Meeting Abstract 22-2  Monday, Jan. 4 10:30  Wnt signaling and cell fate specification in a grand-parental stem cell lineage of the leech WEISBLAT, D.A.*; CHO, S.J.; WATSON, Q.D.; YOO, S.; Univ. of Calif., Berkeley; Chungbuk National Univ.; Univ. of Calif., Berkeley; Univ. of Calif., Berkeley weisblat@berkeley.edu Elongation via a posterior growth zone (PGZ) is a common feature […]

Meeting Abstract 22-5  Monday, Jan. 4 11:15  When barbs get their curves: Modeling the development of barb curvature in feathers FEO, TJ*; SIMON, E; PRUM, RO; Smithsonian Institution, NMNH; Yale University; Yale University FeoT@si.edu Feathers exhibit an extraordinary diversity of shapes and sizes, which are used by birds to accomplish a diverse set of functions. Pennaceous feathers […]

Meeting Abstract 22-3  Monday, Jan. 4 10:45  Plasma and tail regeneration in tadpoles Xenopus laevis. Do reactive oxygen species enhance the process? RIVIE, A./T.*; MENON, J.; MARTUS, K.; William Paterson University of New Jersey; William Paterson University of New Jersey; William Paterson University of New Jersey riviea@wpunj.edu In the last decade, advances in atmospheric pressure plasma technology […]

Meeting Abstract 22-4  Monday, Jan. 4 11:00  Insulin-like Growth Factor Expression in Annual Killifish Embryos WOLL, S.C.*; PODRABSKY, J.E.; Portland State University, Portland; Portland State University, Portland scwoll@pdx.edu http://www.pdx.edu/podrabsky-lab/ Cellular proliferation during multicellular development is a highly regulated process that relies on different signaling factors being produced at the proper time, in the proper concentrations, and the […]

Meeting Abstract 22-7  Monday, Jan. 4 11:45  Immigrant choanocytes reveal multiple origins of choanocytes in sponges KAHN, A.S.*; LEYS, S.P.; University of Alberta, Edmonton, Canada; University of Alberta, Edmonton, Canada kahn@ualberta.ca Choanocytes are the iconic feeding cells in sponges and are one of their most well studied cell types, yet surprisingly little is known about how they […]

Meeting Abstract 22-1  Monday, Jan. 4 10:15  Genomics of Hydractinia: A Cnidarian Model for Regeneration, Allorecognition, and Developmental Biology SCHNITZLER, CE*; NGUYEN, AD; KLASFELD, SJ; BOND, SR; PLICKERT, G; BUSS, L; WOLFSBERG, TG; MULLIKIN, JC; NICOTRA, ML; CARTWRIGHT, P; FRANK, U; BAXEVANIS, AD; NHGRI, NIH; NHGRI, NIH; NHGRI, NIH; NHGRI, NIH; U of Cologne; Yale U; NHGRI, […]

Meeting Abstract 22-6  Monday, Jan. 4 11:30  Chitin distribution in the anemone Nematostella vectensis, a species lacking hard skeletal structures VANDEPAS, LE*; AMEMIEA, CT; University of Washington; University of Washington, Benroya Research Institute lvandepa@uw.edu Chitin is an abundant biopolymer comprised of repeating N-acetylglucosamine molecules which is used in building hard structures such as arthropod exoskeletons, annelid chaetae, […]

Meeting Abstract 21-6  Monday, Jan. 4 11:15  The virtual endocranium of the basal-most phytosaur Wannia scurriensis LESSNER, E.J.*; STOCKER, M.R.; Virginia Tech; Virginia Tech stockerm@vt.edu With increased use of virtual methods, large amounts of archosauriform endocranial data have been collected, focused on body size evolution, nerve pathways, and sensory abilities. However, much of that has focused on […]

Meeting Abstract 21-2  Monday, Jan. 4 10:15  The ecological physiology of the Cambrian ‘explosion’ and Earth’s second oxygen revolution SPERLING, EA; Stanford University esper@stanford.edu Living animals display a variety of morphological, physiological and biochemical characters that enable them to live in low oxygen environments. These features and the organisms that have evolved them are distributed in a […]

Meeting Abstract 21-5  Monday, Jan. 4 11:00  The Silurian problematic fossil Rutgersella as another post-Ediacaran vendobiont RETALLACK, G.J.; University of Oregon gregr@uoregon.edu http://blogs.uoregon.edu/gregr/ Rutgersella is a problematic fossil from the early Silurian (Llandovery) Shawangunk Formation of New Jersey, at first interpreted as a jellyfish comparable with Ediacaran fossils such as Dickinsonia. Three proposed species of Rutgersella from […]