The announcement of the sequencing of the genome of the sea urchin Strongylocentrotus purpuratus is the latest glowing chapter in the long history of contributions from sea urchin researchers to fundamental principles of cell biology, developmental biology, and gene regulation.
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Eutacticity in Sea Urchin Evolution [PDF]
An eutactic star, in a n-dimensional space, is a set of N vectors which can be viewed as the projection of N orthogonal vectors in a N-dimensional space. By adequately associating a star of vectors to a particular sea urchin we propose that a measure of the eutacticity of the star constitutes a measure of the regularity of the sea urchin. Then we study
López-Sauceda, J., Aragón, J. L.
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Sea Urchin (Echinoidea) Distribution and Abundance in the Intertidal Zone of Bengkayang Regency
Sea urchins is the member of Echinoidea. This species can be found in tropical marine water to the poles. The study aimed to know the types, the abundance and spread of sea urchins in Bengkayang Regency. The research, used the transect method.
Andi Ristanto +2 more
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Sea urchins mediate the availability of kelp detritus to benthic consumers
Detritus can fundamentally shape and sustain food webs, and shredders can facilitate its availability. Most of the biomass of the highly productive giant kelp, Macrocystis pyrifera, becomes detritus that is exported or falls to the seafloor as litter. We
Christie E. Yorke +2 more
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How to generate pentagonal symmetry using Turing systems [PDF]
We explore numerically the formation of Turing patterns in a confined circular domain with small aspect ratio. Our results show that stable fivefold patterns are formed over a well defined range of disk sizes, offering a possible mechanism for inducing ...
Aragón, J. L. +4 more
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Density-dependent feedbacks, hysteresis, and demography of overgrazing sea urchins.
Sea urchin grazing can result in regime shift from productive kelp beds to sea urchin barren grounds that represent an alternative and stable reef state.
Scott D. Ling +3 more
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Comparative Raman spectroscopy study of the coelomic fluid of grazing sea urchins and their native seawater: prospect for a potential indicator of environmental aggression [PDF]
Sea urchins have limited ability to move, and they use the watervascular circulation system to pump surrounding sea water in order to set body parts in motion.
F. NEKVAPIL +2 more
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Poor growth and disease transmission of small sea urchins Strongylocentrotus intermedius in summer greatly hamper the production efficiency of the longline culture.
Fangyuan Hu +9 more
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The challenge of managing the commercial harvesting of the sea urchin Paracentrotus lividus: advanced approaches are required [PDF]
Sea urchins act as a keystone herbivore in marine coastal ecosystems, regulating macrophyte density, which offers refuge for multiple species. In the Mediterranean Sea, both the sea urchin Paracentrotus lividus and fish preying on it are highly valuable ...
Simone Farina +11 more
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The Protein Precursors of Peptides That Affect the Mechanics of Connective Tissue and/or Muscle in the Echinoderm Apostichopus japonicus [PDF]
PMCID: PMC3432112This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
Maurice R. Elphick, Paul H. Taghert
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