DURBIN and DURBIN: ENERGY AND NITROGEN BUDGETS FOR ATLANTIC MENHADEN 



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FORAGING SPEED 



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PLANKTON CONCENTRATION 

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FORAGING TIME 

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24 



Figure 1. — Model I energy budget for the Atlantic menhaden at 20 C, where: A, foraging speed) s) increases, while plankton concentration (c) 

 and foraging time (h) remain constant; B, plankton concentration increases, while foraging speed and foraging time remain constant: and C. 

 foraging time increases, while foraging speed and plankton concentration remain constant. Al, Bl, and CI represent energy intake (R K and 

 pR K ); A2, B2, and C2, the energy output (T r K , T, K , E K ); A3, B3.and C3 compare the intake and output of energy and show the surplus energy 

 which is available for growth: A4, B4, and C4 illustrate growth and gross growth efficiency. 



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