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  • 1
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    The periodic coloration in birds forms through a prepattern of somite origin (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-09-21
    Description: The periodic stripes and spots that often adorn animals’ coats have been largely viewed as self-organizing patterns, forming through dynamics such as Turing’s reaction-diffusion within the developing skin. Whether preexisting positional information also contributes to the periodicity and orientation of these patterns has, however, remained unclear. We used natural variation in colored stripes of juvenile galliform birds to show that stripes form in a two-step process. Autonomous signaling from the somite sets stripe position by forming a composite prepattern marked by the expression profile of agouti . Subsequently, agouti regulates stripe width through dose-dependent control of local pigment production. These results reveal that early developmental landmarks can shape periodic patterns upstream of late local dynamics, and thus constrain their evolution.
    Keywords: Development, Online Only
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    GPS tracking of foraging albatrosses (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weimerskirch, Henri -- Bonadonna, Francesco -- Bailleul, Frederic -- Mabille, Geraldine -- Dell'Omo, Giacomo -- Lipp, Hans-Peter -- New York, N.Y. -- Science. 2002 Feb 15;295(5558):1259.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre d'Etudes Biologiques de Chize, Centre National de la Recherche Scientifique, 79360 Villiers en Bois, France. henriw@cebc.cnrs.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11847332" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Appetitive Behavior ; Birds/*physiology ; Female ; *Flight, Animal ; Male ; Seasons ; Telemetry ; Wind
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Current-induced spin-wave Doppler shift (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-18
    Description: Spin transfer appears to be a promising tool for improving spintronics devices. Experiments that quantitatively access the magnitude of the spin transfer are required for a fundamental understanding of this phenomenon. By inductively measuring spin waves propagating along a permalloy strip subjected to a large electrical current, we observed a current-induced spin wave Doppler shift that we relate to the adiabatic spin transfer torque. Because spin waves provide a well-defined system for performing spin transfer, we anticipate that they could be used as an accurate probe of spin-polarized transport in various itinerant ferromagnets.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vlaminck, Vincent -- Bailleul, Matthieu -- New York, N.Y. -- Science. 2008 Oct 17;322(5900):410-3. doi: 10.1126/science.1162843.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Physique et Chimie des Materiaux de Strasbourg, UMR 7504 CNRS-Universite Louis Pasteur, 23 Rue du Loess, 67034 Strasbourg Cedex 2, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18927387" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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