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Journal Article

Cost of swimming by Daphnia during diel vertical migration

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons56638

Dawidowicz,  Piotr
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons56801

Loose,  Carsten J.
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Dawidowicz, P., & Loose, C. J. (1992). Cost of swimming by Daphnia during diel vertical migration. Limnology and Oceanography, 37(3), 665-669.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-E45A-8
Abstract
Daphnia hyalina was grown under simulated conditions of diurnal vertical migration in vertical flow chambers, and its life-history parameters were evaluated. The amplitudes of the migrations were 3 and 60 m d-1; food conditions were 0.1 and 1.0 mg C liter-1. None of the investigated parameters (fecundity, individual growth rate, age of maturation) was significantly different between long- and short-distance migrating populations at high levels of food, whereas at low levels of food only the individual growth rate was higher in the short-distance migrating Daphnia. These results suggest that the energy spent to travel the vertical distance does not account for the metabolic costs of diurnal vertical migration.