GIFONDORWA, D.J.; LEISE, E.M.: Does the Apical Ganglion Undergo a Form of Programmed Cell Death during Metamorphosis in Ilyanassa obsoleta The apical ganglion (AG), also known as the apical sensory organ, is an unpaired ganglion that contains approximately 25 neurons in competent larvae of the marine gastropod Ilyanassa obsoleta. This ganglion is anterior to the […]

BEVIER, C.R.*; GOMES, F.R.; NAVAS, C.A.: Diversity of calling behavior within a genus of tropical treefrogs: relationships with habitat structure and energetics Calling behavior in frogs is a highly diverse activity with remarkable interspecific variation in call structure and calling effort, even within a single genus. We explored interspecific variation in calling behavior in eight […]

XU, Q; LI, S; DUAN, C: Differential subcellular localization of IGFBP-4 and IGFBP-5 is determined by their distinct C-domains IGFBP-4 and -5 are closely related members of the IGFBP gene family. Thy share similar domain structures, substantial sequence identity, and the ability to bind IGFs with high affinities. Despite these similarities, they have differential subcellular […]

BIRD, N.C.*; MABEE, P.M.: Development of the Axial Skeleton in the Zebrafish, Danio rerio Although the zebrafish, Danio rerio, is used extensively as a model organism for genetic and developmental studies, no data on the developmental morphology of the vertebral column and associated structures are available. Using whole mount staining we are developing a baseline […]

WIBBELS, T.; MURDOCK, C.; ZELICKSON, M.; SPARKS, K.: Development of a quantitative competitive RT-PCR for Dmrt1 in a turtle with temperature-dependent sex determination. The Dmrt1 gene appears to be involved in gonadal development in a variety of vertebrates. Expression patterns in mammals suggest that this gene could be involved in male sex determination and/or testicular […]

RICH, E.L.*; ROMERO, L.M.: Corticosterone response to variable doses of dexamethasone, CRF and ACTH in the European Starling (Sturnus vulgaris) Captive European Starlings were used to determine dose-dependant responses of the Hypothalamus-Pituitary-Adrenal (HPA) axis to exogenous ACTH, CRF or dexamethasone (dex). Ten wild starlings were held in the laboratory on a short-day photoperiod (11L:13D). Between […]

JENNINGS, D.H.*; RUYS, J.D.; MOORE, M.C.; ORCHINIK, M.: Corticosterone regulation of plasma steroid-binding globulin levels and free steroid hormone levels in Tree lizards, Urosaurus ornatus. In vertebrates, steroids circulate bound to specific plasma steroid-binding globulins. Binding globulins potentially regulate steroid actions at a number of levels including steroid metabolism, availability of free steroids, and tissue-specific […]

STROTHER, James*; KOEHL, M.A.R.; REIDENBACH, Matthew; HADFIELD, Michael G.: Computer simulations of larval behavior in wave-driven flow predict settling usccess in resposne to soluble cues Can chemical cues in the water affect the settlement of larvae of benthic marine invertebrates in habitats subjected to the wave-driven water flow that characterizes many coastal habitats? We addressed […]

ALKINDI, Abdulaziz Y.A.; MAHMOUD, Ibrahim Y.; BATCHELOR, Christopher; KHAN, Hamid R.: Circulating steroid hormone levels during high and low density nesting periods in the Green Turtle, Chelonia mydas in Oman Plasma steroid levels (progesterone, testosterone and estradiol) were monitored during high (June-October) and low (November-May)density nesting periods at Ras Al-Hadd, Oman. The examined turtles had […]

RUMBLE, J.*; MARTIN, K.; VANDERGON, T.: Choriolytic enzyme in the California grunion fish, Leuresthes tenuis The grunion Leurethes tenuis, a southern California fish, has the only known vertebrate eggs that do not hatch unless presented with a mechanical trigger. Grunion fish spawn terrestrially on the spring tide, leaving their eggs to incubate in the sand. […]