Coastal Aquaculture and Mariculture (2+1)

PERNA INDICA

 

DISTINCTIVE CHARACTERS

Brown colour due to predominant brown colour of the periostracum. Stouter than Perna viridis, shell large, elongate, sub-trigonal in shape with anterior end angular and pointed. Dorsal margin angular, convex in middle; posterior margin broadly rounded. Surface covered with frim, horny brown periostracum. Attaches to rocks, piers and wharves by byssus threads. Distributed from south of Quilon to Kanyakumari on the west coast and along Tirunelveli coast in the east coast.