Control of chironamics in milkfish (Chanos chanos) ponds with Abate (Temephos) insecticide
Larval chironomids (Chironomus longilobus (Kieffer) are serious competitors with milkfish Chanos chanos (Forskal) for benthic algae in commercial milkfish ponds in Taiwan. Chironomid larvae were effectively killed with temephos (Abate, 0, 0, 0', 0'-tetramethyl 0, 0'-thiodi-p-phenylene phosphorothioate) 50% emulsifiable concentrate when it was diluted 1:2,000 with seawater and applied to milkfish ponds to establish a concentration of 0.050 mg/liter of the active ingredient. This treatment did not harm milkfish and benthic algae. Residues found in the edible portions of milkfish after seven applications of Abate 50% emulsifiable concentrate ranged from 0.02 to 0.08 mg/kg, well below the 1.0 mg/liter approved by the World Health Organization for presence in human drinking water. The acute toxicity of Abate 50% emulsifiable concentrate to 13 other species of aquatic animals was determined in the laboratory.
- Research Organization:
- Taiwan Fisheries Research Inst., Tainan
- OSTI ID:
- 5637824
- Journal Information:
- Trans. Am. Fish. Soc.; (United States), Vol. 107:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
60 APPLIED LIFE SCIENCES
AQUACULTURE
INSECTICIDES
DOSE-RESPONSE RELATIONSHIPS
BENTHOS
FISHES
LARVAE
PONDS
QUANTITATIVE CHEMICAL ANALYSIS
THIOPHOSPHORIC ACID ESTERS
TOXICITY
ANIMALS
AQUATIC ORGANISMS
CHEMICAL ANALYSIS
ESTERS
ORGANIC COMPOUNDS
PESTICIDES
VERTEBRATES
520100* - Environment
Aquatic- Basic Studies- (-1989)
553000 - Agriculture & Food Technology