秘魯屎殼郎改變口味 放棄吃屎改食蜈蚣等千足蟲
文章來源: 路小川 於
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普通屎殼郎以吃屎為生。
研究人員發現,秘魯一種學名Deltochilum
Valgum的蜣螂(俗稱屎殼郎)提高“生活品位”,放棄吃屎,改食包括蜈蚣在內的千足蟲。
本周出版的英國《生物書簡》發表研究報告說,食蜈蚣屎殼郎為蜣螂中唯一體現“獵殺者”素質的種類。它們在捕食過程中對千足蟲實施“斬首”。
科學家發現,這種體長一般僅7至8毫米的屎殼郎偏好攻擊比自己遠為龐大的對手。它們所獵殺的千足蟲往往體長25至110毫米。完成獵殺後,這種屎殼郎一般不在現場進食,而是將戰利品運往別處享用。
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