Document Detail

Comparative assessment of amphibious hearing in pinnipeds.
MedLine Citation:
PMID:  23563644     Owner:  NLM     Status:  Publisher    
Auditory sensitivity in pinnipeds is influenced by the need to balance efficient sound detection in two vastly different physical environments. Previous comparisons between aerial and underwater hearing capabilities have considered media-dependent differences relative to auditory anatomy, acoustic communication, ecology, and amphibious life history. New data for several species, including recently published audiograms and previously unreported measurements obtained in quiet conditions, necessitate a re-evaluation of amphibious hearing in pinnipeds. Several findings related to underwater hearing are consistent with earlier assessments, including an expanded frequency range of best hearing in true seals that spans at least six octaves. The most notable new results indicate markedly better aerial sensitivity in two seals (Phoca vitulina and Mirounga angustirostris) and one sea lion (Zalophus californianus), likely attributable to improved ambient noise control in test enclosures. An updated comparative analysis alters conventional views and demonstrates that these amphibious pinnipeds have not necessarily sacrificed aerial hearing capabilities in favor of enhanced underwater sound reception. Despite possessing underwater hearing that is nearly as sensitive as fully aquatic cetaceans and sirenians, many seals and sea lions have retained acute aerial hearing capabilities rivaling those of terrestrial carnivores.
Colleen Reichmuth; Marla M Holt; Jason Mulsow; Jillian M Sills; Brandon L Southall
Related Documents :
8873264 - A key by which the toad's visual system gets access to the domain of prey.
24931834 - Light control of stoichiometry and motion in pseudorotaxanes comprising a cucurbit[7]ur...
16351824 - Perspectives on cardiac physiological ontogeny in crustaceans.
11259674 - The contribution of trait-mediated indirect effects to the net effects of a predator.
8234644 - Precision of hand-held dental radiometers.
10766274 - Compound grating discrimination in extrafoveal and amblyopic vision.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-4-6
Journal Detail:
Title:  Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology     Volume:  -     ISSN:  1432-1351     ISO Abbreviation:  J. Comp. Physiol. A Neuroethol. Sens. Neural. Behav. Physiol.     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-4-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101141792     Medline TA:  J Comp Physiol A Neuroethol Sens Neural Behav Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Long Marine Laboratory, Institute of Marine Sciences, University of California Santa Cruz, Santa Cruz, CA, 95060, USA,
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Oxysophocarpine induces anti-nociception and increases the expression of GABAA?1 receptors in mice.
Next Document:  Percutaneous angioplasty of internal jugular and azygous veins in patients with chronic cerebrospina...