Population Genetic Studies Revealed Local Adaptation in a High Gene-Flow Marine Fish, the Small Yellow Croaker (Larimichthys polyactis)

• DOI: 10.1371/journal.pone.0083493
• Publication Date: 2013-12-13T01:18:32Z
• Authors: Le Wang; Shufang Liu; Zhimeng Zhuang; Liang Guo; Zining Meng; Haoran Lin
• Keywords: Local adaptation

The genetic differentiation of many marine fish species is low. Yet local adaptation may be common in as the vast and changing environment provides more chances for natural selection. Here, we used anonymous well known protein gene linked microsatellites mitochondrial DNA to detect population structure small yellow croaker (Larimichthys polyactis) Northwest Pacific marginal seas. Among these loci, detected at least two microsatellites, H16 HSP27 clearly under diversifying selection outlier tests. Sequence cloning analysis revealed that was located intron BAHCC1 gene. Landscape showed mutations were significantly associated with temperature, which further supported this locus. These marker types presented different patterns structure: (i) phylogeny no evidence divergence demonstrated only one glacial linage; (ii) using putatively neutral a pattern high flow L. polyactis. In addition, several barriers identified; (iii) by loci rather from loci. results above suggest croaker. summary, studies based on disentangle effects demographic history, migration, drift also provide valuable new insights design management strategies