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The effect of chronic stress on the adrenal cortex of the Atlantic bottlenose dolphin (Tursiops truncatus)

Status Complete
Seeking Researchers No
Start Date 07/01/2009
End Date 06/01/2010
Funding Source REU
Funding Amount
Community Partner
Related Course
Last Updated 04/08/2010 04:19PM
Keywords bottlenose dolphin


  David Pfeiffer

Student Researchers
  Samuel Cason


The stress response is, in large part, mediated via hormones secreted by the adrenal glands. Long term or chronic stress is known to produce morphological changes within adrenal glands, including cortical enlargement. Such changes may give rise to alterations in the hormone secretion behavior of these glands. In an effort to further elucidate how chronic stress affects the adrenal cortex, Immunohistochemical (IHC) techniques were employed to identify potential changes in specific cell populations within the cortex of chronically stressed bottlenose dolphins. Hematoxylin and Eosin (H&E) staining allowed for sufficient contrast between medullary and cortical regions. IHC labeling, including antigen retrieval techniques yielded inconclusive results.

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