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A new species of Typhlatya (Crustacea: Decapoda: Atyidae) from anchialine caves on the French Mediterranean coast

Autor Jaume, Damià; Bréhier, Franck
Palabras clave Zanclea
Tethyan relicts
Decapoda (Crustacea)
Fecha de publicación 6-jul-2005
EditorBlackwell Publishing
Citación Zoological Journal of the Linnean Society 144(3): 387-414 (2005)
ResumenA new species of the thermophylic Tethyan relict prawn Typhlatya is described from two anchialine caves near Perpignan (southern France). The new species is closely related to a congener known only from a freshwater cave at Castellón (eastern Spain), about 400 km to the south-west, differing apparently only in the size and shape of the rostrum and the armature of the dactylus of the fifth pereiopod. Based on palaeogeographical evidence and assuming a sister-group relationship between both species, we suggest that their common ancestor could not be older than early Pliocene in age, and that it was already a stygobiont taxon adapted to live in shallow-water marine crevicular habitats. This ancestor would have vanished from the western Mediterranean after the cooling associated with the onset of northern Hemisphere glaciation, about 3 Mya, as documented for other Mediterranean marine taxa. Indeed, the genus is completely stygobiont and does not occur in fluvial environments. The Pyrenees represent a watershed boundary that eliminates the possibility of the derivation of one species from the other by active dispersal after establishment in continental waters. © 2005 The Linnean Society of London.
Versión del editorhttp://dx.doi.org/10.1111/j.1096-3642.2005.00175.x
URI http://hdl.handle.net/10261/103482
Identificadoresdoi: 10.1111/j.1096-3642.2005.00175.x
issn: 0024-4082
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