Recently, several investigators have reported large-bowel diarrhea in cats associated with intestinal trichomonad parasites. These reports have presumptively identified the flagellates as Pentatrichomonas hominis, a n organism putatively capable of infecting the intestinal tracts of a number of mammalian hosts, including cats, dogs, and man. The purpose of the present study was to determine the...

Trypanosoma cruzi-like flagellates were incidentally noted in blood smears of a routinely monitored rhesus monkey experimentally infected with the simian immunodeficiency virus (SIV). Immunodeficiency in the course of the SIV infection reactivated a chronic infection of Chagas' disease that had been unnoticed when the macaque was imported to Europe. The animal developed no specific clinical sym...

Early Cretaceous flagellates with characters typical of trypanosomatids were found in the gut of sand fly larvae, as well as in surrounding debris, in Burmese amber. This discovery supports a hypothesis in which free-living trypanosomatids could have been acquired by sand fly larvae in their feeding environment and then carried transtadially into the adult stage. At some point in time, specific...

Megaselia scalaris (Diptera: Phoridae) is one of the medically important insects. Maggots from a urine sample of a 5-year-old Saudi girl were examined microscopically for identification. These maggots were cultured to become adult flies. Larvae and adults were identified using standard keys. Protozoan flagellates were obtained from the gut of the larvae. This is the first report of M. scalaris ...

Of ten recognized trypanosomatid genera, only two - pathogenic Trypanosoma and Leishmania - have been actively investigated for any length of time while the plant flagellates - Phytomonas - have recently begun to attract attention due to their role as agricultural parasites. The remaining genera that comprise parasites associated with insects have been largely neglected except for two or three ...

Amebae of Naegleria gruberi transform into flagellates whose basal bodies have the typical centriole-like structure. The amebae appear to lack any homologous structure, even during mitosis. Basal bodies are constructed during transformation and, in cells transforming synchronously at 25 degrees C, they are first seen about 10 min before flagella are seen. No structural precursor for these basal...

The developmental stages of Trypanosoma cruzi ssp., found in the intestinal tract of Cavernicola pilosa, are described and measurements given for nine life stages. The frequencies of the various stages in foregut, midgut and hindgut of the triatomines are provided; parasites were rare in the foregut and metatrypomastigotes were seen only in the mid- and hindguts. All adult bugs examined harbour...

Flagellar rootlets, rhizoplasts, and parabasal filaments are periodically banded structures which extend into the cytoplasm from the basal bodies and kinetosomes of flagella and cilia (Pitelka, 1969). In all but a few cases the banding pattern has been assumed to be constant for the rhizoplast of a particular organism. This note reports an electron microscope study of the banding pattern of the...