Meeting Abstract S9-1.7  Jan. 6  Feeding mechanisms in snakes KLEY, N.J.*; MEHTA, R.S.; Stony Brook Univ.; Univ. of California, Davis nathan.kley@stonybrook.edu Most previous studies of snake feeding mechanisms have focused predominantly on details of the anatomy of the jaw apparatus and/or various qualitative aspects of feeding behavior. In contrast, relatively few studies have attempted to quantify feeding […]

Meeting Abstract S9-1.1  Jan. 6  Feeding Mechanisms in Cartilaginous Fishes WILGA, C.D*; MOTTA, P.J.; SANFORD, C.P.; Univ. Rhode Island; Univ. South Florida; Hofstra Univ. cwilga@uri.edu Early chondrichthyans had limited cranial kinesis and a non-suspensory hyoid, suggesting a ram dominated capture mechanism. Modern sharks are characterized by a kinetic upper jaw braced by a suspensory hyoid arch that […]

Meeting Abstract S9-1.5  Jan. 6  Evolution of feeding mechanics in amphibians DEBAN, S.M.; Univ. South Florida, Tampa sdeban@cas.usf.edu The three major groups of living amphibians have diversified in feeding biomechanics, in both larval and adult phases of their life history. Caecilian larvae have morphology that is consistent with suction feeding, while juveniles of viviparous and direct developing […]

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 S8-2.1  Jan. 6  Proximate Developmental Mediators of Sexual Size Dimorphism: Case Studies from Squamate Reptiles JOHN-ALDER, H.B.*; COX, R.M.; TAYLOR, E.N.; Rutgers Univ.; Ohio State Univ.; California Polytechnic State Univ., San Luis Obispo henry@aesop.rutgers.edu Sexual size dimorphism (SSD) is nearly ubiquitous in squamate reptiles, but we know very little about the relative importance of sex […]

Meeting Abstract S8-2.2  Jan. 6  Adaptation, sexual dimorphism, and ecolomorphological diversity in Caribbean Anolis lizards BUTLER, MA; University of Hawaii at Manoa mbutler@hawaii.edu Sexual dimorphism is widespread and substantial throughout the animal world. It is surprising, then, that such a pervasive source of biological diversity has not been integrated into studies of adaptive radiation, despite extensive and […]

Meeting Abstract S8-2.3  Jan. 6  Acceleration and power output in gravid green iguanas SCALES, J.A.*; BUTLER, M.A.; Univ. of Hawaii, Manoa; Univ. of Hawaii, Manoa jscales@hawaii.edu A major selective pressure for the evolution of sexual dimorphism is differential reproductive roles of the sexes (Darwin, 1871). Females of many species experience large increases in mass and volume related […]

Meeting Abstract S8-1.7  Jan. 6  Sexual segregation in ungulates: proximate and ultimate causes RUCKSTUHL, KE; University of Calgary kruckstu@ucalgary.ca The even-toed ungulates are the most successful group of large herbivores, being native to almost every continent, and inhabiting all latitudes and altitudes. In most social ungulate species, males and females live in separate groups outside the breeding […]

Meeting Abstract S8-1.2  Jan. 6  Sex differences in locomotor performance and thermoregulation in reptiles: behavioral and ecological implications LAILVAUX, S; University of Antwerp slailvau@ua.ac.be Males and females from several animal taxa differ in locomotor performance abilities such as sprinting and jumping. These performance dimorphisms may be explained at least partially by sex differences in physiology. In ectotherms […]

Meeting Abstract S8-1.5  Jan. 6  Origin and evolution of novel phenotypes: From environmental induction to genetic inheritance in color displays BADYAEV, Alexander; University of Arizona abadyaev@email.arizona.edu The origin of novel phenotypes is one of the most controversial and unresolved questions in biology. Phenotypic accommodation of environmentally-induced developmental plasticity is thought to be an initial step in the […]