TAILIEUCHUNG - Maximum reproductive rate of fish at low population sizes

Short-term benefits have been noted in studies comparing immediate start of COC with conventional In a randomised trial, those who were quick started were more likely to start their second pack of pills (OR ; 95% CI –). However at 3 and 6 months, continuation rates were comparable between the two This study involved mainly socially deprived young Latino women and therefore these findings may not translate to other groups of women. Another randomised study comparing immediate start of the contraceptive patch with conventional start did not show any benefits in terms of continuation rates after follow-up over three A retrospective study of women receiving. | 2404 Maximum reproductive rate of fish at low population sizes Ransom A. Myers Keith G. Bowen and Nicholas J. Barrowman Abstract We examine a database of over 700 spawner-recruitment series to search for parameters that are constant or nearly so at the level of a species or above. We find that the number of spawners produced per spawner each year at low populations . the maximum annual reproductive rate is relatively constant within species and that there is relatively little variation among species. This quantity can be interpreted as a standardized slope at the origin of a spawner-recruitment function. We employ variance components models that assume that the log of the standardized slope at the origin is a normal random variable. This approach allows improved estimates of spawner-recruitment parameters estimation of empirical prior distributions for Bayesian analysis estimation of the biological limits of fishing calculation of the maximum sustainable yield and impact assessment of dams and pollution. Résumé Nous étudions une base de données comptant plus de 700 series géniteur-recrutement à la recherche de paramètres qui sont constants ou presque au niveau de l espece ou à un niveau hiérarchique supérieur. Nous avons trouvé que le nombre de géniteurs produits par géniteur chaque année dans des populations peu abondantes c est-à-dire le taux de reproduction annuel maximal est relativement constant dans une espèce et qu il y a peu de variation d une espèce à l autre. Cette valeur peut être interprétée comme une pente normalisée à l origine d une fonction géniteur-recrutement. Nous avons recours à des modèles de composantes de la variance selon lesquels le log de la pente normalisée à l origine est une variable aléatoire normale. Cette approche permet d obtenir de meilleures estimations des paramètres du rapport géniteur-recrutement une estimation des données empiriques avant les repartitions pour l analyse bayesienne une estimation des limites biologiques de .

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