Ecology and Evolution, Год журнала: 2025, Номер 15(5)

Опубликована: Май 1, 2025

ABSTRACT Cichlids that have undergone adaptive radiation are genetically close but exhibit extreme ecological and morphological diversity, making them useful for understanding speciation mechanisms. Vomeronasal type 1 receptors (V1R) highly conserved among teleost fish at the amino acid sequence level believed to play a fundamental role in reproduction. We previously reported surprisingly high diversity of V1Rs certain cichlid species, suggesting possible their speciation. In this study, we investigated process evolutionary diversification all 6 (V1R1–6) by using genome data 528 encompassing nearly lineages. case V1R2, two divergent alleles (1.17%: variant sites/coding [CDS] length) without recombination were preserved shared cichlids found East African Great Lakes. V1R6, numerous variable could be derived from multiple events between (1.39%: sites/CDS Lake Victoria cichlids. Additionally, identified V1R1 within tribe Tropheini, both V1R3 V1R6 Trematocarini Ectodini. However, despite extensive investigations, not identify source lineages these introgressions, implying they may become extinct. This study revealed potential introgression explaining remarkable

Язык: Английский