Acoustic telemetry allows remote measurement and reporting of information on sharks. Emitter tags are attached to individual sharks and they send an electronic signal at regular intervals. Underwater receivers placed at strategic locations record the data which consists of depth, temperature and swimming speed. The receivers are deployed and recovered by a dive team when needed. The data is used to make statistical graphs which allows us to better understand the effects of environmental conditions on the movements of the Greenland shark. The data may ultimately allow us to predict when sharks may or may not be present under certain conditions and at specific times of the year. In turn, this may allow us to better coordinate fishing activities in order to reduce by-catch.
PSAT and acoustic telemetry study on the Greenland Shark in the St. Lawrence Estuary
Gallant, J. (GEERG, CEGEP de Drummondville), Worm, B. (Dalhousie University), Harvey-Clark, C. (GEERG, UBC)
Influence of Physical Variables on the Movement and Behaviour of the Greenland Shark (Somniosus microcephalus) in Shallow Water
Jeffrey Gallant, Université du Québec à Trois-Rivières (UQTR)
St. Lawrence River Estuary Tag Release and Receiver Deployment
Ocean Tracking Network
Stokesbury, M.J.W., C. Harvey-Clark, J. Gallant, B.A. Block, and R.A. Myers. 2005. Movement and environmental preferences of Greenland sharks (Somniosus microcephalus) electronically tagged in the St. Lawrence Estuary, Canada. Marine Biology 148, p. 159-165. DOWNLOAD PDF (289 KB)