著者

Pauline NARVAEZ Renato A. MORAIS

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.22, no.1, pp.31-36, 2020 (Released:2020-12-09)

参考文献数

36

被引用文献数

2

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Cleaner fishes remove ectoparasites, mucus and dead tissues from other ‘client’ organisms. These mutu-alistic interactions provide benefits for the ‘clients’ and, on a larger scale, maintain healthy reef ecosystems. Here, we report two species of angelfishes, Centropyge bicolor and C. tibicen, acting as cleaners of the blue tang Paracanthurus hepatus in an aquarium. This observation is the first time that pygmy angelfishes are recorded cleaning in any en-vironment. This novel cleaning ob-servation raises ques-tions on the ecosystem role of cleaner fishes and which biological traits facilitate cleaning.

著者

Hajime SATO Yoichi SAKAI Tetsuo KUWAMURA

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.22, no.1, pp.1-2, 2020 (Released:2020-05-12)

参考文献数

4

被引用文献数

3

著者

Tomoko Yuasa Takeo Horiguchi Osamu Takahashi

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

pp.G2021_S5O, (Released:2021-11-19)

参考文献数

46

被引用文献数

1

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The ultrastructure of a symbiotic dinoflagellate Zooxanthella nutricula within the radiolarian Didymocyrtis tetrathalamus collected off the northwestern coast of Okinawa Island, Japan was examined in the symbiotic state and the cultured motile stage. In hospite, Z. nutricula had a coccoid morphology, and the typical dinoflagellate structures, i.e., cingulum, sulcus, and flagella were lost. The coccoid non-motile cells were surrounded by a perialgal envelope of the host radiolarian cytoplasm, and they possessed a dinokaryon with condensed chromosomes and mitochondria with tubular cristae. The chloroplast was located at the periphery of the cell and had one or two pyrenoids. In culture, however, the motile cells exhibited a typical cell shape of peridinioid dinoflagellates. The cell covering consisted of a plasma membrane and amphiesmal vesicles containing the thecal plates whose arrangement was congruent to the order Peridiniales. The chloroplast was enclosed by three membranes and the pyrenoid was the double-stalked type. Pusules constructed by tubules with invaginations were present, but eyespot and trichocysts were lacked. Symbiotic dinoflagellates, such as Zooxanthella, Symbiodinium, and Amphidinium, have historically been referred to using the general term ‘zooxanthella(e)' because of their similar appearances as yellow-brown spherical minute cells under light microscopy. However, the motile cells of Z. nutricula exhibited a typical peridinioid morphology and thecal plate arrangement that obviously differed from those of the other Symbiodiniaceae genera and Amphidinium. Considering the ultrastructural features and the currently available sequence database, it was suggested that Z. nutricula is a symbiotic dinoflagellate that lives specifically in holoplanktonic protist radiolarians.

著者

Ryosuke Murata Takafumi Amagai Daisuke Izumida Yuji Mushirobira Ryo Nozu Kiyoshi Soyano

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

pp.G2021_S4R, (Released:2021-11-05)

参考文献数

35

被引用文献数

5

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To better understand the eco-physiological characteristics of reproduction in the coral reef small honeycomb grouper, Epinephelus merra, we investigated their spawning migration using biotelemetry, in addition to reproductive physiology analysis. Histological observations indicated that final ovarian maturation was not completed in honeycomb grouper collected from the coral reef pond (CRP), even during their spawning season. Additionally, our visual observations revealed that fish numbers decreased in the CRP after a full moon, which is thought to be their spawning time, suggesting their spawning migration. Next, we investigated the migration of honeycomb grouper during their spawning season using biotelemetry. Our investigations indicated that honeycomb grouper migrated from the inside of the CRP to the outside after a full moon, and then back to the inside again a few days later. These results strongly suggested that honeycomb grouper migrate to spawning sites located outside of the CRP, attain final ovarian maturation, and spawn after a full moon in the spawning season.

著者

Yoav LINDEMANN Gal EYAL Amatzia GENIN

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.21, no.1, pp.9-10, 2019 (Released:2019-10-11)

参考文献数

4

被引用文献数

1 3

著者

Christian WILD Tim RIXEN Celeste SÁNCHEZ-NOGUERA Agostino MERICO Carlos JIMÉNEZ Jorge CORTÉS Malik S. NAUMANN

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.17, no.1, pp.13-14, 2015 (Released:2015-07-08)

参考文献数

2

被引用文献数

4

著者

Frederic Sinniger Ritzelle L. Albelda Rian Prasetia Héloïse Rouzé Erlangga D. Sitorus Saki Harii

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

pp.G2021_S11N, (Released:2021-11-19)

参考文献数

23

被引用文献数

6

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Coral reef ecosystems extend beyond the standard SCUBA diving depth. These ecosystems found between approximately 30 and over 150 m are referred to as mesophotic coral ecosystems (MCEs). Mesophotic coral communities have already been reported from Okinawa over 50 years ago. However, since then little additional knowledge has been obtained on the distribution and diversity of mesophotic corals in the region. Here, we provide an overview of the coral communities observed at selected sites in the region around Sesoko Island. Using photo-quadrats, we surveyed coral communities and specifically the contribution of the dominant coral genera to the total coral cover between different sites at depths ranging from 30 to 80 m. We found that deep coral communities around Sesoko Island hold a high potential biodiversity and need to be taken into account into coastal management plans.

著者

Tetsuo Kuwamura

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

pp.G2020_S3R, (Released:2021-11-19)

参考文献数

84

被引用文献数

2

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This review provides a brief summary of our field research on the behavioral ecology of coral reef fishes conducted at Sesoko Station, University of the Ryukyus, Okinawa, Japan. We have continued observations and experiments on fish behavior using SCUBA or by snorkeling on the fringing reefs of Sesoko Island since 1982. The results of our four main research subjects, that is, mimicry, parental care and mating systems, bidirectional sex change, and mate choice and alternative mating tactics, all of which have been major subjects of behavioral ecology, are summarized with references and historical information. The titles and speakers of papers, presented at two international meetings organized by the author and held at the Sesoko Station in 1991 and 2004, and field studies conducted on fishes in Sesoko Island by other researchers, including graduate students from various universities, are introduced. The Sesoko Station has been providing excellent facilities for field studies of coral reef fishes and has contributed greatly to the development of the behavioral ecology of fishes.

著者

Kent Elson S. Sorgon Rene A. Abesamis

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.25, no.1, pp.7-8, 2023 (Released:2022-10-19)

参考文献数

4

被引用文献数

1

著者

Kent Elson S. SORGON Victor S. TICZON Badi R. SAMANIEGO Marion Michael A. BACABAC Jesus Gabriel C. FETIL

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.23, no.1, pp.7-8, 2021 (Released:2021-06-05)

参考文献数

4

著者

Ming-Jay HO Chao-Yang KUO Hung-Yi WU Ming-Shiou JENG Shiahn-Wern SHYUE Chaolun Allen CHEN

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.22, no.1, pp.29-30, 2020 (Released:2020-12-09)

参考文献数

4

被引用文献数

2

著者

Chao-Yang KUO Aichi CHUNG Shashank KESHAVMURTHY Ya-Yi HUANG Sung-Yin YANG Chaolun Allen CHEN

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.21, no.1, pp.11-12, 2019 (Released:2019-11-14)

参考文献数

4

被引用文献数

6

著者

Héloïse ROUZÉ Frederic SINNIGER Saki HARII

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.21, no.1, pp.1-2, 2019 (Released:2019-04-11)

参考文献数

3

被引用文献数

1

著者

Rian PRASETIA Frederic SINNIGER Saki HARII

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.19, no.1, pp.5-6, 2017 (Released:2017-08-07)

参考文献数

7

被引用文献数

3

著者

Andrew H. Baird Alasdair J. Edwards James R. Guest Saki Harii Masayuki Hatta Liam Lachs Hanaka Mera Frederic Sinniger David Abrego Or Ben-Zvi Omri Bronstein Patrick C. Cabaitan Vivian R. Cumbo Gal Eyal Lee Eyal-Shaham Bar Feldman Joana Figueiredo Jean-François Flot Mila Grinblat Andrew Heyward Michio Hidaka Mamiko Hirose Akira Iguchi Naoko Isomura Robert A. Kinzie Seiya Kitanobo Alyson Kuba Oren Levy Yossi Loya Takuma Mezaki Amin R. Mohamed Masaya Morita Satoshi Nojima Yoko Nozawa Rian Prasetia Eneour Puill-Stephan Catalina Ramirez-Portilla Hanna Rapuano Yaeli Rosenberg Yusuke Sakai Kazuhiko Sakai Tom Shlesinger Tullia I. Terraneo Irina Yakovleva Hiromi H. Yamamoto Kiyoshi Yamazato

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

pp.G2021_S10O, (Released:2021-11-19)

参考文献数

27

被引用文献数

11

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Sesoko Station, Okinawa, has been the site of many significant advances in coral reproductive research and it continues to be a preferred destination for both Japanese and international researchers. Consequently, there are decades of spawning observations, which we present and explore here with the aim of making it easier to predict when species spawn at Sesoko Station. The data include over 700 spawning observations from 87 species of reef-building hermatypic corals. Almost all spawning occurred between dusk and dawn, with most spawning activity concentrated in the 2 to 4 hours after sunset. Some phylogenetic patterns were evident: most Acropora species spawn on or around the 6th full moon after December 21st (the northern hemisphere winter solstice); spawning in common species of merulinids and Porites appears to be concentrated around the 7th full moon and spawning in the fungiids around the 8th and subsequent full moons. The night of peak spawning with respect to the night of the full moon varied considerably among years in common Acropora species, but was dependent on the calendar date of the full moon in May or June. Therefore, despite an extended spawning season of over three months and considerable variation in the calendar date of spawning in many species among years, the month and night of spawning are reasonably predictable for many species enhancing the value of Sesoko Station as a site for coral reproductive research.

著者

Masako NAKAMURA Hiroyuki YOKOCHI

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.22, no.1, pp.3-4, 2020 (Released:2020-06-18)

参考文献数

4

被引用文献数

1

著者

Shu Qin SAM Daisuke TAIRA Chin Soon Lionel NG Tai Chong TOH Loke Ming CHOU

出版者

The Japanese Coral Reef Society

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.20, no.1, pp.9-10, 2018 (Released:2018-06-14)

参考文献数

8

被引用文献数

4

著者

Naoko NAMIZAKI Hiroya YAMANO Rintaro SUZUKI Kenji OOHORI Hitoshi ONAGA Tamiko KISHIMOTO Teppei SAGAWA Yoshiko MACHIDA Shigeki YASUMURA Takanori SATOH Takashi SHIGIYA Tsuyoshi SHIBATA Megumu TSUCHIKAWA Yasuaki MIYAMOTO Kyoko HARUKAWA Koichi HIRATE Koji FURUSE Kenichi HOKOYAMA Yasushi YAMANAKA Toru WAGATSUMA

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.15, no.Supplement, pp.391-395, 2013 (Released:2014-06-25)

参考文献数

10

被引用文献数

11

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The Sango (Coral) Map Project began in 2008, an International Year of the Reef, and continued for two years. It is a monitoring program that allowed for easy participation via a web-based system that collected information on coral occurrence from various groups of people (e.g. divers, snorkelers, tourists, environmental educators, and researchers) with the aim of clarifying the current status of coral reefs in Japan. Participants simply submitted occurrences and location information with photographs of coral formations they encountered. The results are presented on the web using the Google Map API. Over the two-year period, 148 participants provided information on coral occurrence, and 367 data points were collected. Collaboration was developed with other activities including nature tours and diving programs. Data from the project have been used to validate national coral-reef distribution maps and have been published as a scientific paper. The project owes its success to the engagement with a wide range of networks and stakeholders and to the simplicity of the method. We hope that this project will be a first step towards encouraging people to participate in other monitoring programs such as ReefCheck. Citizen monitoring programs are a useful and important method for establishing collaboration between diverse stakeholders.

著者

Jun NISHIKAWA Richard FITZPATRICK James D. REIMER Robin J. BEAMAN Hiroyuki YAMAMOTO Dhugal J. LINDSAY

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.13, no.1, pp.25-26, 2011 (Released:2012-03-24)

参考文献数

3

被引用文献数

1 6 1

著者

Michael P. JANES

出版者

日本サンゴ礁学会

雑誌

Galaxea, Journal of Coral Reef Studies (ISSN:18830838)

巻号頁・発行日

vol.15, no.Supplement, pp.195-200, 2013 (Released:2014-06-25)

参考文献数

29

被引用文献数

9

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The Xeniidae are a major component of benthic coral reef communities in Lembeh, Indonesia. A two-week survey of the xeniids from this region was conducted. Scuba collections were carried out to a depth of 25 meters. A total of 48 samples were examined, encompassing a variety of species found in Lembeh Strait. Representatives of the genera Anthelia, Cespitularia, Heteroxenia, Sansibia, Sympodium, and Xenia were recorded using microscopic analysis. Visual estimates were made of the underwater abundance and distribution of these genera. Three habitats containing xeniids were identified. Sand slopes, which were limited to the genera Anthelia, and Xenia. Hard substratum patch reefs supported the greatest diversity, which included communities of Anthelia, Cespitularia, Heteroxenia, Sansibia, Sympodium, and Xenia. The genera Cespitularia, Heteroxenia and Xenia were found to colonize reef walls. Only one colony of Sansibia and one colony of Sympodium were recorded in this survey. Abundant assemblages of Xenia were found to occur at depths of 3-25 meters, primarily on sand slopes. Interestingly, most colonies of Cespitularia and Heteroxenia were observed below 10 meters on both patch reefs and reef walls.