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Molecular characterizations of the Arctic jellies from Svalbard (79°N), Norway, by ribosomal DNA sequences

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Title
Molecular characterizations of the Arctic jellies from Svalbard (79°N), Norway, by ribosomal DNA sequences
Other Titles
Ribosomal DNA 염기서열을 이용한 북극 Svalbard에 서식하는 Arctic jellyfish의 분자적 특성 분석
Authors
기장서
Lee, Jae-Seong
Kim, Il-Chan
Keywords
Arctic jellyfish; Beroe; Bolinopsis; Cyanea; rDNA
Issue Date
2008
Citation
기장서, Lee, Jae-Seong, Kim, Il-Chan. 2008. Molecular characterizations of the Arctic jellies from Svalbard (79°N), Norway, by ribosomal DNA sequences. KOPRI. KOPRI. 2008.09.26~.
Abstract
Gelatinous plankton organisms (jellyfishes) frequently observed in Arctic coastal waters of Svalbard (79N) in summer, and belong to cnidarians and ctenophores morphologically. Species identification, however, remained unclear due to lack of knowledge. In this study, we determined 18S and 28S ribosomal DNA sequences of five jellies (five genera: Beroe, Bolinopsis, Cyanea, Leuckartiara, and Leuckartiara) from Svalbard coastal waters in August 2006. Comparative analyses of the sequences revealed that two cryptic jellies were Bolinopsis infundibulum (Ctenophora
cyclocoela) and Mertensia ovum (Otenophora
Typhlocoela) but we could not identify the remaining three genera to species level. On the molecular data, they belonged to Beroe sp. (Ctenophora
Typhlocoela), Cyanea sp. (Cnidaria
Scyphozoa), Leuckartiara sp. (Cnidaria
Hydroida), respectively according to their morphological characters. Phylogenetic analysis showed that the Arctic jellies formed the independent clade, respectively. This suggests that the Arctic jellies may possess a little genetic variation, compared to the same species from other regions (e. g. temperate, tropical). These may provide genetic characteristics of the Arctic jellies using rDNA for making molecular comparisons of jellies.
URI
http://repository.kopri.re.kr/handle/201206/7876
Conference Name
KOPRI
Conference Place
KOPRI
Conference Date
2008.09.26~
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