Aegla alacalufi and A. neuquensis are exclusively found in freshwater systems of Patagonia. The geographic distribution range of A. alacalufi is vast and fragmented, covering continental and insular rivers. A new record of this species on Duque de York Island (50°34′S-75°20′W) defines the southernmost limit for the distribution of freshwater anomuran crustaceans. Aegla neuquensis is only found in Extra-Andean Patagonian rivers. The current geographic distribution patterns of these species can be explained by the existence of multiple island glacial refuges during the Last Glacial Maximum and by the hydrographic captures that occurred during the Late Glacial.
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1 July 2011
The Southernmost Freshwater Anomurans of the World: Geographic Distribution and New Records of Patagonian Aeglids (Decapoda: Aeglidae)
Alejandra Oyanedel,
Claudio Valdovinos,
Natalia Sandoval,
Carolina Moya,
Gloria Kiessling,
Jacqueline Salvo,
Viviana Olmos
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Journal of Crustacean Biology
Vol. 31 • No. 3
July 2011
Vol. 31 • No. 3
July 2011
Aegla
glacial refuges
hydrographic capture
Last Glacial Maximum
Patagonia
