Universität zu Köln

Cui, Rongfeng, Tyers, Alexandra M., Malubhoy, Zahabiya Juzar, Wisotsky, Sadie, Valdesalici, Stefano, Henriette, Elvina, Kosakovsky Pond, Sergei L. and Valenzano, Dario Riccardo ORCID: 0000-0002-8761-8289 (2021). Ancestral transoceanic colonization and recent population reduction in a nonannual killifish from the Seychelles archipelago. Mol. Ecol., 30 (14). S. 3610 - 3624. HOBOKEN: WILEY. ISSN 1365-294X

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Abstract

Whether freshwater fish colonize remote islands following tectonic or transoceanic dispersal remains an evolutionary puzzle. Integrating dating of known tectonic events with phylogenomics and current species distribution, we find that killifish species distribution is not explained by species dispersal by tectonic drift only. Investigating the colonization of a nonannual killifish (golden panchax, Pachypanchax playfairii) on the Seychelle islands, we found genetic support for transoceanic dispersal and experimentally discovered an adaptation to complete tolerance to seawater. At the macroevolutionary scale, despite their long-lasting isolation, nonannual golden panchax show stronger genome-wide purifying selection than annual killifishes from continental Africa. However, progressive decline in effective population size over a more recent timescale has probably led to the segregation of slightly deleterious mutations across golden panchax populations, which represents a potential threat for species preservation in the long term.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Cui, Rongfeng UNSPECIFIED UNSPECIFIED UNSPECIFIED Tyers, Alexandra M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Malubhoy, Zahabiya Juzar UNSPECIFIED UNSPECIFIED UNSPECIFIED Wisotsky, Sadie UNSPECIFIED UNSPECIFIED UNSPECIFIED Valdesalici, Stefano UNSPECIFIED UNSPECIFIED UNSPECIFIED Henriette, Elvina UNSPECIFIED UNSPECIFIED UNSPECIFIED Kosakovsky Pond, Sergei L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Valenzano, Dario Riccardo UNSPECIFIED orcid.org/0000-0002-8761-8289 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-587720
DOI:	10.1111/mec.15982
Journal or Publication Title:	Mol. Ecol.
Volume:	30
Number:	14
Page Range:	S. 3610 - 3624
Date:	2021
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1365-294X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GONDWANA LIFE RAFTS; MITOCHONDRIAL-DNA; PROVIDES INSIGHTS; GENOME; FISHES; EVOLUTION; PHYLOGENY; DISPERSAL; TORTOISES; HISTORY Multiple languages Biochemistry & Molecular Biology; Ecology; Evolutionary Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58772