给潜水虱子喘息的空间

IF 13.9 1区 生物学 Q1 ECOLOGY
Vaishali Bhaumik
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引用次数: 0

摘要

海豹虱,也被称为潜水虱,是海洋哺乳动物的体外寄生虫。与大多数陆生昆虫不同,海豹虱已经进化出了呼吸适应能力,这使得它们能够在潜到海面以下数百或数千米深处的宿主身上长时间生存。发表在《通讯生物学》上的两项独立研究调查了两种海豹虱的水下呼吸适应性,这些呼吸适应性使它们能够在这些深度生存。在一项研究中,Preuss等人研究了寄生在真正的海豹身上的海豹虱子Echinophthirius horridus。先前的研究推测海豹虱依赖于一种板膜——一种疏水结构,在昆虫角质层周围保持一层空气膜——来进行水下呼吸。Preuss等人使用先进的成像技术、3d重建和浮力实验表明,骇鼠不具有板板。相反,它可能会在它的气管系统中储存一些氧气,并使用专门的螺旋关闭装置,并结合皮肤呼吸和减少新陈代谢(静止)来在水下生存。在另一篇论文中,Leonardi等人进行了形态学、生理学和基因组分析,研究了从南象海豹中采集的大角鳞虱(Lepidophthirus macrohini)成年和若虫的呼吸适应性。作者发现,这些海豹虱已经发展出一种有效的气孔封闭系统,即使在静水压力快速变化的情况下,也可以防止水进入它们的气管系统。在水下时,虱子不活动,以尽量减少代谢能量消耗和氧气消耗。一项对珠蛋白基因的系统发育分析表明,海豹虱的基因组中含有类似血红蛋白的基因,这可能赋予了它们在宿主潜水时储存氧气的能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Breathing room for diving lice
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来源期刊
Nature ecology & evolution
Nature ecology & evolution Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
22.20
自引率
2.40%
发文量
282
期刊介绍: Nature Ecology & Evolution is interested in the full spectrum of ecological and evolutionary biology, encompassing approaches at the molecular, organismal, population, community and ecosystem levels, as well as relevant parts of the social sciences. Nature Ecology & Evolution provides a place where all researchers and policymakers interested in all aspects of life's diversity can come together to learn about the most accomplished and significant advances in the field and to discuss topical issues. An online-only monthly journal, our broad scope ensures that the research published reaches the widest possible audience of scientists.
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