Toxic effects of residual chlorine on larvae of Hydropsyche pellucidula (Trichoptera, Hydropsychidae): A proposal of biological indicator
- Centro de Investigacion y Tecnologia del Inst. Nacional de Investigaciones Agrarias, Madrid (Spain)
Elemental chlorine (Cl{sub 2}) and other chlorine compounds, such as chloramines and hypochlorites, have been used as important bactericides in disinfection of drinking waters for many years. Residual chlorine concentrations in municipal water supplies are normally between 0.5 and 2 mg/L. In water at pH values above 5, elemental chlorine and hypochlorite compounds react rapidly, resulting in the formation of hypochlorous acid (HOCl) in equilibrium with hypochlorite ions (OCL-). Very little is known about the toxicity of residual chlorine on aquatic insects that comprise the macroinvertebrate communities of freshwater ecosystems. This study examines the toxic effects of municipal chlorinated waters on larvae of Hydropsyche pellucidula (Curtis), a common insect species in macrobenthic communities of rivers and streams in the Iberian Peninsula and other European countries, evaluating implications on their life cycles. Field and laboratory studies were performed in order to reach these goals.
- OSTI ID:
- 7278776
- Journal Information:
- Bulletin of Environmental Contamination and Toxicology; (United States), Vol. 47:2; ISSN 0007-4861
- Country of Publication:
- United States
- Language:
- English
Similar Records
Survival and behavioral responses of larvae of the caddis fly Hydropsyche angustipennis to copper and diazinon
Hypochlorite oxidation of morpholine-borane
Related Subjects
CHLORINE
TOXICITY
WATER POLLUTION
BIOLOGICAL INDICATORS
AQUATIC ORGANISMS
CHLORAMINES
DISINFECTANTS
INSECTS
LARVAE
LIFE CYCLE
AMINES
ANIMALS
ARTHROPODS
ELEMENTS
GERMICIDES
HALOGENS
INVERTEBRATES
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
560300* - Chemicals Metabolism & Toxicology