Heterotrophic (phagotrophic) flagellates are key components of planktonic food webs in freshwater and marine ecosystems because they are the main consumers of bacteria. Although they are ubiquitous in aquatic ecosystems, they were numerically undetectable in turbid glacier-fed lakes. Here we show that glacial particles had negative effects on the survival and growth of heterotrophic flagellates...

Heterotrophic nanoplankton flagellates and bacteria were quantified at regular intervals during a month in Limfjorden, Denmark. The number of flagellates averaged about 103 ml-l and ranged from < 2 X 102 to about 3 X 103 ml-l. The composition of this fauna was dominated by choanoflagellates, non-plgmented chrysomonads and bicoecids; other forms are rarer. A substantial part of this fauna is ass...

Transport behaviors of unidentified flagellated protozoa (flagellates) and flagellate-sized carboxylated microspheres in sandy, organically contaminated aquifer sediments were investigated in a small-scale (1 to 4-m travel distance) natural-gradient tracer test on Cape Cod and in flow-through columns packed with sieved (0.5-to 1.0-mm grain size) aquifer sediments. The minute (average in situ ce...

Lutzomyia longipalpis females received single and mixed infections with Endotrypanum and Leishmania. Two biological parameters were analyzed: the percentage of infected females and the distribution of flagellates in the gut of the females. The principal comparisons were performed between (1) two strains of Endotrypanum, (2) cloned versus primary sample of one strain of Endotrypanum, (3) Endotry...

Kinetoplastid flagellates, microscopically often detected from various aquatic environments and considered ubiquitous are seldom reported in molecular diversity studies with universal eukaryote DNA primers. To investigate this inconsistency, we examined nanoflagellate diversity in Lake Biwa, Japan by 18S rRNA gene clone libraries using universal eukaryote and kinetoplastid-specific primers. We ...

1. Cases of flagellate infection of man by Chilomastix mesnili have been reported from nearly every locality in the world. They are fairly abundant in the United States and are often confused with cases of infection by Trichomonas intestinalis. 2. The shape of Chilomastix is pyriform. The body contains the following structures: nucleus, centrosome, primary, secondary, and tertiary blepharoplast...

The population of flagellates in termites is one that interests the physiologist because of the mutualistic relationship essential to nutrition of the host, studied by Cleveland and by Hungate; that interests the student of comparative morphology of protozoa because of the striking characteristics of many of the flagellates; and that interests the student of evolution because circumstances in t...

Opinions are divided regarding the pathological manifestations of the flagellates. Alvarez, Silverton and Bernardino are of opinion that the fact that the infection as well as the symptom disappeared after treatment with atebrin proved beyond doubt the pathogenicity of the flagellates. Chopra et al. (1939) from a routine study of the stools of the patients, the symptoms and the response to trea...