著者

Sho Toshino Jun Nishikawa Khwanruan Srinui Supattra Taleb Hiroshi Miyake

出版者

The Plankton Society of Japan, The Japanese Association of Benthology

雑誌

Plankton and Benthos Research (ISSN:18808247)

巻号頁・発行日

vol.14, no.3, pp.143-149, 2019-08-26 (Released:2019-08-17)

参考文献数

29

被引用文献数

2

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The stings of box jellyfishes can be fatal, so knowing the fauna of a certain area is important to save lives. Five described and two still-undescribed species of Cubozoa have been reported from Thailand: Chironex indrasaksajiae, Chironex sp., Chiropsella sp., Chiropsoides buitendijki, Copula sivickisi, Morbakka fenneri, and Tripedalia cystophora. We made detailed observations of the morphology of two of the species newly recorded in Thailand: Alatina morandinii and Tripedalia binata. The molecular phylogeny of these species is also discussed. Additional investigations are needed to understand the diversity of Cubozoa in Thailand.

著者

Yusuke Kondo Shoma Okada Susumu Ohtsuka Takeshi Hirabayashi Aya Adachi Makoto Urata Sho Toshino Hiroshi Miyake Nanako O. Ogawa Naohiko Ohkouchi

出版者

The Plankton Society of Japan, The Japanese Association of Benthology

雑誌

Plankton and Benthos Research (ISSN:18808247)

巻号頁・発行日

vol.13, no.2, pp.66-74, 2018-05-30 (Released:2018-05-24)

参考文献数

50

被引用文献数

1 1

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In this study, we investigated the trophic interactions between the Japanese giant box jellyfish, Morbakka virulenta, and fish in the central part of the Seto Inland Sea, western Japan, in autumn and winter. Occurring in the surface waters at nighttime, these cubomedusae, regardless of their size (1.5 to 22.5 cm in bell height), were found to be piscivorous, feeding mainly on the Japanese anchovy, as shown by their stomach contents analysis. This finding was supported by a stable isotopic analysis and by an unchanged cnidome, irrespective of the bell height of medusae. Their nocturnal occurrence near the surface often took place around the slack tide, during which the medusae were foraging with tentacles fully extended. Other associations between the medusae and fish were also observed at this time: presumed commensalism with juvenile Japanese horse mackerel, and predation by black scraper.

著者

Susumu Ohtsuka Kazuhiko Koike Dhugal Lindsay Jun Nishikawa Hiroshi Miyake Masato Kawahara Nova Mujiono Juro Hiromi Hironori Komatsu

出版者

The Plankton Society of Japan, The Japanese Association of Benthology

雑誌

Plankton and Benthos Research (ISSN:18808247)

巻号頁・発行日

vol.4, no.1, pp.1-13, 2009-02-25 (Released:2009-04-20)

参考文献数

91

被引用文献数

45 53

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Since marine medusae and ctenophores harbor a wide variety of symbionts, from protists to fish, they constitute a unique community in pelagic ecosystems. Their symbiotic relationships broadly range from simple, facultative phoresy through parasitisim to complex mutualism, although it is sometimes difficult to define these associations strictly. Phoresy and/or commensalism are found in symbionts such as pycnogonids, decapod larvae and fish juveniles. Parasitism and/or parasitoidism are common in the following symbionts: dinoflagellates, ciliates, anthozoan larvae, pedunculate barnacles, anuropid isopods, and hyperiid amphipods. Mutualism is established between ctenophores and gymnamoebae, and between rhizostome medusae and endosymbiotic dinoflagellates. More information on symbiotic apostome ciliates, anthozoan larvae and hyperiid amphipods is definitely needed for further studies in consideration of their high prevalence and serious damage they can inflict on their hosts. The present paper briefly reviews previously published data on symbionts on these gelatinous predators and introduces new information in the form of our unpublished data.

著者

Shoichi KOBAYASHI Hiroshi MIYAKE Tetsuya SHOJI

出版者

Japan Association of Mineralogical Sciences

雑誌

Mineralogical Journal (ISSN:05442540)

巻号頁・発行日

vol.13, no.6, pp.314-327, 1987 (Released:2007-03-31)

参考文献数

19

被引用文献数

14 16

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A jadeite rock from Oosa-cho, northern part of Okayama, is associated with serpentinite of the Sangun metamorphic belt. It consists predominantly of jadeite with such accessary minerals as grossular, analcime, prehnite, vesuvianite, natrolite, thomsonite, stronalsite, zircon, deweylite, chlorite and diopside. It is cut by many veinlets composed of one or more of grossular, analcime, vesuvianite, stronalsite, chlorite and zeolite minerals.On the electron microprobe image, some of jadeite crystals show a growth zoning of diopsidic (Jd96Di3Fs1) and pure (approximately Jd100) parts. Some crystals of garnet show chemical zoning. The core is poor in TiO2, FeO and CaO, but rich in Al2O3 as compared with the rim. Zircon occurs sporadically. Under the microscope, a few grains of stronalsite are observed. Its chemical composition is very similar to the ideal formula, Na2SrAl4Si4016. Ba-rich parts are also recognized in a stronalsite crystal.

著者

三宅 裕志 山本 啓之 北田 貢 植田 育男 大越 健嗣 喜多村 稔 松山 和世 土田 真二 Hiroshi Miyake Hiroyuki Yamamoto Mitsugu Kitada Ikuo Ueda Kenji Okoshi Minoru Kitamura Kazuyo Matsuyama Shinji Tsuchida 新江ノ島水族館:海洋研究開発機構(JAMSTEC) 新江ノ島水族館 新江ノ島水族館 新江ノ島水族館 石巻専修大学 海洋研究開発機構(JAMSTEC) 海洋研究開発機構(JAMSTEC) 海洋研究開発機構(JAMSTEC) Enoshima Aquarium:Japan Agency for Marine-Earth Science and Technology Center (JAMSTEC) Enoshima Aquarium Enoshima Aquarium Enoshima Aquarium Ishinomaki Senshu University Japan Agency for Marine-Earth Science and Technology Center (JAMSTEC) Japan Agency for Marine-Earth Science and Technology Center (JAMSTEC) Japan Agency for Marine-Earth Science and Technology Center (JAMSTEC)

出版者

日本海洋学会

雑誌

海の研究 (ISSN:09168362)

巻号頁・発行日

vol.14, no.6, pp.645-651, 2005-11-05

参考文献数

9

被引用文献数

1 4

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シロウリガイ類は深海から採集すると通常2, 3日しか生存せず, 飼育を試みた報告は皆無であった。本研究では, シロウリガイ類の飼育の試みとして, 良好な健康状態で採集し, かつシロウリガイ類の共生細菌のエネルギー源(泥中の硫化水素)を確保するために, 圧力以外の現場環境をできる限り維持した状態で採集する装置のMTコアを開発した。また, シロウリガイ類は高酸素濃度に弱いため, 溶存酸素濃度制御装置により低酸素濃度環境を維持する飼育システムを製作した。シロウリガイとエンセイシロウリガイをそれぞれ相模湾初島沖水深1,150m~1,160mの地点, 石垣島沖の黒島海丘の643mの地点で採集した。採集したシロウリガイは約1週間で死亡したが, 黒島海丘のエンセイシロウリガイは17日間生存した。また, エンセイシロウリガイでは2回放卵が確認された。以上のことから, エンセイシロウリガイは飼育が容易な種と考えられた。