Nineteenth century tools made from sharks’ teeth suggest that two species of shark used to populate the Central Pacific but are no longer present.
Using artifacts from museums, a team of US researchers found that spot-tail and dusky sharks used to inhabit the reefs surrounding the Gilbert Islands.
The unusual historical data would help evaluate the success of ecological conservation measures, they added.
Photo: EPA
照片：歐新社
In their paper, the team from the Field Museum of Natural History, Chicago, and Columbia University, New York, said indigenous artifacts often represented an “under-utilized source of data.”
(Liberty Times)
十九世紀用鯊魚牙齒製作的工具，顯示兩種鯊魚原本生活在中太平洋，現在卻已不復存在。
利用博物館裡的工藝品，一支美國研究團隊發現，尾點鯊與灰真鯊原本居住在吉爾伯特島周邊的礁群中。
他們還說，這種稀奇的歷史資料，有助評估生態保育措施的成效。
在他們的報告中，這個來自芝加哥菲爾德自然史博物館與紐約哥倫比亞大學的團隊說，原生工藝品往往代表「未充分利用的資料來源」。
（自由時報／翻譯：自由時報國際新聞中心）
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