Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Diversity of Protists III01:27

Diversity of Protists III

606
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
606
Planar Rigid-Body Motion01:22

Planar Rigid-Body Motion

842
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...
842
Simple Harmonic Motion and Uniform Circular Motion01:42

Simple Harmonic Motion and Uniform Circular Motion

5.2K
While simple harmonic motion and uniform circular motion may be two separate concepts, they correlate and interlink with each other. Simple harmonic motion is an oscillatory motion in a system where the net force can be described by Hooke's law, while uniform circular motion is the motion of an object in a circular path at constant speed.
There is an easy way to produce simple harmonic motion by using uniform circular motion. For instance, consider a ball attached to a uniformly rotating...
5.2K
Anatomical Movements00:51

Anatomical Movements

14.3K
Anatomical movements refer to the various actions or motions that can be performed by the body's joints and muscles. These movements are described using specific terms to provide a standardized way of discussing and understanding the range of motion at different joints.
Here are some common anatomical movements:
Flexion and extension motions are in the sagittal (anterior–posterior) plane of motion. These movements take place at the shoulder, hip, elbow, knee, wrist,...
14.3K
Fascicle Arrangement in Skeletal Muscles01:25

Fascicle Arrangement in Skeletal Muscles

3.5K
Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes.
The four primary types of muscle based on fascicle arrangement are:
3.5K
Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

954
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
954

You might also read

Related Articles

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

Sort by
Same author

Adhesion and Friction in Biological and Bioinspired Systems.

Biomimetics (Basel, Switzerland)·2026
Same author

Advances in Biomimetics: Patents from Nature.

Biomimetics (Basel, Switzerland)·2026
Same author

Attachment ability and mating behaviour of the black soldier fly Hermetia illucens (Diptera: Stratiomyidae).

Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology·2026
Same author

Shell damage and mandible mechanics in the ant Messor wasmanni.

Biointerphases·2026
Same author

Tooth Shape Controls Stiffness and Food Collection Efficiency in Biomimetic Radular Teeth.

Biomimetics (Basel, Switzerland)·2026
Same author

A striking difference: biomechanics of the impaling hunting strategy of a moss mantis.

Frontiers in zoology·2026

Related Experiment Video

Updated: Dec 9, 2025

A Minimally Invasive Lesion Technique for Muscles Intrinsic to the Odontophore of Aplysia californica
05:38

A Minimally Invasive Lesion Technique for Muscles Intrinsic to the Odontophore of Aplysia californica

Published on: August 16, 2019

6.3K

Not just scratching the surface: distinct radular motion patterns in Mollusca.

Carolin Scheel1, Stanislav N Gorb2, Matthias Glaubrecht1

  • 1Animal Diversity, Center of Natural History (CeNak), Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany.

Biology Open
|September 12, 2020
PubMed
Summary

The mollusc radula, a feeding organ with teeth, exhibits six distinct movement types. These movements, involving rotation and bending, enable efficient food processing across diverse gastropod species and chitons.

Keywords:
FeedingFunctionMolluscaRadulaRadular teeth

More Related Videos

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis
07:33

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis

Published on: March 15, 2016

9.2K
Muscle Receptor Organs in the Crayfish Abdomen: A Student Laboratory Exercise in Proprioception
10:50

Muscle Receptor Organs in the Crayfish Abdomen: A Student Laboratory Exercise in Proprioception

Published on: November 18, 2010

22.8K

Related Experiment Videos

Last Updated: Dec 9, 2025

A Minimally Invasive Lesion Technique for Muscles Intrinsic to the Odontophore of Aplysia californica
05:38

A Minimally Invasive Lesion Technique for Muscles Intrinsic to the Odontophore of Aplysia californica

Published on: August 16, 2019

6.3K
A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis
07:33

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis

Published on: March 15, 2016

9.2K
Muscle Receptor Organs in the Crayfish Abdomen: A Student Laboratory Exercise in Proprioception
10:50

Muscle Receptor Organs in the Crayfish Abdomen: A Student Laboratory Exercise in Proprioception

Published on: November 18, 2010

22.8K

Area of Science:

  • * Zoology
  • * Marine Biology
  • * Biomechanics

Background:

  • * The radula is a chitinous membrane with teeth, crucial for mechanical food processing in molluscs.
  • * While radular morphology is well-studied, its functional principles and movement dynamics during feeding remain underexplored.
  • * Understanding radular function is key to comprehending feeding strategies in Mollusca.

Purpose of the Study:

  • * To investigate and classify the diverse radular movements during feeding actions in molluscs.
  • * To identify the functional tooth rows and their precise positions during the feeding process.
  • * To compare radular motion across major gastropod lineages and Polyplacophora.

Main Methods:

  • * Video recording of radular motion in 20 representative mollusc species from four gastropod lineages and Polyplacophora.
  • * Classification of observed radular movements.
  • * Correlation of video footage with scanning electron microscope (SEM) images of radulae.

Main Results:

  • * Six distinct types of radular movements were identified, including rotations and bending of the radula.
  • * Functional tooth rows and their correct positions during feeding were recognized.
  • * Specific structures were identified as counter bearings facilitating food grasping and tearing.

Conclusions:

  • * Radular function is more complex than previously assumed, involving diverse movements and specialized structures.
  • * The identified movement types provide insights into the biomechanical principles of mollusc feeding.
  • * This study lays the groundwork for future research into the evolution and functional diversity of the mollusc radula.