期刊
JOURNAL OF EUKARYOTIC MICROBIOLOGY
卷 51, 期 3, 页码 267-281出版社
WILEY
DOI: 10.1111/j.1550-7408.2004.tb00567.x
关键词
intraspecific variability; live observation; phylogeny; protargol impregnation; scanning electron microscopy; SSrRNA; Strombidiidae; taxonomy
类别
资金
- Austrian Science Fund FWF [P 17752] Funding Source: Medline
Laboea strobila Lohmann, 1908 is a conspicuous oligotrich ciliate in the marine plankton. In order to compare different populations, the morphology of specimens from the Mediterranean Sea, North Sea, and Irish Sea was investigated using live observation, protargol impregnation, and scanning electron microscopy. Furthermore, the PCR-amplifted products of the SSrRNA gene from a monoclonal culture of L. strobila from the Mediterranean Sea were sequenced and aligned with sequences of other oligotrichs, including a population of L. strobila from the Atlantic coast of the USA. Finally, the data from the ecological literature were summarized and the cultivation methods were described. The SSrRNA gene sequences of the two distantly located L. strobila populations from the North Atlantic are identical. Likewise, the morphometrics of most populations so far investigated after protargol impregnation (i.e. from the North Atlantic) do not show obvious differences. In all computed phylogenetic trees, L. strobila groups with Strombidium species, forming a monophyletic taxon corresponding to the subclass Oligotrichia. These results are corroborated by the ontogenetic comparison. Since no type species was fixed for Laboea Lohmann, 1908, L. strobila was designated in the present paper.
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