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Title
Japanese: 
English:Ancient standing genetic variation facilitated the adaptive radiation of Lake Victoria cichlids 
Author
Japanese: 中村遥奈, 相原光人, 二階堂雅人.  
English: Haruna Nakamura, Mitsuto Aibara, Nikaido Masato.  
Language English 
Journal/Book name
Japanese: 
English:Genes & Genetic Systems 
Volume, Number, Page Vol. 98    No. 2    pp. 93-99
Published date Mar. 2023 
Publisher
Japanese: 
English:日本遺伝学会 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Abstract <p>Cichlid fishes are textbook examples of explosive speciation and adaptive radiation, providing a great opportunity to understand how the genomic substrate yields extraordinary species diversity. Recently, we performed comparative genomic analyses of three Lake Victoria cichlids to reveal the genomic substrates underlying their rapid speciation and adaptation. We found that long divergent haplotypes derived from large-scale standing genetic variation, which originated before the adaptive radiation of Lake Victoria cichlids, may have contributed to their rapid diversification. In addition, the present study on genomic data from other East African cichlids suggested the reuse of alleles that may have originated in the ancestral lineages of Lake Tanganyika cichlids during cichlid evolution. Therefore, our results highlight that the primary factor that could drive repeated adaptive radiation across East African cichlids was allelic reuse from standing genetic variation to adapt to their own specific environment. In this report, we summarize the main results and discuss the evolutionary mechanisms of cichlids, based on our latest findings.</p>

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