Biotoxicity in echinoderms

Abstract

Ten species of echinoderms viz. Holothuria atra, H. scabra, Bahadschia marmorata, Actinocucumls
\ntyphus, Pentoceraster regulus, Tropiometra carinata, Astropecten indiciis, Goniodiscaster scaber and
\nStomopnemtes variolaris have been screened for the biotoxicity of their various organs. Four series of
\nbioassays were carried out. They were tested for toxicity to Chanos and Tilapia fingerlings, toxicity
\nto mice and hemolytic activity. The gradation strongest to weakest toxic species is H. atra (both body
\nwall and viscera), B. marmorata (both body wall and cuvierian tubules), H. spinifera (both body wall
\nand viscera), H. scabra (body wall alone), P. regulus (body wall alone), A. typicus (body wall a lone), A.
\nindicus, H. scabra (viscera), P. regulus (viscera), S. variolaris (viscera), G. scaber, T. carinata and A.
\ntypicus. Further detailed analysis is being pursued on isolation aod characterisation in order to determine
\nthe variation In toxicity and the causative factor responsible for the same.