Download AEBR 163 Fish and invertebrate bycatch and discards in New Zealand hoki, hake, or ling trawl fisheries from 1990-91 until 2012-13

This report provides estimates of annual levels of bycatch and discards in the New Zealand hoki, hake, and ling target trawl fishery for 1990–91 to 2012–13, using commercial catch-effort data to scale up rates calculated from the observed portion of the fishery. Hoki, hake, and ling accounted for about 91% of the total catch; the main bycatch species were silver warehou, javelinfish, rattails, and spiny dogfish. Annual bycatch ranged from about 12 020 t to 37 730 t; annual discards ranged from about 3699 t to about 16 633 t.