Open AccessHistorical biogeography of Hexabathynella , a cosmopolitan genus of groundwater Syncarida (Crustacea, Bathynellacea, Parabathynellidae)
Author(s) -
CAMACHO ANA I.
Publication year - 2003
Publication title -
biological journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.906
H-Index - 112
eISSN - 1095-8312
pISSN - 0024-4066
DOI - 10.1046/j.0024-4066.2002.00149.x
Subject(s) - biogeography , vicariance , biology , genus , cenozoic , peninsula , crustacean , ecology , cosmopolitan distribution , phylogenetic tree , paleontology , phylogeography , structural basin , biochemistry , gene
Hexabathynellais the only cosmopolitan genus of the order Bathynellacea (Crustacea). The known species number 18, found in Europe (9), Africa (1), South America (2), North America (3) and Australia and New Zealand (3). Phylogenetic analysis suggests that the least derived species are those from South America and the most derived those from the Iberian Peninsula, North America and Australia. The five species with the most plesiomorphic characters occur in salt or brackish water, which supports a marine origin for the genus. Phylogenetic and biogeographical analyses suggest that the distribution of the genus can be explained by dispersion and a double vicariant biogeographical model based on plate tectonics and the evolution of the Tethys during the Mesozoic and Cenozoic. © 2003 The Linnean Society of London. Biological Journal of the Linnean Society, 2003,78 , 457–466.