HARTMAN, M.J.*; STANCYK, S.E.; LOHRER, A.M.; Univ. of South Carolina, Columbia; Univ. of South Carolina, Columbia; National Inst. for Water & Atmospheric Research, Hamilton, New Zealand: Native predators and the success of a newcomer, Petrolisthes armatus, the green porcelain crab to an oyster reef ecosystem in North Inlet, SC Invasive species often experience large increases […]
sessions: Session 24
Egg development affects the foraging strategy of wasps preying on red-eyed tree frog eggs
BUCKLEY, Christine R.; METCALF, Kelly A.; WARKENTIN, Karen M.; Tulane University; Boston University; Boston University: Egg development affects the foraging strategy of wasps preying on red-eyed tree frog eggs The red-eyed tree frog Agalychnis callidryas lays its eggs on plants overhanging ponds throughout Central America. Recent studies show that embryos can alter their hatching timing […]
Effect of body size on fast-start performance in the Pacific staghorn sculpin, Leptocottus armatus
LEVINE, Robert P.*; STANDEN, Em; BRAINERD, Elizabeth L.; DOMENICI, Paolo; Univ. of Massachusetts, Amherst; Univ. of British Colombia, Canada; Univ. of Massachusetts, Amherst; International Marine Center, Loc. Sa Mardini, Italy: Effect of body size on fast-start performance in the Pacific staghorn sculpin, Leptocottus armatus The effect of body size on fast-start performance in fishes has […]
Cryptic species, cryptic endosymbionts, and geographic variation in chemical defenses in the bryozoan Bugula neritina
MCGOVERN*, Tamara M.; HELLBERG, Michael E.; Friday Harbor Labs, Friday Harbor; Louisiana St. Univ., Baton Rouge: Cryptic species, cryptic endosymbionts, and geographic variation in chemical defenses in the bryozoan Bugula neritina Molecular markers often offer the only way to discriminate between species and to elucidate the specificity of many community interactions, both of which are […]
Temperature-oxygen interactions in developing eggs of a moth, Manduca sexta
WOODS, HA; HILL, RI; Univ. of Texas, Austin; Univ. of Texas, Austin: Temperature-oxygen interactions in developing eggs of a moth, Manduca sexta Insect embryos support metabolism with oxygen obtained from the environment by diffusion across the eggshell. Thus the oxygen partial pressure (PO2) inside an egg depends on relative rates of oxygen supply and demand. […]
Telomerase expression and lifespan the short and long of it
HAUSSMANN, M.F.; VLECK, C.M.; Iowa State Univ., Ames; Iowa State Univ., Ames: Telomerase expression and lifespan: the short and long of it One cannot consider the wide variation in lifespans of different species without reflecting on the underlying physiological or molecular mechanisms. One potential mechanism is telomere regulation. Shortening of telomeres causes cellular senescence, which […]
Gene expression of trypsin by in situ hybridization in carnivorous and herbivorous prickleback fishes (Stichaeidae) ontogenetic, dietary, and phylogenetic effects
GAWLICKA, A.; HORN, M.H.; California State Univ., Fullerton; California State Univ., Fullerton: Gene expression of trypsin by in situ hybridization in carnivorous and herbivorous prickleback fishes (Stichaeidae): ontogenetic, dietary, and phylogenetic effects We measured intensity of trypsin gene expression in four species of carnivorous and herbivorous stichaeid fishes and determined the effects of ontogeny, diet, […]
Gene expression of α-amylase by in situ hybridization in carnivorous and herbivorous prickleback fishes ontogenetic, dietary, and phylogenetic effects
KIM, K.H.*; HORN, M.H.; California State University, Fullerton: Gene expression of α-amylase by in situ hybridization in carnivorous and herbivorous prickleback fishes: ontogenetic, dietary, and phylogenetic effects We measured the intensity of α-amylase gene expression in four species of carnivorous and herbivorous prickleback fishes (family Stichaeidae) and determined the effects of ontogeny, diet, and phylogeny […]
Effects of development, surface exposure, and embryo behavior on oxygen levels in red-eyed treefrog eggs
WARKENTIN, KM; GOMEZ-MESTRE, I; Boston University; Boston University: Effects of development, surface exposure, and embryo behavior on oxygen levels in red-eyed treefrog eggs The red-eyed treefrog, Agalychnis callidryas, deposits gelatinous egg masses on vegetation over water. Although development is highly synchronous, the embryonic period varies by about 30%, depending on exposure to egg predators and […]
Discontinuous gas exchange and respiratory water loss during hypoxia challenge
LIGHTON, J.R.B.; TURNER, R.J.; Univ of Nevada Las Vegas & Sable Systems; SpanLabs, Inc, Las Vegas NV: Discontinuous gas exchange and respiratory water loss during hypoxia challenge The fact that many adult insects undergo a discontinuous gas exchange cycle (DGC) is well documented, but the selective advantages of the DGC remain controversial. Though usually considered […]
