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Age and growth of the forkbeard Phycis phycis (Gadidae) from the Azorean archipelago, North Atlantic

Published online by Cambridge University Press:  15 May 2009

Ana Rita Costa Abecasis ,
Angela Canha ,
Dália Reis ,
Mário Rui Pinho  and
João Gil-Pereira
Ana Rita Costa Abecasis*
Affiliation:
Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de Santa Cruz, 9901-862 Horta, Portugal
Angela Canha
Affiliation:
Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de Santa Cruz, 9901-862 Horta, Portugal
Dália Reis
Affiliation:
Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de Santa Cruz, 9901-862 Horta, Portugal
Mário Rui Pinho
Affiliation:
Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de Santa Cruz, 9901-862 Horta, Portugal
João Gil-Pereira
Affiliation:
Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de Santa Cruz, 9901-862 Horta, Portugal
*
Correspondence should be addressed to: A.R.C. Abecasis, Departamento de Oceanografia e Pescas, Universidade dos Açores, Cais de Santa Cruz, 9901-862 Horta, Portugal email: [email protected]
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Abstract

The forkbeard Phycis phycis is one of the main target species of the demersal fishery in the Azores, north-eastern Atlantic. Age and growth of the forkbeard were studied using 477 otoliths from individuals caught between April 2000 and August 2004. Otoliths were burned and sectioned, a preparation method that improved the easiness of readings. Individuals ranged from 21 to 71 cm in total length, and their estimated ages between 2 and 18 years old. Forkbeard is a relatively slow growing, long lived species, that does not show sexual dimorphism in growth. The von Bertalanffy growth parameters estimated for the Azorean forkbeard were L∞ = 79.64 cm, k = 0.09 yr−1 and t0 = −1.88 years.

Keywords

Phycis phycisforkbeardagegrowthotoliths
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Issue 3 , May 2009 , pp. 629 - 633
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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