Genetic Determination of a Cryptic Species in the Genus With Whole-Genome Molecular Resolution

Overview

Journal Ecol Evol

Date 2024 Dec 12

PMID 39664716

Authors

Jia-Wei Xu

Jie Wang

Yun-Wei Dong

Affiliations

Soon will be listed here.

Abstract

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.

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