Meeting Abstract 123.4  Monday, Jan. 7  Responses to climate change: morphology and behavior, in Rocky Mountain Colias species MACLEAN, H J*; HIGGINS, J K; KINGSOLVER, J G ; BUCKLEY, L B; University of North Carolina Chapel Hill heidi.maclean@gmail.com Colias butterflies have long been a model system for understanding thermoregulatory behavior and local adaptation to climate. What are […]

Meeting Abstract 123.3  Monday, Jan. 7  Physiological and Genomic Variation in Rapid Cold Hardening and Developmental Acclimation in Drosophila melanogaster EGGE, AR*; NOH, S; ELLER, OC; HAHN, DA; MORGAN, TJ; Kansas State University; Kansas State University; Kansas State University; University of Florida; Kansas State University aegge@ksu.edu Adaptation and plastic responses to daily and seasonal fluctuations can lie […]

Meeting Abstract 123.1  Monday, Jan. 7  Evolution of thermal plasticity in changing environments. CONDON, C*; COOPER, B; YEAMAN, S; ANGILLETTA, M; Arizona State University; Indiana University; University of British Columbia ; Arizona State University chcondon@asu.edu Environmental fluctuations should favor genotypes that can perform across a broad range of conditions. When these fluctuations occur primarily among generations, developmental […]

Meeting Abstract 122.5  Monday, Jan. 7  The canonical echinoid apical organ evolved from within the euechinoids: evidence from the cidaroid Eucidaris tribuloides MACNEIL, K.E.A.*; PATEL, D; TAYLOR, V; BISHOP, C.D.; BURKE, R.D.; St. Francis-Xavier Univ., Antigonish, Nova Scotia; Univ. of Victoria, Victoria, B.C. cbishop@stfx.ca Descriptions of the structure and development of larval nervous systems of all five […]

Meeting Abstract 122.3  Monday, Jan. 7  Spider vasa is required for early embryogenesis but not for germline specification SCHWAGER, E.E.*; MENG, Y; EXTAVOUR, C.G.; Harvard University; Harvard University; Harvard University eschwager@oeb.harvard.edu Metazoans specify their germline either early in development by maternally transmitted cytoplasmic factors (inheritance), or later in development by signaling factors from neighboring tissues (induction). The […]

Meeting Abstract 122.1  Monday, Jan. 7  Notch signaling during neural development in the annelid Capitella teleta TOLCHIN, S; MEYER, NP*; Clark Univ. nmeyer@clarku.edu Central nervous system development begins with fate specification of neural precursor cells, which generate the brain and nerve cord. Comparisons between vertebrates and arthropods have provided important insights into neural development, but studies in […]

Meeting Abstract 122.2  Monday, Jan. 7  Histamine functions and distribution in gastrulation and skeletogenesis of the sea urchin S. purpuratus NGUYEN, J; HEYLAND, A*; University of Guelph, Guelph aheyland@uoguelph.ca Earlier studies established a novel function of histamine signaling (HA) in metamorphic competence of the sea urchin Strongylocentrotus purpuratus. Preliminary results suggests that several neuron like cells synthesize […]

Meeting Abstract 122.4  Monday, Jan. 7  Gene interactions in the sex differentiation pathway of Oncopeltus fasciatus (Heteroptera) LASLO, M*; ANGELINI, DR; American University; Colby College mlaslo09@gmail.com The regulation and development of sex is a classic subject in developmental biology. The biological importance of sex suggests that sex determination mechanisms could be conserved among sexually reproducing species; however, […]

Meeting Abstract 121.3  Monday, Jan. 7  Resolving the genus Philine: Description and phylogenetic placement of six previously undocumented species (Gastropoda: Opisthobranchia) GONZALES, C.M.*; GOSLINER, T.M.; Duke University; California Academy of Sciences cgonzales@calacademy.org Species of the genus Philine, one of the most species-rich genera of opisthobranchs, are predatory sea slugs who use their ability to secrete poisonous toxins […]

Meeting Abstract 121.6  Monday, Jan. 7  Population genetics of the symbiotic sea anemone Aiptasia sp. GRAJALES, A*; RODRIGUEZ, E; American Museum of Natural History agrajales@amnh.org Sea anemones (Cnidaria: Anthozoa: Actiniaria) belonging to the genus Aiptasia have been used as a model organism in an increasing number of studies detailing mutualism of dinoflagellate-cnidarian symbiosis, bleaching mechanisms, and invertebrate […]