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Ancient diversification, biogeography, and the role of climatic niche evolution in the Old World cat snakes (Colubridae, Telescopus)
J. Šmíd, B. Göçmen, PA. Crochet, JF. Trape, T. Mazuch, M. Uvizl, ZT. Nagy,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
Odkazy
PubMed
30703516
DOI
10.1016/j.ympev.2019.01.015
Knihovny.cz E-zdroje
- MeSH
- analýza hlavních komponent MeSH
- Bayesova věta MeSH
- biologická evoluce * MeSH
- časové faktory MeSH
- Colubridae klasifikace MeSH
- déšť MeSH
- fylogeneze MeSH
- fylogeografie * MeSH
- kalibrace MeSH
- podnebí * MeSH
- teplota MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Afrika MeSH
- Arábie MeSH
The process of species diversification is often associated with niche shifts in the newly arising lineages so that interspecific competition is minimized. However, an opposing force known as niche conservatism causes that related species tend to resemble each other in their niche requirements. Due to the inherent multidimensionality of niche space, some niche components may be subject to divergent evolution while others remain conserved in the process of speciation. One such possible component is the species' climatic niche. Here, we test the role of climatic niche evolution on the diversification of the Old World cat snakes of the genus Telescopus. These slender, nocturnal snakes are distributed in arid and semiarid areas throughout Africa, southwest Asia and adjoining parts of Europe. Because phylogenetic relationships among the Telescopus species are virtually unknown, we generated sequence data for eight genetic markers from ten of the 14 described species and reconstructed a time-calibrated phylogeny of the genus. Phylogenetic analysesindicate that the genus is of considerably old origin that dates back to the Eocene/Oligocene boundary. Biogeographical analyses place the ancestor of the genus in Africa, where it diversified into the species observed today and from where it colonized Arabia and the Levant twice independently. The colonization of Arabia occurred in the Miocene, that of the Levant either in the Late Oligocene or Early Miocene. We then identified temperature and precipitation niche space and breadth of the species included in the phylogeny and examined whether there is phylogenetic signal in these climatic niche characteristics. Despite the vast range of the genus and its complex biogeographic history, most Telescopus species have similar environmental requirements with preference for arid to semiarid conditions. One may thus expect that the genus' climatic niche will be conserved. However, our results suggest that most of the climatic niche axes examined show no phylogenetic signal, being indicative of no evolutionary constraints on the climatic niche position and niche breadth in Telescopus. The only two variables with positive phylogenetic signal (temperature niche position and precipitation niche breadth) evolved under the Brownian motion model, also indicating no directional selection on these traits. As a result, climatic niche evolution does not seem to be the major driver for the diversification in Telescopus.
Department of Biology Zoology Section Faculty of Science Ege University 35100 Bornova İzmir Turkey
Department of Zoology Faculty of Science Charles University Viničná 7 12844 Prague Czech Republic
Department of Zoology National Museum Cirkusová 1740 19300 Prague Czech Republic
Dříteč 65 53305 Czech Republic
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- $a Šmíd, Jiří $u Department of Zoology, National Museum, Cirkusová 1740, 19300 Prague, Czech Republic; Department of Zoology, Faculty of Science, Charles University, Viničná 7, 12844 Prague, Czech Republic. Electronic address: jirismd@gmail.com.
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