The article deals with the problem of studying structures and evolutions ecological chains at level microorganisms using mathematical computer models. Several models have been constructed based on laws biological kinetics. Computer experiments were developed these Mathematical describing dependence concentration bacterial biomass, substrates protozoa time created. With help Mathcad package, gra...

The generalist feeding strategy of larvae of the western tree hole mosquito, Aedes sierrensis, is central to understanding the community-level effects of the tritrophic interactions among mosquito larvae, midsized organisms (such as protozoa), and lowerlevel organisms (such as bacteria and fungi) in west coast phytotelmata. Laboratory microcosm experiments were conducted to characterize the fee...

The aim of this study was to determine if rumen protozoa could form large amounts of reserve carbohydrate compared to the amounts formed by bacteria when competing for glucose in batch cultures. We separated large protozoa and small bacteria from rumen fluid by filtration and centrifugation, recombined equal protein masses of each group into one mixture, and subsequently harvested (reseparated)...

S TUDIES by Appleby et al. (1956), Gutierrez and tlungate (1957), Eadie et al. (1959) and Eadie and Hollson (1962) indicated that ciliate protozoa normally inhabiting the rumen exerted considerable influence upon end products of rumen fermentation and upon tureen bacterial populations. The full significance of protozoa to the nutrition of cattle and sheep is not clear. However, Christiansen et ...

introduction: intestinal parasites have world wide prevalence and are considered to be as one of the leading hygienic and economic problems in the world. it can be said that there is nowhere in the world without parasitic infestations. the present study was conducted to determine the prevalence of intestinal parasites in patients referring to yazd central laboratory in 2000-2002. methods: the p...