Fisheries Infosite

New Zealand Fisheries Assessment Report 2017/59 - Estimates of age frequency for black oreo from 2014 on southwest Chatham Rise (OEO 3A).


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FAR-2017-59-Age-frequency-black-oreo-OEO3A.pdf (624.5 kb)

Otoliths (n=600) were sampled mainly from the 2014 acoustic survey mark identification tows in management area OEO 3A to provide age frequencies by area (Area 1 and Area 2&3). The current study confirmed the results found in a previous ageing study that used data from 1997 to 2006, i.e., age distributions were similar in Area 1 and Area 2&3, and mean length at age was lower in Area 1 relative to that in Area 2&3.

Document date
Monday, 6 November 2017
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V 1.3
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Adobe PDF
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624.5 kb
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Monday, 6 November 2017

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Author: Doonan I.; McMillan P.; Ó Maolagáin C.;

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