Results 101 to 110 of about 14,394 (155)
Investigating intraspecific variability in the biological responses of sea urchins (Paracentrotus lividus) to seawater acidification. [PDF]
Environ Sci Pollut Res IntAsnicar D +6 more
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Taxa-dependent temporal trends in the abundance and size of sea urchins in subtropical eastern Australia. [PDF]
Ecol EvolMcLaren E +4 more
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Deciphering the Hearts: Geometric Morphometrics Reveals Shape Variation in Abatus Sea Urchins across Subantarctic and Antarctic Seas. [PDF]
Animals (Basel)Moya F +6 more
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Cold storage and cryopreservation methods for spermatozoa of the sea urchins Lytechinus pictus and Strongylocentrotus purpuratus. [PDF]
Dev DynVacquier VD, Hamdoun A.
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Herbivorous sea urchins (Echinometra mathaei) support resilience on overfished and sedimented tropical reefs. [PDF]
Sci RepFong CR +5 more
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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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