Hawai'i Cooperative Studies Unit, University of Hawai'i at Hilo.
Edward Via College of Osteopathic Medicine, Blacksburg, Virginia.
Genome Biol Evol. 2020 Sep 1;12(9):1504-1514. doi: 10.1093/gbe/evaa137.
We examine the genetic history and population status of Hawaiian hoary bats (Lasiurus semotus), the most isolated bats on Earth, and their relationship to northern hoary bats (Lasiurus cinereus), through whole-genome analysis of single-nucleotide polymorphisms mapped to a de novo-assembled reference genome. Profiles of genomic diversity and divergence indicate that Hawaiian hoary bats are distinct from northern hoary bats, and form a monophyletic group, indicating a single ancestral colonization event 1.34 Ma, followed by substantial divergence between islands beginning 0.51 Ma. Phylogenetic analysis indicates Maui is central to the radiation across the archipelago, with the southward expansion to Hawai'i and westward to O'ahu and Kaua'i. Because this endangered species is of conservation concern, a clearer understanding of the population genetic structure of this bat in the Hawaiian Islands is of timely importance.
我们通过对单核苷酸多态性的全基因组分析，利用从头组装的参考基因组进行映射，研究了夏威夷银灰色蝙蝠（Lasiurus semotus）的遗传历史和种群状况。这是地球上最孤立的蝙蝠，以及它们与北方银灰色蝙蝠（Lasiurus cinereus）的关系。基因组多样性和分化的特征表明，夏威夷银灰色蝙蝠与北方银灰色蝙蝠不同，形成一个单系群，表明在 134 万年前有一次单一的祖先殖民事件，随后在 51 万年前开始在岛屿之间发生大量分化。系统发育分析表明，毛伊岛是整个群岛辐射的中心，向南扩展到夏威夷，向西扩展到瓦胡岛和考艾岛。由于这种濒危物种受到保护，因此及时了解夏威夷群岛中这种蝙蝠的种群遗传结构具有重要意义。
