FISH, Frank E.; MIKLOSOVIC, David S.; MURRAY, Mark M.; HOWLE, Laurens E.; West Chester University; U.S. Naval Academy; U.S. Naval Academy; Duke University: Delayed stall due to leading edge tubercles of the humpback whale flipper The humpback whale (Megaptera novaeangliae) is exceptional among the baleen whales in its ability to undertake acrobatic underwater maneuvers. In […]
year: 2004
Batoid wing skeletons a comparison of oscillatory and undulatory swimmers
SCHAEFER, J.S.; Univ. of California, Irvine: Batoid wing skeletons: a comparison of oscillatory and undulatory swimmers The skeleton of the wings of skates and rays consists of a series of radially oriented cartilaginous fin rays fanning out from the pectoral girdle. Each fin ray is segmented into longitudinally oriented skeletal elements, traditionally represented as simple […]
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 […]
Biomechanics of insect respiration and feeding using synchrotron x-ray imaging
LEE, W-K.; HARRISON, J.; GREENLEE, K.; BETZ, O.; WESTNEAT, M.; Argonne National Laboratory; Arizona State University; Arizona State University; University of Kiel, Germany; Field Museum of Natural History: Biomechanics of insect respiration and feeding using synchrotron x-ray imaging The motions of internal structures of insects and other small animals during behaviors such as respiration and […]
Seasonal variations in membrane acyl composition and mitochondrial respiratory rate of muscle tissues in European hedgehogs suggest cardiac tissue is preacclimated to hibernation
THORNTON, S.J.; DANIEL, K.*; HULBERT, A.J.; University of British Columbia, Vancouver, Canada; University of Otago, Dunedin, New Zealand; University of Wollongong, Australia: Seasonal variations in membrane acyl composition and mitochondrial respiratory rate of muscle tissues in European hedgehogs suggest cardiac tissue is preacclimated to hibernation During hibernation, polyunsaturation of phospholipids increases to maintain membrane fluidity […]
