de cette e\u0301tude publie\u0301e dans la revue Science Advances est tre\u0300s fie\u0300re de cette de\u0301couverte.<\/p>\n
\u00ab C\u2019est vraiment excitant de de\u0301couvrir un nouveau membre de la communaute\u0301 \u00bb, a-t-elle-de\u0301clare\u0301.<\/p>\n
![](\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/01\/postMediaimg_3_1-63caf6105f0c5.jpg\")
<\/p>\n
L\u2019avance\u0301e technologique permettra d\u2019approfondir les recherches<\/p>\n
\u00ab Au fur et a\u0300 mesure que nous obtenons une technologie ame\u0301liore\u0301e, nous sommes en mesure de fournir diffe\u0301rents types de donne\u0301es qui changent souvent notre point de vue \u00bb, a explique\u0301 Karen Samonds, tre\u0300s enthousiaste suite a\u0300 la de\u0301couverte.<\/p>\n
La technologie pourra en effet faire avancer les recherches sur les tortues ge\u0301antes qui se trouvent sur les i\u0302les volcaniques et les atolls coralliens de l\u2019ouest de l\u2019oce\u0301an Indien.<\/p>\n
De nos jours, pre\u0300s de 100 000 tortues ge\u0301antes vivent sur Aldabra, un atoll verdoyant au nord-ouest de Madagascar. Toutefois, plusieurs espe\u0300ces se sont aussi e\u0301teintes au fil du temps et les pale\u0301ontologues on du mal a\u0300 reconstituer l\u2019histoire de ses tortues disparues.<\/p>\n
Les scientifiques envisagent de continuer les recherches en analysant l\u2019ancien ADN de ces spe\u0301cimens ge\u0301ants. Les e\u0301tudes mene\u0301es par tous ces pale\u0301ontologues sont tre\u0300s importantes pour l\u2019humanite\u0301 parce qu\u2019elles nous permettent de comprendre le ro\u0302le cle\u0301 que ces animaux ont joue\u0301 sur l\u2019e\u0301cosyste\u0300me. Par Arielle Lovasoa<\/p>\n
Pour plus d’informations et d’analyses sur la Madagascar<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"Par Arielle Lovasoa Africa-Press – Madagascar. Avez-vous de\u0301ja\u0300 entendu parler de l\u2019i\u0302le de Madagascar ? Elle est tre\u0300s connue pour les espe\u0300ces ende\u0301miques qu\u2019elle abrite. Des chercheurs viennent justement de faire une nouvelle de\u0301couverte sur le sujet. Une espe\u0300ce de tortue ge\u0301ante qui a disparu, il y au moins un mille\u0301naire, s\u2019est glisse\u0301 a\u0300 travers […]<\/p>\n","protected":false},"author":82,"featured_media":12549,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,50,49],"class_list":["post-12550","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-madagascar","tag-madagascar"],"yoast_head":"\n
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