Characterization and profiling of hepatic cytochromes P450 and phase II xenobiotic-metabolizing enzymes in beluga whales (Delphinapterus leucas) from the St. Lawrence River Estuary and the Canadian Arctic

2004 ◽  
Vol 69 (1) ◽  
pp. 35-49 ◽  
Author(s):  
Melissa A McKinney ◽  
Augustine Arukwe ◽  
Sylvain De Guise ◽  
Daniel Martineau ◽  
Pierre Béland ◽  
...  
Keyword(s):  
Phase Ii ◽  
Cytochromes P450 ◽  
River Estuary ◽  
Canadian Arctic ◽  
Delphinapterus Leucas ◽  
Metabolizing Enzymes ◽  
Xenobiotic Metabolizing Enzymes ◽  
Beluga Whales ◽  
St Lawrence River

scholarly journals The summer soundscape of a shallow-water estuary used by beluga whales in the western Canadian Arctic

2020 ◽  
Vol 6 (4) ◽  
pp. 361-383 ◽  
Author(s):  
William D. Halliday ◽  
Kevin Scharffenberg ◽  
Dustin Whalen ◽  
Shannon A. MacPhee ◽  
Lisa L. Loseto ◽  
...  
Keyword(s):  
Marine Protected Area ◽  
River Estuary ◽  
Canadian Arctic ◽  
Time Of Day ◽  
The Arctic ◽  
Delphinapterus Leucas ◽  
Marine Animals ◽  
Frequency Bands ◽  
Beluga Whales ◽  
Important Habitat

The soundscape is an important habitat component for marine animals. In the Arctic, marine conditions are changing rapidly due to sea ice loss and increased anthropogenic activities such as shipping, which will influence the soundscape. Here, we assess the contributors to the summer soundscape in the shallow waters of the Mackenzie River estuary within the Tarium Niryutait Marine Protected Area in the western Canadian Arctic, a core summering habitat for beluga whales (Delphinapterus leucas Pallas, 1776). We collected passive acoustic data during the summer over four years, and assessed the influence of physical variables, beluga whale vocalizations, and boat noise on sound pressure levels in three frequency bands (low: 0.2–1 kHz; medium: 1–10 kHz; high: 10–48 kHz) to quantify the soundscape. Wind speed, wave height, beluga vocalizations, and boat noise were all large contributors to the soundscape in various frequency bands. The soundscape varied to a lesser degree between sites, time of day, and with tide height, but remained relatively constant between years. This study is the first detailed description of a shallow summer soundscape in the western Canadian Arctic, an important habitat for beluga whales, and can be used as a baseline to monitor future changes during this season.

PCBs and organochlorine pesticides in blubber biopsies from free-ranging St. Lawrence River Estuary beluga whales (Delphinapterus leucas), 1994–1998

2003 ◽  
Vol 122 (2) ◽  
pp. 291-302 ◽  
Author(s):  
Karen E Hobbs ◽  
Derek C.G Muir ◽  
Robert Michaud ◽  
Pierre Béland ◽  
Robert J Letcher ◽  
...  
Keyword(s):  
Organochlorine Pesticides ◽  
River Estuary ◽  
Delphinapterus Leucas ◽  
Beluga Whales ◽  
Free Ranging ◽  
St Lawrence River

Vitamin A and E profiles as biomarkers of PCB exposure in beluga whales (Delphinapterus leucas) from the western Canadian Arctic

2013 ◽  
Vol 142-143 ◽  
pp. 317-328 ◽  
Author(s):  
Jean-Pierre W. Desforges ◽  
Peter S. Ross ◽  
Neil Dangerfield ◽  
Vince P. Palace ◽  
Michael Whiticar ◽  
...  
Keyword(s):  
Vitamin A ◽  
Canadian Arctic ◽  
Delphinapterus Leucas ◽  
Beluga Whales ◽  
Pcb Exposure

Spring conditions and habitat use of beluga whales (Delphinapterus leucas) during arrival to the Mackenzie River Estuary

Polar Biology ◽  
2016 ◽  
Vol 39 (12) ◽  
pp. 2319-2334 ◽  
Author(s):  
Claire A. Hornby ◽  
Carie Hoover ◽  
John Iacozza ◽  
David G. Barber ◽  
Lisa L. Loseto
Keyword(s):  
Habitat Use ◽  
River Estuary ◽  
Delphinapterus Leucas ◽  
Beluga Whales ◽  
Mackenzie River
Sign in / Sign up

Export Citation Format

Share Document