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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24379

Title: Cryptic diversity and speciation in endemic Cytherissa (Ostracoda, Crustacea) from Lake Baikal
Authors: Schon, Isa
Pieri, Valentina
Sherbakov, Dimtry Yu
Martens, Koen
Issue Date: 2017
Publisher: SPRINGER
Citation: HYDROBIOLOGIA, 800(1), p. 61-79
Abstract: Lake Baikal (Siberia) is the most ancient and deepest of all ancient lakes on Earth. It holds a (mostly endemic) diversity of thousands of animal species, including a speciose radiation of ostracods of the genus Cytherissa. Applying molecular tools to this crustacean group reveals that several morphological species are actually species clusters. Based on combined 16S and 28S DNA sequence data from thirteen classic Cytherissa species and one subspecies sensu Mazepova (1990), we recognize 26 different genetic Cytherissa species, 18 with morphological variation and eight truly cryptic species. These results suggest that the actual specific diversity of Cytherissa in Lake Baikal might easily be double of what is presently known. Baikalian endemic species most likely live in the cradle in which they originated and this opens perspectives to infer modes of speciation. Our current distribution data of Cytherissa species provide first indications for both geographic (lakes basins and shores) and ecological (sediment type, water depth) separation. Our present data thus provide the first steps towards future, rigorous testing of focussed hypotheses on the causality of speciation through either allopatric isolation or parapatric ecological clines.
Notes: [Schon, Isa; Martens, Koen] Royal Belgian Inst Nat Sci, Freshwater Biol, Vautierstr 29, B-1000 Brussels, Belgium. [Schon, Isa] Univ Hasselt, Res Grp Zool, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium. [Pieri, Valentina] Univ Parma, Dept Chem Life Sci & Environm Sustainabil, I-43124 Parma, Italy. [Sherbakov, Dimtry Yu] Russian Acad Sci, Lab Mol Systemat, Limnol Inst, Siberian Branch, Ulan Batorskaya 3, Irkutsk 664033, Russia. [Martens, Koen] Univ Ghent, Dept Biol, KL Ledeganckstr 35, B-9000 Ghent, Belgium.
URI: http://hdl.handle.net/1942/24379
DOI: 10.1007/s10750-017-3259-3
ISI #: 000406385800006
ISSN: 0018-8158
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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