Nebraska Cooperative Fish & Wildlife Research Unit
Development and Evaluation of a Bioenergetics Model for the Inland Silverside in Freshwater Systems
Date of this Version
Consumption and respiration parameters were fit for inclusion in a bioenergetics model developed to predict the growth of the inland silverside Menidia beryllina. Although this model accurately predicted inland silverside growth through the initiation of spawning, it failed to predict the growth of reproductively active inland silversides. Model simulations provided initial evidence that a single model cannot predict the lifetime growth patterns of this species. Instead, a two-stage model is probably necessary to account for the physiological differences between the prespawning and active-spawning stages. In addition, the bioenergetics models of short-lived (life span,< 2 years) fishes may need to include a better means for assessing the direct energy expenditure for reproduction.
Published by Transactions of the American Fisheries Society 137:254–261, 2008, DOI: 10.1577/T05-064.1