Complete mitochondrial genome of the freshwater fish Acrossocheilus longipinnis (Teleostei: Cyprinidae): genome characte
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ORIGINAL ARTICLE
Complete mitochondrial genome of the freshwater fish Acrossocheilus longipinnis (Teleostei: Cyprinidae): genome characterization and phylogenetic analysis Xiao-Jing Hou 1,2,3 & Hung-Du Lin 4 & Wen-Qiao Tang 1,2,3 & Dong Liu 1,2,3 & Chiao-Chuan Han 5,6 & Jin-Quan Yang 1,2,3 Received: 2 July 2019 / Accepted: 23 January 2020 # Institute of Zoology, Slovak Academy of Sciences 2020
Abstract The genus Acrossocheilus is composed of small- to medium-sized barbine species and is distributed in Laos, Vietnam, Hainan, Taiwan and mainland China. To verify the molecular phylogeny of the genus Acrossocheilus, we report a new whole mitogenome of A. longipinnis, which provides new insights to better understand the taxonomic status of Acrossocheilus fishes. Phylogenetic trees presented two major clades based on whole mitogenomic data from sixteen Acrossocheilus species. Clade I is the ancestral group, including A. monticola and A. yunnanensis. The remaining species form clade II, which can be separated into two subclades (subclades A and B) with strong support. Subclade B clusters indicate that A. longipinnis forms a monophyletic group with A. iridescens and A. barbodon. Landscape evolution can strongly affect the evolutionary diversification of freshwater fishes. The Nanling and Wuyi Mountains, Taiwan Strait and Qiongzhou Strait played a key role in the geographical barriers for Acrossocheilus diversification. Our results improve our understanding of Acrossocheilus mitogenome structure and evolution, which will be useful for phylogenetic analysis and species identification. Keywords Acrossocheilus longipinnis . Cyprinid . Mitogenome . Phylogeny
Introduction The cyprinid genus Acrossocheilus Oshima, 1919 comprises 26 valid species distributed in Taiwan, Hainan, mainland China and Southeast Asia (Froese and Pauly 2019). The genus Xiao-Jing Hou and Hung-Du Lin contributed equally to this work. * Jin-Quan Yang [email protected] 1
Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China
2
Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution (Shanghai Ocean University), Shanghai, China
3
National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
4
The Affiliated School of National Tainan First Senior High School, Tainan 701, Taiwan
5
National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan
6
Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan
Acrossocheilus is composed of small- to medium-sized barbine species characterized primarily by the possession of a medially interrupted lower lip with two thick lateral lobes anteriorly separated from the lower jaw by a groove running along the full length of the lower jaw (Yue 2000). Among these species, five are distributed in Laos and Vietnam, and the others are found in Hainan, Taiwan and mainland China (Froese and Pauly 2019). The t
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