Fisheries Infosite

Acoustic survey of spawning hoki in Cook Strait during winter 2011.

Filename
12_17_FAR.pdf

Link to file
12_17_FAR.pdf (2.1 MB)

Abstract
Six acoustic snapshots of spawning hoki abundance in Cook Strait were carried out from FV Thomas Harrison and FV Independent 1 between 18 July and 27 August 2011. Acoustic abundance estimates calculated using an average ratio of hoki weight to target strength ranged from 154 000 t to 429 000 t, with an average of 269 000 t (c.v. 35%). Biological data were collected from 27 trawls. Hoki from the Narrows Basin were predominantly male and were smaller (mean length 63 cm) than hoki from the main Cook Strait Canyon (mean length 79 cm).


Document date
Monday, 28 May 2012
Document type
V 1.3
File format
Adobe PDF
File size
2.1 MB
Reference number
978-0-478-38845-9
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Uploaded from
12_17_FAR.pdf

Uploaded date
Monday, 28 May 2012

Search tags
Author: R. L. O’Driscoll;
FishingMethod: Trawling;
ResearchField: Accoustic survey;
ScienceStock: Deepwater;
Species: HOK; HOKI;
Stock: HOK;

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