CHENG, C.-H.C.: Antifreeze glycoprotein genes in temperate water Notothenioid fish infer an Antarctic origin of speciation The perciform suborder of otothenioid fishes is indigenous to the Southern Ocean and largely endemic to the Antarctic region. Currently 8 families encompassing ~130 species are recognized. Twelve species makes up 3 basal, non-Antarctic families inhabiting the temperate regions […]

Yang, C.*; Cheng, C.-H.C.: Antifreeze Glycoprotein Genes in Arctic Cod: Gene Dosage, Structure, Organization and Evolution Antarctic notothenioids and northern cods are phylogenetically distant, but have convergently evolved near-identical antifreeze glycoproteins (AFGPs) to survive in their respective freezing marine environment. We have previously shown that Notothenioid AFGP gene evolved from a pancreatic trypsinogen-like protease gene, […]

Grasso, F.W.*; Basil, J.A.: Antennule Morphology and Olfactory Sampling strategy: Lessons from the lobster. The six, paired cephalic appendages of decapod crustaceans provide sensory information to the highest centers of the brain. These bear sensory organs devoted to one primary and a number of secondary sensory modalities and allow these animals to actively probe and […]

HOUCK, L.D.; WURST, G.Z.*; MOORE, F.L.: Androgen levels in breeding Utah tiger salamanders Many recent papers have investigated the relationship between plasma levels of testosterone (T) and male behavior during the breeding season. One question of interest is whether male reproductive behavior is associated or dissociated with maximal levels of circulating T. Data concerning patterns […]

HOLBERTON, R.L.*; WILSON, C.M.; HUNTER, M.J.; LEE, A.W.: An Endocrine Basis of Different Migratory Strategies in Long- and Short-distance Neotropical Migrants. Migratory birds show great variation in behavioral and physiological strategies for reaching their destinations. We are comparing behavior and physiology in two species of Neotropical migrants, the long-distance migrant, the Blackpoll warbler (Dendroica striata) […]

GOLEMAN, W.L.*; URQUIDI, L.J.; MCMURRY, C.S.; ANDERSON, T.A.; KENDALL, R.J.; CARR, J.A.: Amphibian Metamorphosis is Inhibited by Environmentally Relevant Concentrations of Ammonium Perchlorate Ammonium perchlorate (AP, NH4ClO4) has been used as an oxidizer component in solid rocket propellants for more than 50 yrs. AP detection in surface and ground waters near aerospace materials storage areas, […]

Cooper, R.L. *; Tabor, J; Chase, R.J.: Altered responsiveness to 5-HT at the crayfish neuromuscular junction: receptor up- & down-regulation Serotonin (5-HT)levels in the hemolymph of crustaceans has been implied to alter the assertiveness and aggression during social interactions (Huber et al., 1997; Sneddon et al., 2000). Pharmacological examination shows that m-CPP has agonistic functions […]

PFISTERMUELLER, R.*; TYLER, S.: Actin-rich sensory receptors in Convoluta pulchra (Platyhelminthes, Acoelomorpha) identified by correlative electron and fluorescence microscopy Phalloidin-stained whole mounts of acoel turbellarians show brightly fluorescing club-shaped structures distributed over the epidermis and concentrated especially at the anterior and posterior tips of the body. By correlating electron micrographic images and fluorescence images of […]

REES, B.B*; SUDRADJAT, F.A.; LOVE, J.W.: Acclimation to hypoxia increases survival time of zebrafish during lethal hypoxia Survivorship of zebrafish, Danio rerio, was measured during lethal hypoxic stress after pre-treatment in water at either ambient oxygen or at a lowered, but non-lethal, level of oxygen. Acclimation to non-lethal hypoxia (ca. 10% air-saturation) for 48 h […]

Garey, J. R.; Campbell, T. G.*: Acanthocephelan and Rotifer Relationships Revisited. The phylogenetic relationship between Rotifera and Acanthocephala has been a matter of debate for several years. Although these phyla are clearly related, the exact relationship between them had proven difficult to determine with only morphological data. Several phylogenetic analyses based on sequence data have […]