2017
Phylogeny and phylogeography of Altolamprologus: ancient introgression and recent divergence in a rock-dwelling Lake Tanganyika cichlid genus
KOBLMÜLLER, Stephan, Bruno NEVADO, Lawrence MAKASA, Maarten VAN STEENBERGE, Maarten Pieterjan VANHOVE et. al.Základní údaje
Originální název
Phylogeny and phylogeography of Altolamprologus: ancient introgression and recent divergence in a rock-dwelling Lake Tanganyika cichlid genus
Autoři
KOBLMÜLLER, Stephan (40 Rakousko), Bruno NEVADO (620 Portugalsko), Lawrence MAKASA (894 Zambie), Maarten VAN STEENBERGE (56 Belgie), Maarten Pieterjan VANHOVE (56 Belgie, garant, domácí), Erik VERHEYEN (56 Belgie), Christian STURMBAUER (40 Rakousko) a Kristina SEFC (40 Rakousko)
Vydání
Hydrobiologia, DORDRECHT, Springer, 2017, 0018-8158
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.165
Kód RIV
RIV/00216224:14310/17:00094670
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000396043800004
Klíčová slova anglicky
Cichlidae; Mitochondrial replacement; Phylogeography; Lake level fluctuations; Lamprologini; Hybridization
Změněno: 10. 4. 2018 16:12, Ing. Nicole Zrilić
Anotace
V originále
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.
Návaznosti
GBP505/12/G112, projekt VaV |
|