Study On The Morphology And Genetics Of Sand Lance Populations

The sand lance, Ammodytes personatus Girard,as a cold-temperate species, is widely distributed in the Bo Sea, the northern Yellow Sea, Korea Peninsula, Janpan and the Russian Far East Sea. Besides A. personatus, A.hexaperus also exits in the coast of Janpan. Six sand lance-populations from Qingdao,A~-omori,Hokkaido,Kagawa,Aichi and Fukuoka were analyzed by using morphology and isozyme methods,furthermore, Mitochondrial COI gene fragment among A.hexaperus and A. personatus,were studied, expecting tosupply some base data for domestic study and discuss the population relation between Qingdao coast and those from Janpan coast. The main results of this paper were listed below:By morphology way, meristic counts displayed, dorsal fin rays,pectoral fin rays,anal fin rays,vertebra numbers,gill reker numbers showed difference among six populations, so, these characters could be according to classify the populations. The average dorsal fin rays,pectoral fin rays,anal fin rays,vertebra numbers,gill reker numbers among Qingsen and Beihaidao were 57,14,31,65,27, the other four populations were 54—56,14,29—30,63—64,20—22.Variables analysis results displayed, among 11 variables,BL/BW,PL/ED, CPL/CPW, EI/ED showed obvious difference in six populations. These could be according to classify the populations.Dendrograms on meristic and variables both showed, the six populations were divided into two groups,Qingsen and Beihaidao populations as a group,the other as a group.All the six population were supposed to belong A. personatus, by compareing wih the study of Janpan scholars.Isozyme analysis showed, no polymorphic loci were found among Xiangchuan, Aizhi and Qingdao populations, which indicatesd the genetic configuration were...