Quaternary range-shifts of arboreal rodents of the genus Habromys (Cricetidae, Neotominae) in Mesoamerica and their evolutionary consequences
Por:
Leon-Paniagua, Livia, Guevara, Lazaro
Publicada:
1 ene 2019
Resumen:
Arboreal mice of the genus Habromys (Cricetidae, Neotominae) comprise a
Glade of seven monotypic and endangered species that inhabit
Mesoamerican cloud forests, one of the most threatened of the world's
ecosystems. Previous genetic analyses have suggested that closely
related lineages are poorly differentiated, which is probably an
evolutionary consequence of distributional shifts driven by Quaternary
climate oscillations through a complex topography. Here, we assess the
potential role of distributional shifts through time on current patterns
of genetic differentiation in Habromys. Following recent bestpractices
recommendations for estimating ecological niches and paleodistributions
for montane species, we estimated the potential distribution of the
genus across the last glacial-interglacial cycle under three alternative
Global Circulation Models to explore the more recent evolutionary
history of this genus. Distributional shifts and population connectivity
among populations of Habromys were greatly affected by past climate
change coupled with topographic habitat heterogeneity. The effectiveness
of some barriers to dispersal has changed over time as result of the
climatic oscillations. Poorly differentiated genetic lineages might be
an evolutionary consequence of intermittent connections and corridors
for montane species motivated by glaciations. Some valleys and lowland
habitats probably served as previously unrecognized barriers to
dispersal during warmer periods. This study emphasizes the dynamic
nature of species' geographic distributions and potential barriers to
create current patterns of genetic variation in Mesoamerican rodents.
(C) 2018 Deutsche Gesellschaft far Saugetierkunde. Published by Elsevier
GmbH. All rights reserved.
Filiaciones:
Leon-Paniagua, Livia:
Museo de Zoología “Alfonso L. Herrera”, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Fac Ciencias, Museo Zool Alfonso L Herrera, Mexico City 04510, DF, Mexico
Guevara, Lazaro:
Museo de Zoología “Alfonso L. Herrera”, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Fac Ciencias, Museo Zool Alfonso L Herrera, Mexico City 04510, DF, Mexico
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Mexico City 04510, DF, Mexico
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