Physicochemical properties of leaves from seven Ficus species and its effects on the growth and development of Phauda flammans(Lepidoptera:Phaudidae)
To explore the preference of Phauda flammans to Ficus concinna and F.benjamina in comparison of other five Ficus species.In this study by measuring and comparing the nutrients,secondary metabolites and physical properties of seven commonly used landscaping Ficus trees,the developmental history of P.flammans on F.concinna and F.benjamina was evaluated by the methods of indoor feeding observation,survey statistics and population life table parameters.The results indicated that compared with F.virens,F.carica,F.hispida,F.altissima and F.elastica,the soluble sugar content in leaves of F.concinna and F.benjamina were 98.47 μg/g and 65.21 μg/g respectively.Soluble protein content was 4.18 mg/g and 0.95 mg/g respectively;The water content was 0.84％and 0.95％respectively.The blade thickness was 3.59 mm and 2.65 mm,respectively.The hardness was 3.91 mN and 3.49 mN respectively.P.flammans could complete its life history only on F.concinna and F.benjamina.Compared with F.benjamina,the growth and development duration of larvae,pupae and adults was shorter,which was 50.25 d,11.48 d and 4.28 d respectively,after feeding F.concinna.The population survival rate and reproduction rate were higher,and the natural death exclusion control index was 1.68,which was lower than that of F.benjamina.Our findings showed that P.flammans larvae preferred to F.concinna and F.benjamina and could complete generation development,which could attribute to leaves that contained higher nutrients,lower secondary metabolites,and smaller leaf hardness.Strategy should be deployed in alternative plantation of different Ficus trees in the same landscape according to the preference of P.flammans,thereby minimizing its infestation and improving the ecological benefits of urban vegetation.
万方数据
维普
