Abstract
Changes in blood hemoglobin, hematocrit, leucocrit, osmolarity, lactate, glucose and cortisol concentrations were monitored in common carp, Cyprinus carpio, exposed to decreasing temperatures (from 24°C to 4°C). Two experiments [rapid change (acute) and slow change (chronic)] were conducted. In the acute experiment, it took 3 days for the decrease of water temperatures from 24°C to 4°C. In the chronic experiment, it took 33 days for the decrease of water temperatures from 24°C to 4°C. Blood lactate and hemoglobin concentrations, hematocrit, and leucocrit significantly (P 0.05) in the cold-treated common carp in both acute and chronic exposure. Data indicate that levels of blood lactate, hematocrit...
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