Biodiversity Science ›› 2003, Vol. 11 ›› Issue (3): 188-196.doi: 10.17520/biods.2003025

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Community structure and species diversity of fig wasps from Ficus altissima

GU Hai-Yan, YANG Da-Rong   

  1. Xishuangbanna Tropical Botanical Garden,Chinese Academy of Science,Kunming 650223
  • Received:2002-12-06 Revised:2003-03-27 Online:2003-05-20
  • GU Hai-Yan

We collected fruits from five individual trees of Ficus altissima in both rainy and dry seasons in Xishuangbanna,Yunnan. We then identified the fig wasps collected from each of the fruits. Of more than 18 000 wasp samples, 14 species were identified, belonging to nine genera of five families. Among them, one species was a pollinator and 13 species were non-pollinators. The wasp community composition and structure differed greatly in rainy and dry seasons. In rainy season, the fruits supported more wasp species than in dry season. There are more wasp species in less disturbed areas than in seriously disturbed ones. The results also indicated that major non pollinators were gall makers, and only a small proportion of them were parasitoids and inquilines. The species diversity index of the wasp community was low all the year round, nevertheless the number of wasp species was higher in the rainy season than in the dry season. The results also showed that the similarity of fig wasp communities between two individual trees was moderate in the same season and very low in different seasons. The sex ratio (male/female) of the pollinator species was low (0.14:1), but the sex ratios of non-pollinators were about 1:1. The results revealed that the seasonal change in weather and habitat fragmentation can affect community structure of the fig wasp in Xishuangbanna, which might have important implications for environmental conservation and restoration in Xishuangbanna.

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