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Pakistan Journal of Biological Sciences

Year: 2002 | Volume: 5 | Issue: 11 | Page No.: 1255-1258
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Authors

A.B. Idris

Z. Hasmawati

Keywords

Research Article

Ecological Study of Braconid Wasps in Different Logged over Forests with Special Emphasis on the Microgastrines (Hymenoptera:Braconidae)

A.B. Idris and Z. Hasmawati
An ecological study of braconid wasps with special emphasis on the subfamily microgastrinae was conducted in three different logged and fragmented forests (HSUKM, HSKLU and HSKLS). Sampling was done for one week per month starting from July to November 2001 using nine Malaise traps per forest. A total of 953 braconidae individuals comprising 19 subfamilies and 91 species (morphospecies) were collected. Of this, 195 individuals were collected at HSUKM, 414 individuals at HSKLU and 344 individuals at HSKLS. The microgastrinae, gnampthodontinae and rogadinae individuals were the most abundant in all forests having 427, 133 and 98 individuals respectively. Of the eight Microgastrinae species recorded, Sp4 was the most abundant in all forests but did not clearly indicate its preference to either older or younger regeneration forests. However, its presence seemed to be related to the forest size. Although HSUKM had the lowest microgastrines individuals, it had the highest diversity of microgastrines species compared with other forests. Results also showed that using value of H`(Shannon diversity index) this group of parasitoid has potential to be used as a biological indicator of environmental health or habitat disturbance status. Species similarity between the forests is somewhat higher (> 70%) but results suggested that the closer the forests the higher would be percent of species overlapped (shared). There were two different microgastrines community assemblages between the forests observed. The possible effect of size and distances between the logged over forests on the parasitoid abundance, diversity and species similarity are discussed.
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