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生物通
17 天
大西洋海雀初级飞羽换羽模式大揭秘:稳定同位素技术助力濒危物种 ...
来自加拿大的研究人员为探究大西洋海雀(Fratercula arctica)换羽模式,利用 δ 13 C 和 δ 15 N,发现其可能同步换羽或部分换羽,助于保护该物种。 换羽对于生物生存至关重要,但它消耗大量能量,在资源有限时,生物进化出将换羽与其他耗能活动在时间上分开的 ...
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