Diversity of ichneumonid wasps in the logged over forests of langat basin in Selangor, Malaysia
2003
Idris, A.B. | Hainidah, J. (Kebangsaan Univ., Selangor (Malaysia). Center for Insect Systematic)
The present study was carried out to observe the differential effect of logged over forests of the Langat Basin in Selangor, Malaysia on diversity of Ichneumonid wasps. A total of 732 ichneumonid individuals comprising 16 subfamilies (45.7% of the world recorded ichneumonid subfamily) and 136 morphospecies were successfully collected. Of this 10 subfamilies were recorded in HSUKM while HSKLU and HSKLS had 12 and 14 subfamilies respectively. However, the HSUKM had the less number of ichneumonid species (73) as compared to HSKLU (84) and HSKLS (78). There were nine subfamilies recorded in all forest with the Cryptinae members was the most abundance representing 62.4% of the ichneumonid individuals collected. There was a significantly different (P less than 0.05) in the mean number of ichneumonid individuals collected among forests with the HSUKM had HSKLS had the highest and lowest respectively. This result showed that the small, fragmented and isolated HSUKM capable of acting as refuge for the certain ichneumonid species. Ichneumonid diversity was significantly higher at HSKLS and HSKLU than at HSUKM. The Jaccardþs Coefficient Index (percent species similarity) among forests was 36.1, 36.5 and 38.5% between HSKLU and HSKLS, HSKLU and HSUKM, HSUKM and HSKLS respectively. Based on Jaccardþs Coefficient Index there seemed to be two community assemblages exist between these three forests. First is between HSKLS and HSUKM and another one is between HSKLU and HSKLS and HSUKM. In general, distances from forestþs edge into the forest seemed to have no influence on abundant and species composition, diversity and similarity of ichneumonid.
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