Foraging Dynamics of a Domesticated Strain of Brook Trout

The Brook Trout Salvelinus fontinalis is an economically important salmonid that has been stocked worldwide. Because of the difficulty culturing southern Trout, domesticated northern have throughout southeastern United States. Little research dedicated to understanding foraging dynamics various forms species occur within streams. Given water velocity shown a strong influence on habitat selection and prey capture in drift feeders, we examined effects velocity, fish size, days captivity, dominance status, size rank success, holding reactive distance for northern-strain Trout. Prey success declined with increasing velocities (10–50 cm/s), was positively related dominant individuals captured more than subordinates. Reactive distances were not strongly or consistently affected by any treatment variables. Compared recent studies there few differences between strains their behavior, suggesting our results apply generally. Various should exhibit high up 30 cm/s.