Unravelling the evolution of Africa's drainage basins through a widespread freshwater fish, the African sharptooth catfish Clarias gariepinus. (19th April 2020)
- Record Type:
- Journal Article
- Title:
- Unravelling the evolution of Africa's drainage basins through a widespread freshwater fish, the African sharptooth catfish Clarias gariepinus. (19th April 2020)
- Main Title:
- Unravelling the evolution of Africa's drainage basins through a widespread freshwater fish, the African sharptooth catfish Clarias gariepinus
- Authors:
- Van Steenberge, Maarten W.
Vanhove, Maarten P. M.
Chocha Manda, Auguste
Larmuseau, Maarten H. D.
Swart, Belinda L.
Khang'Mate, Faustin
Arndt, Allan
Hellemans, Bart
Van Houdt, Jeroen
Micha, Jean‐Claude
Koblmüller, Stephan
Roodt‐Wilding, Rouvay
Volckaert, Filip A. M. - Abstract:
- Abstract: 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 cyt b 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. MainAbstract: 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 cyt b 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. … (more)
- Is Part Of:
- Journal of biogeography. Volume 47:Number 8(2020:Aug.)
- Journal:
- Journal of biogeography
- Issue:
- Volume 47:Number 8(2020:Aug.)
- Issue Display:
- Volume 47, Issue 8 (2020)
- Year:
- 2020
- Volume:
- 47
- Issue:
- 8
- Issue Sort Value:
- 2020-0047-0008-0000
- Page Start:
- 1739
- Page End:
- 1754
- Publication Date:
- 2020-04-19
- Subjects:
- Africa -- Clariidae -- fish -- ichthyofaunal provinces -- phylogeography -- river basin
Biogeography -- Periodicals
578.09 - Journal URLs:
- http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2699 ↗
http://onlinelibrary.wiley.com/ ↗ - DOI:
- 10.1111/jbi.13858 ↗
- Languages:
- English
- ISSNs:
- 0305-0270
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4952.900000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 13879.xml