Consulta: subjectFacets:"Length weight relationships"
Registros recuperados: 5
Data/hora: 09/06/2024 10:24:12

Estimation du stock naturel d'ormeaux (Haliotis tuberculata) dans la region de Saint-Malo.
Provedor de dados: 5
Autores: Clavier, J; Richard, O.
Abundance and biomass of an unexploited ormer population in the vicinity of Saint-Malo (northern Brittany) are estimated using a stratified sampling technique. Examinations are made be diving at 200 sites. The mean biomass of the population is about 400 tons but the stock is not evenly distributed over the studied area: the greatest densities are observed on schist substrate. Size and weight frequency distribution reveal a "top-heave" structure due to an accumulation of old individuals with low production.
Tipo: Text
Palavras-chave: Haliotis tuberculata; Marine mollusks; Length weight relationships; Potential yield; Stock assessment.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1793.pdf

Characteristics of one sea winter Atlantic salmon stock caught on Elorn river from 1974 to 1984
Provedor de dados: 5
Autores: Prouzet, Patrick; Gaignon, Jean-louis.
From observations gathered on grilse populations sampled during the fishing period (March -mid-June) or after the fishing season, the authors noted: a strong heterogeneity and length, the mean value of which increase from May to December, a sex-ratio not different from 1 male for 1 female, a high relative fecundity superior to those of spring salmon population sampled. The comparison between fish of local and foreign origins did not allow to observe significant differences between the biological characteristics studied (weight, length, sex-ratio and fecundity).
Tipo: Text
Palavras-chave: Salmo salar; Salmonidae; Pisces; Weight; Fecundity; Sex ratio; Length weight relationships; Migratory species.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1818.pdf

Poissons de l'Atlantique Nord-Est  : Relations Taille-Poids
Provedor de dados: 5
Autores: Dorel, Didier.
This report corresponds to a compilation of length-weight relationships for the main fin-fishes of French north-east Atlantic commercial fisheries, completed by minimal legal lengths. When known, other parameters have been added such as length/age scale, length at first spawning and the 50 % retention length (L 50) according to legal mesh-sizes.
Tipo: Text
Palavras-chave: Clés taille / poids; Atlantique Nord Est; Poissons commerciaux; North east Atlantic; Length weight relationships; Commercial fin fishes.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/rapport-1289.pdf

Les Sars Deplodus sargus (Linne 1758) du Golfe du Lion: croissance et caracteristiques des debarquements aux criees de Sete et du Grau-du-Roi.
Provedor de dados: 5
Autores: Man-wai, Rabenevanana; Quignard, Jean-pierre.
Age and growth of seabream D. sargus in the Gulf of Lions (Mediterranean Sea) were examined using scale reading. Growth was expressed by the von Bertalanffy's equation based on the estimation of total lengths at the time of annual ring formation. The growth in weight and the length-weight relationship were calculated for both sexes separately and combined during and after spawning periods. Preliminary investigations on the characteristics of commercial catches (from Sete and Grau-du-Roi commercial fishing grounds) were also carried out.
Tipo: Text
Palavras-chave: Diplodus sargus; Sparidae; Pisces; Fishing grounds; Spawning; Fishery biology; Age determination; Fish catch statistics; Length weight relationships; Scale reading; Growth.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1845.pdf

Etude de la croissance des baudroies, Lophius piscatorius et L.budegassa , de l'Atlantique nord-est obtenue a partir de l'illicium.
Provedor de dados: 5
Autores: Dupouy, Herve; Pajot, Régis; Kergoat, Bernard.
The growth in length of the two European anglerfishes (Lophius piscatorius and L. budegassa ) was studied from samples collected in ICES areas VII and VIII during 1984. Because of the difficulty on otoliths reading, a method based on illicium sections was developed. Moreover, morphological features of the sections can be useful in separating the two species. The location of winter rings was measured; length-frequency analysis and backcalculation was used as a first attempt to validate direct ageing.
Tipo: Text
Palavras-chave: Lophius budegassa; Lophius piscatorius; Length weight relationships; Age determination; Growth.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1794.pdf