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Accommodation of Daphnia pulex to altered pH conditions as measured by feeding rate 1
Author(s) -
Kring R. Lynn,
O'Brien W. John
Publication year - 1976
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.1976.21.2.0313
Subject(s) - daphnia pulex , daphnia , pulex , branchiopoda , biology , zoology , population , cladocera , ecology , crustacean , demography , sociology
The maximal feeding rate of cladoceran populations occurs at or near the temperature and pH at which the animals were raised, suggesting that cladocerans may be able to alter their maximal feeding rates upon prolonged exposure to different conditions. Feeding rates of a population of Daphnia pulex collected from water of pH 7.7 to 7.9 and cultured in water of the same pH and pH 6.5 to 6.6 were measured over a wide range of pH conditions. Within 6 weeks to 2 months of exposure to the lowered pH, the population was able to feed maximally at the new pH.