In the rivers: Multiple adaptive radiations of cyprinid fishes (Labeobarbus) in Ethiopian Highlands
| Autor: | M. A. Levina, Boris A. Levin, A. S. Golubtsov, Evgeniy Simonov, Yury Y. Dgebuadze |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Evolution Lineage (evolution) media_common.quotation_subject Fauna Cyprinidae Zoology lcsh:Medicine Biology 010603 evolutionary biology 01 natural sciences Labeobarbus Competition (biology) Article 03 medical and health sciences Monophyly Rivers Adaptive radiation Genetics Animals lcsh:Science media_common Multidisciplinary lcsh:R biology.organism_classification Adaptation Physiological Biological Evolution 030104 developmental biology Habitat lcsh:Q Ethiopia Parallel evolution |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020) |
| ISSN: | 2045-2322 |
| Popis: | Multiple repeated patterns of adaptive radiation were revealed in cyprinid fish inhabiting the compact geographic region of the Ethiopian Highlands. We found four independently evolved radiations in the evolutionary hexaploid (2n = 150) Labeobarbus lineage based on matrilineal relationships of >800 individuals. Each radiation displayed similar patterns of mouth phenotype diversification, and included ecomorphs/species of the generalized, lipped, scraping (one or two), and large-mouthed (one to three) types. All radiations were detected in geographically isolated rivers, and originated from different ancestral populations. This is the first documented case in which numerous parallel radiations of fishes occurred–via different ways–in a riverine environment. Some radiations are very recent and monophyletic, while others are older and include ecomorphs that originated in separate mini flocks and later combined into one. The diversification bursts among Ethiopian Labeobarbus were detected in the mid-upper reaches of rivers (1050-1550 m above sea level), which likely offer ecological opportunities that include diverse habitats yet poor fauna (i.e. lower competition and relaxed selection). This promising example of parallel evolution of adaptive radiation warrants further investigation. |
| Databáze: | OpenAIRE |
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