Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Gene Regulation in Microbial Communities: Quorum Sensing

Gene Regulation in Microbial Communities: Quorum Sensing

Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...

Automated Microbial Diagnostics

Automated Microbial Diagnostics

Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...

Oxygen Requirements and Growth Patterns

Oxygen Requirements and Growth Patterns

Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...

Microbial Biosensors

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

Methods to Assess Microbial Communities

Methods to Assess Microbial Communities

Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...

Microbial Growth Measurement: Indirect Methods

Microbial Growth Measurement: Indirect Methods

Estimating microbial growth is essential for understanding population dynamics and environmental adaptations. Indirect methods provide valuable insights by measuring parameters such as turbidity, metabolic activity, and biomass, enabling efficient and reproducible assessments.During exponential growth, microbial cells scatter light proportionally to their biomass, a principle used in turbidity measurements. About one million cells per milliliter produce detectable scattering, which a...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Soil ciliates' response to glyphosate exposure: A microcosm experiment.

Protist·2025

Same author

First record of Colpodidium caudatum (Ciliophora, Colpodidiidae) in Europe.

Protist·2023

Same author

Introduction to the Special Issue: Bland J. Finlay: Uncovering the Unseen World of Microbes.

Protist·2022

Same author

Seasonal Patterns of Phytoplankton Taxon Richness in Lakes: Effects of Temperature, Turnover and Abundance.

Protist·2022

Same author

The Extraordinarily Rare Ciliate Legendrea loyezae Fauré-Fremiet, 1908 (Haptoria, Ciliophora).

Protist·2022

Same author

Effects of Copper and the Insecticide Cypermethrin on a Soil Ciliate (Protozoa: Ciliophora) Community.

Protist·2022

Search research articles

Related Experiment Video

Updated: Jun 30, 2026

Creating Rapid Oxygen Oscillations in Microbial Single-cell Growth Analysis using a Microfluidic Double-layer Device

Creating Rapid Oxygen Oscillations in Microbial Single-cell Growth Analysis using a Microfluidic Double-layer Device

Published on: July 18, 2025

Oxygen sensing drives predictable migrations in a microbial community.

Bland J Finlay¹, Genoveva F Esteban

¹Queen Mary University of London, School of Biological and Chemical Sciences, The River Laboratory, Wareham BH20 6BB, UK. b.j.finlay@qmul.ac.uk

Environmental Microbiology

|September 23, 2008

Summary

Aerobic ciliated protozoa migrate from lake sediment to water columns when warming and low oxygen occur. These microbial migrations suggest preferred oxygen tension may unify ciliate communities.

More Related Videos

Visualization and Analysis of mRNA Molecules Using Fluorescence In Situ Hybridization in Saccharomyces cerevisiae

Visualization and Analysis of mRNA Molecules Using Fluorescence In Situ Hybridization in Saccharomyces cerevisiae

Published on: June 14, 2013

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level

Published on: November 17, 2013

Related Experiment Videos

Last Updated: Jun 30, 2026

Creating Rapid Oxygen Oscillations in Microbial Single-cell Growth Analysis using a Microfluidic Double-layer Device

Creating Rapid Oxygen Oscillations in Microbial Single-cell Growth Analysis using a Microfluidic Double-layer Device

Published on: July 18, 2025

Visualization and Analysis of mRNA Molecules Using Fluorescence In Situ Hybridization in Saccharomyces cerevisiae

Visualization and Analysis of mRNA Molecules Using Fluorescence In Situ Hybridization in Saccharomyces cerevisiae

Published on: June 14, 2013

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level

Published on: November 17, 2013

Area of Science:

Microbial Ecology
Limnology
Environmental Science

Background:

Aerobic organisms utilize oxygen sensing for survival.
Ciliated protozoa are key components of aquatic ecosystems.
Understanding microbial migration dynamics is crucial for aquatic ecology.

Purpose of the Study:

To investigate the population migration of aerobic ciliated protozoa in a lake ecosystem.
To identify environmental factors driving microbial movements between sediment and water columns.
To explore potential oxygen-sensing mechanisms and community cohesion in ciliate populations.

Main Methods:

Tracking population migrations of 10 ciliate species over two years in Esthwaite Water.
Monitoring lake sediment and water column dynamics, including temperature and oxygen tension.
Observing ciliate emergence from sediment and migration into the water column.

Main Results:

Lake sediment and water column dynamics were predictable over two years.
Increasing sediment warming and low oxygen tension triggered ciliate migration from sediment to water.
Annual thermal stratification collapse repeated the migration cycle.
Specific ciliate species exhibited 'links' mediated by ambient oxygen tension.

Conclusions:

Ambient oxygen tension is a primary driver for ciliate migration from lake sediment.
Preferred oxygen tension may act as a cohesive force within ciliate communities.
The study clarifies microbial migration patterns in response to environmental cues.