Fisheries Infosite

FAR 2017/08 Trawl survey of hoki and middle depth species on the Chatham Rise, January 2016 (TAN1601).


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FAR-2017-08-Hoki-trawl-survey-TAN1601.pdf (8.0 MB)

The 24th Chatham Rise trawl survey was carried out 3 January to 2 February 2016. In 2016 the survey area was successfully extended to cover to 800–1300 m depths around the entire Rise. In total 139 stations were completed - 84 core (200–800 m) phase 1, 9 core phase 2 and 46 deep (800–1300 m). The estimates of relative core biomass were hoki 114 514 t (CV 14.2%), hake 1299 t (CV 18.5%) and ling 10 201 t (CV 7.2%). The deep strata provide relative biomass indices for a range of deepwater sharks and other species associated with orange roughy and oreo fisheries. Acoustic indices of mesopelagic fish were higher than in 2014.

Document date
Friday, 7 April 2017
Document type
V 1.3
File format
Adobe PDF
File size
8.0 MB
Reference number
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Uploaded date
Friday, 7 April 2017

Search tags
Author: Ballara, S.L.; Ladroit, Y.; O’Driscoll, R.L.; Stevens, D.W.;
FishingMethod: Trawl survey;
ResearchField: Chatham Rise; Hoki; middle depth species; trawl survey;
ScienceStock: Deepwater;
Species: Hoki;

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