A5084424652- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
- Marine and fisheries research
- Ichthyology and Marine Biology
- Marine Biology and Ecology Research
- Crustacean biology and ecology
- Underwater Vehicles and Communication Systems
- Coastal wetland ecosystem dynamics
- Energy Efficient Wireless Sensor Networks
- Fish biology, ecology, and behavior
- Cephalopods and Marine Biology
- Aquaculture Nutrition and Growth
- Water Quality Monitoring Technologies
- Microbial Community Ecology and Physiology
- Reproductive biology and impacts on aquatic species
- Innovative Teaching Methods
- Retinoids in leukemia and cellular processes
- Problem and Project Based Learning
- Marine Sponges and Natural Products
- Case Reports on Hematomas
- Marine Invertebrate Physiology and Ecology
- Muscle and Compartmental Disorders
- Advanced biosensing and bioanalysis techniques
- Engineering and Environmental Studies
- Plant and Fungal Species Descriptions
National Institute of Technology Okinawa College
2014-2024
Saga University
2007-2012
University of the Ryukyus
2007-2008
Jikei University School of Medicine
2007
University of the Ryukyus University Hospital
2006
Tohoku University
2001-2003
Abstract The discovery of multi-species synchronous spawning scleractinian corals on the Great Barrier Reef in 1980s stimulated an extraordinary effort to document times other parts globe. Unfortunately, most these data remain unpublished which limits our understanding regional and global reproductive patterns. Coral Spawning Database (CSD) collates much disparate into a single place. CSD includes 6178 observations (3085 were unpublished) time or day for over 300 species 61 genera from 101...
Natural hybridization of corals in the Indo-Pacific has been considered rather rare. However, field studies have observed many with intermediate interspecific or unusual morphologies. Given that existence F1 hybrids morphologies proven Caribbean, may also inhabit and occur more frequently than expected. In this study, we focused on two morphologically different species, Acropora florida A. intermedia, performed crossing experiments at Akajima Island, Japan. Results showed these species could...
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 international researchers. Consequently, there are decades spawning observations, which we present explore here with aim making easier predict when species spawn at Station. The data include over 700 observations from 87 reef-building hermatypic corals. Almost all occurred between dusk dawn, most activity concentrated 2 4...
We have been developing a wireless sensor network system to support coral ecological survey activities. This paper studies the required functions of node for gathering information on underwater environmental conditions. For this purpose, prototype is developed clarify necessary through practical experiment. In paper, hardware configuration latest described. The design was based our previous experiments and comments reef researchers. conducted field observe reefs along Okinawa coast in Japan...
Multi-specific synchronous spawning risks both sperm limitation, which reduces fertilization success, and hybridization with other species. If available of conspecifics are limited, heterospecific could be an alternative. Some species the reef-building coral Acropora produce hybrid offspring in vitro , therefore between such does sometimes occur nature. Here, we report that interbreeding florida A. intermedia preferentially bred at optimal gamete concentrations (10 6 cells ml −1 ), but when...
Abstract This study aimed to elucidate the physiological processes of oogenesis in Acropora tenuis . Genes/proteins related were investigated: Vasa, a germ cell marker, vitellogenin (VG), major yolk protein precursor, and its receptor (LDLR). Coral branches collected monthly from coral reefs around Sesoko Island (Okinawa, Japan) for histological observation by situ hybridisation (ISH) Vasa ( AtVasa ) Low Density Lipoprotein Receptor AtLDLR genes immunohistochemistry (IHC) AtVG....
Background Acute promyelocytic leukemia (APL) is a malignant subtype of acute myeloid caused by the PML‐retinoic acid receptor (RAR)α fusion gene. APL may be discovered in adulthood and diagnosed after spontaneous gingival bleeding or difficulty hemostasis oral surgery such as tooth extraction. However, extremely rare children. Methods Results A 1‐year‐old boy presented with mass on mentum mandible. The marked periosteal reaction was seen CT MRI, leading to strong suspicion bone‐derived...
Abstract Most corals undergo spawning after a particular moon phase, but how moon-related is endogenously regulated in remains unknown. The objective of the present study was to evaluate whether dopamine (DA) affects Acropora tenuis . When pieces four A. colonies were reared under natural photoperiod and water temperature, observed predicted phase. After exposure containing DA at 0.1 μM, same only released 5 10 bundles. Co-treatment with pimozide (D1 D2 receptors antagonist), not domperidone...
This paper describes the underwater data collection utilizing stationary sensor node and movable node. We consider applying system to investigate conditions of marine ecosystem around coral reef at Okinawa, Japan. The framework fundamental design our proposed information gathering under development are introduced. It is also reported prototypes sensory Basic examinations such prototype environment described. experimental results image from via wireless local area network communication. Our...
Worldwide decline has been observed in coral populations due to environmental changes at both regional and global levels. Since corals have a typical metapopulation structure, the recovery of severely disturbed local depends on larval recruitment from outside region. Therefore, connectivity among may play key role disturbance/ dynamics populations. On basis simulation surface currents, derived ocean we hypothesized that genetic is weak between northern southern regions Sekisei Reef, Japan....
Abstract Coral populations are in decline due to environmental changes and biological attacks by predators infectious diseases. Here, we report a localized bloom of the benthic filamentous cyanobacterium Moorea bouillonii (formerly Lyngbya ) observed exclusively on gorgonian (sea fan) coral Annella reticulata at around 20 m depth Japan. The degree infection has reached 26% among different sizes colonies. Thick continuous growth may be sustained partly symbiotic alpheid shrimp, which affix...
We examined gametogenesis and the periodicity of planula release in brooding coral Acropora (Isopora) brueggemanni (Brook, 1893) on Akajima Island, Okinawa, Japan. captured moment when A. would be process self-fertilization. Whole colonies this species were cultured separately or together with other plastic containers. observed no apparent collected colonies. A few planulae released intermittently during observation period, regardless whether individually Serial paraffin sections showed...
The Kuroshio Current (KC) is one of the fastest water currents in world, running through western boundary North Pacific Ocean. KC strongly influences regional hydroclimate by creating temperature, salinity, and pH gradients from tropical to subtropical temperate zones, including regions with rich coral reef habitats. Microbial community composition corals influenced various environmental factors, pH, geographical location. However, date, it unclear how coral-associated microbial communities...
Abstract Reproductive success via sexual reproduction is a key factor in restoring and maintaining populations of branching corals. It crucial to consider the relationship between genetic similarity reproductive when acroporids because these corals have characteristics such as fragmentation localized recruitment. In this study, we examined (as measured by amplified fragment length polymorphisms) Acropora intermedia 2009 2010, at Okinawa, southern Japan. There was significant negative...
Species identification is key for coral reef conservation and restoration. Recent molecular-morphological studies have indicated the existence of many cryptic species. Coelastrea aspera (Verrill, 1866) a zooxanthellate scleractinian that widely distributed in Indo-Pacific. In Japan, this species from subtropical region to high-latitudinal non-reef region. Previous reported C. colonies release egg-sperm bundles (bundle type), whereas those eggs sperm separately (non-bundle type) planula...