Mitigation of incidental mortality of Australian sea lions in the west coast rock lobster fishery

Authors
Campbell, R.
Year
Journal/Publisher Name
Endangered Species Research
Volume (Issue #)
5
Page #s
345-358
Contact information
R. Campbell: richard.campbell@fish.wa.gov.au
Summary

Pot-gear modifications or sea lion exclusion devices (SLEDs) were tested in the Australian West Coast rock lobster (Panulirus cygnus) pot fishery to reduce bycatch of Australian sea lion (Neophoco cinerea) pups and juveniles. Although low levels of interactions in this preliminary study make testing the efficacy of the gear modification difficult, early tests indicate the SLEDs do not reduce rock lobster catch in shallow water. In deep water, redneck-batten and redneck-bolt pots reduced lobster catches but in fingerneck-bolt pots, there was no significant difference in catch from normal pots. Pot-gear modifications are mandatory in this fishery.

Field Studies

Mitigation of incidental mortality of Australian sea lions in the west coast rock lobster fishery

Study Type
Field study in the wild
Location
Western Australia
Target catch
Western Rock Lobster (Panulirus cygnus)
Effect on bycatch species
20mm SLED setting (maximum SLED-neck gap of 132 mm) resulted in a 95% exclusion of Australian sea lions from pots
Effect on target catch
Do not reduce target catch in shallow water; varied effects in deep water
Fishing Gear