SMITH, Kathleen K; VAGLIA, Janet: Early development of the cranial neural crest, neural tube and paraxial mesoderm in marsupials. Marsupial mammals are highly altricial at birth when compared to most other amniotes, yet the neonate must possess adaptations to allow it to independently travel to, identify and attach to the teat, suckle and process food […]

DICKINSON, A.J.G.*; CROLL, R.P.: Early Development and Cell Fate Specification of the Larval Nervous System and Musculature of the Prosobranch Mollusc Ilyanassa obsoleta Molluscs have served as important models for understanding early developmental cleavage programs. While the cell lineages of the prosobranch Ilyanassa obsoleta have been thoroughly investigated, the origins and mechanisms in which individual […]

HERNANDEZ, L.P.*; DEVOTO, S.H.: Distribution and development of cranial slow muscle fibers in zebrafish The distribution of muscle fiber types within cranial musculature has great physiological implications for both feeding and breathing in fishes. While the distribution and development of slow muscle fibers in the trunk of zebrafish have been well described, cranial muscles have […]

ERICSSON, R; FALCK, P; JOSS, J; OLSSON, L: Development of the Larval Head in Australian Lungfish and Mexican Axolotl Development of the larval head in Australian lungfish and Mexican axolotl. Lungfishes are the extant sister group to tetrapods, so a comparison of lungfishes and salamanders span the transition from a totally aquatic to a biphasic […]

TEMPLE, J.G.*; LAITALA, L.; Univ. of Mary Washington; Univ. of Mary Washington: Uptake and Metabolism of orally administered serotonin in the plasma of toad-eating and non-toad-eating snakes American species of toads produce skin secretions that induce severe physiological effects when ingested by some potential predators including black rat snakes (Elaphe o. obsoleta). However, eastern hognose […]

CAVIEDES-VIDAL, E.; CHEDIACK, J.G.; CRUZ-NETO, A.P.; KARASOV, W.H.*; Universidad Nacional de San Luis; Universidad Nacional de San Luis; Universidade Estadual Paulista; University of Wisconsin, Madison: Sugar absorption in bats. Are they mammals or birds? Absorption by the paracellular pathway is a declining function of molecule size, probably due to sieving in the tight junction between […]

MCWHORTER, T.J.; KARASOV, W.H.; GREEN, A.K.; Univ. of Wisconsin, Madison: How the American robin absorbs glucose American robins (Turdus migratorius) assimilated 92 � 2 % of D-glucose and 92 � 14% of L-glucose, the stereioisomer not actively transported. Does this finding, similar to that found in other birds with diverse diet and taxonomic associations, confirm […]

GIBBS, V.K.*; WATTS, S.A.; Univ. of Alabama at Birmingham: Exposure temperature affects biochemical and cellular composition of the gonad in the sea urchin Lytechinus variegatus (Echinodermata: Echinoidea) Temperature is one of the most important proximate factors affecting the biology of ectothermal organisms. In Lytechinus variegatus, water temperature affects the reproductive cycle in field populations, suggesting […]

HALEY, S.H.; LAMB, J.G.; DEARING, M.D.; University of Utah, Salt Lake City: Detoxification of plant secondary compounds in creosote (Larrea tridentata) by a woodrat herbivore Neotoma lepida Dietary specialization in mammalian herbivores is extremely rare. Existing mammalian specialists are believed to express a unique pattern of induced detoxification enzymes that permit elimination of the large […]

STONE, M.D.**; HELLGREN, E.C.; Oklahoma State University; Southern Illinois University: Thermal Variation in the Microhabitat of the Texas Tortoise (Gopherus berlandieri) Texas tortoises potentially experience harsh thermal regimes during summer months. It is therefore likely that environmental temperature significantly influences activity patterns. Although thermoregulatory and heat exchange studies have been conducted on Gopherus berlandieri, few […]