In addition , the application of cuticular hydrocarbon analysis to the taxonomic differentiation of the pupae and empty exuviae of six necrophagous flies , were investigated 此外，也探讨了表皮碳氢化合物在蝇蛹和空蛹壳种类鉴别中的应用。
2.
Proper and active habitat management work is essential to maximize the ecological values of these freshwater ponds and our reserve staff at mai po have cautiously managed these habitats by controlling the water levels , clearing invasive water plants as well as removing exotic fish in the systems , said samson so , wwf hong kong training officer . exuviae of dragonfly 世界自然基金会培训主任苏毅雄表示：适当的生境管理工作，对于提高淡水池塘的生态价值至为关键，保护区的员工透过控制水位清理外来水生植物和生态系统中的外来鱼类，仔细而谨慎地管理生境，令生境成为不同野生生物的理想居所。
3.
Only the plants were infested by p . xylostella or being infested by p . xylostellam , the volatiles from chinese cabbage were more attractive to females than those from the common cabbage . ( 5 ) the host foraging behaviour of d . semiclausum was studied in the laboratory . the p . xylostella larvae and their feces , silk , regurgitant , exuviae could elicit host foraging behaviour by d . semiclausum females 本文首次研究了寄主植物的挥发物在小菜蛾和半闭弯尾姬蜂寄主选择中的作用，初步明确了小菜峨及半闭弯尾姬蜂对不同寄主植物产卵选择行为差异的化学基础，并对半闭弯尾姬蜂的寄主搜索行为及学习行为进行了首次研究。
