Data/hora: 08/06/2024 12:35:50

Provedor de dados: | 20
País: | Belgium

Título:

Estudios sobre la edad y crecimiento de la Palma Calamus brachysomus (Lockington) (Pisces: Sparidae) en aguas ecuatorianas

Studies on the age and growth of the Palm Calamus brachysomus (Lockington) (Pisces: Sparidae) in Ecuadorian waters

Autores: | Martínez, J.
Data: | 2009-10-08
Ano: | 1985
Palavras-chave: | Demersal fisheries; Age; Growth; Growth curves; Otoliths; Otolith reading; Demersal fisheries; Growth; Otoliths; Age; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_27091; Http://aims.fao.org/aos/agrovoc/c_186.
Resumo: | 342 specimens of sparid Calamus brachysomus ”Palma”, collected during a demersal trawl survey by the R. V. Tohallí in April and May1983, were examined. The different techniques used to prepare scales and otoliths for ageing are described and analysed. The otoliths were determined to be the most reliable for ageing studies; 87% of otoliths were readable. The rings observed were assumed to be annual. The mean lengths at age were used to determine the parameters of the Von Bertalanffy growth formula, giving: Lt=50.13(1-e-0.1473(t+2.0704)). The growth curve obtained must be considered provisional due to possible biases in the interpretation of the otoliths, and also due to those arising from the selectivity of the fishing gear.
Tipo: | Journal Contribution
Idioma: | Espanhol

Identificador:

Boletín Científico y Técnico, 8(4). p. 51-62

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http://hdl.handle.net/1834/3226

Editor: | INP (Ecuador)