The spiral ganglion and Rosenthal's canal in beluga whales.

Journal of Morphology
Jennifer D SensorJ G M Thewissen

Abstract

With the increase of human activity and corresponding increase in anthropogenic sounds in marine waters of the Arctic, it is necessary to understand its effect on the hearing of marine wildlife. We have conducted a baseline study on the spiral ganglion and Rosenthal's canal of the cochlea in beluga whales (Delphinapterus leucas) as an initial assessment of auditory anatomy and health. We present morphometric data on the length of the cochlea, number of whorls, neuron densities along its length, Rosenthal's canal length, and cross-sectional area, and show some histological results. In belugas, Rosenthal's canal is not a cylinder of equal cross-sectional area, but its cross-section is greatest near the apex of the basal whorl. We found systematic variation in the numbers of neurons along the length of the spiral ganglion, indicating that neurons are not dispersed evenly in Rosenthal's canal. These results provide data on functionally important structural parameters of the beluga ear. We observed no signs of acoustic trauma in our sample of beluga whales.

References

Dec 1, 1979·The Journal of Comparative Neurology·E M Keithley, M L Feldman
Feb 15, 1977·Archives of Oto-rhino-laryngology·W MerckI Cürten
May 1, 1989·The Annals of Otology, Rhinology & Laryngology. Supplement·M RobertoG A Turrentine
Jun 1, 1967·Archives of Otolaryngology·L G Johnsson, J E Hawkins
Feb 1, 1972·Acta Oto-laryngologica·H Spoendlin
Nov 1, 1971·Proceedings of the National Academy of Sciences of the United States of America·E G WeverS H Ridgway
Dec 1, 1971·Proceedings of the National Academy of Sciences of the United States of America·E G WeverS H Ridgway
Oct 17, 2002·Journal of the Association for Research in Otolaryngology : JARO·Yong WangM Charles Liberman
Jul 16, 2005·The Journal of the Acoustical Society of America·James J FinneranSam H Ridgway
Oct 1, 1971·Proceedings of the National Academy of Sciences of the United States of America·E G WeverS H Ridgway
Mar 1, 1972·Proceedings of the National Academy of Sciences of the United States of America·E G WeverS H Ridgway
Jun 17, 2006·Hearing Research·Karen A AbrashkinYehoash Raphael
Sep 18, 2007·The European Journal of Neuroscience·Patricia A HurleyRobert K Shepherd
Feb 19, 2011·Hearing Research·C-P RichterD S Whitlon
Mar 23, 2011·Hearing Research·Shane B JohnsonPeter A Santi
May 20, 2011·Nature·Michael Stocker
May 16, 2014·The Journal of Experimental Biology·Manuel CastelloteEric Gaglione

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Advances in Experimental Medicine and Biology
Marc O LammersWhitlow W L Au
Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
S De GuiseP Béland
© 2022 Meta ULC. All rights reserved