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「物競天擇」理論發源地 發現新種老鼠
Sep 23rd 2013, 06:01

科學家在印尼發現新品種的老鼠,研究人員分析DNA,確定老鼠不僅是新種,而且是新屬。巧合的是,發現新老鼠的地方就是「物競天擇」理論的發源地。

印尼多家媒體指出,來自丹麥哥本哈根大學和印尼當地的研究團隊在北摩鹿加(North Maluku)哈馬赫拉島(Halmahera)的偏遠山區發現這種老鼠。研究團隊拿花生醬做誘餌,在樹幹和洞口設陷阱,已捕捉6隻。

新種老鼠背上有粗糙的棕灰色皮毛,腹部呈灰白色,白尖尾,有3對乳頭。

研究人員分析老鼠的DNA、頭蓋骨和牙齒,確定不僅是新種,而且是新屬。這一發現已經在「林奈學會動物學期刊」(Zoological Journal of the Linnean Society)上發表。

由於新種老鼠在博基麥考特(Boki Mekot)山區發現,研究團隊命名哈馬赫拉博基麥考特鼠(Halmaheramys bokimekot)。

領導研究的哥本哈根大學學者法伯(Pierre-HenriFabre)指出,這種新齧齒動物顯示,這個地區存在大量未知的生物多樣性以及保護當地生物的重要性。

新老鼠的發現地曾經是進化論的發源地之一。1858年,英國博物學家華勒斯(Alfred Russel Wallace)在這裡寫信給達爾文,初步闡述他對新物種發展的觀點。兩人因此合作提出「物競天擇」理論。

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MSN 新聞 - 國際新聞
MSN 新聞 - 國際新聞 
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委內瑞拉總統跟中國簽署12項經貿協議
Sep 23rd 2013, 11:20

委內瑞拉總統馬杜洛訪問中國,跟中國簽署12項經貿協議。

大陸媒體說,這些協議總價高達70億美元,涵蓋石油,農業,港口建設,教育等等。

報導說,馬杜洛當選委內瑞拉總統後,第一次出國訪問就選擇中國,顯示他希望獲得中國經援,促進委內瑞拉經濟發展。

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內容來源 : 中廣新聞網 更新日期 : 2013/9/23 19:20

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Sep 23rd 2013, 05:24

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