JWD Subscribe to eTOC alerts
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Wildlife Diseases, 33(3), 1997, pp. 430-437
© Wildlife Disease Association  1997
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lair, S
Right arrow Articles by Martineau, D
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lair, S
Right arrow Articles by Martineau, D

Adrenal hyperplastic and degenerative changes in beluga whales

S Lair, P Beland, S De Guise, and D Martineau


ABSTRACT

Thirty stranded beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary (Quebec, Canada) population and five animals from the Hudson Bay aboriginal hunt (North-west Territories, Canada) were examined. Twenty one animals from the St. Lawrence Estuary had mild to severe adrenal lesions and four whales from the Hudson Bay population were affected by minimal adrenal changes. Cortical hyperplasia was observed in 24 adult beluga whales all from the St. Lawrence Estuary. Bilateral cortical cysts and cellular vacuolar degeneration were observed in the adrenal glands of 19 beluga whales from both populations. The cysts, filled with a cortisol-rich liquid, were present in both sexes. Beluga whales with adrenal cysts were significantly older than animals without cysts, and the severity of the lesions increased with age. Nodular hyperplasia of the medulla was observed in seven of the beluga whales, all from the St. Lawrence Estuary population. All lesions could be part of a normal aging process. The adrenocortical lesions might be due to stress or adrenocorticolytic xenobiotics, while the medullary hyperplasia might be caused by hypoxia or exposure to estrogenic xenobiotics.


This article has been cited by other articles:


Home page
 Vet PatholHome page
S. J. Newman and S. A. Smith
Marine mammal neoplasia: a review.
Vet. Pathol., November 1, 2006; 43(6): 865 - 880.
[Abstract] [Full Text] [PDF]

Home page
 Vet PatholHome page
G. Di Guardo and G. Marruchella

Vet. Pathol., July 1, 2005; 42(4): 517 - 517.
[Full Text] [PDF]

Home page
 Vet PatholHome page
I. Mikaelian, P. Labelle, M. Kopal, S. De Guise, and D. Martineau
Adenomatous Hyperplasia of the Thyroid Gland in Beluga Whales (Delphinapterus leucas) from the St. Lawrence Estuary and Hudson Bay, Quebec, Canada
Vet. Pathol., November 1, 2003; 40(6): 698 - 703.
[Abstract] [Full Text] [PDF]

Home page
 Toxicol PatholHome page
K. Ozaki, J. K. Haseman, J. R. Hailey, R. R. Maronpot, and A. Nyska
Association of Adrenal Pheochromocytoma and Lung Pathology in Inhalation Studies with Particulate Compounds in the Male F344 Rat--The National Toxicology Program Experience
Toxicol Pathol, February 1, 2002; 30(2): 263 - 270.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the Wildlife Disease Association.