蛞蝓（阿勇蛞蝓科）和（蛞蝓科）的完整线粒体基因组为柄眼目（软体动物，腹足纲）的系统发育提供了见解。

Complete mitochondrial genomes of the slugs (Agriolimacidae) and (Limacidae) provide insights into the phylogeny of Stylommatophora (Mollusca, Gastropoda).

作者信息

Zhao Te, Song Nan, Lin Xingyu, Zhang Yang

机构信息

College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China Henan Agricultural University Zhengzhou China.

出版信息

Zookeys. 2023 Jul 31;1173:43-59. doi: 10.3897/zookeys.1173.102786. eCollection 2023.

In this study, we sequenced two complete mitogenomes from and . The mitogenome of represented the first such data from the family Limacidae. The lengths of the mitogenomes of and were 14,773 bp and 15,195 bp, respectively. The entire set of 37 mitochondrial genes were identified for both mitogenomes. Compared with the mitogenome of , the _ tRNA cluster was rearranged in both and . The secondary structures of tRNA and rRNA genes for the two species were predicted. Phylogenetic analyses based on amino acid sequences supported (1) monophyly of Stylommatophora, (2) division of Stylommatophora into the 'achatinoid' clade (i.e., the suborder Achatinina) and the 'non-achatinoid' clade (i.e., the suborder Helicina), (3) placement of the Orthurethra in the 'non-achatinoid' clade, and (4) monophyly of each of the superfamilies Helicoidea, Urocoptoidea, Succineoidea, Arionoidea, Pupilloidea and Limacoidea. The exemplars of Helicidae, Philomycidae and Achatinellidae displayed many more mitochondrial gene rearrangements than other species of Stylommatophora.

在本研究中，我们对来自[具体物种1]和[具体物种2]的两个完整线粒体基因组进行了测序。[具体物种1]的线粒体基因组代表了蛞蝓科的首个此类数据。[具体物种1]和[具体物种2]的线粒体基因组长度分别为14,773 bp和15,195 bp。两个线粒体基因组均鉴定出了全套37个线粒体基因。与[对比物种]的线粒体基因组相比，[具体物种1]和[具体物种2]中的_tRNA簇均发生了重排。预测了这两个物种的tRNA和rRNA基因的二级结构。基于氨基酸序列的系统发育分析支持：(1)柄眼目的单系性；(2)柄眼目分为“玛瑙螺类”分支（即玛瑙螺亚目）和“非玛瑙螺类”分支（即柄眼亚目）；(3)直尿道亚目置于“非玛瑙螺类”分支中；(4)旋螺超科、美洲大蜗牛超科、琥珀螺超科、阿勇蛞蝓超科、瞳孔蜗牛超科和蛞蝓超科各自的单系性。与柄眼目的其他物种相比，螺旋科、嗜黏液蛞蝓科和玛瑙螺科的代表物种表现出更多的线粒体基因重排。