FREEMAN, A.S.: Grazing behavior of sea urchins in response to waterborne cues from predators Modification of prey behavior due to predation threats can have cascading impacts on other community members. This study explored how a threat of predation altered the grazing behavior of two sea urchins (Strongylocentrotus droebachiensis and S. franciscanus). Large and small sea […]

GORDON, RE; DUAN, C: Glycosylated and non-glycosylated insulin-like growth factor binding protein-5 (IGFBP-5) have different biological actions IGFBP-5 has been shown to either inhibit or potentiate IGF actions by modulating the IGF ligand and receptor interaction. IGFBP-5 has also been shown to have intrinsic biological activity that is ligand-independent. The molecular mechanism underlying this dual […]

LITZGUS, J.D.*; MOUSSEAU, T.A.: Geographic variation in clutch frequency in the spotted turtle (Clemmys guttata) We examined the reproductive output of spotted turtles (Clemmys guttata) from a population in South Carolina, near the southern extreme of the species’ range. We used radio telemetry, palpation, and x-rays to monitor the reproductive condition of females over two […]

GIENGER, C.M.*; TRACY, C. RICHARD: Geographic Variation in Activity of the Gila Monster. The Gila monster (Heloderma suspectum) is a conspicuous, but infrequently encountered species distributed across the hot deserts of the the American southwest. It’s infrequent activity and low population densities make intensive field study difficult, and information regarding this species is limited. To […]

MCCONNELL, M.J.*; REHEN, S.K.; KAUSHAL, D.; KINGSBURY, M.A.; YANG, A.H.; CHUN, J.: Genetic Mosaicism During Mammalian Neurogenesis The mammalian central nervous system is composed of a diverse array of cell types. It is thought that this diversity arises from transcriptional and post-transcriptional modification of large gene families from a constant genome. Using fluorescence immunohistochemistry on […]

DESAI, Sheetal; RAGUSO, Robert A.: Flower morphology, learning ability and nectar discovery time by na�ve Manduca sexta. The energetic demands of hovering flight require many hawkmoths (Lepidoptera; Sphingidae) to forage for energy-rich floral nectars. Hawkmoths feed from a wide variety of flowers, and plants expend significant energy to compete for their attention as pollinators. If […]

RIFFELL, J.A.*; KRUG, P.J.; ZIMMER, R.K.: Fertilization in the sea: Isolation and purification of abalone sperm chemoattractant Sperm chemotaxis mediates fertilization in the free-spawning red abalone, Haliotis rufescens. In laboratory bioassays, sperm responded to a chemical attractant released by conspecific eggs and exhibited both activation and orientation. Computer-assisted video motion analysis demonstrated that sperm doubled […]

CASTELLANO,, M.; HARA,, E.; HEWS,, D. K. : Female Sceloporus virgatus lizards exhibit a left eye – right hemisphere preference when performing aggressive rejection displays to conspecific males In a small but taxonomically diverse number of vertebrates, there is a left-eye preference / right hemisphere specialization for aggression. Laterality for aggression has been demonstrated only […]

SPEER, T.*; MARTIN, K.: Events at hatching in eggs of the California grunion fish, Leuresthes tenuis The moment of hatching is a turning point in the life of any animal, but when an egg hatches quickly in response to an environmental trigger, the process is particularly intriguing. California grunion fish spawn terrestrially during semilunar high […]

TILLMAN, EG*; OLSON, JR; HATLE, JD; JULIANO, SA: Estimating a threshold of hemolymph proteins necessary for reproduction of lubber grasshoppers The reproductive cycle of Romalea microptera is divided into two phases: an early plastic phase during which feeding rate affects timing of reproduction, and a later canalized phase during which feeding does not affect timing. […]