Protozoan Grazing
Protozoan Grazing - Related Videos
13:54
Tractable Mammalian Cell Infections with Protozoan-primed Bacteria
0 Views •
Cited by 2 •
2013
This technique provides a method to harvest, normalize and quantify intracellular growth of bacterial pathogens that are pre-cultivated in natural protozoan host cells prior to infections of mammalian cells. This method can be modified to accommodate a wide variety of host cells for the priming stage as well as target cell types.
05:55
How to Create Conditioned Taste Aversion for Grazing Ground Covers in Woody Crops with Small Ruminants
0 Views •
Cited by 4 •
2016
Feeding behavior preferences in livestock can be modified to implement a grazing management plan in woody crops. Here, we present a protocol to show a lithium chloride dose after eating a new plant that induces conditioned taste aversion.
06:05
Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials
0 Views •
2014
Progress has been made in utilizing spin echo resolved grazing incidence scattering (SERGIS) as a neutron scattering technique to probe the length-scales in irregular samples. Crystallites of [6,6]-phenyl-C61-butyric acid methyl ester have been probed using the SERGIS technique and the results confirmed by optical and atomic force microscopy.
07:49
Using the Protozoan Paramecium caudatum as a Vehicle for Food-borne Infections in Zebrafish Larvae
0 Views •
Cited by 30 •
2019
Zebrafish (Danio rerio) are becoming a widely-used vertebrate animal model for microbial colonization and pathogenesis. This protocol describes the use of the protozoan Paramecium caudatum as a vehicle for food-borne infection in zebrafish larvae. P. caudatum readily internalizes bacteria and get taken up by larval zebrafish through natural preying behavior.
06:49
In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
0 Views •
Cited by 2 •
2021
This paper is a demonstration and a guideline to perform and analyze in-house (with a laboratory X-ray instrument) in situ GISAXS experiments of drying inks on roll-to-roll slot-die coated, non-fullerene organic photovoltaics.
FAQs
These features help protozoa encounter, position, and engulf particulate prey. Cell-surface structures contribute to particle capture, while fluid currents can bring bacteria, algae, or other microorganisms toward the cell. The captured material is then enclosed through phagocytosis, a process that allows ingestion of prey and connects microscopic feeding behavior with changes in microbial population size.
Prey selection depends on interacting biological and environmental variables rather than on abundance alone. Cell size affects which particles can be captured, while motility influences encounters between predator and prey. The abundance of available microorganisms and surrounding environmental conditions also alter feeding opportunities, helping explain why grazing pressure differs among microbial communities.
Grazing intensity changes when prey abundance, cell size, motility, or environmental conditions change. More available prey may increase feeding opportunities, whereas differences in size or movement can affect capture. These relationships matter because variation in grazing pressure can regulate microbial populations and alter the structure of the surrounding microbial community.
Digestion and excretion release soluble nutrients while transferring energy through microbial food webs. This recycling links consumed microorganisms with the broader availability of nutrients in the system. As a result, grazing can affect ecosystem productivity and nutrient cycling in soil, freshwater, marine, and wastewater environments, not merely reduce the abundance of individual prey populations.
Comparing these environments reveals how the same feeding interaction contributes to different microbial food webs. Measurements of prey abundance, cell characteristics, and environmental conditions can help relate grazing intensity to microbial population regulation, ecosystem productivity, and nutrient availability. This broader comparison also supports interpretation of how microbial communities respond to environmental change.
Changes in environmental conditions can modify prey availability, movement, and capture opportunities, thereby shifting grazing intensity. Those shifts may influence microbial community structure, energy flow, and nutrient cycling. Studying the interaction therefore provides a biological context for interpreting ecosystem responses, including changes in productivity and nutrient availability across terrestrial, aquatic, and wastewater systems.