Studies on age determination and growth pattern of the wedge sole Dicologoglossa cuneata (Moreau, 1881) in the Spanish waters of the Gulf of Cadiz (southwest Iberian Peninsula)
ABSTRACT The wedge sole Dicologoglossa cuneata (Moreau, 1881) is a typical coastal soleid which is considered as one of the main target species in the demersal fishery of Spain fs southern Atlantic region. This paper presents a study on the growth pattern of wedge sole in the Gulf of Cadiz. Age was...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2001 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/325368 |
| Acesso em linha: | http://hdl.handle.net/10261/325368 |
| Access Level: | acceso abierto |
| Palavra-chave: | Pesquerías Centro Oceanográfico de Cádiz Dicologoglossa cuneatai Wedge solea Age Growth Gulf of Cadiz Acedía Edad Crecimiento |
| Resumo: | ABSTRACT The wedge sole Dicologoglossa cuneata (Moreau, 1881) is a typical coastal soleid which is considered as one of the main target species in the demersal fishery of Spain fs southern Atlantic region. This paper presents a study on the growth pattern of wedge sole in the Gulf of Cadiz. Age was determined by observing and analysing whole otoliths (sagittae), thereby obtaining the mean lengths at age for males and females in the year 1993 (from 15-20.9 cm TL and 1-4 years for males; from 15.9-23.6 cm TL and 1-6 years for females). In addition, the growth parameters for both sexes were obtained according to the Von Bertalanffy equation: L ‡ = 24 cm, K = 0.343 and t0 = .1.384 for males; L ‡ = 27 cm, K = 0.296 and t0 = .1.520 for females (showing growth differences growth between the sexes). These were compared with results reported by other authors for other areas of the species fs distribution range. Through the interpretation of the otolith and its edge, a sequence of annual rapid- and slow-growth rings was observed; otoliths with an opaque edge (rapid growth) showed the highest percentages in the period from May to October. Mean otolith diameters for each of the estimated ages were calculated, as well as the body length/otolith diameter relationship: a = .12.631 and b = 61.033 (r2 = 0.70). |
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