Description of a new thermal species of the genus Hyalella from Peru with molecular phylogeny of the family Hyalellidae (Crustacea, Amphipoda)
Description of a new thermal species of the genus Hyalella from Peru with molecular phylogeny of the family Hyalellidae (Crustacea, Amphipoda)
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秘鲁 Hyalella 属新热种的描述以及 Hyalellidae 科（甲壳纲、片足纲）的分子系统发育
DOI：
10.1071/is22060
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发表时间：
2023
影响因子：
2.2
通讯作者：
Arroyo Nilton Deza
中科院分区：
文献类型：
--
作者：
Tomikawa Ko;Kawasaki Yoshimi;Leiva Alfonso Miranda;Arroyo Nilton Deza
近年来，与全球变暖相关的水温上升对冷水淡水生物的影响已成为一个主要问题，了解支持温度限制的生理和生态因素对淡水生物的保护生物学至关重要。本文描述了采自秘鲁温泉Baños del印加卡哈马卡的一种嗜热透明端足类Hyalella yashmara sp. nov.，这可能有助于了解它们对高温的偏好。我们发现这个新物种可以生活在19.8至52.1°C的水温范围内，据我们所知，这是片脚类动物最高的栖息地温度。Hyalella yashmara sp. nov.与H. meinerti斯泰宾，1899年，来自秘鲁。然而，该新种与后者在第1和第2颚足类、胸骨鳃、第3尾足类和尾足类的特征上有所不同。本文还对Hyalella yashmara sp. nov.和秘鲁种进行了详细的形态学比较。我们的分子系统发育分析的基础上，核28 S rRNA和线粒体细胞色素c氧化酶亚基I（COI）基因序列强烈支持的单系Hyalellidae（=Hyalella）。由于发现Hyalellidae与Chiltoniidae形成姐妹群，这两个家庭被认为起源于一个共同的祖先，当南美洲，非洲和澳大利亚大陆合并为冈瓦纳大陆时，从海洋环境入侵淡水栖息地。我们的研究结果表明，南美的Hyalella物种不是单系的，北美的物种很可能与H共享最近的共同祖先。Yashmara sp. nov. ZooBank：urn：lsid：zoobank.org：act：190CFB16-7BE4-4786-A97F-0AFD8CD72DEA
In recent years, the impact of rising water temperatures associated with global warming on cold-water freshwater organisms has become a major issue, and understanding the physiological and ecological elements that support temperature limits is essential for the conservation biology of freshwater organisms. We describe a new species of thermophilic hyalellid amphipod, Hyalella yashmara sp. nov. from the Peruvian hot spring Baños del Inca Cajamarca and this could potentially contribute to understanding the high temperature preference of these. We found that this new species can live in water temperatures ranging from 19.8 to 52.1°C, that, to our knowledge, is the highest recorded habitat temperature of amphipods. Hyalella yashmara sp. nov. is most similar to H. meinerti Stebbing, 1899 from Peru. However, this new species differs from the latter in features of gnathopods 1 and 2, sternal gills, uropod 3 and telson. A detailed morphological comparison between Hyalella yashmara sp. nov. and Peruvian species is also provided. Our molecular phylogenetic analyses based on the nuclear 28S rRNA and mitochondrial cytochrome c oxidase subunit I (COI) gene sequences strongly support the monophyly of Hyalellidae (=Hyalella). Since Hyalellidae was found to form a sister group with Chiltoniidae, these two families were expected to have originated from a common ancestor that invaded freshwater habitats from marine environments when the continents of South America, Africa and Australia were united as Gondwana. Our findings suggest that the South American species of Hyalella are not monophyletic and that the North American species are likely to share a most recent common ancestor with H. yashmara sp. nov. ZooBank: urn:lsid:zoobank.org:act:190CFB16-7BE4-4786-A97F-0AFD8CD72DEA