First report of epizoic diatom <i>Pseudohimantidium pacificum</i> on copepod <i>Corycaeus affinis</i> from North Eastern Arabian Sea

Abstract

Marine epizoic diatom, <i>Pseudohimantidium pacificum</i> Hustedt and Krasske 1941, on copepod <i>Corycaeus affinis<i> is reported for the first time in North Eastern Arabian Sea. It was found attached exclusively to copepod <i>C. affinis</i>. Light Microscope and Scanning Electron Microscopic studies were made to examine the frustule morphology. With the present report from the North Eastern Arabian Sea, the biogeographic boundary of this species can be extended to the Indian waters.