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Control of Chironomids in Milkfish (Chanos chanos) Ponds with Abate (R) (Temephos) Insecticide
Author(s) -
Tsai ShanChing
Publication year - 1978
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1978)107<493:cocimc>2.0.co;2
Subject(s) - milkfish , biology , benthic zone , fishery , toxicology , aquatic animal , labeo , algae , ecology , aquaculture , fish <actinopterygii>
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 (R) , O, O, Oˈ, Oˈ‐tetramethyl O, Oˈ‐thiodi‐p‐phenylene phosphorolhioate) 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% EC to 13 other species of aquatic animals was determined in the laboratory.