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 Experiment Videos

The elasmobranch spiracular organ. I. Morphological studies.

M A Barry1, D H Hall, M V Bennett

  • 1Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461.

Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology
|May 1, 1988
PubMed
Summary

The spiracular organ in skates and sharks detects jaw movement. Hyomandibular cartilage flexion deforms the organ, potentially exciting sensory cells and aiding jaw function.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Quantitative spectral assessment of intracardiac electrogram characteristics associated with post infarct fibrosis and ventricular tachycardia.

PloS one·2018
Same author

Estimation of the burden of flu-association influenza-like illness visits on total clinic visits through the sentinel influenza monitoring system in Senegal during the 2013-2015 influenza seasons.

Epidemiology and infection·2018
Same author

Variation in quality report viewing by providers and correlation with NICU quality metrics.

Journal of perinatology : official journal of the California Perinatal Association·2017
Same author

Effects of delivery room quality improvement on premature infant outcomes.

Journal of perinatology : official journal of the California Perinatal Association·2016
Same author

Ninety Seconds Could be the Optimal Duration for Ventricular Radiofrequency Ablation - Results From a Myocardial Phantom Model.

Heart, lung & circulation·2016
Same author

In vivo evidence of mitochondrial dysfunction and altered redox homeostasis in a genetic mouse model of propionic acidemia: Implications for the pathophysiology of this disorder.

Free radical biology & medicine·2016

Area of Science:

  • Sensory biology
  • Comparative anatomy
  • Ichthyology

Background:

  • The spiracular organ, a receptor linked to the first gill cleft (spiracle), has an unknown function.
  • This study investigates the functional morphology of the spiracular organ in elasmobranchs.

Purpose of the Study:

  • To elucidate the functional morphology of the spiracular organ in the little skate (Raja erinacea) and the smooth dogfish (Mustelus canis).
  • To determine the relationship between hyomandibular cartilage movement and spiracular organ deformation.

Main Methods:

  • Light and electron microscopy were used to examine the spiracular organ's structure in both species.
  • The study analyzed the mechanical linkage between the hyomandibula and the spiracular organ.

Related Experiment Videos

Main Results:

  • The spiracular organ, containing sensory hair cells and a cupula, deforms with hyomandibular cartilage flexion, which is associated with jaw protrusion.
  • In skates, the organ is directly stretched/relaxed by hyomandibular movement; in sharks, this effect is indirect via a ligament.
  • Deflection of hair cell cilia was observed, indicating potential sensory afferent excitation during jaw movement.

Conclusions:

  • The spiracular organ functions as a mechanoreceptor, sensing jaw protrusion.
  • This sensory input likely contributes to the control of jaw movements in elasmobranchs.