Morphologic And Molecular Phylogenesis Of Nassariids (Gastropoda: Stenoglossa: Nassariidae) In Fujian Coast

Nassariids is a group animal of Family Nassariidae belonging to Order Stenoglossa, Subclass Prosobrachia, Class Gastropoda, Phylum Mollusca. They are eurythermal and euryhaline species and live in all sea waters in the world. Up to now, 286 species have been recorded in the world. There are more species of nassariids in coastal areas in southern China than in northern China. It is a long history that people eat nassariids for its delicious taste. But some species of nassariids have toxicity and many poisoning incidents often happened with eating nassariids in recent years. There is no taxonomic key for Nassariidae in China and many peoples identify nassariids by a collection of illustrative plates and descriptions. Comparing nassariids in Taiwan and Fujian coasts, we find homogeneity with different name and homonymy with different species. Studies on morphological classification and molecular phylogeny of nassariids in Fujian Coast are important and necessary to provide a taxonomic key for residenter and marine manager, and to prevent poisoning incidents.We observed shell and radula form of nassariids, and adopted molecular marker method to determine 18S rDNA sequence of nassariids in Fujian Coast. The main results are as follow:1. Form characteristics of 15 species of nassariids from Fujian Coast were described. Comparing to historical datas, we found 2 species of them were no recorded in Fujian Coast and 2 species of them were new. Two new species are Nassarius parasuccinctus and Nassarius xiajinensis.2. The shell characteristics of nassariids were number format, and then multivariable software was used to analyze the number format. Then taxonomic key...