AEBR 138 Fish and invertebrate bycatch and discards in New Zealand ling longline fisheries from 1992–93 until 2011–12.

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AEBR_138_2794_DAE2010-02.pdf

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AEBR_138_2794_DAE2010-02.pdf (6.8 MB)

Abstract
Provides annual estimates of bycatch and discard levels in the ling longline fishery, based on observed catch per hook raised to the total fishery using commercial effort data. Ling made up about 68% of the observed catch; the main bycatch species were spiny dogfish (13%) and ribaldo (3%). Annual bycatch (mostly QMS species) was about 2000–4000 t; annual discards were about 1150–2460 t. Of 116 individual species examined, 14 showed a decreasing trend and 21 species an increasing trend in annual bycatch levels. Trends in bycatch rates of the main bycatch species showed little correlation with trawl survey time series.

Document date
Tuesday, 25 November 2014

Document type
V 1.3

File format
Adobe PDF

File size
6.8 MB

Reference number
138

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AEBR_138_2794_DAE2010-02.pdf

Uploaded date
Wednesday, 26 November 2014

Search tags

AEBR: 138;
ISSN: 1179-6480;
ISBN: 978-0-478-43796-6;
FishingMethod: Ling longline;
ResearchField: Fish and invertebrate by catch and discards;
Author: Anderson;

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