摘要
为明确不同寄主树皮内含物与南方锦天牛Acalolepta speciosa危害程度的相关关系,研究针对高州油茶Camellia drupifera、油茶C.oleifera和广宁红花油茶C.semiserrata进行了南方锦天牛取食与树皮内含物相关性的分析。研究发现,3个树种的韧皮部内含物含量普遍高于木质部。南方锦天牛对高州油茶和油茶表现出明显的取食偏好,这种偏好与可溶性糖、还原糖、总酚含量并无显著相关性,而与单宁含量呈极显著正相关关系(P<0.01)。广宁红花油茶由于具有较高的碳氮比及可能的其他生物碱成分,导致南方锦天牛对其取食量较少。此外,苯丙氨酸含量与取食面积呈显著正相关关系(P<0.05),而赖氨酸、精氨酸、组氨酸含量较高的高州油茶和油茶更受南方锦天牛的喜爱。天牛的取食行为受多种因素影响,其具体作用机制还需进一步深入研究。
To clarify the correlation between the bark contents of different hosts and the damage degree of Acalolepta speciosa,the correlation between the feeding of A.speciosa and the bark contents of Camellia drupifera,C.oleifera,and C.semiserrata was analyzed.The results indicated that the content of phloem constituents in the three Camellia species was generally higher than that of xylem.A.speciosa showed a clear preference for C.drupifera and C.oleifera.There was no significant correlation between this preference and soluble sugar,reducing sugar and total phenol content,but there was a significant positive correlation with tannin content(P<0.05).The higher carbon-to-nitrogen ratio and potential alkaloids in C.semiserrata may explain the lower feeding amounts of A.speciosa on this variety.Furthermore,the phenylalanine content was positively associated with the feeding area(P<0.05).C.drupifera and C.oleifera,with higher lysine,arginine,and histidine levels,were preferred by A.speciosa.The feeding behavior of A.speciosa is multifactorial,necessitating further detailed study to elucidate the underlying mechanisms.
作者
吕宇宙
袁海波
高成龙
赵丹阳
LYU Yuzhou;YUAN Haibo;GAO Chenglong;ZHAO Danyang(State-owned Xiaokeng Forest Farm,Qujiang District,Shaoguan City,Shaoguan,Guangdong 512000,China;Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China)
出处
《林业与环境科学》
2024年第6期78-84,共7页
Forestry and Environmental Science
基金
广东省林业科技创新项目(2024KJCX019)
广东省地方标准制(修)订项目(2022-DB-03)。
关键词
南方锦天牛
山茶属
营养物质
取食量
Acalolepta speciosa
Camellia
nutrients
feeding amounts
