日本産海藻の赤血球に対する溶血作用と保護作用

Hemolytic and protective activities of crude extracts from 9 seaweed (2 green algae, 2 brown algae and 6 red algae) to sheep red blood cell were evaluated by the absorbance at 541nm and 576 nm on the spectrophotometric analysis.All the seaweed which investigated showed hemolysis activities. Most of all seaweed showed activities that were density-dependent. In the case of Eisenia bicyclis, Undaria pinnatifida and Chorda filum, we detected the hemolysis activities were decrease once, and revived at the low concentration by adhesive polysaccharides

神奈川県江ノ島(基準産地)におけるコトジツノマタの季節的消長

東京海洋大学修士学位論文 平成21年度(2009) 海洋生命科学 第854号指導教員: 藤田大介全文公表年月日: 2015-06-15東京海洋大学200

Floristic and phenological study of marine macroalgae in the vicinity of Takehara, Hiroshima Prefecture on the western central coasts of the Seto Inland Sea of Japan

The species composition and seasonal occurrence of the marine macroalgae on the central coast of Hiroshima Prefecture, specifically in the vicinity of Takehara, in the Seto Inland Sea of Japan were studied. A total of 143 species was identified including 18 species of Chlorophyceae, 43 species of Phaeophyceae, and 82 species of Rhodophyceae. Most species were seasonal and more abundant from February to July, when more than 60 species occurred in each month. March had 79 species, the highest species number in a single month. Ulva pertusa, Codium fragile, Ishige okamurae, Ecklonia kurome, Sargassum fusiforme, S. thunbergii, Corallina pilulifera, and Chondrus giganteus were found throughout the year. Of 143 species, Dictyota linearis, Sporochnus radiciformis, and Martensia fragilis were warm temperate species that reported in the Bungo-channel regions, while only Dictyota linearis can be found in the southern islands of subtropical Japan. The rest of the species were temperate species. There are 104 species commonly found on the coasts of Hiroshima Prefecture, representing the major algal communities along the coast of the Prefecture

日本産海藻に含まれる多糖類の溶血阻害作用

Hemolytic activities of crude extracts from 10 seaweed ( 2 green algae, 2 brown algae and 6 red algae ) were evaluated by the absorbance at 541nm on the spectrophotometric analysis. The activities of Eisenia bicyclis and Undaria pinnatifida showed without density-dependent. Quantitative Analysis of Polysaccharides in algae by phenol-sulfuric acid reaction ware carried out and revealed the inhibition of hemolysis activity ware increased by the quantity of Polysaccharides although not proportional

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 1 – The tsunami event, the project overview, and the red algae

To determine the invasion threat to the NE Pacific of marine algae arriving on Japanese debris from the 2011 Great Tōhoku Earthquake and Tsunami, my colleagues and I took up the task of identifying the algal species on 42 of the most heavily fouled debris items that landed on the shores of Oregon and Washington between June 2012 and July 2016. Using both morphological and molecular methods, we identified 84 marine algal and cyanobacterial species and species complexes on these items and sequenced 51. Since many of these species are not well-described in the literature, a morphological account of the actual specimens has been prepared to assist in the detection of future invasions by these species in the NE Pacific. Part 1 provides an introduction to the study and pictures and descriptions of 29 red algal species and 1 red algal unknown that we discovered. Part 2 covers the brown algae, and Part 3, the green algae and cyanobacteria. In addition to this morphological documentation series, the reader is referred to the 2 other papers in our study cited on page 2 of the text.Keywords: marine algae, North Pacific Ocean, introduced marine species, red algae, Northeast Pacific Ocean, tsunami debri

Invasion threat of benthic marine algae arriving on Japanese tsunami marine debris in Oregon and Washington, USA

Recognisable debris from the Great Tōhoku Earthquake and Tsunami of March 2011 began arriving on the coasts of Oregon and Washington, USA in June 2012. This debris often carried fouling Japanese marine algae, and there was concern that these species might recruit and invade northeast Pacific shores. From June 2012 to July 2016, we examined 42 heavily fouled debris items and, using both morphology and sequencing data, identified 84 species and varieties of marine algae and cyanobacteria on the debris. Many of these taxa had features that indicated a high invasion potential: 83% were reproductive, 48% were ephemeral, and 75% were opportunistic forms. Naturally widespread species and 13 well-known global invaders were present. However, 61% of the species or their genetic variants had been reported from the northeast Pacific before the tsunami. Although the invasion risk was still deemed high, preventative debris removal appears to have been effective in averting many potential introductions.Keywords: Fouling, Invasive features, Japan, Marine algal diversity, Northeast Pacific, Tsunami debri

日本産海藻に含まれる多糖類の赤血球保護作用

Hemolytic activities of crude extracts from 5 seaweed (1 green algae, 1 brown algae and 3 red algae) were evaluated by the absorbance at 541nm and 576nm on the spectrophotometric analysis. A crude product extract with organic solvents from seaweed showed high hemolysis activity than the homogenized solution from seaweed by ultrasonic homogenizer. Some homogenized solutions that contain polysaccharides showed inhibition of hemolysis activities