Mitigating Seal Interactions in the SRLF and the Gillnet Sector SESSF in South Australia

Authors: 

Goldsworthy, S.D., B. Page, P.D. Shaughnessy and A. Linnane

Year: 

2010

Journal/Publisher Name: 

SARDI Research Report Series

Publisher Address: 

SARDI Aquatic Sciences 2 Hamra Avenue West Beach South Australia, 5024 Australia

Volume (Issue #): 

No. 405.

Page #s: 

213

Contact information: 

Simon Goldsworthy SARDI Aquatic Sciences 2 Hamra Avenue West Beach South Australia, 5024 Australia 61-8-8207 5325 simon.goldsworthy@sa.gov.au
Summary: 

Bycatch of Australian sea lions in rock lobster and shark gillnet fisheries is a key threat to the species. This report outlines and assesses methods for mitigating bycatch in these fisheries in South Australia. Gear modification was considered in the rock lobster fishery and spatial closures in the shark gillnet fishery. Spikes of different heights were tested to deter sea lions from entering rock lobster pots. Entry success significantly decreased with spikes extending high up into the collar (70 mm + from base) compared to other treatment and control pots.