Catch-at-age data for southern bluefin tuna in the New Zealand long line fishery, 2015–2018 seasons / A. Sutrovic, K. Krusic-Golub.

By: Sutrovic, A.
Contributor(s): Fisheries New Zealand (Government agency).
Material type: materialTypeLabelBookSeries: New Zealand fisheries assessment report: 2021/25Publisher: Wellington, New Zealand : Fisheries New Zealand, Tini a Tangaroa, 2021Description: 1 online resource (24 pages).ISBN: 9781991003805.Other title: Catch-at-age data for Southern Bluefin Tuna in the New Zealand long line fishery [Running title].Subject(s): FISHERIES | NEW ZEALANDOnline resources: FAR 2021/25 Fisheries Infosite | NIWA document server Summary: 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 2015 to 2018. A total of 361 otoliths were aged during this project. Age estimates ranged from 2-27 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.
List(s) this item appears in: New Zealand Fisheries Assessment Report
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"May 2021."

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 2015 to 2018. A total of 361 otoliths were aged during this project. Age estimates ranged from 2-27 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.

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