Genomic insights into the origin of trans-Mediterranean disjunct distributions: The case of the saltmarsh band-winged grasshopper (Mioscirtus wagneri)

Víctor Noguerales, Pedro J. Cordero, L. Lacey Knowles & Joaquín Ortego
Aim: Two main biogeographic hypotheses have been proposed to explain the Mediterranean-Turanian disjunct distributions exhibited by numerous steppe-dwelling organisms, namely (i) dispersal during the Messinian salinity crisis (∼5.96-5.33 Ma) followed by range fragmentation and vicariance, and (ii) Pleistocene colonization and recent processes of population subdivision (<2 Ma). Despite the two hypotheses postulate the role of climatic alterations and changes in landmass configuration on determining such disjunct distributions, estimates of the timing of lineage diversification have...
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