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9 a.m. - 4 p.m.
Phone: (843) 766-6635
Main Library
9 a.m. - 6 p.m.
Phone: (843) 805-6930
Folly Beach Library
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Phone: (843) 588-2001
John L. Dart Library
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St. Paul's/Hollywood Library
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Edgar Allan Poe/Sullivan's Island Library
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John's Island Library
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Wando Mount Pleasant Library
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Symmetry breaking in the embryonic skin triggers directional and sequential plumage patterning.
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- Author(s): Bailleul, Richard; Curantz, Camille; Desmarquet-Trin Dinh, Carole; Hidalgo, Magdalena; Touboul, Jonathan; Manceau, Marie
- Source:
PLoS Biology; 10/1/2019, Vol. 17 Issue 10, p1-27, 27p, 5 Diagrams, 1 Graph- Subject Terms:
- Source:
- Additional Information
- Abstract: The development of an organism involves the formation of patterns from initially homogeneous surfaces in a reproducible manner. Simulations of various theoretical models recapitulate final states of natural patterns, yet drawing testable hypotheses from those often remains difficult. Consequently, little is known about pattern-forming events. Here, we surveyed plumage patterns and their emergence in Galliformes, ratites, passerines, and penguins, together representing the three major taxa of the avian phylogeny, and built a unified model that not only reproduces final patterns but also intrinsically generates shared and varying directionality, sequence, and duration of patterning. We used in vivo and ex vivo experiments to test its parameter-based predictions. We showed that directional and sequential pattern progression depends on a species-specific prepattern: an initial break in surface symmetry launches a travelling front of sharply defined, oriented domains with self-organising capacity. This front propagates through the timely transfer of increased cell density mediated by cell proliferation, which controls overall patterning duration. These results show that universal mechanisms combining prepatterning and self-organisation govern the timely emergence of the plumage pattern in birds. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of PLoS Biology is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
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