Evaluating efficiency of seven trap types used in survey of insect pests and their natural enemies inhabiting rice fields [electronic resource].

Includes reference.

The survey which was carried out at the experimental farm of Rice Research & Training Center and Economic Entomology Dept., Kafr El-Sheikh Fac. of Agric., Tanta University during two successive seasons; 2003 and 2004. Revealed the presence of 138 insect species in rice fields. In the current study, the vacuum machine captured the greates number of insect species (84) followed by the malaise trap 74. Then S3, 52, 43, 36 and 33 species were collected by sweeping net, photoelector, pit-fall trap, light trap and fine screen trap, respectively. Arranging (S.W.) values in a descending order revealed that the highest indexes were recorded for photo elector (3.67) and vacuum machine (3.66) followed by malaise trap (3.62), light trap (3.l5A while index calculated for sweep net was the lowest (2.98). Data demonstrating the efficiency of the traps in collecting different orders of insects revealed that, sweeping net was most efficient in collecting Coleoptera followed by Hymenoptera. Photoelector was most efficient for collecting Hymenoptera, and Homoptera. Pit-fall trap in collecting Hymenoptera followed by . both Orthoptera and Coleoptera. Vacuum machine, Hymenoptera followed by Coleoptera. Malaise trap, Hymenoptera followed by Coleoptera. Light trap, Coleoptera, followed by Lepidoptera. Fine screen trap, was especially efficient for collecting aquatic insects; Coleoptera, followed by Hemiptera. However insect living in soil or water and other which might be active at night would be also collected in the vacuum machine trap. Those insects were also collected by pit-fall trap, fine screen trap and light trap. In addition. fine insects which might be damaged by power of suction of the vacuum machine become not valid for mounting and taxonomic studies. Those insects could be collected safty maJaisa trap or photo elector trap.

Summary in Arabic.

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