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本研究测定并分析了瓢蜡蝉科（Issidae）脊额瓢蜡蝉属（Gergithoides）代表物种——弯月脊额瓢蜡蝉（Gergithoides gibbosus CHOU&WANG, 2003）的线粒体基因组全序列。研究结果表明，该线粒体基因组全长为16 157 bp，包含37个典型线粒体基因及一个控制区。基因组核苷酸组成呈现显著的A+T偏向性（77.94%），且表现为正AT-skew(0.212 7)和负GC-skew(-0.229 7)。基因排列顺序与昆虫祖先排列模式一致，未发现基因重排现象。基于13个蛋白编码基因（PCGs）构建的最大似然树（ML）和贝叶斯树（BI）拓扑结构一致，均强烈支持弯月脊额瓢蜡蝉归属于球瓢蜡蝉族（Hemisphaeriini），并与圆瓢蜡蝉属（Gergithus）及真球瓢蜡蝉属（Euhemisphaerius）聚为一支。本研究为解析瓢蜡蝉科族级系统发育关系及蜡蝉总科的分子进化机制提供了新的数据支撑。
Abstract：The complete mitochondrial genome of Gergithoides gibbosus Chou & Wang, 2003(Hemiptera:Issidae) was sequenced and characterized. The circular genome is 16,157 bp in length, containing 37 typical mitochondrial genes and one control region. The nucleotide composition shows a significant A+T bias(77.94%),with a positive AT-skew(0.212 7) and a negative GC-skew(-0.229 7). The gene order is identical to the ancestral insect mitochondrial arrangement, with no rearrangement detected. Phylogenetic analyses based on 13 protein-coding genes(PCGs) using both Maximum Likelihood(ML) and Bayesian Inference(BI) methods yielded identical topologies. The results strongly supported the placement of G. gibbosus within the tribe Hemisphaeriini, forming a monophyletic clade with the genera Gergithus and Euhemisphaerius. This study provides novel genomic data for clarifying the tribal phylogenetic relationships within Issidae, and advances our understanding of the molecular evolution in Fulgoroidea.
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基本信息:
中图分类号:Q969.35
引用信息:
[1]张争光,曾译萱,黄族豪.弯月脊额瓢蜡蝉（半翅目：瓢蜡蝉科）线粒体基因组特征及其系统发育研究[J].井冈山大学学报(自然科学版),2026,47(05):40-47.
基金信息:
国家自然科学基金项目（31460157,31960219）; 江西省自然科学基金面上项目（20252BAC240652）
2026-09-10
2026-09-10