CHENG, A.*; MERZ, R.A.; Swarthmore College; Swarthmore College: Solutions to staying put: Two sticky scyphozoans Although most scyphozoans are pelagic, a few such as Cassiopea and Haliclystus have become benthic. Cassiopea live their medusoid lives resting on coral or sandy bottoms, pulsating upside-down in shallow waters, exposing zooxanthellae within their oral arms to light. Haliclystus […]

BARTIK, L.; UDOVICH, J.; RAGHUNAND, N.; GMITRO, A.F.; JOB, C.; KLEE, V.; WEINSTEIN, R.B.; Univ. of Arizona, Tucson: Simultaneous measurement of muscle force and 31P-magnetic resonance spectroscopy indicates a rapid recovery of inorganic phosphate in ghost crab extensor carpopodite. Ghost crabs exercising to fatigue at a speed faster than their maximum aerobic speed (MAS) on […]

TIERNEY, A.J.*; AIG, S.D.; PERNA, A.M.; Colgate University; Colgate University; Colgate University: Serotonin and behavior in two crayfish species, Procambarus clarkii and Orconectes rusticus: effects of 5-HT1 and 5-HT2 receptor agonists. Exogenous 5-HT induces an elevated, flexed posture in decapod crustaceans and has also been shown to affect aggressive and motor behaviors. Previous research has […]

OWEN-ASHLEY , N. T.*; WINGFIELD, J. C.; Univ. of Washington, Seattle; Univ. of Washington, Seattle: Seasonal differences in expression of sickness behavior after experimental ‘pseudoinfection’ in free-living song sparrows (Melospiza melodia morphna) Animals exposed to pathogens initiate an array of adaptive behaviors, such as fever, anorexia, and reduced activity, which jointly divert energy away from […]

NELSEN, MC; DAWLEY, EM; Ursinus College, Collegeville, PA: Seasonal Chemoreceptor Birth and Death The olfactory epithelium of vertebrates includes stem cells that generate new receptor cells throughout life, presumably to replace damaged cells. However, the chemosensory system of red-backed salamander, Plethodon cinereus changes on a seasonal basis. An increase in size of the main olfactory […]

TSENG, Yung-Che; HWANG, Pung-Pung; Institute of Fisheries Science, National Taiwan University; Institute of Zoology, Academia Sinica: Role of Glycogen Phosphorylase in Energy Supplying for Osmoregulation in Tilapia (Oreochromis mossambicus ) Upon external salinity challenges, euryhaline teleosts perform rapid modulations of functions of several ion transporters or channels in gills to maintain the internal homeostasis. Ion- […]

GILBERT, D.*; MCINTYRE, P.B.; MICHEL, E.; MULONGAIBALU, M.; SAPP, J.; Massachusetts Institute of Technology, Cambridge; Cornell University, Ithaca, NY; University of Amsterdam, Netherlands; University of Kisangani, Democratic Republic of Congo; University of California, Berkeley: Responses of herbivorous cichlid fishes to anthropogenic sedimentation in Lake Tanganyika Anthropogenic sedimentation poses a serious threat to littoral communities in […]

ELF, P.K.*; RHEN, T.; FIVIZZANI, A.J.; CREWS, D.; University of Minnesota Crookston; University of North Dakota, Grand Forks; University of North Dakota, Grand Forks; University of Texas Austin: Relationships between female circulating plasma hormones and hormones deposited in eggs of the leopard gecko, Eublepharis macularius. Hormones deposited in the yolks of eggs during vitellogenesis are […]

WHITE, M.A.*; CORLEY, L.S.; Washington State University; Washington State University: Regulation of cellular proliferation during polyembryony in Copidosoma floridanum Striking morphological differentiation among individuals structures the complex societies found in insects such as termites, bees, and ants. Castes have also evolved in other insects such as aphids, thrips and polyembryonic wasps. Copidosoma floridanum is a […]

HORTIN, SM*; SOMLEY, BL; JOHNSON, JC; PROOPER, CR; Northern Arizona University; Northern Arizona University; Northern Arizona University; Northern Arizona University: Reclaimed Wastewater Does Not Induce Androgenic Effects in a Bioassay Using Gambusia affinis as an in vivo Model Wastewater has been demonstrated to contain several endocrine disrupting compounds in samples taken downstream from production plants […]