MARTINEZ, M.L.; CHAPMAN, L.J.; GRADY, J.M.; REES, B.B.; University of New Orleans, Louisiana; University of Florida, Gainesville; University of New Orleans, Louisiana; University of New Orleans, Louisiana: Interdemic Variation in Lactate Dehydrogenase in the African Cyprinid Barbus neumayeri This study evaluated whether Barbus neumayeri from habitats of high and low oxygen concentration differ in their […]

MOORE, F. B.-G.; BAGATTO, B.; University of Akron; University of Akron: Evolutioary response to oxygen stress in Zebrafish (Danio rerio): An Experimental Evolution Approach Measurements of adaptation have traditionally been performed by comparisons between taxa. Inherent in this approach is a confounding of natural selection and other uncontrolled factors. This has led to a criticism […]

LIU, W; VLECK, CM; Iowa State Univ.; Iowa State Univ.: Does oxidative damage to DNA increase with age in birds? Aerobic respiration and exposure to various exogenous agents results in the formation of reactive oxygen species (ROS) that cause oxidative damage to biological systems. Cumulative damage to cellular macromolecules, like DNA, may contribute significantly to […]

PRICE, R.M.; Univ. of North Carolina, Chapel Hill: Why neogastropod shell ornamentation does not correlate with latitude in the North Eastern Pacific In a pervious study, I found that the amount of external ornamentation in neogastropods from the North Eastern Pacific is independent of latitude, a result that rejects the hypothesis that morphological diversity parallels […]

STAYTON, C. Tristan; The University of Chicago: On the road to herbivory: patterns of morphological and functional evolution in herbivorous lizard lineages Lizards provide an excellent opportunity for investigating the origin and evolution of herbivory, as plant-eating has evolved many times in this group. Although patterns of convergence in body size, skull shape, and jaw […]

GILLIS, J. A.*; WITTEN, P. E.; HALL, B. K.; Dalhousie University, Halifax, Nova Scotia, Canada; Zoologisches Institut, University of Hamburg, Germany; Dalhousie University, Halifax, Nova Scotia, Canada: Chondroid bone and secondary cartilage contribute to apical dentary growth in juvenile Atlantic salmon, Salmo salar Linnaeus (1758) During their spawning migration, anadromous male Atlantic salmon (Salmo salar) […]

SEDLMAYR, J; LEGENZOFF, E; REHOREK, S; School of Medicine, Univ of Ca, Los Angeles; Slippery Rock Univ; Slippery Rock Univ: Anatomy of the Circadian Clock in Archosaurs The Harderian-pineal-retinal-hypothalamic axis (HaH) and its relation to circadian rhythms (cyclical behavioral patterns regulated by indoles) is a critical component of amniote biology. Little is known of this […]

VENIT, E.P.; Duke University: All for one and one for all? A new method for quantifying individuation in colonial metazoans. Biologists have long been fascinated by the problems of aggregation, hierarchy and biological complexity. How do more complex forms of life arise from an aggregation of simpler parts? At what point in its evolutionary history […]

GALIS, F.*; VAN DOOREN, T.J.M.; METZ , J.A.J.; WITKAM , A.; WIJNAENDTS, L.C.D.; Leiden University, The Netherlands; idem; idem; idem; Free University Medical Centre, Amsterdam: The coordinated patterning of the embryonic axes and the conservation of the seven cervical vertebrae The number of cervical vertebrae is extremely conserved in mammals. Yet, studies on fetal deaths […]

BROWN, FD*; SWALLA, BJ; University of Washington; University of Washington: Germ Cells and Vasa Expression in Ascidians Several evolutionary transitions between solitary and colonial lifestyles have been identified in the tunicates. These transitions are accompanied by dramatic morphological, developmental, and reproductive changes. We are studying whether stem cells involved in blastogenesis (asexual reproduction) of a […]