Spatial Niche Analysis of Eclosion Pores of Arbela bailbarana and Chrenoma atritarsis in Camellia oleifera Forest
The Arbela bailbarana and the Chrenoma atritarsis often bore into and damaged the trunks of Camellia oleiferas,causing them to weaken and die,not only damaging the ecology but also causing economic losses.Exploring the relationship and mechanisms of competitive coexistence between the two pests provides a theoretical basis for controlling trunk-boring pests.The spatial niche of the two pests was studied using the sample plot method.The results indicate that Arbela bailbarana and the Chrenoma atritarsis exhibit selectivity towards the height of Camellia oleifera for their damage,but show no selectivity regarding the orientation of the trunk.Concerning niche breadth,both these two pests displayed small niche breadth values on the trunk,suggesting that their distribution on the Camellia oleifera trunk is limited.Moreover,the niche overlap indices of the two pests were similarly small,suggesting significant differences in their resource demands.The niche differences between these two pests were pronounced,indicating a high level of interspecies competition in their spatial niches.By comparing the distribution of eclosion pores in vertical and horizontal directions,and analyzing the characteristics and differences of their spatial niches,a scientific basis is provided for further pest control strategies.
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