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JDS dissertation final submission.pdf (5.37 MB)
ETD Abstract Container
Abstract Header
HEARING AND AGE ESTIMATION IN TWO SPECIES OF ARCTIC WHALE
Author Info
Sensor, Jennifer Dawn
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=kent1512125887991219
Abstract Details
Year and Degree
2017, PHD, Kent State University, College of Arts and Sciences / School of Biomedical Sciences.
Abstract
This dissertation provides baseline information about the inner ear of beluga and bowhead whales, focusing on cell number and density of the spiral ganglion and the cross-sectional area of Rosenthal's canal along the length of the cochlea. Cochlear morphometric information is provided. The spiral ganglion is investigated for signs of trauma, as neural degeneration in the spiral ganglion is not immediate upon sound exposure (as it is in other cochlear regions) allowing documentation of long term damage to the inner ear. I also present a new method of age estimation for bowhead whales through counting GLGs within the periosteal region of the involucrum of the tympanic bulla. I characterize the different parts of the involucrum isotopically and histologically. The results are compared to life history parameters and to estimation methods that use baleen isotopes and baleen length.
Committee
J.G.M. Thewissen, PhD (Advisor)
Pages
144 p.
Subject Headings
Aging
;
Biological Oceanography
;
Biology
;
Cellular Biology
;
Histology
;
Neurobiology
;
Wildlife Management
Keywords
Cetacea
;
Odontoceti
;
Mysticeti
;
Delphinapterus leucas
;
hearing
;
cochlea
;
inner ear
;
spiral ganglion
;
Balaena
;
Tympanic bulla
;
GLGs
;
LAGs
;
Arctic
;
stable isotopes
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Citations
Sensor, J. D. (2017).
HEARING AND AGE ESTIMATION IN TWO SPECIES OF ARCTIC WHALE
[Doctoral dissertation, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1512125887991219
APA Style (7th edition)
Sensor, Jennifer.
HEARING AND AGE ESTIMATION IN TWO SPECIES OF ARCTIC WHALE.
2017. Kent State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=kent1512125887991219.
MLA Style (8th edition)
Sensor, Jennifer. "HEARING AND AGE ESTIMATION IN TWO SPECIES OF ARCTIC WHALE." Doctoral dissertation, Kent State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1512125887991219
Chicago Manual of Style (17th edition)
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Document number:
kent1512125887991219
Download Count:
644
Copyright Info
© 2017, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.