Meeting Abstract 28.11  Jan. 5  Identification of luminescent symbionts from the genera Uroteuthis, Loliolus, and Euprymna (Mollusca: Cephalopoda) GUERRERO-FERREIRA, R.C.*; NISHIGUCHI, M.K.; New Mexico State University; New Mexico State University ricardo@nmsu.edu Luminescent bacteria in the family Vibrionaceae (Bacteria: γ-Proteobacteria) are commonly found in complex, bilobed light organs of sepiolid and loliginid squids. Although morphology of these organs […]

Meeting Abstract 28.10  Jan. 5  Evolutionary Specialization of Sponge-Cyanobacteria Symbioses: Cospeciation vs. Colonization THACKER, R.W.; Univ. of Alabama at Birmingham thacker@uab.edu Highly specific interactions between hosts and symbionts are often attributed to cospeciation; however, independent colonization events can generate similar patterns of host specificity. Symbiotic filamentous cyanobacteria (Oscillatoria spongeliae) have been reported from diverse marine sponges, with […]

Meeting Abstract 28.7  Jan. 5  Evolution of gibbons: resolving the Hylobates phylogeny with multiple datasets WHITTAKER, D.J.; Indiana University, Bloomington djwhitta@indiana.edu The lar group of gibbons or small apes (genus Hylobates) has long represented a phylogenetic puzzle, with different datasets producing very different results. Most likely, this radiation represents a true polytomy. Rising sea levels in southeast […]

Meeting Abstract 28.3  Jan. 5  An atypical type taxon: Phylogenetics and biology of the echinid Echinoidea COX, L.N.*; MOOI, R.; Auburn Univ., Alabama; California Acad. Sciences, San Francisco rmooi@calacademy.org The Echinidae Gray, 1825 is a well-known, widely distributed group of sea urchins. Their ubiquity in the northern Atlantic, particularly the genus Echinus, gave rise to the earliest […]

Meeting Abstract 27.4  Jan. 5  Taxonomic Significance of Gill Slit Morphology in Extant Sharks DOLCE, J.L.*; WILGA, C.D.; University of Rhode Island jdol6206@postoffice.uri.edu The number of gill slits that an elasmobranch species possesses is often used for taxonomic classification. However, other characteristics of the gill slits that have been overlooked appear to have taxonomic significance. In this […]

Meeting Abstract 27.3  Jan. 5  How Dinosaurs Build Beaks: Homology Between Avian Rhamphotheca and Diapsid Facial Scales HIERONYMUS, TL*; WITMER, LM; Ohio University; Ohio University th108702@ohiou.edu Studying the evolution of facial integument in non-avian dinosaurs requires an initial framework of proposed transformational homologs for various diapsid skin features, including facial scales and avian rhamphothecae. The most thoroughly […]

Meeting Abstract 27.1  Jan. 5  Do Tetragnatha spider jaws scale like genitalia or like armaments? BRANDT, Y*; ANDRADE, MCB; University of Toronto at Scarborough; University of Toronto at Scarborough ybrandt@utsc.utoronto.ca In many animal taxa, copulatory appendages show negative allometry (relative appendage size decreases as body size increases) whereas appendages used in fighting and threat display are positively […]

Meeting Abstract 27.2  Jan. 5  Development and functional variation of barnacle penis morphology HOCH, JM; Stony Brook University jmatth@life.bio.sunysb.edu Barnacles are simultaneous hermaphrodites that reproduce by copulating with neighbors. To accomplish this, barnacles must extend their penis into the water column, locate receptive functional females and deposit sperm. This may take several minutes, during which the mating […]

Meeting Abstract 27.5  Jan. 5  Cranial ossification and growth patterns of balaenopteroid mysticetes WALSH, B.M.*; BERTA, A.B.; San Diego State University; San Diego State University bredamckay@yahoo.com The sequence of ossification of sutures in the skull of baleen whales (mysticetes) can be used to characterize the relative age of these animals. We examined occipital suture closure in four […]

Meeting Abstract 26.5  Jan. 5  Scallops respond to simulated particles in flow SPEISER, D. I.*; SWEENEY, A. M.; JOHNSEN, S; Duke University; Duke University; Duke University dis4@duke.edu Scallops� eyes are abundant in number and positioned along the mantle at the edges of the valves. These eyes can form relatively high-resolution images, and their morphology and optics have […]