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Science of the Total Environment, 2019 The effects of ocean acidification, a major anthropogenic impact on marine life, have been mainly investigated in laboratory/mesocosm experiments.
Oriana Migliaccio +2 more
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Microplastics in specific tissues of wild sea urchins along the coastal areas of northern China.
Science of the Total Environment, 2020Sea urchins serve as an essential niche for benthic ecosystems and are valuable seafood for humans. However, little is known about the microplastics (MPs) accumulation in sea urchins.
Zhihua Feng +7 more
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How sea urchins face microplastics: Uptake, tissue distribution and immune system response.
Environmental Pollution, 2020Plastic pollution represents one of the major threats to the marine environment. A wide range of marine organisms has been shown to ingest microplastics due to their small dimensions (less than 1 mm).
Carola Murano +6 more
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Developments in Aquaculture and Fisheries Science, 2020
β-Echinenone, isolated as a major carotenoid in the gonads of the edible sea urchins, is oxidatively formed from β-carotene via β-isocryptoxanthin. It affects gonad color, reproduction, development and phagocytosis in the sea urchin. Xanthophylls such as
M. Kelly, R. C. Symonds
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β-Echinenone, isolated as a major carotenoid in the gonads of the edible sea urchins, is oxidatively formed from β-carotene via β-isocryptoxanthin. It affects gonad color, reproduction, development and phagocytosis in the sea urchin. Xanthophylls such as
M. Kelly, R. C. Symonds
semanticscholar +1 more source
, 2020
Uptake of anthropogenic carbon dioxide (CO2) is changing seawater chemistry (ocean acidification) causing a reduction in seawater pH and saturation state (Ω) of the CaCO3 minerals needed for calcification and increased organism hypercapnia (pCO2).
M. Byrne, J. Hernández
semanticscholar +1 more source
Uptake of anthropogenic carbon dioxide (CO2) is changing seawater chemistry (ocean acidification) causing a reduction in seawater pH and saturation state (Ω) of the CaCO3 minerals needed for calcification and increased organism hypercapnia (pCO2).
M. Byrne, J. Hernández
semanticscholar +1 more source
Regular sea urchins as drivers of shallow benthic marine community structure
, 2020Regular sea urchins may be the single most important consumer affecting shallow marine communities worldwide. Vast sea grass beds and kelp forests have been denuded by foraging aggregations of sea urchins resulting in loss of habitat, food, and changes ...
R. Steneck
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Biological Reviews, 1951
Summaryi. The head of the sea‐urchin spermatozoon is pear‐shaped and axially symmetrical. The sub‐microscopic morphology of the middle piece has not been investigated, but the tail, which terminates in an axial fibre, probably contains spiral or coiled structures, as in mammalian spermatozoa.2.
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Summaryi. The head of the sea‐urchin spermatozoon is pear‐shaped and axially symmetrical. The sub‐microscopic morphology of the middle piece has not been investigated, but the tail, which terminates in an axial fibre, probably contains spiral or coiled structures, as in mammalian spermatozoa.2.
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Clinical Toxicology, 2005
A 25-year-old female was walking along a shallow tropical reef when she felt a sharp pain in her right great toe. Upon exiting the water, she noted multiple dark spines protruding from the foot.
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A 25-year-old female was walking along a shallow tropical reef when she felt a sharp pain in her right great toe. Upon exiting the water, she noted multiple dark spines protruding from the foot.
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2004
Publisher Summary The chapter describes the structures and functions of sea urchin spermatozoa. Methods for the isolation of different parts of the sea urchin sperm are discussed. Sea urchin sperm are specialized for five functions: (1) oxidative phosphorylation to produce ATP, (2) flagellar motility, (3) the acrosome reaction, (4) binding to the egg,
Victor D, Vacquier, Noritaka, Hirohashi
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Publisher Summary The chapter describes the structures and functions of sea urchin spermatozoa. Methods for the isolation of different parts of the sea urchin sperm are discussed. Sea urchin sperm are specialized for five functions: (1) oxidative phosphorylation to produce ATP, (2) flagellar motility, (3) the acrosome reaction, (4) binding to the egg,
Victor D, Vacquier, Noritaka, Hirohashi
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Sea urchin DNA methyltransferases
Cell Biophysics, 1989DNA methyltransferase activities have been partially purified from unfertilized eggs and blastula nuclei of sea urchin embryos. Comparative studies, using different DNAs as substrates, show that the two preparations are most active on hemimethylated and single-strand DNA, but they methylate, though at a lower rate, also on double-strand DNA.
Tosi L +5 more
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