Aquat. Living Resour.
Volume 11, Number 5, September 1998
|Page(s)||315 - 324|
|Published online||15 September 1998|
A model for the phenotypic plasticity of North sea herring growth in relation to trophic conditions
Laboratoire de mathématiques appliquées à l'exploitation des ressources halieutiques et aquacoles, rue de l'île d'Yeu, BP 21105, 44311 Nantes cedex 3, France
Accepted: 27 August 1998
An adaptation of the von Bertalanffy growth model is formulated to describe the phenotypic plasticity of fish somatic growth in relation to trophic conditions. The model is developed for the North sea Downs herring (Clupea harengus). It suggests that annual growth variability during 1974-1990 was mainly due to the combined effects of herring abundance and wind-induced turbulence (coincident with the spring stratification of the water column). Springtime turbulences cause reduced and delayed planktonic blooms preceding the annual foraging period of Downs herring. The negative relation observed between herring abundance and growth is hypothesized to be due to intra-specific competition for trophic resources. Incorporated into the calculation of yield per recruit, the established growth model provides slightly more optimistic diagnoses while dropping the classic assumption of constant weight at age.
Key words: Growth model / density dependence / phenotypic plasticity / fishery management / Clupea harengus / North sea herring
© Elsevier, IRD, Inra, Ifremer, Cemagref, CNRS, 1998
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.