Changes in persistent contaminant concentration and CYP1A1 protein expression in biopsy samples from northern bottlenose whales, Hyperoodon ampullatus, following the onset of nearby oil and gas development
Hooker, Sascha K.
Metcalfe, Tracy L.
Metcalfe, Chris D.
Angell, Carolyn M.
Wilson, Joanna Y.
Moore, Michael J.
MetadataShow full item record
A small population of endangered northern bottlenose whales (Hyperoodon ampullatus) inhabits “The Gully” Marine Protected Area on the Scotian Shelf, eastern Canada. Amid concerns regarding nearby oil and gas development, we took 36 skin and blubber biopsy samples in 1996-97 (prior to major development) and 2002-03 (five years after development began), and 3 samples from a population in the Davis Strait, Labrador in 2003. These were analysed for cytochrome P4501A1 (CYP1A1) protein expression (n=36), and for persistent contaminants (n=23). CYP1A1 showed generally low expression in whales from The Gully, but higher levels during 2003, potentially co-incident with recorded oil spills, and higher levels in Davis Strait whales. A range of PCB congeners and organochlorine compounds were detected, with concentrations similar to other North Atlantic odontocetes. Concentrations were higher in whales from The Gully than from the Davis Strait, with significant increases in 4,4’-DDE and trans-nonachlor in 2002-03 relative to 1996-97.
Author Posting. © Elsevier B.V., 2007. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Environmental Pollution 152 (2008): 205-216, doi:10.1016/j.envpol.2007.05.027.
Showing items related by title, author, creator and subject.
Relating behavioral context to acoustic parameters of bottlenose dolphin (Tursiops truncatus) vocalizations Thomas, Rebecca Elizabeth (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-08)This thesis presents methods to analyze the function of vocalizations of the bottlenose dolphin, Tursiops truncatus. The thesis uses the social interaction as the basic unit of analysis, and maintains a deliberate focus ...
van der Hoop, Julie; Fahlman, Andreas; Hurst, Thomas P.; Rocho-Levine, Julie; Shorter, K. Alex; Petrov, Victor; Moore, Michael J. (2014-10)Attaching bio-telemetry or -logging devices (‘tags’) to marine animals for research and monitoring adds drag to streamlined bodies, thus affecting posture, swimming gaits and energy balance. These costs have never been ...
Esch, H. Carter; Sayigh, Laela S.; Wells, Randall S. (2009-01-06)Bottlenose dolphins (Tursiops truncatus) produce individually distinctive vocalizations called signature whistles, first described by Melba and David Caldwell (1965). The Caldwells observed that isolated, captive dolphins ...