Authentication of Nassodonta insignis H. Adams, 1867 (Gastropoda: Nassariidae) from the Kodungallur-Azhikode backwater, southwest coast of India using mitochondrial COI marker

Present study identifies Nassodonta insignis from brackish water environments of Kodungallur - Azhikode backwater and confirms the occurrence of the species in these localities with molecular data. Mitochondrial DNA COI sequences (KT985460, KT985461, KT985462, KT985463, KT985464) with 663 base pair length were developed for N. insignis. GenBank BLAST analysis shows 89% similarity with Nassarius (Varicinassa) variciferus and 44% bootstrap value in the Maximum Likelihood tree analysis.