Ancient standing genetic variation facilitated the adaptive radiation of Lake Victoria cichlids.
Genes Genet Syst
; 98(2): 93-99, 2023 Sep 05.
Article
en En
| MEDLINE
| ID: mdl-37495512
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.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Lagos
/
Cíclidos
Límite:
Animals
País/Región como asunto:
Africa
Idioma:
En
Revista:
Genes Genet Syst
Asunto de la revista:
BIOLOGIA MOLECULAR
/
BIOTECNOLOGIA
Año:
2023
Tipo del documento:
Article
Pais de publicación:
Japón