J 2020

Unravelling the evolution of Africa's drainage basins through a widespread freshwater fish, the African sharptooth catfish Clarias gariepinus

VAN STEENBERGE, Maarten Wouter, Maarten Pieterjan VANHOVE, Auguste Chocha MANDA, Maarten H. D. LARMUSEAU, Belinda L. SWART et. al.

Basic information

Original name

Unravelling the evolution of Africa's drainage basins through a widespread freshwater fish, the African sharptooth catfish Clarias gariepinus

Authors

VAN STEENBERGE, Maarten Wouter (56 Belgium, guarantor, belonging to the institution), Maarten Pieterjan VANHOVE (56 Belgium, belonging to the institution), Auguste Chocha MANDA, Maarten H. D. LARMUSEAU, Belinda L. SWART, Faustin KHANG'MATE, Allan ARNDT, Bart HELLEMANS, Jeroen VAN HOUDT, Jean-Claude MICHA, Stephan KOBLMULLER, Rouvay ROODT-WILDING and Filip A. M. VOLCKAERT

Edition

Journal of Biogeography, Hoboken, Wiley, 2020, 0305-0270

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10618 Ecology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 4.324

RIV identification code

RIV/00216224:14310/20:00116891

Organization unit

Faculty of Science

DOI

UT WoS

000526579600001

Keywords in English

Africa; Clariidae; fish; ichthyofaunal provinces; phylogeography; river basin

Tags

Tags

International impact, Reviewed
Změněno: 9/11/2020 18:05, Mgr. Marie Šípková, DiS.

Abstract

V originále

Aim The formation history of Africa's current river basins remains largely unknown. In order to date changes in landscape and climate, we studied the biogeography of the African freshwater fish with the largest natural distribution. We also validated biogeographical units. Location Continental Africa. Taxon Clarias gariepinus sl. Methods We investigated mitochondrial cytb sequences of 443 individuals from 97 localities, using a haplotype network and a genetic landscape analysis. We inferred a dated phylogeny using maximum likelihood and Bayesian inference approaches and reconstructed ancestral areas with S-DEC and S-DIVA models. Microsatellite genotyping complemented the mitochondrial approach in the Congo basin, where the latter revealed complex patterns. Results Limited differentiation is found in northern and south-western Africa, and sharp genetic differentiation in the continent's east and centre. Populations with affinities to neighbouring basins occur at the edges of the Congo province. High diversity exists in the south of the Congo basin. The Zambezi province is partitioned into eastern, central and western sectors. In the east, specimens were related to those from the Congo. In the west, they were similar to Southern representatives. Phylogenetic inference placed the origin of C. gariepinus in the East Coast, with intraspecific diversification starting around the Great Lakes. These events occurred ca. 4.8-1.65 and 2.3-0.8 MYA respectively. Main conclusions Clades of C. gariepinus sl. show a clear geographical signature. The origin of C. gariepinus in the East Coast and diversification around the Great Lakes coincided with the periods of increased aridity. Low genetic differentiation in northern and southern Africa may result from connectivity during recent periods of higher rainfall. In contrast to other widespread African freshwater fish, colonization rather than extinction seemed to mediate distribution patterns. This can be explained by a high ecological tolerance. We highlight the species' suitability to study landscape and climate evolution at various scales.