Fisheries Infosite

FAR 2023/23 Catch-at-age data for southern bluefin tuna in the New Zealand longline fishery, 2019โ€“2021


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FAR-2023-23-Catch-At-Age-For-Southern-Buefin-Tuna-2019-2021-4365.pdf (2.4 MB)

The collection of long-term age data is a requirement for countries fishing for Southern Bluefin Tuna.  This report describes the age estimation of otoliths collected from the New Zealand longline and recreational fishing sector between 2019 to 2021.  A total of 238 otoliths were aged during this project. Age estimates ranged from 3–24 years and as in previous years there were few samples less than 4 years of age.  No modal progression of age classes was observed with the age composition data. 

Document date
Friday, 28 April 2023
Document type
V 1.3
File format
Adobe PDF
File size
2.4 MB
Reference number
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Uploaded date
Friday, 28 April 2023

Search tags
FAR: 2023/23;
ISSN: 1179-5352;
ISBN: 978-1-991080-55-4;
Author: Krusic-Golub; Sutrovic; Barrow;

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