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 […]

STOEHR, Andrew M.; Univ. of California, Riverside: Melanin in immune defense and wing coloration in the cabbage white butterfly, Pieris rapae The cell-mediated encapsulation response of the arthropod immune system utilizes the pigment melanin. Melanin or its precursors are also used for cuticle sclerotization and coloration. Recent work in some insect species suggests that these […]

KAHN, P.F.*; MENDON�A, M.T.; Auburn University; Auburn University: Effects of Gopher Tortoise Relocation on the Development and Progression of Upper Respiratory Tract Disease Upper Respiratory Tract Disease (URTD) is a bacterial disease caused by Mycoplasma agassizii that affects both gopher tortoises and desert tortoises. Conservationists debate the degree to which URTD impacts tortoises� health because […]

LEE, Kelly A.; MARTIN, Lynn B.; WIKELSKI, Martin C.; Princeton University; The Ohio State University; Princeton University: Do immune defense strategies differ between invasive New World populations of the House Sparrow and their Old World ancestors? When introduced into new regions, invading organisms leave many native pathogens behind but also encounter evolutionarily novel disease threats. […]

ROGERS-LOWERY, C. L.; DIMOCK, R. V.; Wake Forest University: Antibody-mediated immune response of fish during development of acquired resistance against larvae of freshwater mussels The glochidia larvae of most freshwater mussels are obligate ectoparasites on fishes, on which they metamorphose into juveniles. We have demonstrated that bluegill sunfish (Lepomis macrochirus) develop acquired resistance to glochidial […]

BAYNE, CJ; BENDER, RC; BRODERICK, EJ; GOODALL, CP; Oregon State University; Oregon State University; Oregon State University; Oregon State University: A genetic basis for resistance to Schistosoma mansoni in Biomphalaria glabrata. Parasites normally elicit different degrees of pathology among members of a host population, due in part to host genetic polymorphisms. In the Schistosoma mansoni-Biomphalaria […]