Low population differentiation revealed in the highly threatened elongate loach (Leptobotia elongata,Bleeker), a species endemic to the fragmented upper reaches of the Yangtze River |
| |
| Institution: | 1. School of Life Sciences, Jianghan University, Wuhan 430056, China;2. Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China;1. College of Agriculture, Shanxi Agricultural University, Jinzhong, Shanxi, 030801, PR China;2. Pomology Institute, Shanxi Academy of agricultural Sciences, Jinzhong, Shanxi, 030815, PR China;3. Institute of Plant Protection, Shanxi Academy of Agricultural Science, Taiyuan, Shanxi, 030801, PR China;1. Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Sciences, Sichuan University, Chengdu, 610065, PR China;2. Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, PR China;1. School of Pharmacy, University of Camerino, Italy;2. School of Bioscience and Veterinary Medicine, University of Camerino, Centro Ricerche Floristiche dell''Appennino, San Colombo, Barisciano, Italy;1. Department of Life Sciences, Cheng Kung University, Tainan 701, Taiwan;2. Taiwan Endemic Species Research Institute, ChiChi, Nantou 552, Taiwan;3. Department of Industrial Management, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;4. Tainan Hydraulics Laboratory, National Cheng Kung University, Tainan 709, Taiwan;5. Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan;6. The Affiliated School of National Tainan First Senior High School, Tainan 701, Taiwan;1. Department of Medical Genetics, Zunyi Medical University, Zunyi, China;2. School of Life Sciences, Datong University, Datong, China;3. College of Life Sciences, Jiangsu Normal University, Xuzhou, China |
| |
| Abstract: | The elongate loach (Leptobotia elongata) is a typical migratory fish that was formerly found in abundance throughout the upper and middle reaches of the Yangtze River but is now classified as a highly threatened fish on the China Species Red List. Here, a comparative study of microsatellite loci was performed to evaluate the genetic diversity and analyze the population structure in seven locations in the upper reaches of the Yangtze River, China. The results showed that genetic diversity of L. elongata is generally still at a high level. Populations from Xinshi, Panzhihua, Hechuan and Chishui, were found to have lower levels of genetic diversity than those that lived in Leshan, Yibin and Jiangjin. The IAM model indicated that populations from Panzhihua, Xinshi and Hechuan have undergone recent bottlenecks. AMOVA analysis revealed a small amount of differentiation among populations (3.6%), but most of the total variation occurred within populations (96.4%). Pairwise comparisons of populations confirmed a low population differentiation. STRUCTURE analysis showed no obvious genetic structure among populations, indicating that L. elongata living in the main stem of the river and its tributaries should be considered a single management unit. |
| |
| Keywords: | Microsatellite Genetic structure The upper reaches of the Yangtze River |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
