期刊
HYDROBIOLOGIA
卷 594, 期 -, 页码 5-17出版社
SPRINGER
DOI: 10.1007/s10750-007-9076-3
关键词
nomenclature; genetic markers; 12S mitochondrial gene; ITS; biogeography; pelagic predation
While molecular markers have revealed several distinct species within the Daphnia longispina group, there is a need to reconcile these species with traditional nomenclature. Here we show that one such species, called D. longispina in recent literature based on molecular markers, can reliably be associated with the described taxon Daphnia lacustris G.O. Sars, 1862. Both mitochondrial and nuclear molecular markers readily distinguish this species from others in the D. longispina group. D. lacustris is absent in the region from which D. longispina was first described (Denmark), and the designation D. longispina must be reserved for another widespread species represented by Danish lineages. While the diagnosis of D. lacustris (and other species of the D. longispina group) by molecular markers is unequivocal, distinguishing it morphologically from other species is still problematic. The presently known distribution range of D. lacustris includes most of Norway, northern Finland and a single lake in the Polish Tatra Mountains. Its typical habitat is oligotrophic lakes without intense fish predation.
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