Ohnishi, Shuhei and Yamakawa, Takashi and Okamura, Hiroshi and Akamine, Tatsuro (2012) A note on the von Bertalanffy growth function concerning the allocation of surplus energy to reproduction. Fishery Bulletin, 110(2), pp. 223-229.
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We propose an extended form of the von Bertalanffy growth function (VBGF), where the allocation of surplus energy to reproduction is considered. Any function can be used in our model to describe the ratio of energy allocation for reproduction to that for somatic growth. As an example, two models for energy allocation were derived: a step-function and a logistic function. The extended model can jointly describe growth in adult and juvenile stages. The change in growth rate between the two stages can be either gradual or steep; the latter gives a biphasic VBGF. The results of curve fitting indicated that a consideration of reproductive energy is meaningful for model extension. By controlling parameter values, our comprehensive model gives various growth curve shapes ranging from indeterminate to determinate growth. An increase in the number of parameters is unavoidable in practical applications of this new model. Additional information on reproduction will improve the reliability of model estimates.
|Title:||A note on the von Bertalanffy growth function concerning the allocation of surplus energy to reproduction|
|Journal or Publication Title:||Fishery Bulletin|
|Page Range:||pp. 223-229|
|Issuing Agency:||United States National Marine Fisheries Service|
|Depositing User:||Patti M. Marraro|
|Date Deposited:||07 Jun 2012 14:47|
|Last Modified:||07 Jun 2012 14:47|
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