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We utilized a unique opportunity to study the growth and bioenergetics of a highly migratory and commercially valuable marine fish under controlled environmental conditions. We maintained yellowfin tuna (Thunnus albacares) in holding tanks throughout a twenty-year period, routinely collecting data on mass and length of individual fish over time. The water temperature of the holding tanks was maintained...
Tuna bioenergetics can be described by the following relationship: the energy available for growth is equal to the food energy minus all metabolic costs. These costs include routine metabolic rate, specific dynamic action, increased activity level, eliminated waste, and gonadal development. Captive populations of Pacific bluefin tuna (Thunnus orientalis) were held at ~20°C in fiberglass tanks and...
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