マスダ ヨシキ   Yoshiki Masuda
  益田 芳樹
   所属   川崎医療福祉大学  医療福祉学部 臨床心理学科
   職種   特任教授
論文種別 原著
言語種別 英語
査読の有無 査読あり
表題 Phylogenetric relationships between Lubomirskiidae, Spongillidae and some marine sponges according partial sequences of 18S rDNA.
掲載誌名 正式名:Memoirs of the Queensland Museum
ISSNコード:00798835
巻・号・頁 44,275-280頁
著者・共著者 Itskovich Valeria B., Belikov S. I., Efremova Sofia M., Masuda Yoshiki
発行年月 1999
概要 Two families of Porifera are represented in Lake Baikal, Russia: cosmopolitan Spongillidae and endemic Lubomirskiidae. Systematics and phylogeny of Lubomirskiidae are still poorly known. Indeed, there is little agreement on the origin of freshwater sponges in general, and this group is considered to be polyphyletic. Latest morphological and embryological data indicate that Lubomirskiidae and Spongillidae are closely related. Using molecular data we explored the possible origins of Lubomirskiidae and determined the closest relatives of Spongillidae and Lubomirskiidae among marine sponges. Partial sequences of 18S rRNA for Halichondria japonica, Lubomirskia abietina, Swartschewskia papyracea, Spongilla lacustris and Ephydatia muelleri were compared with available sequences of 18S rDNA of other Porifera from the GenBank. Parsimony and neighbour-joining analyses gave trees of similar topology. Molecular data were in accordance with the notion of close relationships of endemic and cosmopolitan families. Some marine sponge families are assumed to be related to freshwater sponges.