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European Climate Infrastructure and Environment Executive Agency
Splošne publikacije

Validating age-determination of anglerfish and hake

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Identifikacija
ISBN: 978-92-9460-203-9, doi: 10.2826/748632
Datum objave
15 januar 2020
Avtor
Izvajalska agencija za mala in srednja podjetja

Opis

Reliable measures of fish length-at-age are needed to estimate the biological reference points used in fish stock assessment.

These data are usually obtained by counting and measuring seasonal growth marks in otoliths or other calcified structures for a representative sample of the population.

For anglerfish (Lophius spp.) and hake (Merluccius merluccius) in the Northeast Atlantic, traditional age-estimation methods are unreliable. The assessments for these stocks are based on survey indices or are length-based and require accurate information on length-at-age. Without this information, accurate assessments and the estimation of MSY reference points are problematic.

Validating age-determination of anglerfish and hake_1

Datoteke

Validating age-determination of anglerfish and hake
English
(4.4 MB - PDF)
Prenesi