Studies On Biological Chatacters And Artificial Diets Of Glenea Cantor

The study on the biological character and artificial diets of Glenea cantor was carry out in 2006. The main results were summarized as follows:1. The main biological characters of G. cantor were observed and the morphological features at different stages of the G. cantor were described.2. The behaviors of the adults on different plants were analyzed. The results shown that adults preferred Gossampinus malbarica and Ceiba specios to Excentrodendron hsienmu, Melia azedaeach, Osmanthus fragrans for feeding. The adults did not feed on Mangifera indica, Mangifera sylvatica, Litchi chinensis, Dimocarpus longan, Aesculus chinensis, Castanea mollissima, Dracontomelon duperreanum, Bauhinia purpurea, Michelia alba, Nerium indicum, Clausena lansium, Prunus persica, Lagerstroemia speciosa, Cinnamomum burmannii, Ficus benjamina, Eucalyptus exserta, Podocarpus nagi, Eriobotrya japonica, Delonix regia, Syzygium cumini, Cieidiocarpon cavaleriei, Broussonetia papyrifera, Acacia confuse, Citrus grandis, Adenanthera pavonia, Vernicia fordii, Salix babylonica, Aleurites moluccana, Sapindus mukorossi, Artocarpus heterophyllus, Araucaria cunninghamia.3. Ceiba speciosa, Excentrodendron hsienmu, Melia azedaeach, Aesculus chinensis, Castanea mollissima and Vernicia fordii, had been reported as the hosts of G. cantor. The rearing experiments results shown that the larvae could not developed to adults on above hosts except for C. speciosa and E. hsienmu. Larvae fed on E. hsienmu could develop to adults, but the emerged rate was only 2.1%, and all die in 5 days after emerged from wood. Larvae reared by C. speciosa could emerge from wood normally, the sex ratio and body weight did not show any different from rearing by G. malbarica, this suggested that G. malbarica and C. speciosa are really the hosts of G. cantor.4. The experiment of fed preference of adults on different parts of G. malbarica in G. cantor shown that the feeding amount of adults was significantly different among the pith, phloem, leaf(except nervation), leafstalk, bud, nervation and xylem, adults preferred to feed on pith which account for 34%, following was phloem, account for 27%, xylem was not fed.5. The results of larvae reared by different type and weight of G. malbarica branch shown that the treatment vivacious branch 80g had the best breeding effect in which the body weight of adults emerged from wood was normal. The duration from larva to adult emerged from wood was increased with the weight of branch decreased. This result was very important to the study on artificial diets of G. cantor.6. Preliminary study on the artificial diets of G. cantor shown that the larva could be rear to adult by the three types of artificial diets. However, the mean body weight lighter than that reared by G. malbarica branch significantly.7. The experiment ameliorated the artificial diets of G. cantor shown that 0.5 g Sorbic acid in 500 g artificial diets was suffice to prevent the artificial diets from moldy within 30 days, with the content of Methylp-hydroxybenzoate increased, the mean body weight of adult decreased. Among the three treatments of artificial diets designed, the mean body weight of females of treatment 1 and treatment 2 were not significantly different to that reared by G. malbarica. But the mean body weight of male reared by these three artificial diets lighter than reared by G. malbarica significantly.