Meeting Abstract S8-1.1  Jan. 6  Functional and ecological correlates of ecologically-based dimorphisms in squamate reptiles VINCENT, S.E.*; HERREL, A; Stony Brook University svincent@ethol.zool.kyoto-u.ac.jp Sexual dimorphism in phenotypic traits associated with resource use is a widespread phenomenon throughout the animal kingdom. Ecological dimorphisms can be generated initially by sexual selection on body or head size, but are typically […]

Meeting Abstract S8-1.3  Jan. 6  Evolution of sexual dimorphism in habitat use and escape behaviour in Anolis lizards. VANHOOYDONCK, Bieke*; HERREL, Anthony; IRSCHICK, Duncan J; University of Antwerp, Wilrijk; University of Antwerp, Wilrijk; University of Massachusetts, Amherst bieke.vanhooydonck@ua.ac.be Evolutionary biologists have long been fascinated by intersexual differences. In most cases, quantification of sexual dimorphism has remained limited […]

Meeting Abstract S8-1.6  Jan. 6  Developmental evolution of BMPs: from postnatal epigenetic remodeling to adaptive genetic divergence YOUNG, Rebecca L*; BADYAEV, Alexander V; University of Arizona; University of Arizona rlyoung@email.arizona.edu Evolutionary studies of ecomorphological adaptations in vertebrates have revealed a common role for bone morphogenetic proteins (BMPs) in inducing developmental changes in skeletal morphology. Whereas the importance […]

Meeting Abstract S8-1.4  Jan. 6  Colour polymorphism without ecological niche divergence in the lacertid lizard Podarcis melisellensis HUYGHE, Katleen*; VANHOOYDONCK, Bieke; HERREL, Anthony; VAN DAMME, Raoul; Univ. of Antwerp, Belgium; Univ. of Antwerp, Belgium; Univ. of Antwerp, Belgium; Univ. of Antwerp, Belgium katleen.huyghe@ua.ac.be Different hypotheses have been proposed to explain the origin of phenotypic polymorphisms. Non-adaptive mechanisms […]

Meeting Abstract S7-2.2  Jan. 6  Reflections on integrative and comparative approaches in movement neuroscience STUART, D.G.; University of Arizona, Tucson dgstuart@u.arizona.edu Integrative movement neuroscience involves blending “inside-out” and “outside-in” approaches in the study of posture and movement. The former is characterized by determining the properties of single cells within the central nervous system (CNS) and then testing […]

Meeting Abstract S7-2.1.1  Jan. 6  GENERAL PROPERTIES OF LOCOMOTOR CONTROL SYSTEMS PROCHAZKA, A.*; YAKOVENKO, S.; University of Alberta, Edmonton; University of Montreal, Montreal arthur.prochazka@ualberta.ca Complex tasks such as locomotion involve the neural integration of sensory input, spinal pattern generation and predictive control. The contributions of these mechanisms have recently been investigated with neuro-biomechanical models (Yakovenko et al. […]

Meeting Abstract S7-1.4.1  Jan. 6  The Neurobiology of Muscle Fatigue: 15 Years Later ENOKA, R.M.*; BARRY, B.K.; University of Colorado, Boulder; University of Colorado, Boulder enoka@colorado.edu Fifteen years ago, Stuart and Enoka published a review paper (J Appl Physiol 72: 1631-1648, 1992) on the neurobiology of muscle fatigue. The review emphasized that fatigue could be caused by […]

Meeting Abstract S7-1.1.2  Jan. 6  The Ionic Mechanism Underlying Postinhibitory Rebound in Clione limacina Swim Interneurons PIRTLE, T.J.*; SATTERLIE, R.A.; Abilene Christian University ; Univ. North Carolina, Wilmington Thomas.Pirtle@acu.edu Swimming locomotion in Clione limacina is produced by alternate dorsal-ventral flexions of its wing-like parapodia which are ultimately controlled by two groups of pedal interneurons that interact via […]

Meeting Abstract S7-1.2.1  Jan. 6  Short- and long-term adaptation of the motor pattern for walking PEARSON, K.G.*; MCVEA, D.A.; University of Alberta, Edmonton; University of Alberta, Edmonton keir.pearson@ualberta.ca An obvious feature of animal locomotion is the ability to rapidly change motor patterns to adapt movements to a changing environment. Less obvious is the capacity to modify motor […]

Meeting Abstract S7-1.2.2  Jan. 6  Obstacle avoidance during walking MCVEA, DA*; PEARSON, KG; University of Alberta; University of Alberta dmcvea@ualberta.ca Two basic features of animal locomotion are 1) avoidance of obstacles that either impede progress or endanger the animal, and 2) withdrawal responses from obstacles that unexpectedly contact the animal. In walking mammals, the former depends primarily […]