[Objective]The paper was to study the spatial distribution of Batocera horsfieldi in different ash forests.[Method]The number of excretory holes,eclosion holes and channels of B.horsfieldi in five different stand type...[Objective]The paper was to study the spatial distribution of Batocera horsfieldi in different ash forests.[Method]The number of excretory holes,eclosion holes and channels of B.horsfieldi in five different stand types of ash forests(patch forest,yard greening forest,highway street forest,urban street forest and yard street forest)was investigated,and their spatial distribution characteristics were statistically analyzed.[Result]The aggregation index,Iwao regression equation and Taylor power exponential equation were calculated.The excretory holes,eclosion holes and channels of B.horsfieldi attacking five different stand types of ash forests showed aggregated distribution,but the aggregation index parameters,αandβof Iwao regression equation,lga and b of Taylor power exponential equation varied with different stand types.[Conclusion]B.horsfieldi has caused serious harms to ash tree which is an important landscaping tree in the Yellow River delta area,and it is of guiding value to sampling investigation and prevention and control of B.horsfieldi.展开更多
Batocera horsfieldi,a forestry pest,was an important stem-borer in China.The Pest Risk Analysis(PRA) of B.horsfieldi was evaluated in order to providing more information to prevent the further spreading and intergrete...Batocera horsfieldi,a forestry pest,was an important stem-borer in China.The Pest Risk Analysis(PRA) of B.horsfieldi was evaluated in order to providing more information to prevent the further spreading and intergreted control of this pest.According to the methods of international PRA,the risk level of B.horsfieldi was estimated by qualitative and quantitative analysis,and its control countermeasure was given.The results of qualitative analysis showed that B.horsfieldi had lots of hosts,and its wide distribution,high adaptability and the difficulty of eradication made the pest damages forestry production seriously.According to the quantitative analysis,the PRA value of the pest was 2.04,showing that it was one of the high perilous forestry pests in China.Quarantine and various control measures must be strengthened to prevent the spreading and damage of B.horsfieldi.Suggestions were given that B.horsfieldi would be controlled sustainably by releasing Dastarcus helophoroides,a natural enemy of B.horsfieldi,in damaged forests.展开更多
The responses of Batocera horsfieldi adults to plant volatiles were tested with Y-tube olfactometer. The results showed that the volatiles from the rose had a higher attractive ability to both of unmated and mated mal...The responses of Batocera horsfieldi adults to plant volatiles were tested with Y-tube olfactometer. The results showed that the volatiles from the rose had a higher attractive ability to both of unmated and mated male and female adults of Batocera horsfieldi compared with ambient air, and had a higher attractive ability to the unmated and mated female adults compared with poplar(P<0.05), while the volatiles had insignificant effect on the unmated and mated males(P>0.05). There were insignificant differences in the responses of unmated and mated males and mated females to the volatiles between the rose and poplar,and in the responses of the unmated %Batocera horsfieldi% to the volatiles between the poplar and osier(P>0.05).展开更多
基金Supported by National Natural Science Foundation of China(31770689)。
文摘[Objective]The paper was to study the spatial distribution of Batocera horsfieldi in different ash forests.[Method]The number of excretory holes,eclosion holes and channels of B.horsfieldi in five different stand types of ash forests(patch forest,yard greening forest,highway street forest,urban street forest and yard street forest)was investigated,and their spatial distribution characteristics were statistically analyzed.[Result]The aggregation index,Iwao regression equation and Taylor power exponential equation were calculated.The excretory holes,eclosion holes and channels of B.horsfieldi attacking five different stand types of ash forests showed aggregated distribution,but the aggregation index parameters,αandβof Iwao regression equation,lga and b of Taylor power exponential equation varied with different stand types.[Conclusion]B.horsfieldi has caused serious harms to ash tree which is an important landscaping tree in the Yellow River delta area,and it is of guiding value to sampling investigation and prevention and control of B.horsfieldi.
文摘Batocera horsfieldi,a forestry pest,was an important stem-borer in China.The Pest Risk Analysis(PRA) of B.horsfieldi was evaluated in order to providing more information to prevent the further spreading and intergreted control of this pest.According to the methods of international PRA,the risk level of B.horsfieldi was estimated by qualitative and quantitative analysis,and its control countermeasure was given.The results of qualitative analysis showed that B.horsfieldi had lots of hosts,and its wide distribution,high adaptability and the difficulty of eradication made the pest damages forestry production seriously.According to the quantitative analysis,the PRA value of the pest was 2.04,showing that it was one of the high perilous forestry pests in China.Quarantine and various control measures must be strengthened to prevent the spreading and damage of B.horsfieldi.Suggestions were given that B.horsfieldi would be controlled sustainably by releasing Dastarcus helophoroides,a natural enemy of B.horsfieldi,in damaged forests.
文摘The responses of Batocera horsfieldi adults to plant volatiles were tested with Y-tube olfactometer. The results showed that the volatiles from the rose had a higher attractive ability to both of unmated and mated male and female adults of Batocera horsfieldi compared with ambient air, and had a higher attractive ability to the unmated and mated female adults compared with poplar(P<0.05), while the volatiles had insignificant effect on the unmated and mated males(P>0.05). There were insignificant differences in the responses of unmated and mated males and mated females to the volatiles between the rose and poplar,and in the responses of the unmated %Batocera horsfieldi% to the volatiles between the poplar and osier(P>0.05).
