Measurement of fecal coliform bacteria from domestic waste

Kim, Dong‐Hee; Sack, W A; Gera, Dinesh

doi:10.1080/02772249609358367

Cited by 2 publications

(1 citation statement)

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“…However, an involvement of the physical and chemical characteristics of septic tank water cannot be ruled out, although mud loach is one of the Þsh species most resistant to impacts of environmental factors and contamination in aquatic environments (Park andKim 2001, Cho et al 2012). In anaerobic systems, one would think that it was oxygen deprivation because BOD increases with the increase in the bacteria colonies (Kim et al 1996). However, the three parameters that seem to have major differences between AST and AnAST were pH, turbidity, and TOC.…”

Section: Discussionmentioning

confidence: 98%

Predation and Control Efficacies ofMisgurnus mizolepis(Cypriniformes: Cobitidae) TowardCulex pipiens molestus(Diptera: Culicidae) and Fish Toxicity of Temephos in Laboratory and Septic Tank Conditions

Chae

Kwon²,

Min³

et al. 2014

J Med Entomol

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Culex pipiens molestus Forskal (Diptera: Culicidae) is the dominant mosquito species in septic tanks in South Korea. An assessment was made of the biological control potential of mud loaches, Misgurnus mizolepis Günther (Cypriniformes: Cobitidae), toward Cx. p. molestus larvae in laboratory and septic tanks. Results were compared with those of temephos 20% emulsifiable concentrate. In laboratory tests, all mud loaches survived on sedimentation chamber- and effluent chamber-collected water of aerobic septic tanks (ASTs), whereas all mud loaches died within 3-12 h after introduction into sedimentation chamber- and effluent chamber-collected water of anaerobic septic tanks, Gill hyperplasia and hemorrhages at the bases of pectoral fins were detected in all dead mud loaches. These appeared to have been caused by bacterial disease, rather than the physical and chemical characteristics of the septic tank water. A mud loach consumed an average range of 1,072-1,058 larvae of Cx. p. molestus in the AST water at 24 h. At the manufacturer's recommended rate (10 ml/ton) in the AST water, the temephos formulation did not cause fish mortality. In the AST experiment, predation of mosquito larvae by mud loaches at a release rate of one fish per 900 mosquito larvae resulted in complete mosquito control from the third day after treatment throughout the 18-wk survey period, compared with temephos 20% emulsifiable concentrate-treated AST water (reduction rate, 40% at 28 days after treatment). Reasonable mosquito control in aerobic septic tanks can be achieved by mosquito breeding season stocking of a rate of one mud loach per 900 mosquito larvae.

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Section: Discussionmentioning

confidence: 98%