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Advisor(s)
Abstract(s)
The Iberian Peninsula is one of the most ancient geological areas in Europe. Its complex
orography is a consequence of several geological episodes related with two orogenic
episodes that occurred from Late Devonian (Variscan orogeny) to the Cenozoic
(Alpine orogeny). Unraveling the evolutionary history of strict freshwater fauna, such
as leuciscid fishes, may contribute to our understanding of the paleogeographic history
of a region and its configuration along time. Within the Iberian freshwater fish
fauna, the genus Squalius is one of the oldest and most diversified leuciscids. Here, we
used phylogenetic, phylogeographic, and ancestral area reconstruction approaches
to infer relationships among Iberian drainages and the biogeographic history of these
Squalius species, particularly of two of the most widely distributed species, S. carolitertii
and S. pyrenaicus. Our results confirmed, in agreement with previous studies, an
underestimation of the real diversity of Squalius in the Iberian Peninsula and identified
divergent evolutionary lineages, highlighting the reticulate evolutionary history of the
Iberian Squalius species. The ancestral reconstruction analyses indicated that several
vicariance and dispersal processes occurred among different Squalius lineages, linked
to the paleogeographic configuration of the Iberian Peninsula during the Cenozoic
period.
Description
Keywords
Historical biogeography Mitonuclear discordance Phylogeny Squalius
Citation
Perea, S., Santos, C. Sousa, Robalo, J.& Doadrio, I.(2021). Historical biogeography of the Iberian Peninsula: multilocus phylogeny and ancestral area reconstruction for the freshwater fish genus Squalius (Actinopterygii, Leuciscidae). Journal of Zoological Systematics and Evolutionary Research, DOI: 10.1111/jzs.12464
Publisher
Wiley-Blackwell Publishing Ltd