A bioenergetics model of walleye pollock (Theragra chalcogramma) in the eastern Bering Sea: Structure and documentation

Abstract

The need for developing a bioenergetics model for walleye pollock in the eastern Bering Sea has been previously established. The "Fish Bioenergetics Model 2" of Hewett and Johnson was adapted to walleye pollock. Appropriate submodels for consumption, respiration, egestion, and excretion were selected and parameterized. Seasonal aspects of growth, reproduction, caloric density, and diet composition of walleye pollock are described, as well as the seasonal water temperature and the caloric density of walleye pollock prey. The synthesis of published and unpublished data required for parameter estimates and seasonal descriptions is documented and discussed for each aspect of the bioenergetics model.


View Online  (.pdf, 444 KB).