Evaluation of the efficacy of Neem Seed Oil (NSO) extract for the control of Dermestes maculatus Degeer, 1774 (Coleoptera: Dermestidae) in Clarias gariepinus (Burchell, 1822) (Pisces: Claridae)

[摘要]  The efficacy of Neem Seed Oil (NSO) in controlling dried fish pest against Dermestes maculatus was investigated in the laboratory. Four concentrations of ethanolic extracts of NSO: 0.125, 0.146, 0.180 mls were rubbed on the body surface of dried Clarias gariepinus. The results showed that the fish were protected for 6 months against D. maculatus. The efficacy of treatments was however, dosage dependent. The LD50 was 0.125 while 0.275ml significantly halted hatchability and development. A 100% adult mortality rate was recorded at high doses within the first 10 days. NSO was therefore recommended at appropriate dosage for the prevention of insect infestation of dried fish

[学科分类] 昆虫学

[关键词] Smoked fish;Neemseed oil;control;Dermestes maculatus