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Mediolabrus Comicus
''Mediolabrus comicus'', known previously as ''Minidiscus comicus'', is a species of nanophytoplanktonic centric diatoms within the family Thalassiosiraceae. Its cells have diameters as small as 1.9 ''μ''m, which makes ''M.'' ''comicus'' one of the smallest known diatoms and brings it near to the theoretical lower size limit for photosynthetic eukaryotes. Taxonomy ''Mediolabrus comicus'' was originally described as ''Minidiscus comicus'', but in 2020, it was transferred based on molecular phylogenetics to a newly erected genus ''Mediolabrus'', as its type species. Morphology and ultrastructure Cells of ''M.'' ''comicus'' have diameters between 1.9 and 6.0 μm. The larger cells are discoidal with flat valve faces (ends of the Frustule, siliceous shell), while the smaller ones are spherical or even oblong. Valve margins are very narrow and marginal areolae (small regularly repeated pores) terminate close to the valve edge. There are 6–8 areolae per 1&nbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanophytoplankton
Nanophytoplankton are particularly small phytoplankton with sizes between 2 and 20 μm. They are the autotrophic part of nanoplankton. Like other phytoplankton, nanophytoplankton are microscopic organisms that obtain energy through the process of photosynthesis and must therefore live in the upper sunlit layer of ocean or other bodies of water. These microscopic free-floating organisms, including algae, and cyanobacteria, fix large amounts of carbon which would otherwise be released as carbon dioxide. The term nanophytoplankton is derived from the far more widely used term nannoplankton/nanoplankton. Ecosystem role Phytoplankton form the beginning of the food chain for aquatic animals. Zooplankton and krill feed on nanophytoplankton, and are then eaten by whales, seals, birds, fish, squid, and other organisms. Life cycle Populations are low in the winter, when nutrients are high, and then the populations increase as the nanophytoplankton consume nearly all of the nutrient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokyo
Tokyo, officially the Tokyo Metropolis, is the capital of Japan, capital and List of cities in Japan, most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is List of largest cities, one of the most populous urban areas in the world. The Greater Tokyo Area, which includes Tokyo and parts of six neighboring Prefectures of Japan, prefectures, is the most populous metropolitan area in the world, with 41 million residents . Lying at the head of Tokyo Bay, Tokyo is part of the Kantō region, on the central coast of Honshu, Japan's largest island. It is Japan's economic center and the seat of the Government of Japan, Japanese government and the Emperor of Japan. The Tokyo Metropolitan Government administers Tokyo's central Special wards of Tokyo, 23 special wards, which formerly made up Tokyo City; various commuter towns and suburbs in Western Tokyo, its western area; and two outlying island chains, the Tokyo Islands. Although most of the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalassiosirales
''Thalassiosirales'' is an order of centric diatoms. As of 2015, the order contained 471 species. Species in the order Thalassiosirales are common in brackish, nearshore, and open-ocean habitats, with approximately the same number of freshwater and marine species. The Thalassiosirales species ''Thalassiosira pseudonana'' was chosen as the first eukaryotic marine phytoplankton for whole genome sequencing Whole genome sequencing (WGS), also known as full genome sequencing or just genome sequencing, is the process of determining the entirety of the DNA sequence of an organism's genome at a single time. This entails sequencing all of an organism's .... ''T. pseudonana'' was selected for this study because it is a model for diatom physiology studies, belongs to a genus widely distributed throughout the world's oceans, and has a relatively small genome at 34 mega base pairs. Scientists are researching on diatom light absorption, using the marine diatom ''Thalassiosira''. Ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
