https://scholars.lib.ntu.edu.tw/handle/123456789/571889
標題: | Amphidromous but endemic: Population connectivity of Rhinogobius gigas (Teleostei: Gobioidei) | 作者: | Liao T.-Y Lu P.-L Yu Y.-H Huang W.-C JEN-CHIEH SHIAO Lin H.-D Jhuang W.-C Chou T.-K Li F. |
公開日期: | 2021 | 卷: | 16 | 期: | 2 | 來源出版物: | PLoS ONE | 摘要: | Rhinogobius gigas is an amphidromous fish endemic to eastern Taiwan. Fishes with the diadromous behavior are expected to have a broader distribution range and higher genetic homogeneity despite that some amphidromous fishes with limited distribution are observed and R. gigas is an additional exception with a limited distribution range. Rhinogobius gigas has been documented to be retained inshore near the river plume with a short pelagic larval duration of 30–40 days, which may account for the endemism of this species. The short marine larval stage of R. gigas may imply a population genetic structure and the aim of the present study is to test whether the population genetic structure is present in R. gigas. To test the population genetic structure, fragments of mitochondrial displacement loop and cytochrome c oxidase subunit I were sequenced to provide molecular inference for genetic structure among populations. Sixty-nine haplotypes were identified among 191 R. gigas from 10 populations of eastern Taiwan and the mean haplotype and nucleotide diversities for all samples were 0.956 and 0.0024, respectively, implying a bottleneck followed by a recent population expansion further supported by Fu’s Fs (-26.6; p < 0.001) and Tajima’s D (-1.5; p = 0.037) values. The phylogenetic analysis revealed lack of genetic structure and the bush-like median joining network without commonly shared haplotypes supports the same scenario. The genetic homogeneity is probably due to the amphidromous life history providing the opportunity for passive larval transportation among the rivers through coastal currents in eastern Taiwan. The endemism to eastern Taiwan may be a consequence of complicated interactions among short pelagic larval duration, interspecific competition and coastal currents. ? 2021 Liao et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101359024&doi=10.1371%2fjournal.pone.0246406&partnerID=40&md5=4a6c84a5a1667c9d25869d12af278325 https://scholars.lib.ntu.edu.tw/handle/123456789/571889 |
ISSN: | 19326203 | DOI: | 10.1371/journal.pone.0246406 |
顯示於: | 海洋研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。