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Phylogeography of the desert scorpion illuminates a route out of Central Asia. | LitMetric

Phylogeography of the desert scorpion illuminates a route out of Central Asia.

Curr Zool

State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.

Published: August 2023

AI Article Synopsis

  • * Phylogenetic analyses suggest that this lineage diverged from its Central Asian relatives around 1.36 million years ago, with significant dispersal events occurring during interglacial periods when climate conditions were similar to today.
  • * Findings indicate that the Junggar Basin served as a corridor for species exchange and that the development of desert ecosystems in northwest China could have facilitated population expansion, emphasizing the role of species adaptation during climate changes.

Article Abstract

A comprehensive understanding of phylogeography requires the integration of knowledge across different organisms, ecosystems, and geographic regions. However, a critical knowledge gap exists in the arid biota of the vast Asian drylands. To narrow this gap, here we test an "out-of-Central Asia" hypothesis for the desert scorpion by combining Bayesian phylogeographic reconstruction and ecological niche modeling. Phylogenetic analyses of one mitochondrial and three nuclear loci and molecular dating revealed that represents a coherent lineage that diverged from its most closely related lineage in Central Asia about 1.36 Ma and underwent radiation ever since. Bayesian phylogeographic reconstruction indicated that the ancestral population dispersed from Central Asia gradually eastward to the Gobi region via the Junggar Basin, suggesting that the Junggar Basin has severed as a corridor for Quaternary faunal exchange between Central Asia and East Asia. Two major dispersal events occurred probably during interglacial periods (around 0.8 and 0.4 Ma, respectively) when climatic conditions were analogous to present-day status, under which the scorpion achieved its maximum distributional range. underwent demographic expansion during the Last Glacial Maximum, although the predicted distributional areas were smaller than those at present and during the Last Interglacial. Development of desert ecosystems in northwest China incurred by intensified aridification might have opened up empty habitats that sustained population expansion. Our results extend the spatiotemporal dimensions of trans-Eurasia faunal exchange and suggest that species' adaptation is an important determinant of their phylogeographic and demographic responses to climate changes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10443618PMC
http://dx.doi.org/10.1093/cz/zoac061DOI Listing

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