We report the first comprehensive analysis of transposable element content in the compact genomes (approximately 20 Mb) of four species of Entamoeba unicellular protozoans for which draft sequences are now available. Entamoeba histolytica and Entamoeba dispar, two human parasites, have many retrotransposons, but few DNA transposons. In contrast, the reptile parasite Entamoeba invadens and the f...

twenty four ecto- and endo- parasite species were found in different organs of eight na-tive and exotic fish species in zarivar lake situated in the far west of iran. overall, 1000 fish specimens belonging to the dactylogyridae, gyrodactylidae families the cyprinidae, poeciliidae and mastacembelidae families were examined during 2001 and 2002. of them, five protozoans, including trichodina pedi...

1. The respiration of Amoeba proteus was measured. 10 c. mm. of cells were found to use about 1.6 mm.(3) of oxygen per hour at 20 degrees C. The respiratory quotient was found to be nearly unity. 2. No anaerobic metabolism was found for Amoeba. 3. The respiration of Blepharisma was found to be from 3 to 7 mm.(3) oxygen per hour for 10 mm.(3) cells. The respiratory quotient was about 1. 4. Bleph...

We found a deep maximum In the abundance of larger protozoans (>35 wm) in the Gulf of Maine at depths from 55 to 100 m, which was well below the euphotic zone, pycnocline, and the depths of peak biomass and production of both phytoplankton and bac te r~a . Our calculations of the energetics of these protozoan populations suggest that they are unable to obtain sufficient nutrition from local mic...

The biology, veterinary importance and control of certain Nematocera are described and discussed. Culicoides spp. (family Ceratopogonidae) transmit the arboviruses of bluetongue (BT), African horse sickness (AHS), bovine ephemeral fever (BEF) and Akabane. Some other arboviruses have been isolated from these species, while fowl pox has been transmitted experimentally by Culicoides. These insects...

In the past few years, it has already been proved that microbial origin of cancer exists and these oncogenic microbes are infectious in nature. After bacteria viruses, protozoans have also found to cause humans animals. They eukaryotic, unicellular, anthropozoonotic microorganisms causing several life-threatening diseases humans. While aplethora goodpieces information was gathered while documen...