Downloads: 197

Files in This Item:
File Description SizeFormat 
Bull.biogeogr_58_39.pdf835.37 kBAdobe PDFView/Open
Title: 日本海産ハナクラゲモドキMelicertum octocostatum(軟クラゲ目, ハナクラゲモドキ科)の成熟クラゲ
Other Titles: A mature medusa of Melicertum octocostatum (Leptomedusae, Mehcertidae) in the Sea of Japan
Authors: 奥泉, 和也  KAKEN_name
久保田, 信  kyouindb  KAKEN_id
Author's alias: Okuizumi, Kazuya
Kubota, Shin
Keywords: Cmdome
egg size
geographical distribution
mature medusa
Melicertum octocostaturn
Issue Date: 12-Dec-2003
Publisher: 日本生物地理学会
Journal title: 日本生物地理学会会報
Volume: 58
Start page: 39
End page: 41
Abstract: A living mature female medusa of Melicertum octocostatum (M. Sars) (Leptomedusae, Melicertidae) was collected in the Sea of Japan off the coast of Yamagata Pref., northern Japan in June, 2003. This specimen serves as the basis for the first description of this developmental stage of this species in Japan. The morphology, cmdome on the tentacles and oral lips (atnchous isorhizas and microbasic mastigophores), and egg size (mostly 104 urn in diameter) of this medusa are described, and occurrence records of 23 other medusan specimens of this species from the same area in Yamagata Prefecture are given. In comparison with 7 other described specimens from two localities in northern Japan (Hokkaido and Aomon Pref.), the present specimen is the largest (15.1mm in both diameter and umbrellar height) and has the most numerous tentacles (at least 80 large tentacles and a nearly equal number of small tentacles). Two individuals of a parasitic trematode were found in the mesogloea of the female medusa.
Rights: © 2003 日本生物地理学会
Appears in Collections:Journal Articles

Show full item record

Export to RefWorks

Export Format: 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.