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Cost of swimming by Daphnia during diel vertical migration
Author(s) -
Dawidowicz Piotr,
Loose Carsten J.
Publication year - 1992
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1992.37.3.0665
Subject(s) - diel vertical migration , daphnia , fecundity , biology , ecology , environmental science , zoology , crustacean , population , demography , sociology
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.