Meeting Abstract 70.7  Monday, Jan. 6 09:30  A Conflict between Hatching and Survival in a Halophilic Fairy Shrimp (Crustacea: Anostraca) MAUSBACH, W/E*; DZIALOWSKI, A/R; Oklahoma State University; Oklahoma State University bill.mausbach@okstate.edu Branchiopods are well known for their dormant eggs and the specific cues required to break dormancy (temperature, dissolved oxygen, light, or water chemistry). These cues are […]

Meeting Abstract 70.6  Tuesday, Jan. 6 09:15  Wnt signaling in the hemichordate Saccoglossus kowalevskii FRITZENWANKER, J. H.*; DARRAS, S.; LOWE, C. J.; Hopkins Marine Station of Stanford University; Institut de Biologie du Développement de Marseille-Luminy; Hopkins Marine Station of Stanford University Jensf@stanford.edu The Wnt signaling pathway is a key regulator of body plan organization and axis formation […]

Meeting Abstract 70.1  Tuesday, Jan. 6 08:00  Using sponges as a model to study the evolution of the Wnt/beta-catenin signaling pathway SCHIPPERS, KJ*; NICHOLS, SA; University of Denver; University of Denver klaske.schippers@gmail.com The discovery of conserved homologs of the Wnt/beta-catenin pathway in sponges (one of the earliest branching metazoan lineages) raised questions about whether a functional Wnt/beta-catenin […]

Meeting Abstract 70.8  Tuesday, Jan. 6 09:45  The walking heads: Hox gene expression in Hypsibius dujardini and the evolution of the tardigrade body plan SMITH, FW*; BOOTHBY, TC; GOLDSTEIN, B; University of North Carolina at Chapel Hill; University of North Carolina at Chapel Hill; University of North Carolina at Chapel Hill frank.w.smithiii@gmail.com We would like to understand […]

Meeting Abstract 70.4  Tuesday, Jan. 6 08:45  Investigating the molecular determinants for polarity in sea urchin embryogenesis WANG, L*; WU, W; WIKRAMANAYAKE, AH; Univ. of Miami, Coral Gables; Univ. of Miami, Coral Gables; Univ. of Miami, Coral Gables cellcreator@bio.miami.edu The Dishevelled (Dsh) protein in the Wnt signaling pathway is essential for endomesoderm specification in sea urchin embryos. […]

Meeting Abstract 70.3  Tuesday, Jan. 6 08:30  Hox Genes are Involved in Patterning the Oral Aboral Axis in Nematostella vectensis STEPHENSON, T/Q*; DUBUC, T/Q; MARTINDALE, M/Q; Whitney Marine Lab; Whitney Marine Lab; Whitney Marine Lab tbs5@ufl.edu Hox genes are a set of transcription factors important for axial specification during development in bilaterally symmetrical animals (the Bilateria). The […]

Meeting Abstract 70.2  Tuesday, Jan. 6 08:15  Elucidation of the Pax/Six gene regulatory network in the sponge Ephydatia muelleri RIVERA, AS*; HABERKERN, N; ARUL NAMBI RAJAN, A; POSFAI, D; HILL, A; University of the Pacific; University of the Pacific; University of the Pacific; University of Richmond; University of Richmond arivera@pacific.edu As one of the simplest metazoan model […]

Meeting Abstract 70.5  Tuesday, Jan. 6 09:00  Blastodermal segmentation in the milkweed bug Oncopeltus fasciatus CHIPMAN, AD*; STAHI, R; The Hebrew University ariel.chipman@huji.ac.il The insect segmented body plan is conserved and stereotypical, but the embryonic processes leading to this body plan are variable. In long germ segmentation, best known from Drosophila melanogaster, a hierarchy of gene interactions […]

Meeting Abstract 70-5  Wednesday, Jan. 6 09:00  Repeated adaptation to dangerous prey through a predictable molecular pathway in the garter snake Thamnophis sirtalis HAGUE, MTJ*; BRODIE JR., ED; BRODIE III, ED; University of Virginia; Utah State University; University of Virginia mh6nf@virginia.edu Adaptive evolution may proceed down a predictable molecular path when functional constraints or pleiotropy restrict molecular […]

Meeting Abstract 70-6  Wednesday, Jan. 6 09:15  Opportunity for selection: the shape of the fitness landscape in an amphidromous waterfall-climbing Hawaiian goby Sicyopterus stimpsoni MOODY, KN*; KAWANO, SM; BRIDGES, WC; BLOB, RW; SCHOENFUSS, HL; PTACEK, MP; Tulane Univ.; NIMBioS; Clemson Univ.; Clemson Univ.; St. Cloud State Univ.; Clemson Univ. kmoody3@tulane.edu Habitat heterogeneity can drive the evolution of […]