Xu Jia-Wei, Wang Jie, Dong Yun-Wei
The Key Laboratory of Mariculture, Ministry of Education, Fisheries College Ocean University of China Qingdao People's Republic of China.
Function Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology Qingdao People's Republic of China.
Ecol Evol. 2024 Dec 10;14(12):e70715. doi: 10.1002/ece3.70715. eCollection 2024 Dec.
Recognizing cryptic species is crucial for understanding global biodiversity. The intertidal snail is potentially a cryptic species of widely distributed in the Northwest Pacific. However, the evidence from traditional morphology and single genetic markers is inconsistent. Our study combined quantitative morphological and whole-genome molecular data to clarify the phylogenetic relationship of three species (, aff. , and ). Three-dimensional models of shells revealed significant differences in morphology between and . Neutral SNPs indicated that individuals of and were in different clusters. The ratio of interspecific to intraspecific between and (16) was much larger than the lowest ratio (2.31) in six published genera with cryptic species in gastropods. Non-neutral SNPs disclosed divergence in functional genes related to reproduction and protein binding. The morphological and phylogenetic analyses corroborated the transitional status of aff. . These results confirmed that the snails north of the Yangtze River Estuary is a cryptic species of , and allopatric speciation occurs in the complex.
识别隐存物种对于理解全球生物多样性至关重要。潮间带蜗牛可能是广泛分布于西北太平洋的一种隐存物种。然而，来自传统形态学和单一遗传标记的证据并不一致。我们的研究结合了定量形态学和全基因组分子数据，以阐明三种物种（、近缘种和）之间的系统发育关系。贝壳的三维模型显示和在形态上存在显著差异。中性单核苷酸多态性表明和的个体处于不同的聚类中。和之间种间与种内的比率（16）远大于已发表的六个腹足纲有隐存物种的属中最低的比率（2.31）。非中性单核苷酸多态性揭示了与繁殖和蛋白质结合相关的功能基因的差异。形态学和系统发育分析证实了近缘种的过渡状态。这些结果证实长江口以北的蜗牛是一种隐存物种，并且在复合体中发生了异域物种形成。
