Abstract:

The niches of mites and their predatory mites in Phyllostachys heterocycia forest in Xiqin, Nanping, Fujian Province were studied.The results showed that the sequence of utilization degree of the mites on the bamboo's leaves and their natural enemy(predatory mites)to temporal-spatial resource was as follows: predetory mites(B_i=0.5550)> Oligonychus urama (B_i=0.4467)> Schizotetranychus nanjingensis (B_i=0.3097)> Aponychus corpuzae (B_i =0.2875> S. celarius (B_i =0.1674)> Bryobia sp.(B_i=0.1417); the following effects of predatory mites with S.nanjingensis, O.urama, A.corpuzae were strong in temporal-spatial resource (the values of C_ij were 0.5743, 0.4830, 0.4371 respectively.); in the mites, the competiton between S.nanjingensis and A.corpuzae was acutest (C_ij =0.6076) and between O.urama and the others was very fierce too; the egg and adult of O.urarna occupied more temporal-spatial resouce in the different stages of the mites; the competitions were acute in species and between the egg, the larva and the nymph of S.nanjingensis and A.copuzae, the larva and the nymph of A.corpuzae and the egg of S.nanjingensis, the adult of O.urama and the larva and the nymph of A.corpuzae(C_ij >0.4); the following effects of predatory mites on the larva, the nymph and the adult of S.naningensis. The adult of O.urama and the larva and the nymph of A.corpuzae were stonger than the other stages (C_ij >0.5) and the sequence of others were the egg of O.urama, the egg of S.nanjingensis, the adult of A.corpuzae, the larva and the nymph of O.urama and the egg of A.corpuzae.

Key words: Aponychus corpuzae Rimando, Schizotetranychus nanjingensis Ma et Yuan, Oligonychus urama Ehara, Predatory mites, Phyllostachys heterocycia, Niche