Effect of various organic nutrients on the reproductive rates of bacterivorous hymnostomes in a fresh water Canal, Shibin El-Koum, Menoufia, Egypt

The effect of adding two different organic materials; wheat extract and bactopeptone, was studied on some of the most abundant bacterivorous hymnostomes collected from freshwater canal in Shebin El-Koum, Monoufia. It was found that some of these ciliates prefer plant protein as wheat, others prefer animal protein as bactopeptone, someone have the ability to accommodate with both organic materials. A significant positive relationship between log doubling times and log cell volumes of these hymnostomes was confirmed

study of the protozoa associated with some harmful insects in the local environment

The present study includes finding resulting from examination of three species of harmful insects, Periplaneta americana, Schistocerca gregaria and Anacanthoterms ochraceus, collected from six cities in the Central Region of Saudi Arabia. Two species of septate gregarines of the genus Gregarina Dufor, were found G. blattarum [Siebold] from mid gut of P. americana and G. rigida from gut of S. gregaria, also six species of Mastigophora in gut of white ant A. ochraceus, Trichonympha campanula, Spirotrichonympha sp., Holomastigoides hartmanni, Rostronympha magna Monocercomonas axostylis and an unidentified species. The seasonal intensity of these Protozoa and percentage of infection together with information about, the holotype, materials are included. At present the holotype materials are deposited at the department of Zoology, Girls College of Education, Riyadh, Saudi Arabia

Digyalum oweni, gen nov sp nov, a new and unusual gregarin protozoan from the gut of mollusk littorina obtusata [prosobranchia: gastropoda]

Digyalum oweni, gen. nov., sp. nov., is described from the gut of the gastropod mollusc Littorina obtusata. The gregarine has the unusual features of transverse orientation of the epicyte folds and two anterior pouch-like hollows