Meeting Abstract S9-1.2  Jan. 6  Cranial design and feeding mechanisms of batoid fishes DEAN, M.N.*; SUMMERS, A.P.; Univ. of California Irvine; Univ. of California Irvine mdean@uci.edu The two major groups of elasmobranch fishes likely diverged from a cartilaginous and suction-feeding common ancestor, yet underwent a drastic evolutionary divergence in body form. While sharks are largely fusiform, rays […]

Meeting Abstract S9-1.4  Saturday, Jan. 7  The evolution of a hox code: evidence from a basal metazoan MARTINDALE, Mark, Q.*; DUBUC, Tim; SIMMONS, Dave K.; Univ. Hawaii; Univ. Hawaii; Univ. Hawaii mqmartin@hawaii.edu Hox genes have played an important role in re-galvanizing a modern understanding of the role of development and body plan evolution. Comparative genomics have revealed […]

Meeting Abstract S9-1.1  Saturday, Jan. 7  The Cambrian Conundrum: Early divergence and later ecological success in the early history of animals SPERLING, Erik*; ERWIN, Douglas; LAFLAMME, Marc; TWEEDT, Sarah; PISANI, Davide; PETERSON, Kevin; Harvard University; Smithsonian National Museum of Natural History; Smithsonian National Museum of Natural History; Smithsonian National Museum of Natural History; National University of Ireland, […]

Meeting Abstract S9-1.6  Saturday, Jan. 7  Tail loss: investigating the Molgula BROWN, C.T.*; LOWE, E; PAVANGADKAR, K; MALISKA, M.E.; SWALLA, B.J.; Michigan State University; Michigan State University; Michigan State University; University of Washington, Seattle; University of Washington, Seattle ctb@msu.edu The Molgulid clade of ascidians contains multiple species that have at least three times independently lost tails during […]

Meeting Abstract S9-1.2  Saturday, Jan. 7  Phenotypic plasticity and the evolutionary diversification of plant sexual systems. DIGGLE, PK; University of Colorado/Harvard University diggle@fas.harvard.edu Andromonoecy, a sexual system in which individuals bear both hermaphroditic (bisexual) and male flowers, has evolved independently in numerous plant lineages, yet the advantages of this system remain poorly understood. I will report on […]

Meeting Abstract S9-1.3  Saturday, Jan. 7  Origin, Evolution & Development of the Chordates: Notochord gain or retention? SWALLA, B.J.*; Univ. of Washington bjswalla@u.washington.edu Hemichordates and echinoderms are crucial for understanding the evolution of the vertebrate central nervous system (CNS), deuterostome evolution and chordate origins. Hemichordates share many chordate features, including a post-anal tail, gill slits, and a […]

Meeting Abstract S9-1.5  Saturday, Jan. 7  Evolutionary inferences from transcriptional analysis of wild and domesticated tomato SINHA, N R; Univ. of California, Davis nrsinha@ucdavis.edu The domestication of crop species from wild relatives altered human history, while human intervention simultaneously modified the form, physiology, and life history of the domesticated plant species. The process of domestication thus provides […]

Meeting Abstract S9-1.7  Monday, Jan. 7  Physiological response and local adaptation of marine invertebrates to natural variation in the ocean acidification seascape HOFMANN, Gretchen/E; UC Santa Barbara hofmann@lifesci.ucsb.edu Understanding how marine ecosystems will respond to future anthropogenic change – e.g., ocean warming and ocean acidification – is a critical priority for the research community. Central to this […]

Meeting Abstract S9-1.2  Monday, Jan. 7  Interactions between temperature and oxygen and the evolution of body size in invertebrates KLOK, CJ*; HARRISON, JF; Arizona State University; Arizona State University cjklok@asu.edu Temperature is a key factor that affects the rates of growth and development in animals, which ultimately determine body size. While not universal, a widely documented and […]

Meeting Abstract S9-1.4  Monday, Jan. 7  Impacts of warming and ocean acidification on growth of larval and juvenile sea urchins – from the poles to the tropics BYRNE, M; Univ. of Sydney, Australia mbyrne@anatomy.usyd.edu.au The Temperature Size Rule states that temperature increases development rates of ectotherms faster than growth rates, resulting in smaller body sizes at life […]