Consulta: subjectFacets:"Age validation"
Registros recuperados: 2
Data/hora: 11/06/2024 11:57:24

Evidence of underestimation of European hake growth in the Bay of Biscay, and its relationship with bias in the agreed method of age estimation
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: De Pontual, Helene; Groison, Anne-laure; Pineiro, Carmen; Bertignac, Michel.
In 2002, a pilot experiment on hake tagging was carried out using methodology specifically developed to catch and handle fish in,good condition. By the end of 2005, 36 hake and five tags had been returned to the laboratory (a 3.1% return rate) with a maximum time at liberty of 1066 days. The somatic growth of the recoveries proved to be twofold higher than that expected from published von Bertalanffy growth functions for the species in the Bay of Biscay. The growth underestimation was related to age overestimation, as demonstrated by two independent analyses. The first was based on a blind interpretation of marked otoliths conducted independently by two European experts involved in the routine age estimation of hake. The result shows that the age estimates...
Tipo: Text
Palavras-chave: Tagging; Otolith; Merluccius merluccius; Growth; European hake; Age validation; Age estimation method; Age.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2221.pdf

Biology of growth of Hoplias aff. malabaricus (Bloch, 1794) in a shallow pampean lake (Argentina)
Provedor de dados: Neotropical Ichthyology
Autores: Balboni,Leandro; Colautti,Dario César; Baigún,Claudio Rafael Mariano.
The trahira Hoplias aff. malabaricus is a top predator in pampean shallow lakes and is highly appreciated by recreational anglers and artisanal fishermen. Trahira growth from Yalca shallow lake was determined by lepidological analysis and age validated by marginal increment. When growth was fitted to the von Bertalanffy model, annual classes exhibited a bimodal pattern as a result of the presence of spring and summer annual cohorts associated with a three month spawning season, each period in turn showing different growth patterns. The trahira population-age structure at Yalca shallow lake showed a truncated profile with very low numbers of large adults and few individuals older than three to four years, thus producing an unbalanced length-structure...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age validation; Biological indices; Neotropical fish; Piscivorous fish; Trahira.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200022