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Title Drying fish preference assessment and efficacy of semiochemicals as repellents to blow fly Chrysomya megacephala (F.) (Diptera: Calliphoridae) during sun drying of fish
 
Names Bhaskaran, T.V.
Nithin, C.T.
Bindu, J.
Gopal, T.K.S.
Kumar, K.A.
Ravishankar, C.N.
Date Issued 2018 (iso8601)
Abstract Chrysomya megacephala (F.) is a major pest of fish after harvest and during the
processing stage. Existing management strategies are inadequate in curbing the fly menace especially
in processing sites with poor hygenic conditions. The present study attempted to evaluate the
preference of the C'.megacephala in drying fish stages and also evaluated the efficacy of synthetic
compounds of some fish based semiochemicals which are identified as repellents. The results of the
study indicate that salt cured fish after one- day drying is the most preferred choice for the flies. All
synthetic repellents attempted to control the flies, were found to be effective as repellents and had
given about 50% suppression of the population compared to control. Urethane (Ethyl carbamate) had
shown the maximum repellency (67%) followed by Hexanal (52.6%) and Diphenyl ether (52%). Dimethyl
benzothiophene and N, N-dimethyl acetamide also exhibited 43.3 % to 48.2% repellency in alleviating
the flies. Results of the preference study provide information to processors about right time to take
adequate precaution while sun drying of fish. The study also revealed the possibility of utilising
tested synthetic analogues in population suppression of blowflies with an effective dose optimisation
before application. f) 2018 Association for Advancement of Entomology
Genre Article
Identifier Entomon 43(3): 157-164