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The feeding behavior of Daphnia pulex from Lake Winnebago, Wisconsin 1
Author(s) -
Berman Mark S.,
Richman Sumner
Publication year - 1974
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.1974.19.1.0105
Subject(s) - daphnia pulex , daphnia , cladocera , pulex , particle (ecology) , biomass (ecology) , biology , algae , selection (genetic algorithm) , branchiopoda , environmental science , ecology , crustacean , artificial intelligence , computer science
The feeding behavior of Daphnia pulex from Lake Winnebago was studied under conditions approximating those in the lake and in lake water enriched with algae in mixed culture. When one size particle offered a significantly larger biomass than the others in the water, the animals selected for the abundant particle; selection seemed to increase with increasing particle concentrations until consumption of the particle was maximized. When this mechanism was in operation, filtering rates on other particles were reduced. However, when the concentrations (by biomass) of all particles were approximately equal, selection was for small particles present in high numbers.