Behavior of Antarctic Krill, Euphausia superba: Chemoreception, Feeding, Schooling, and Molting

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Science  22 Apr 1983:
Vol. 220, Issue 4595, pp. 433-435
DOI: 10.1126/science.220.4595.433


Krill do not feed by passive, continuous filtration but use area-intensive searching and various rapid feeding behaviors to exploit local high food concentrations. Chemicals alone at low concentrations, not particles, trigger feeding. Krill form dense schools that move rapidly and migrate primarily horizontally. Abrupt disruption of a school can trigger mass molting, and molts may act as decoys.