AGE AND GROWTH OF LIZA-RAMADA (RISSO, 1826) IN THE RIVER TAGUS, PORTUGAL

• Tipo: Artigo em Revista Científica Internacional
• Data: 1995

Autores

Pedro Almeida (Autor) Outra; MOREIRA, FM (Autor) Outra; DOMINGOS, IM (Autor) Outra; COSTA, JL (Autor) Outra; ASSIS, CA (Autor) Outra; COSTA, MJ (Autor) Outra

Revista

Título: Scientia Marina

Vol. 59

Páginas: 143-147

ISSN: 0214-8358

Editora: CSIC - Consejo Superior de Investigaciones Científicas

Indexação

ISI Web of Knowledge - 6 Citações

Outras Informações

ID Authenticus: P-001-GVN

Abstract (EN): A sample of thin-lipped grey mullet, Liza ramada (Risso, 1826), from the River Tagus was examined for the purpose of age determination. The relation between the fish standard length (SL) and the total scale radius (SR) was: SL = 33.0 SR + 22.4. The following characterisics were established: that the scales that covered the mullet's body, near the pectoral fin, made their first appearance at a standard length of 22.4 mm; that annuli represented year marks, laid between January and February and; that: as the eclosion period did not match the season during which the annuli were laid, there was a one to six months difference between the fish real age and the age deduced by scale examination. von Bertalanffy growth equations for the River Tagus thin-lipped grey muller population are: males: SL(t) = 393.5 [1-e(-0.13(t+1.6))]; females: SL(t) = 457.9 [1-e(-0.12(t+1.5))] In fish with a SL larger than 288.6 mm the first annulus may be hiden by the scale calotte.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5