A5077076495- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Coastal and Marine Management
- Coastal wetland ecosystem dynamics
- Marine and coastal ecosystems
- Coral and Marine Ecosystems Studies
- Ichthyology and Marine Biology
- Parasite Biology and Host Interactions
- Seaweed-derived Bioactive Compounds
- Ecology and Conservation Studies
- Echinoderm biology and ecology
- Marine and fisheries research
- Geology and Paleoclimatology Research
- Flowering Plant Growth and Cultivation
- Marine Ecology and Invasive Species
- Bird parasitology and diseases
- Fish Biology and Ecology Studies
- Helminth infection and control
- Marine and Coastal Ecosystems
- Genetic diversity and population structure
- Turfgrass Adaptation and Management
- Marine Bivalve and Aquaculture Studies
- Fern and Epiphyte Biology
- Marine Biology and Environmental Chemistry
- Information Systems Theories and Implementation
Mie University
2015-2024
Meguro Parasitological Museum
2021
The University of Tokyo
2014-2016
Tokyo University of Science
2016
Nihon University
2010
SUMMARY “ Monitoring Sites 1000 ” – Japan's long‐term monitoring survey was established in 2003, based on the Japanese Government policy for conservation of biodiversity. Ecological surveys have been conducted various types ecosystems at approximately sites Japan 15 years now and are planned to be carried out 100 years. Since 2008, seaweed communities had monitored six sites, featuring kelp (e.g. Saccharina Ecklonia ; Laminariales) Sargassum (Fucales) subarctic temperate regions Japan....
Photosynthetic activities of submerged seaweeds before and after drying were measured in eighteen species collected from different vertical positions a Pacific shore at Shimoda City Japan. The desiccated until the cellular water levels equilibrated with air chamber under various humidities 10 °C. Relative contents all drastically decreased as potentials reduced 0 to −14MPa gradually range −14 −158MPa. Porphyra dentata , which is an upper intertidal species, recovered photosynthetic activity...
SUMMARY Gametophytes of two Undaria species, U. pinnatifida and undarioides (Laminariales, Phaeophyceae), were studied to determine their water temperature requirements in order understand different distributions Mie Prefecture, Japan. The optimal for growth was 20°C gametophytes both the upper critical also same species at 28°C. Therefore, temperatures are not main factors determining distribution. maturation approximately 10–15°C, whereas it closer 20–21°C undarioides, a difference...
This study examines the effects of sea urchin Diadema setosum on algal composition, coverage and biomass barren ground. In cage experiments, D. density were examined at 5 levels over range 0–8 ind. m−2. Algal number species, densities lengths Sargassum spp. experimental blocks in each measured monthly. without setosum, higher than cages with setosum. For 1 m−2 higher, decreased observed. a 2 had negative effect species numbers. Consequently, algae could grow when was fewer revealed that...
A long-spined sea urchin Diadema-sp reported from Japanese waters was genetically distinct all known Diadema species, but it remained undescribed. Extensive field surveys in Japan with molecular identification performed the present study determined five phenotypes (I to V) according presence and/or shape of a white streak and blue iridophore lines naked space interambulacral area. All were setosum (Leske, 1778) savignyi (Audouin, 1829), which major type (I) corresponded clarki Ikeda, 1939...
SUMMARY The relative growth rate of young sporophytes Undaria pinnatifida (Harvey) Suringar and undarioides (Yendo) Okamura was examined in order to understand the difference distribution these two species around coast Japan. The optimal temperature for both similar at 20°C upper critical also similar, 27°C U. 26°C undarioides. Therefore, temperatures are not main factors determining each species. Next, lower were examined. For pinnatifida, limit less than 5°C while those it 15°C. Thus,...
SUMMARY Seasonal changes in the contents of two photosynthates, namely, mannitol and laminaran, were investigated Ecklonia cava Kjellman with reference to its maturation. The samples collected from a depth 8 m Nishiki Bay, central Japan. laminaran bladelets measured. We also determined content these photosynthates occupying different positions on frond sorus non‐sorus portions bladelets. maturation sori initiated July peaked October. was low winter; this coincided active formation new...
Three species of Pseudodactylogyrus Gusev, 1965 (Monogenea: Pseudodactylogyridae) were collected from the gills Anguilla reinhardtii Steindachner and A. australis Richardson several localities in Australia eels imported to Japan Australia. gusevi sp. n. (type host) Queensland, is most similar P. bini (Kikuchi, 1929), but can be differentiated by shorter male copulatory tube, heavy sclerotisation vaginal tube presence a small projection supplementary piece hamulus. rohdei anguillae (Yin et...
SUMMARY Lithophyllum is a cosmopolitan coralline algal genus with 12 species currently recognized in Japan based on modern morpho‐anatomical taxonomic concepts primarily characterized by having uniporate tetrasporangial and bisporangial conceptacles, the presence of secondary pit‐connections between cells adjacent filaments dimerous thallus construction single basal layer predominantly non‐palisade cells. In present study, we describe nagaokaense sp. nov. combination molecular data specimens...
Abstract The advent of molecular technologies allow for identification organisms that were previously challenging or not possible. Conventional polymerase chain reaction analyses a segment the small subunit ribosomal RNA gene from trypanorhynch plerocerci obtained cultured and wild caught amberjacks, Seriola dumerili , rivoliana family Carangidae Hawai‘i Japan found to be 100% identical, indicating cestodes are same species, Protogrillotia zerbiae . prevalence in musculature wild‐caught S....
Abstract Genetic structure analyses have yielded some examples of inconsistencies between genetic and morphological information. Here, eleven nuclear microsatellite markers mitochondrial haplotypes were used to examine the gene flow among Japanese Undaria pinnatifida populations congeneric species U. undarioides peterseniana . was subdivided into four “Groups” based on Bayesian clustering analysis, Neighbor-net analysis Principal coordinate (PCoA). samples formed a unique Group. In contrast,...