Effects of naphthalene on the hemoglobin concentration and oxygen uptake of daphnia magna
In addition to acute testing for survival of Daphnia magna exposed to naphthalene, various physiological tests were made. Short term studies were conducted to calculate LC50 values and physiological responses. Daphnia of 24 h were fed initially 0.25 ml food/l and the pH, dissolved oxygen and temperature, conductivity, swimming movements, and the number of survivors were determined at 0, 24, and 48 h. These experiments were run at least three times and the dosage-mortality curves were determined by the use of probit and regression analyses. Physiological studies were made for concentrations of 1, 5, and 10 mg/l. Oxygen consumption of Daphnia was measured polarographically and a carboxyhemoglobin method was used to measure total hemoglobin. The hemoglobin concentrations of the treated organisms decreased from 102 nmoles/animal at 1 mg/l naphthalene to 67 nmoles/animal at 9 mg/l. Oxygen uptake decreased from 37 nmoles/animal/h at 1 mg/l to 28 nmoles/animal/h at8 mg/l. Results show that hemoglobin concentration and oxygen uptake may be useful tools in assessing water quality and its effects on the biota. (JMT)
- Research Organization:
- Oklahoma State University, Stillwater
- OSTI ID:
- 5732189
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Vol. 28:1
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of lead on delta-aminolevulinic acid dehydratase activity, growth, hemoglobin content, and reproduction in Daphnia magna
Influence of food, aquatic humus, and alkalinity on methylmercury uptake by Daphnia magna
Related Subjects
NAPHTHALENE
TOXICITY
BIOLOGICAL EFFECTS
DAPHNIA
DOSE-RESPONSE RELATIONSHIPS
HEMOGLOBIN
MORTALITY
OXYGEN
POLAROGRAPHY
RESPIRATION
ANIMALS
AQUATIC ORGANISMS
AROMATICS
ARTHROPODS
BRANCHIOPODS
CARBOXYLIC ACIDS
CONDENSED AROMATICS
CRUSTACEANS
ELEMENTS
GLOBIN
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INVERTEBRATES
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PIGMENTS
PORPHYRINS
PROTEINS
560304* - Chemicals Metabolism & Toxicology- Invertebrates- (-1987)