Diseases of chaetognaths from the Arabian Sea

Abstract

Three different diseases, provisionally assigned as spot disease, swell disease and tail rot disease, were observed in chaetognaths Sagitta enflata Grassi and S. bedoti Bernaneck. The first two diseases showed high percentage of occurrence. The spot disease is causEd. by fungi and the tail disease is by bacteria. The cause of swell disease is not yet known. The present report on the disease of chaetognaths is recorded for the first time from the Arabian Sea