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Initiation of feeding and salinity tolerance in the pacific lamprey Lampetra tridentata

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Abstract

Changes in salinity tolerance were determined during metamorphosis in Lampetra tridentata. Lampreys in Phase 5 of metamorphosis were unable to withstand salinities>13.4‰S, while those in Phase 6 survived direct transfer to sea water (30‰S). This abrupt change in tolerance coincided with the opening of the foregut lumen. Parasitic feeding began at the end of Phase 7 of metamorphosis following the completion of tooth development.

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Communicated by R.O. Fournier, Halifax

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Richards, J.E., Beamish, F.W.H. Initiation of feeding and salinity tolerance in the pacific lamprey Lampetra tridentata . Mar. Biol. 63, 73–77 (1981). https://doi.org/10.1007/BF00394664

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