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Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (4): 549-552.

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Spatial and temporal niches of Aphis gossypii and its predatory enemies

MIAO Yong1, ZOU Yunding1, SUN Shanjiao2, YE Chengrui2, LI Taochun2, YE Shilu2, XING Jianguo2   

  1. Anhui Agricultural University, Hefei 230036, China
  • Received:2002-05-04 Revised:2002-09-10 Online:2003-04-15

Abstract: The research results showed that Aphis gossypii had a narrow temporal niche breadth and a wide spatial niche breadth. This implied that the occurrence of A. gossypii population had the characteristics of obvious peak-period and whole-plant damage. The temporal-dynamic spatial niche breadthes of A. gossypii had no relativity to its own population densities. This implied that the damage of A. gossypii was complicated. Among the predatory enemies, Erigonidium graminicola and Propylaea japonica had wider temporal and spatial niche breadthes than other predatory enemies, and it meant that the above two enemies had longer period of occurrence and wider range of distribution. The temporal譻patial niche overlap of the predatory enemies with A. gossypiiwas in order of Theridium octomaculatum>P.japonica>E.graminicola>total of other enemies>Geocoris ochropterus>Misumenops tricuspidatus>Orius minutes, and the order was consistent with that of relational grades of A. gossypiiand its predatory enemy populations. This result showed that the sympatry and synchronism of predatory enemies with A. gossypiihad close relation to the predatory effect of the natural enemies.

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