AUTHOR=Lv Jianjian , Sun Dongfang , Yan Deping , Ti Xingbin , Liu Ping , Li Jian 

TITLE=Quantitative Trait Loci Mapping and Marker Identification for Low Salinity Tolerance Trait in the Swimming Crab (Portunus trituberculatus)

JOURNAL=Frontiers in Genetics

VOLUME=10

YEAR=2019

URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2019.01193

DOI=10.3389/fgene.2019.01193

ISSN=1664-8021

ABSTRACT=<p>Low salinity is one of the most important abiotic factors that directly affect the abundance of the swimming crab, <italic>Portunus trituberculatus</italic>. Quantitative trait loci (QTL) mapping could be helpful in identifying the markers and genes involved in low salinity tolerance. In this study, two QTLs of low salt tolerance were mapped on linkage group 17 (LG17, 2.6–5.2 cM) based on a high-density linkage map. Ninety-five markers related to low salinity tolerance were identified <italic>via</italic> association analysis, and seventy-nine low salt-related candidate genes (including ammonium transport, aldehyde dehydrogenase, and glucosyltransferase) were screened from draft genome of the species <italic>via</italic> these markers. This represents the first report of QTL mapping for low salinity tolerance in the swimming crab, which may be useful to elucidate salinity adaptation mechanisms.</p>