[新聞] 史上首見... 椰子蟹獵殺分屍海鳥 研究員嚇呆消失
1.媒體來源:
自由
2.完整新聞標題:
史上首見... 椰子蟹獵殺分屍海鳥 研究員嚇呆
3.完整新聞內文:
〔即時新聞/綜合報導〕美國達特茅斯學院(Dartmouth College)研究員萊德爾(Mark
Laidre),前往印度洋查戈斯群島(Chagos Islands)觀察椰子蟹生態時,驚見這種陸地
上最大的無脊椎甲殼動物,竟然獵殺海鳥並分屍,是史上首次觀察到椰子蟹有獵捕大型脊
椎動物的行為。
據《衛報》報導,萊德爾透露,當時椰子蟹爬上一棵樹,在靠近地面的樹枝上,襲擊在巢
中的海鳥。萊德爾說,螃蟹折斷了鳥兒的翅膀,迫使牠掉落在地上,緊接著椰子蟹用螯抓
住海鳥的身體,把牠的另一隻翅膀折斷,讓牠無法動彈。
萊德爾回憶,隨後其他椰子蟹開始聚集,並分屍海鳥,現場的景象非常可怕。椰子蟹可達
四公斤重,身寬可到一公尺。牠們在印度洋和太平洋的珊瑚環礁中很常見,往往可成為附
近環境中最大的動物。
椰子蟹過去被認為在生態中擔任清道夫的角色,這種主動捕殺大型脊椎動物的行為從未見
過。萊德爾的發現,對釐清椰子蟹如何影響島嶼環境有著重要的影響,椰子蟹也許能主宰
當地生態系統,並可能阻止其他動物例如海鳥,在牠們所在的島嶼上築巢。
萊德爾進一步的調查證實了上述假設,他發現鳥類不太可能築巢在椰子蟹居住的島嶼上,
反之亦然。至於獵殺海鳥是普遍行為還是偶然,仍有待觀察。萊德爾計畫在螃蟹洞穴入口
處設置攝影機,以便紀錄影像並查明真相。
https://www.youtube.com/watch?v=InAG_7w0T90
4.完整新聞連結 (或短網址):
http://news.ltn.com.tw/news/world/breakingnews/2251086
5.備註:
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