Meeting Abstract 51.11 Saturday, Jan. 5 Morphometrics of Crocodilian Cranial Variation in Ecomorphology and Ontogeny SADLEIR, R.W.; Univ. of Chicago and the Field Museum, Chicago, IL rsadleir@uchicago.edu Crown group crocodilians exhibit a high degree of cranial shape variation and convergence throughout their 80 million-year fossil record. Phylogenetic character correlation tests show that repeated transitions among generalized, blunt […]
year: 2008
Evolutionary and developmental origins of the maxillary dentition of snakes Insights from tooth surface morphology
Meeting Abstract 51.6 Saturday, Jan. 5 Evolutionary and developmental origins of the maxillary dentition of snakes: Insights from tooth surface morphology JACKSON, K.*; VONK, , F.J.; ADMIRAAL, J.; RICHARDSON, M.K.; Whitman College; Leiden University; Leiden University; Leiden University jacksok@whitman.edu The Colubroidea is an enormous group of snakes (approx. 2400 species) made up of many lineages, whose branching […]
Evolution of the Frontal Sinuses in Bovidae
Meeting Abstract 51.3 Saturday, Jan. 5 Evolution of the Frontal Sinuses in Bovidae FARKE, A.A.; Stony Brook Univ., New York afarke@ic.sunysb.edu Cranial pneumaticity is remarkably homoplastic, with independent pneumatization of some cranial bones occurring multiple times across mammals. The factors that drive pneumatization are unclear, however. Bovids, a clade of horned artiodactyls including sheep, goats, and cattle, […]
Early development of Ancistrus cf triradiatus and Corydoras aeneus a case study for understanding the role of ontogenetic patterning in loricarioid evolution
Meeting Abstract 51.8 Saturday, Jan. 5 Early development of Ancistrus cf. triradiatus and Corydoras aeneus: a case study for understanding the role of ontogenetic patterning in loricarioid evolution. HUYSENTRUYT, F.*; GEERINCKX, T.; ADRIAENS, D.; Ghent University, Gent, Belgium frank.huysentruyt@ugent.be The Neotropical fauna is one of the most diverse and least known; understanding this diversity and the specific […]
Convergence in a Mechanically Complex Phenotype Detecting Structural Adaptations For Crushing in Cichlid Fishes
Meeting Abstract 51.7 Saturday, Jan. 5 Convergence in a Mechanically Complex Phenotype: Detecting Structural Adaptations For Crushing in Cichlid Fishes HULSEY, CD*; ROBERTS, RJ; STREELMAN, JT; Univ. of Tennessee; Georgia Tech; Georgia Tech dh251@mail.gatech.edu Morphological convergence provides strong evidence that evolution is adaptive. However, putatively convergent morphology is often examined in two-dimensions with no explicit model of […]
Conservatism in lizard vertebral number evolution is widespread but not universal
Meeting Abstract 51.4 Saturday, Jan. 5 Conservatism in lizard vertebral number evolution is widespread but not universal. BERGMANN, P.J.*; IRSCHICK, D.J.; University of Massachusetts Amherst; University of Massachusetts Amherst pjbergma@nsm.umass.edu We collected vertebral number data for a sample of 2402 lizards, representing 1045 species, or 27% of extant diversity. We mapped these data onto a supertree of […]
Comparative morphology of glandular setae, distal claws, and terminal fangs of the crustacean remipede Speleonectes tanumekes
Meeting Abstract 51.1 Saturday, Jan. 5 Comparative morphology of glandular setae, distal claws, and terminal fangs of the crustacean remipede Speleonectes tanumekes. VAN DER HAM, J.L.*; FELGENHAUER, B.E.; Univ. Louisiana at Lafayette; Univ. Louisiana at Lafayette jvdham@louisiana.edu Terminal pores on crustacean setae are commonly associated with chemoreception. We present an exception to that association with the description […]
Three-dimensional kinematics of pectoral fin locomotion in freshwater stingrays
Meeting Abstract 50.2 Saturday, Jan. 5 Three-dimensional kinematics of pectoral fin locomotion in freshwater stingrays BLEVINS, E.L.*; LAUDER, G.V.; Harvard University; Harvard University eblevins@fas.harvard.edu Batoid swimming is characterized by distinctive undulations and oscillations of expanded, flexible pectoral fins. Previous work has described fin motion in two dimensions, placing species along a continuum from undulatory to oscillatory locomotion. […]
Strain patterns on an antenna are moth antennae tuned
Meeting Abstract 50.3 Saturday, Jan. 5 Strain patterns on an antenna: are moth antennae tuned? MYHRVOLD, C.A.*; FOX, J.L.; SANE, S.P.; DANIEL, T.L.; Princeton University; University of Washington; National Center for Biological Science, Bangalore, India; University of Washington jessfox@u.washington.edu Insects rely on mechanosensory feedback to maintain stable flight. For example, a recent study by Sane et al. […]
Flight biomechanics in the wild Environmental turbulence and rolling instablities in foraging orchid bees
Meeting Abstract 50.6 Saturday, Jan. 5 Flight biomechanics in the wild: Environmental turbulence and rolling instablities in foraging orchid bees COMBES, S.A.*; PALEN, W.J.; DUDLEY, R.; Harvard University; Simon Fraser University; U.C. Berkeley scombes@oeb.harvard.edu Tropical orchid bees cover vast distances at high flight speeds, foraging for scattered resources. Although this long-distance foraging is central to feeding, mating […]
