Studies On The Primary Phyto-actors Influencing Interrelationships Between T. Cinnabarinus (Boisduval) And Plants

The present studies focus on the main vegetal factors influencing biological behaviors of Tetrancychus cinnabarinus (Boisduval) within system of the mite and host plants with a view of chemobiology and behavioral biology. The chemical and physical factors to the response of T. cinnabarinus (Boisduval) are studied by means of chemical and ultrastructural analysis with bioassay. The results are summarized as follows.1. The selectivity of T. cinnabarinus (Boisduval) to different host plants: Olfaction plays an important role in the response during the mites looking for host plants.It means that T. cinnabarinus (Boisduval) was attracted by odors from host plants. The six host plants are different in potential of attraction to the mites. The non-favorite host plant was tested had neither attraction nor repulsion to the mites.2. GC-MS analysis of the volatiles of four host plants: After analysis the volatiles from leaves of the four plants, Vigna sinensis, Glycine max, Lycopersicon esculentum and Capsicum annuum, it was preliminarily considered that Phytol, Isophytol, Tricosane, Pentacosane, Heptacosane, Palmitic acid could be main components that were of help to the mites choosing the hosts through the olfactory of T. cinnabarinus (Boisduval).3. The growth, survivorship, reproduction and other biological characteristics of T. cinnabarinus (Boisduval) on the six host plants: In the same breeding conditions, the mites feeding on the three leguminous plants leaves have shorter developmental period, longer life-spans of female adult and oviposition periods than those on the leaves of three nightshade plants.4. The contents of chemical nutrition in leaves of the six host plants: Higher contents of amino acid, total soluble sugar were in the three leguminous plants leaves, which was identical with biological characteristics of the mites above mentioned.5. The life tables of T. cinnabarinus (Boisduval) on the six plants, in expremental conditions, showed that were significant difference in the parameters among the laboratory population of the mites fed on the host plants, especially on favorite and non- favorite ones.6. Learning behavior of T. cinnabarinus (Boisduval): In the process of repeatedly selective test to different plants combinations, learning behavior of the mites was found...