The flight capacity of different ages and sexes of the sycamore lace bug, Corythucha ciliata, was studied at different temperatures using a flight mill system. The results of regression analysis showed a significant e...The flight capacity of different ages and sexes of the sycamore lace bug, Corythucha ciliata, was studied at different temperatures using a flight mill system. The results of regression analysis showed a significant effect of temperature on flight distance (P=0.0082). Temperature did not influence flight duration (P=0.212) or flight speed (P=0.175). The mean flight distance (1 024 m) and mean flight duration were the greatest at 25.2°C. The age of C. ciliata had a significant influence on flight distance (P=0.0005), flight duration (P=0.0005) and flight speed (P=0.026). The 12-d-old adult had the greatest flight distance (887 m), duration (3 875 s) and speed (0.22 m s^–1). Flight distances and flight duration of females were significantly longer than that of males. However, the male had significantly greater flight speed than the female. The insect appears to be capable of long distance flights. The understanding of the optimal age and temperature for the flight of this insect through this study provides a foundation for better management of the insect in China.展开更多
Through two years of systematic investigation,it was found that Corythucha ciliata occurred in the main streets of Guangde City and spread rapidly to roads and streets of some villages and towns.The investigation foun...Through two years of systematic investigation,it was found that Corythucha ciliata occurred in the main streets of Guangde City and spread rapidly to roads and streets of some villages and towns.The investigation found that C.ciliata could harm indigenous tree species such as Broussonetia papyrifera,and could also quickly occupy the living space of thrips,the original leaf pest of local Platanus acerifolia.Literature review also suggested that the pest would also be a potential threat to indigenous tree species,such as Rhododendron simsii Planch,Prunus cerasifera Ehrhar,etc.Guangde City,located in the middle and lower reaches of the Yangtze River,was sunny,hot and dry in summer from 2021 to 2022.However,C.ciliata had no obvious diapause habits in summer,with strong adaptability.It was easy to control C.ciliata,but was difficult to eradicate the pest.According to the risk analysis index system of dangerous forest pests,the risk value of C.ciliata was determined as R=1.80,belonging to moderately dangerous pest in Guangde.Through quarantine,publicity,winter and summer management measures,the occurrence of C.ciliata was controlled to a certain extent,and the harm and transmission risk of the pest were reduced.展开更多
There is an increasing likelihood that invasive plants are again exposed to their co-evolved specialist herbivores in the non-native range.However,whether there is a latitudinal pattern associated with the resistance ...There is an increasing likelihood that invasive plants are again exposed to their co-evolved specialist herbivores in the non-native range.However,whether there is a latitudinal pattern associated with the resistance of an invasive plant to its co-evolved herbivores and how soil microbes affect resistance has been little explored.We hypothesized that the resistance of invasive Solidago canadensis to its co-evolved insect herbivore Corythucha marmorata could increase with latitude,and that local rhizosphere microbes could facilitate invasive plants to become resistant to their co-evolved herbivores.We conducted a field survey and a greenhouse experiment to examine whether there was a latitudinal pattern in the abundance of C.marmorata and in the damage it caused to S.canadensis in China.We tested whether local rhizosphere microbes of invasive plants can promote the resistance of S.canadensis to C.marmorata herbivory.In the field survey,both density of C.marmorata and damage level of S.canadensis were positively correlated with latitude,and with S.canadensis plant growth,indicating a latitudinal pattern in the resistance of S.canadensis to C.marmorata.However,in the greenhouse experiment,S.canadensis from different latitudes did not suffer significantly from different levels of damage from C.marmorata.Additionally,the damage level of S.canadensis was lower when rhizosphere soil and rhizomes originated from field S.canadensis with same damage level than with different damage levels.This result indicates that local rhizosphere soil microbes promote the adaptation of S.canadensis to resistance of C.marmorata.展开更多
基金funded by the Fundamental Research Funds of Henan Academy of Forestry, China (162102410033)
文摘The flight capacity of different ages and sexes of the sycamore lace bug, Corythucha ciliata, was studied at different temperatures using a flight mill system. The results of regression analysis showed a significant effect of temperature on flight distance (P=0.0082). Temperature did not influence flight duration (P=0.212) or flight speed (P=0.175). The mean flight distance (1 024 m) and mean flight duration were the greatest at 25.2°C. The age of C. ciliata had a significant influence on flight distance (P=0.0005), flight duration (P=0.0005) and flight speed (P=0.026). The 12-d-old adult had the greatest flight distance (887 m), duration (3 875 s) and speed (0.22 m s^–1). Flight distances and flight duration of females were significantly longer than that of males. However, the male had significantly greater flight speed than the female. The insect appears to be capable of long distance flights. The understanding of the optimal age and temperature for the flight of this insect through this study provides a foundation for better management of the insect in China.
文摘Through two years of systematic investigation,it was found that Corythucha ciliata occurred in the main streets of Guangde City and spread rapidly to roads and streets of some villages and towns.The investigation found that C.ciliata could harm indigenous tree species such as Broussonetia papyrifera,and could also quickly occupy the living space of thrips,the original leaf pest of local Platanus acerifolia.Literature review also suggested that the pest would also be a potential threat to indigenous tree species,such as Rhododendron simsii Planch,Prunus cerasifera Ehrhar,etc.Guangde City,located in the middle and lower reaches of the Yangtze River,was sunny,hot and dry in summer from 2021 to 2022.However,C.ciliata had no obvious diapause habits in summer,with strong adaptability.It was easy to control C.ciliata,but was difficult to eradicate the pest.According to the risk analysis index system of dangerous forest pests,the risk value of C.ciliata was determined as R=1.80,belonging to moderately dangerous pest in Guangde.Through quarantine,publicity,winter and summer management measures,the occurrence of C.ciliata was controlled to a certain extent,and the harm and transmission risk of the pest were reduced.
基金supported by the Ten Thousand Talent Program of Zhejiang Province(2019R52043)the National Key Research and Development Program of China(2016YFC1201100)the National Natural Science Foundation of China(31270461).
文摘There is an increasing likelihood that invasive plants are again exposed to their co-evolved specialist herbivores in the non-native range.However,whether there is a latitudinal pattern associated with the resistance of an invasive plant to its co-evolved herbivores and how soil microbes affect resistance has been little explored.We hypothesized that the resistance of invasive Solidago canadensis to its co-evolved insect herbivore Corythucha marmorata could increase with latitude,and that local rhizosphere microbes could facilitate invasive plants to become resistant to their co-evolved herbivores.We conducted a field survey and a greenhouse experiment to examine whether there was a latitudinal pattern in the abundance of C.marmorata and in the damage it caused to S.canadensis in China.We tested whether local rhizosphere microbes of invasive plants can promote the resistance of S.canadensis to C.marmorata herbivory.In the field survey,both density of C.marmorata and damage level of S.canadensis were positively correlated with latitude,and with S.canadensis plant growth,indicating a latitudinal pattern in the resistance of S.canadensis to C.marmorata.However,in the greenhouse experiment,S.canadensis from different latitudes did not suffer significantly from different levels of damage from C.marmorata.Additionally,the damage level of S.canadensis was lower when rhizosphere soil and rhizomes originated from field S.canadensis with same damage level than with different damage levels.This result indicates that local rhizosphere soil microbes promote the adaptation of S.canadensis to resistance of C.marmorata.
