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Related Concept Videos

Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
Optimal Foraging00:48

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Hybrid Zones02:29

Hybrid Zones

Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
Planar Rigid-Body Motion01:22

Planar Rigid-Body Motion

Understanding the movement of a rigid body in planar motion involves recognizing that every particle within this body is traversing a path that maintains a consistent distance from a specific plane. This concept is fundamental in the study of physics and mechanical engineering, and it allows us to comprehend better how objects move in space.
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
Sampling Plans01:23

Sampling Plans

Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
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Related Experiment Video

Updated: May 15, 2026

Preparation, Imaging, and Quantification of Bacterial Surface Motility Assays
07:35

Preparation, Imaging, and Quantification of Bacterial Surface Motility Assays

Published on: April 7, 2015

Swarming: flexible roaming plans.

Jonathan D Partridge1, Rasika M Harshey

  • 1Section of Molecular Genetics and Microbiology and Institute of Cellular and Molecular Biology, University of Texas at Austin, Austin, Texas, USA.

Journal of Bacteriology
|December 25, 2012
PubMed
Summary
This summary is machine-generated.

Bacterial swarming motility involves complex adaptations to surface movement, with diverse strategies employed by different bacteria. Understanding these varied mechanisms enhances our knowledge of surface colonization and bacterial behavior.

Related Experiment Videos

Last Updated: May 15, 2026

Preparation, Imaging, and Quantification of Bacterial Surface Motility Assays
07:35

Preparation, Imaging, and Quantification of Bacterial Surface Motility Assays

Published on: April 7, 2015

Area of Science:

  • Microbiology
  • Bacterial Motility
  • Surface Colonization

Background:

  • Bacterial swarming motility presents unique challenges compared to swimming, requiring adaptations for water attraction, friction, and surface tension.
  • Bacteria exhibit distinct swarming strategies based on agar surface hardness, with robust swarmers showing hyperflagellation and hyperelongation, unlike temperate swarmers.

Purpose of the Study:

  • To explore the diverse mechanisms and adaptations bacteria employ for swarming motility on agar surfaces.
  • To understand the factors influencing bacterial surface colonization and pathogenic potential.

Main Methods:

  • Comparative analysis of bacterial morphology and behavior on different agar surfaces.
  • Investigation of genetic and environmental factors regulating swarming, including flagellar function, gene regulation, and nutrient availability.

Main Results:

  • Swarming bacteria utilize varied strategies, including specific flagellar regulation, polysaccharide secretion, cell density-dependent gene expression, and chemotaxis.
  • Robust swarmers have distinct mechanisms, potentially involving flagellar rotation signals, which differ from temperate swarmers.

Conclusions:

  • Bacterial swarming strategies are highly diverse, reflecting adaptations for surface niche colonization and pathogenic potential.
  • The study of swarming behavior offers insights into emergent properties similar to flocking and provides models for surface colonization mechanisms.