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当前位置: Science » 植物&动物 » Science:海豚母亲如何与小海豚重聚


标签:海豚 呼叫 口哨
摘要 : 试想一下,当你想要让孩子注意时,你会叫他们,但却不是叫他们的名字,而是叫你自己的名字。

试想一下,当你想要让孩子注意时,你会叫他们,但却不是叫他们的名字,而是叫你自己的名字。原来宽吻母海豚们就是这么做的。它们用的是“签名口哨”,即高亢且个性化的呼叫,作用类似于人类的名字。科学家们自20世纪90年代起就知道这些口哨。但这是他们第一次证实,母海豚用这些口哨声来召唤她们的孩子回家。为了做到这一点,行为生物学家使用手势和语言信号让一只人工圈养的宽吻海豚Merina从几米外的一个海水泻湖把她的玩具或她的孩子Windley带回来。当Merina取玩具时,29次试验里她只吹了三次口哨。但当这只海豚妈妈去带回她的孩子时,30次试验中她吹了30多次口哨。研究小组在2016年5月号的《行为过程》杂志上报告了这一发现。 随后的谱图分析证实这些就是签名口哨,通过海豚气孔附近的组织振动而产生。尽管这是首次证实海豚的动机和交流之间存在联系的研究,一些生态学家仍质疑其有效性,因为这些海豚被人为地分开,且雌海豚的这种行为方式经过了引导。如果我们能问问Merina和Windley它们是怎么想的就好了!


How dolphin moms reunite with their babies


Imagine if, when you wanted to get your kid’s attention, you called them—not by their name—but by your own. It turns out that bottlenose dolphin mothers do just that. They use “signature whistles,” high-pitched, individualized calls, which function like human names. Scientists have known about these whistles since the 1990s. But now for the first time, they have confirmed that moms use the whistles to call their babies home. To do so, behavioral biologists used hand and verbal signals to ask a captive bottlenose dolphin, Merina, to retrieve either a toy or her calf, Windley, from a few meters away, in a seawater lagoon. When Merina retrieved a toy, she whistled in just three of 29 trials. But when the mother dolphin went to retrieve her calf, she whistled in over 30 of 50 trials, the group reports in the May 2016 Behavioural Processes. Later spectrogram analysis confirmed they were signature whistles, produced through tissue vibrations near the blowhole. While the study is the first to confirm this link between dolphin motivation and communication, some ecologists question its validity, since the dolphins were artificially separated and the female was directed to behave a certain way. Now, if only we could ask Merina and Windley what they think!

来源: Science 浏览次数:0


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