Thiercelin, N. and Schubart, C. D. (2014) Transisthmian differentiation in the tree-climbing mangrove crab Aratus H. Milne Edwards, 1853 (Crustacea, Brachyura, Sesarmidae), with description of a new species from the tropical eastern Pacific. ZOOTAXA, 3793 (5). pp. 545-560. ISSN 1175-5326, 1175-5334
Full text not available from this repository. (Request a copy)Abstract
The tree-climbing mangrove crab Aratus pisonii (H. Milne Edwards, 1837) (Brachyura, Sesarmidae) is considered to have a transisthmian distribution, due to its presence in mangroves of the Western Atlantic as well as the Eastern Pacific. We here present evidence, based on the morphologies of male gonopods and on genetic data, that populations from these two coastlines are morphologically and genetically distinct and require the description of a new species, Aratus pacificus n. sp., as the sister-species of Aratus pisonii. The corresponding speciation event can be regarded as the outcome of differentiation following the closure of the Isthmus of Panama. As these coastal brackish species were probably among the last ones to become separated, the speciation can thus be dated to a time frame of no more than 3.1 million years.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MOLECULAR PHYLOGENY; LIFE-HISTORY; PISONII; MORPHOLOGY; GRAPSIDAE; DECAPODA; LARVAL; RATES; new species; gonopods; eastern Pacific region; Isthmus of Panama |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie > Zoologie/Evolutionsbiologie (Prof. Dr. Jürgen Heinze) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 11 Nov 2019 09:47 |
| Last Modified: | 11 Nov 2019 09:47 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10196 |
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