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@article{1375579,
author = {Koblmüller, Stephan and Nevado, Bruno and Makasa, Lawrence and Van Steenberge, Maarten and Vanhove, Maarten Pieterjan and Verheyen, Erik and Sturmbauer, Christian and Sefc, Kristina},
article_location = {DORDRECHT},
article_number = {1},
doi = {http://dx.doi.org/10.1007/s10750-016-2896-2},
keywords = {Cichlidae; Mitochondrial replacement; Phylogeography; Lake level fluctuations; Lamprologini; Hybridization},
language = {eng},
issn = {0018-8158},
journal = {Hydrobiologia},
title = {Phylogeny and phylogeography of Altolamprologus: ancient introgression and recent divergence in a rock-dwelling Lake Tanganyika cichlid genus},
volume = {791},
year = {2017}
}
TY - JOUR
ID - 1375579
AU - Koblmüller, Stephan - Nevado, Bruno - Makasa, Lawrence - Van Steenberge, Maarten - Vanhove, Maarten Pieterjan - Verheyen, Erik - Sturmbauer, Christian - Sefc, Kristina
PY - 2017
TI - Phylogeny and phylogeography of Altolamprologus: ancient introgression and recent divergence in a rock-dwelling Lake Tanganyika cichlid genus
JF - Hydrobiologia
VL - 791
IS - 1
SP - 35-50
EP - 35-50
PB - Springer
SN - 00188158
KW - Cichlidae
KW - Mitochondrial replacement
KW - Phylogeography
KW - Lake level fluctuations
KW - Lamprologini
KW - Hybridization
N2 - Stenotopic specialization to a fragmented habitat promotes the evolution of genetic structure. It is not yet clear whether small-scale population structure generally translates into large-scale intraspecific divergence. In the present survey of mitochondrial genetic structure in the Lake Tanganyika endemic Altolamprologus (Teleostei, Cichlidae), a rock-dwelling cichlid genus comprising A. compressiceps and A. calvus, habitat-induced population fragmentation contrasts with weak phylogeographic structure and recent divergence among genetic clades. Low rates of dispersal, perhaps along gastropod shell beds that connect patches of rocky habitat, and periodic secondary contact during lake level fluctuations are apparently sufficient to maintain genetic connectivity within each of the two Altolamprologus species. The picture of genetic cohesion was interrupted by a single highly divergent haplotype clade in A. compressiceps restricted to the northern part of the lake. Comparisons between mitochondrial and nuclear phylogenetic reconstructions suggested that the divergent mitochondrial clade originated from ancient interspecific introgression. Finally, ‘isolation-with-migration’ models indicated that divergence between the two Altolamprologus species was recent (67–142 KYA) and proceeded with little if any gene flow. As in other rock-dwelling cichlids, recent population expansions were inferred in both Altolamprologus species, which may be connected with drastic lake level fluctuations.
ER -
KOBLMÜLLER, Stephan, Bruno NEVADO, Lawrence MAKASA, Maarten VAN STEENBERGE, Maarten Pieterjan VANHOVE, Erik VERHEYEN, Christian STURMBAUER and Kristina SEFC. Phylogeny and phylogeography of Altolamprologus: ancient introgression and recent divergence in a rock-dwelling Lake Tanganyika cichlid genus. \textit{Hydrobiologia}. DORDRECHT: Springer, 2017, vol.~791, No~1, p.~35-50. ISSN~0018-8158. Available from: https://dx.doi.org/10.1007/s10750-016-2896-2.
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