supported by research grants from the Science and Technology De-velopment Project of Weihai City(No.2018NS01);the In-dustrial Development Project of Qingdao City(No.20-3-4-16-nsh),and Guangxi Province(No.AA17204080-4).
Intraspecific diversity of molluscan species is usually studied based on maternally inherited mitochondrial DNA,from which only part of the evolutionary history can be reflected.Some nuclear ribosomal RNA genes such a...