Fisheries Depredation by Killer and Sperm Whales, Behavioural Insights, Behavioural Solutions
Fisheries Depredation by Killer and Sperm Whales, Behavioural Insights, Behavioural Solutions
October 2-5, 2006 Pender Island, BC Hosted by the Vancouver Aquarium

 

Indicators

Participants in the workshops came up with the following indicators as useful guidelines for detecting possible depredation by whales:

  • Presence of cetaceans
  • Observed depredation (surface observations)
  • Evidence of damaged fish on the line
  • Evidence of damaged gear
  • Gear/cetacean interactions (tugging, entanglement)
  • Bare hooks
  • Cetacean behavior (diving, location in relation to vessel and gear)
Vancouver Aquarium
Whale Image Montage