Meeting Abstract 117-6  Sunday, Jan. 7 09:15 – 09:30  Biomechanics and Evolution of the Crocodyliform Skull SELLERS, KC*; MIDDLETON, KM; HOLLIDAY, CM; SELLERS, Kaleb; Univ. of Missouri; Univ. of Missouri; Univ. of Missouri kcsty5@mail.missouri.edu http://www.kalebsellers.com The flat, akinetic skull of crocodyliforms evolved from the tall, kinetic skull of basal suchians, resulting in a reorganization of the feeding […]

Meeting Abstract 116-5  Sunday, Jan. 7 09:00 – 09:15  Splashing into water: cranial and biomechanical diversity in a cosmopolitan radiation of birds ELIASON, CM*; HACKETT, SJ; Field Museum of Natural History; Field Museum of Natural History celiason@fieldmuseum.org Understanding why some groups of organisms have more diverse traits than others remains a key challenge in biology. This challenge […]

Meeting Abstract 116-1  Sunday, Jan. 7 08:00 – 08:15  Retracing the evolution of the otic joint in birds and fossil theropods through histology: new insights on streptostyly BAILLEUL, A/M*; HOLLIDAY, C/M; University of Missouri; University of Missouri bailleula@missouri.edu The otic joint is functionally important in many sauropsids, as it often allows movement during feeding, a condition known […]

Meeting Abstract 116-4  Sunday, Jan. 7 08:45 – 09:00  Morphological adaptations to hovering in a remarkable radiation of Old World nectarivorous birds: the sunbirds (Nectariniidae) LOUIS, LD*; BOWIE, RCK; DUDLEY, R; Univ. of California, Berkeley; Univ. of California, Berkeley; Univ. of California, Berkeley llouis@berkeley.edu Hovering is an energetically expensive mode of flight and places high mechanical stress […]

Meeting Abstract 116-3  Sunday, Jan. 7 08:30 – 08:45  Does Body Mass Constrain Avian Wing Shape or Sternum Shape? BAUMGART, SL; Univ. of Chicago slbaumgart@uchicago.edu Two factors central to flight mechanics in birds are forces exerted by the flight muscles on the wing and wing shape that governs its aerodynamics. Wing shape has been linked to behavior, […]

Meeting Abstract 116-2  Sunday, Jan. 7 08:15 – 08:30  A musculoskeletal model of the avian flight apparatus: spring-like qualities of the pectoralis and supracoracoideus muscles HEERS, A. M.*; TUCCI, E. R.; LENTINK, D; Stanford University; Stanford University; Stanford University ashmheers@gmail.com Tendons and other connective tissues in muscles are thought to play a dynamic role in many types […]

Meeting Abstract 115-5  Sunday, Jan. 7 09:00 – 09:15  Vitellogenin as a Biomarker for Endocrine Disruption in Tetrapods: Evaluation of Its Utility and Potential. SELCER, KW; Duquesne University selcer@duq.edu A number of chemicals released into the environment mimic the action of the steroid hormone estrogen. These environmental estrogens pose potential health risks to humans and wildlife by […]

Meeting Abstract 115-3  Sunday, Jan. 7 08:30 – 08:45  Variation in the Effects of Endocrine Disruptors on Sex Differentiation in Male African Clawed Frogs (Xenopus laevis) TSANG, ME*; HAYES, TB; University of California, Berkeley; University of California, Berkeley tsang.maggie@berkeley.edu The herbicide atrazine is one of the most commonly used agrichemicals in the world. It is also a […]

Meeting Abstract 115-4  Sunday, Jan. 7 08:45 – 09:00  The Effects of Developmental Stress on Future and Transgenerational Stress Tolerance HOFFMAN, AH*; FINGER, JW; WADA, H; Auburn University; Auburn University; Auburn University ajh0077@auburn.edu Developmental stressors are thought to have a negative impact on physiological functions and fitness. However, recent work suggests that a mild developmental stressor can […]

Meeting Abstract 115-6  Sunday, Jan. 7 09:15 – 09:30  Studies on ecdysteroid hormone, its receptor gene (EcR) &its expression related to growth & reproduction in decapod crustaceans GOPINATHAN, A*; SHYAMAL, S; DURICA, DS; VIT University; Univ. of Oklahoma; Univ. of Oklahoma ganilkumar@vit.ac.in The grapsid crab M. messor exhibits definite season dependent patterns of programming of molting and […]