Data/hora: 06/06/2024 07:50:30

Provedor de dados: 	5	
País: 	France	
Título: 	Growth of Northwest Iberian juvenile hake estimated by combining sagittal and transversal otolith microstructure analyses	
Autores: 	Pineiro, C; Rey, J; De Pontual, Helene; Garcia, A.	
Data: 	2008-09	
Ano: 	2008	
Palavras-chave: 	NW Iberian waters; Seasonal variation; Daily growth; Otolith microstructure; Juvenile hake.	
Resumo: 	Daily growth of Atlantic juvenile hake from Northwest Iberia has been estimated employing a new approach combining analyses of transversal and sagittal sections of the otoliths along the ventral radius. Age of juvenile hake ranging from 3 to 25 cm collected during a spring 2002 survey was estimated. Somatic growth followed a power fit: Fish size (TL) = 3.3254*age(0.7336) (r(2) =0.87, p &lt; 0.001, n = 76). yielding an average individual growth rate of 0.66 mm/day (0.06). The growth model indicates that after a year's life a juvenile can reach 25 cm. Otolith ventral radius ranged from 401 to 1842 mu m and daily increments were between 104 and 387. Fish growth and otolith growth were closely related (r(2) = 0.92 p &lt; 0.001, n = 76). These first results of daily growth rates for the Southern stock corroborate the fast-growth hypothesis of this species. The evolution of increment widths from hatch dates onwards reveals important seasonal growth peaks during July-August and October-November. A comparison with prior data and discussion is also presented in the light of recent work on hake juveniles and tagging-recapture experiences. (c) 2008 Elsevier B.V. All rights reserved.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2008/publication-6111.pdf

DOI:10.1016/j.fishres.2008.04.001	
Editor: 	Elsevier	
Relação: 	http://archimer.ifremer.fr/doc/00000/6111/	
Formato: 	application/pdf	
Fonte: 	Fisheries Research (0165-7836) (Elsevier), 2008-09 , Vol. 93 , N. 1-2 , P. 173-178	
Fonte: 	2008 Elsevier