Novel complete mitochondrial genomes of eight riverine Lamprologus species (Actinopterygii, Cichlidae) suggest in-situ speciation of the blind cichlid L. lethops in the lower Congo River

Lamprologine cichlids include nearly 100 species from Lake Tanganyika, but only nine are known from the Congo River, including Lamprologus lethops, the only known blind cichlid. Little is known about its natural history. We characterized the complete mitochondrial genomes of L. lethops and seven rel...

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Bibliographic Details
Authors: Jimenez, Sebastian M., Kurata, Naoko P., Stiassny, Melanie L. J., Alter, S. Elizabeth, Chakrabarty, Prosanta, Alda, Fernando
Format: article
Status:Published version
Publication Date:2025
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/398983
Online Access:http://hdl.handle.net/10261/398983
Access Level:Open access
Keyword:Cichlids
Congo river
Introgression
Lamprologines
Mitogenomes
Phylogeny
Description
Summary:Lamprologine cichlids include nearly 100 species from Lake Tanganyika, but only nine are known from the Congo River, including Lamprologus lethops, the only known blind cichlid. Little is known about its natural history. We characterized the complete mitochondrial genomes of L. lethops and seven related riverine species to infer evolutionary relationships. Genomes were similar in size and structure. Riverine Lamprologus formed two non-sister mitochondrial lineages more closely related to Lake Tanganyika lamprologines than to each other, suggesting past introgression or incomplete lineage sorting. Lamprologus lethops was sister to lower Congo River species. Broader taxonomic and genomic sampling is needed.

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