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PRELIMINARILY STUDIES ON THE MULTIDIMENSIONAL NICHES OF TWO SPIDER MITES OF APPLE LEAF
Author(s) -
Qin Yuchuan
Publication year - 1994
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.1994.tb00261.x
Subject(s) - ecological niche , biology , niche , spider mite , spider , mite , ecology , microclimate , botany , habitat
The multidimensional niches of two spider mites Tetranychus viennensis Zacher and Panonychus ulmi (Koch) comprise eleven ecological dimensions (trophic, microclimatic. and biologic dimensions). Principal component analysis shows: some dimensions of leaf nutrition and microclimate perform more important function than the biologic dimensions in the mites' niches from June to August. By the analysis of main axis technique and the method of comparative ecology the niche ellipsoids (i.e. multidimensional niches) of each mite were established. The niche ellipsoids of the two mites change their volumes with time, tend to seperate in June. overlap in July. and seperate in August.