致命禽鸟

加入我们的科学爱好者社区!

来源:杰克·邓巴彻

箭毒蛙可能现在不得不与另一种生物分享最可爱有毒生物的殊荣。根据今天发表在《美国国家科学院院刊》上的一份报告,研究人员已经确定,一种色彩鲜艳的新几内亚鸟类,即蓝冠伞鸟,也拥有与那些迷人的两栖动物相同的毒素,使其成为已知拥有此类毒素的第二个鸟类属。该研究还确定了来自这两个鸟类群体的物种的羽毛和皮肤中的几种新毒素。

同一批调查人员之前的研究结果表明,伞鸟属 (右图) 中的三种鸟类携带一种名为蝙蝠毒素的防御性毒素。 新的研究在列表中增加了另外两种伞鸟属物种,以及蓝冠伞鸟,并类似地扩展了蝙蝠毒素的种类。这两个鸟类群体都只在新几内亚被发现,并且长期以来一直被村民认为是 有毒的。事实上,科学家们报告说,在马当省的村民中,蓝冠伞鸟被称为“Slek-Yakt”,或“苦鸟”,如果食用或处理,已知会引起刺激。研究人员自己也体验了两种特别有效的伞鸟属物种的负面影响,在野外工作期间处理这些鸟类时,他们经历了打喷嚏和上呼吸道刺激。


支持科学新闻报道

如果您喜欢这篇文章,请考虑通过以下方式支持我们屡获殊荣的新闻报道: 订阅。通过购买订阅,您将帮助确保有关塑造我们当今世界的发现和想法的具有影响力的故事能够继续存在。


由于毒素水平在个体和物种之间差异很大,因此这些鸟类可能像箭毒蛙一样,从它们的饮食中获得这些毒素,而不是自己制造。但确切的来源仍然未知,因为尚未在这些鸟类的胃内容物或它们捕食的昆虫中检测到蝙蝠毒素物质。无论它们的来源是什么,它们似乎都是有效的威慑物,可以击退新几内亚的猎人,也可能击退其他掠食者。

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

More by Kate Wong
© . All rights reserved.