Phylogeographical analysis of an estuarine fish, Salanx ariakensis (Osmeridae: Salanginae) in the north‐western Pacific

Abstract

This study extended the geographic coverage of a previous study to explore population genetic structure and demographic history in the Ariake icefish Salanx ariakensis from three populations of continental coastlines and one island population in the north-western Pacific based on a partial sequence of the mitochondrial cytochrome b gene. The S. ariakensis showed high genetic diversity and strong genetic structure. Phylogenetic analysis showed a shallow gene tree with no clear phylogeographical structure. Contiguous range expansion and restricted gene flow were inferred to be main population events by nested-clade analysis. Significant genetic differentiations between populations could be attributable to negligible gene flow by coalescent analysis. High nucleotide diversity of each population was due to geographic mixing of heterogenous haplotypes during lowering sea levels of the Pleistocene. These findings indicate that cycles of geographic isolation and secondary contact happened in the Pleistocene glacial-interglacial cycles shaping genetic structure and population demography of S. ariakensis.

Invasive Cyprinid Fish in Europe Originate from the Single Introduction of an Admixed Source Population Followed by a Complex Pattern of Spread

“…Although the literature on this subject is relatively limited, it seems clear that high tectonic activity and sea level changes during the Pleistocene have created a complex phylogeographic pattern with little concordance among species [64]. Nevertheless, studies on other freshwater fish, such as Hemibarbus lameo [65] and Salanx ariakensis [66], found evidence that secondary contact between diverged populations from different major river systems took place during low sea levels at the end of the Pleistocene. Furthermore, the geographic area around the Hai He River basin represents a natural secondary contact zone between divergent phylogeographic lineages of the estuarine, flathead mullet ( Mugil cephalus ) [67], [68].…”

Modelling the potential impacts of climate change on the distribution of ichthyoplankton in the Yangtze Estuary, China

“…In China, this species is mainly distributed in the Bohai Sea, the Yellow Sea and the East China Sea. Salanx ariakensis is an annual fish distributed in estuaries and adjacent coasts from the Yellow Sea to the East China Sea (Hua et al, ). Chelidonichthys spinosus is an offshore warm temperature fish which could be found in China coastline, representing a keystone element in the marine ecosystem food web (Li, Xu, Jiang, & Zhu, ).…”

Population panmixia and the Pleistocene demographic expansion of spotty belly greenling Hexagrammos agrammus in the East Sea and Northwest Pacific

“…On the other hand, climate change and the high salinity warm Kuroshio currents could also have caused population differentiation for some fishes in the Korea and Japan coastal waters. The Japanese sand lance Ammodytes personatus demonstrates two distinct genetic lineages between the north and the south populations (Han et al 2012) and an estuarine fish, Salanx ariakensis, shows population structure between Jindo, Korea and Ariake Bay, Japan (Kim et al 2006;Hua et al 2009) even within a short distance. Gizzard shad Konosirus punctatus and olive flounder Paralichthys olivaceus also exhibit separate lineages in the East Sea and the southern and west coast of Korea, respectively (Kim et al 2010;Gwak et al 2014).…”

“…E-mail: ylee@kiost.ac Article in Sakhalin and north of Iwate, Japan, and the south populations around Korea and south of Miyagi, Japan, which was attributed to isolation of the East Sea from the Pacific during glacial periods (Han et al 2012). An estuarine fish, Salanx ariakensis, living in estuaries but migrating to freshwater areas for spawning reveals a population structure even within the short distance between Jindo in the southern coast of Korea and Ariake Bay in Kumamoto, Japan, whose separation is effected by a saline front (> 33.5 psu) (Kim et al 2006;Hua et al 2009). Gizzard shad Konosirus punctatus and olive flounder Paralichthys olivaceus seem to have separate lineages in the East Sea and the southern and west coast of Korea, respectively, probably due to the isolation of the East Sea during glacial periods and sea currents at the present time (Kim et al 2010;Gwak et al 2014).…”