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Providing evidence to improve practice

Individual study: Trials using shark liver oil to deter seabirds from eating bait during long-line fishing, Leigh, New Zealand

Published source details

Pierre J. & Norden W. (2005) Trials using shark liver oil to deter seabirds from eating bait during long-line fishing, Leigh, New Zealand. Conservation Evidence, 2, 99-100


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Use shark liver oil to reduce seabird bycatch Bird Conservation

A replicated, controlled experiment off the coast off north-east New Zealand (Pierre & Norden 2005) found that the number of dives made by seabirds in pursuit of pilchard baits behind a longline fishing vessel was dramatically lower (< 5 birds/min) when small quantities of shark liver oil were dripped onto the water behind the vessel than during control trials using vegetable oil (always > 30 birds/min) or sea water (20-40 birds/min). Diving birds were mainly flesh-footed shearwaters Puffinus carneipes, but also Buller's shearwaters Puffinus bulleri and white-faced storm petrels Pelagodroma marina.