CARL, T. F.; HANKEN, J.*: Neural-crest derivation of the ossified skull in amphibians revealed by vital labeling with GFP. Derivation of most if not all of the ossified skull from the embryonic neural crest is an accepted axiom of contemporary developmental biology. Yet, this “fact” is based on direct empirical results involving just one species […]

McCauley, D.W.*; Bronner-Fraser, M.: Cranial neural crest cell migration in the lamprey Petromyzon marinus The neural crest is a vertebrate-specific population of cells that gives rise to much of the peripheral nervous system, pigment cells, and many craniofacial derivatives including facial bones, cartilage, teeth, and cranial ganglia. We have begun to investigate the origin of […]

PETERSEN, A.M.; GLEESON, T.T.; SCHOLNICK, D.A.: The influence of oxygen and adenosine on lizard thermoregulation Anapyrexia is a regulated drop in internal body temperature (Tb) employed across taxa in a protective role against metabolic trauma. A clear mechanism responsible for anapyrexia has yet to be determined. This study examined the possibility that anapyrexia is initiated […]

ETNIER, S.A.*; DEAROLF, J.L.; MCLELLAN, W.A.; PABST, D.A.: Postural control of lateral flexibility in neonatal dolphins (Tursiops truncatus) En utero, fetal bottlenose dolphins (Tursiops truncatus) are bent laterally such that the tail flukes and throat are juxtaposed. Dolphins begin swimming immediately after birth, yet the dorsoventral oscillations required to swim may be compromised by the […]

GROVE*, T J; SIDELL, B D: Examining Substrate Specificity of Fatty Acyl CoA Synthetase in Notothenioid Fishes Oxidative muscle tissues of Antarctic notothenioid fishes are more dependent upon lipids than carbohydrates as their main fuel for aerobic energy metabolism. These tissues further oxidize mono-unsaturated fatty acids more readily than saturated fatty acids. We hypothesize that […]

GARLAND, T.*; MORGAN, M.T.; SWALLOW, J.G.; RHODES, J.S.; GIRARD, I.; CARTER, P.A.: Evolution of a Small-muscle Polymorphism in Lines of House Mice Selected for High Activity Levels We conducted artificial selection to study the correlated evolution of locomotor behavior and exercise physiology. From the outbred Hsd:ICR strain, we began 8 closed lines, each of 10 […]

J�RGENSEN, E.H.*; BURKOW, I.C.; ANDERSSON, P.; JOBLING, M.; Norwegian Institute for Nature Research, Troms�, Norway; Norwegain institute for Fisheries and Aquaculture, Troms�, Norway; Ume� University, Ume�, Sweden; University of Troms�, Troms�, Norway: Winter emaciation potentiate responses to organochlorine pollutants in Arctic charr In the present study the toxicokinetics of polychlorinated biphenyls (PCBs) and associated hepatic […]

EDWARDS, Thea M.; BENSON, Neal; THRO, Matt; TOFT, Gunnar; GUILLETTE, Louis J.; University of Florida, Gainesville; University of Florida, Gainesville; University of Florida, Gainesville; University of Florida, Gainesville; University of Florida, Gainesville: Reduced sperm quality and seasonal reproductive variation in male Gambusia holbrooki (Eastern Mosquitofish) collected from contaminated versus reference lakes in Florida As an […]

MAHER, R.D.*; GRASMAN, K.A.; FOX, G.A.; MCNABB, F.M.A.; Virginia Tech, Blacksburg; Wright State, Dayton, OH; Environment Canada, Hull; Virginia Tech, Blacksburg: Polychlorinated Biphenyl (PCB) Inhibition of Thyroid Hormone (TH) Transport in Plasma Deposition into Oocytes Environmental PCBs are persistent contaminants that disrupt thyroid function in some mammals. Part of this disruption may result from displacement […]

HOPKINS, W.A.*; SNODGRASS, J.W.; BROUGHTON, J.; GWINN, D.C.; BAIONNO, J.A.; Savannah River Ecology Laboratory; Towson University; Towson University; Towson University; Savannah River Ecology Laboratory: Effects of coal combustion wastes on survival and development of larval anurans In recent years, numerous studies have documented the deleterious effects of aquatic disposal of coal combustion wastes (CCW) on […]