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Filtering by: Creator Olla, Bori L. Creator Ryer, Clifford H. Non-Academic Affiliation Hatfield Marine Science Center

Effect of light on juvenile walleye pollock shoaling and their interaction with predators

Creator:

Ryer, Clifford H. and Olla, Bori L.

Abstract:

Research was undertaken to examine the influence of light intensity on the shoaling behavior, activity and anti-predator behavior of juvenile walleye pollock Theragra chalcogramma. Under a 12 h light/12 h dark photoperiod, juveniles displayed a diurnal shoaling and activity pattern, characterized by fish swimming in cohesive groups during the day,...

Resource Type:

Article
Altered search speed and growth: social versus independent foraging in two pelagic juvenile fishes

Creator:

Ryer, Clifford H. and Olla, Bori L.

Abstract:

Prior studies have demonstrated that juvenile walleye pollock Theragra chalcogramma forage socially in schools for spatially and temporally clumped food, but forage more independently for spatially and temporally dispersed food. One advantage of social foraging is that fish in schools may be able to locate more food clumps than fish...

Resource Type:

Article