Summary
This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort. Results from 2010-2016 show that the probability of killer whale interactions in south-eastern Australia decreased in spring and with distance traveled by the vessel between fishing days, but increased with daily fishing effort. In Amsterdam/St. Paul, killer whale interactions increased with latitude.