DSpace コレクション: 2015-09
http://hdl.handle.net/2433/193234
2015-092024-03-28T22:10:50ZCover & Contents
http://hdl.handle.net/2433/199866
タイトル: Cover & Contents2015-09-15T00:00:00ZPlanuloid budding from a cutting plane of polyp stalk of Cassiopea sp.(Cnidaria, Scyphozoa)
http://hdl.handle.net/2433/199853
タイトル: Planuloid budding from a cutting plane of polyp stalk of Cassiopea sp.(Cnidaria, Scyphozoa)
著者: Niina, Kazuhito; Gravili, Cinzia; Kubota, Shin
抄録: Cassiopea polyps that appeared in culture vessels of Turritopsis sp. polyps at the Seto Marine Biological Laboratory, Kyoto University in 2014 were experimentally amputated their stalks from the calyxes. On the cutting plane, planuloid buds were exclusively produced and stalks were never regenerated. Planuloids became polyps but some of them were never produced stalks. It is assumed that the polyp that accidentally lost its stalk has a chance to raise their survival rate by releasing multiple of planuloids.2015-09-15T00:00:00ZA histology-free description of the branched-proboscis ribbonworm Gorgonorhynchus albocinctus sp. nov. (Nemertea: Heteronemertea)
http://hdl.handle.net/2433/199852
タイトル: A histology-free description of the branched-proboscis ribbonworm Gorgonorhynchus albocinctus sp. nov. (Nemertea: Heteronemertea)
著者: KAJIHARA, Hiroshi
抄録: A new species of heteronemertean with branched proboscis, Gorgonorhynchus albocinctus sp. nov., is described based on the external feature and DNA sequences from a specimen collected subtidally among coral rubbles at a depth of about 6 m in a reef area around Taketomi Island in the Yaeyama Islands, southwestern Japan. It can be classified in the genus because the mode of proboscis branching is dichotomous, rather than alternating laterally. From the two known congeners G. repens Dakin and Fordham, 1931 and G. bermudensis Wheeler, 1940, the new species can be differentiated by having a brown body colour with a white band near the tip of the head. The new species is placed in a molecular phylogenetic context with a maximum-likelihood analysis using the nuclear 18S rRNA and 28S RNA genes, as well as the mitochondrial cytochrome c oxidase subunit I gene, together with 20 species of heteronemerteans, for which those sequences were available in the public databases. The results indicate that G. albocinctus is closely related to Cerebratulus leucopsis (Coe, 1901), a species that is supposed to have a non-branched proboscis.2015-09-15T00:00:00ZAnnotated checklist of the sharks, batoids and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali) from waters of Russia and adjacent areas
http://hdl.handle.net/2433/197957
タイトル: Annotated checklist of the sharks, batoids and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali) from waters of Russia and adjacent areas
著者: YURY V. DYLDIN
抄録: This is the first comprehensive list of sharks, batoids (rays and skates) chimaeras recorded from the waters of Russia and adjacent territories. This includes scientific names, common names (English, Russian in Latin transcription, Japanese and Czech), taxonomic comments, if necessary, distribution, synonymy and conservation status. From Russia the border areas, 40 species of sharks, 59 species of batoids and 7 species of chimeras that belong to the two classes (Elasmobranchii and Holocephali), 11 orders, 29 families, 5 subfamilies and 54 genera have been recorded over the last hundred years.2015-09-15T00:00:00Z