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Creator | Title | Description | Subject | Date |
| 251 |
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Coley, Phyllis D. | Beneficios y costos de defensa en un arbusto del neotrópico | LOS beneficios y costos son de importancia capital para las teorfas de optimization de las defensas de las plantas. El beneficio es la ganancia de aptitud para reducir el herbivorismo; el costo es la perdida de aptitud al comprometer recursos en defensa. Evaluamos los beneficios y los costos de def... | Psychotria horizontalis; Isla de Barro Colorado; Costos de defense; Celdas de exclusion; Herbivorismo; Defensa de las plantas; Taninos; Dureza; Tropicos; Benefit; Beneficios | 2007 |
| 252 |
 |
Olivera, Baldomero M.; Gray, William Robert; McIntosh, J. Michael | New α-conotoxin which targets α3ß2 nicotinic acetylcholine receptors | We have isolated a 16-amino acid peptide from the venom of the marine snail Conus magus which potently blocks nicotinic acetylcholine receptors (nAChRs) composed of α3ß2 subunits. This peptide, named a-conotoxin MII, was identified by electrophysiologically screening venom fractions against cl... | Conotoxins; a-conotoxin MII; Conus magus | 1996 |
| 253 |
 |
Linton, Matthew J. | Hydraulic conductivity, xylem cavitation, and water potential for succulent leaves of agave deserti and agave tequilana | Axial hydraulic conductivity (Kh) was measured for fresh, dehydrated, and rehydrated leaves of the Crassulacean acid metabolism (CAM) leaf succulents, Agave deserti and Agave tequilana. Dehydration of leaves at 35(o)C for several hours caused Kh to decrease, with a 50% decrease occurring at a leaf w... | Transpiration; Dehydrated; Drought | 2001 |
| 254 |
 |
Clayton, Dale H. | Biology, ecology, and evolution of chewing lice | Chewing lice are small, dorsoventrally compressed insects and are parasites of virtually all birds (Fig. 1) and some mammals (Fig. 2). Many chewing lice are host specific, being found on only a single species of host. All chewing lice are permanent ectoparasites and complete their entire life c... | Chewing lice | 2003 |
| 255 |
 |
Olivera, Baldomero M.; Gray, William Robert | Peptide toxins from Conus geographus venom | The biochemical characterization of three highly toxic peptides from the venom of the marine snail Conus geographus is described in this report. These peptides cause their potent activity by inhibition of the postsynaptic terminus of the vertebrate neuromuscular junction. The relatively small size o... | Conus geographus; Venom; Conotoxins; Neurotoxins | 1981 |
| 256 |
 |
Shapiro, Michael D. | Divergence, convergence, and the ancestry of feral populations in the domestic rock pigeon | | Stringham, Sydney A.; Mulroy, Elisabeth E.; Xing, Jinchuan; Record, David; Guernsey, Michael W.; Aldenhoven, Jaclyn T.; Osborne, Edward J. | |
| 257 |
 |
Adler, Frederick R. | Information collection and spread by networks of patrolling ants | To study how a social group, such as an ant colony, monitors events occurring throughout its territory, we present a model of a network of patrolling ants engaged in information collection and dissemination. In this network, individuals follow independent paths through a region and can exchange sign... | Patrolling network; ant colony; information-gathering | 1992 |
| 258 |
 |
Clayton, Dale H. | Ecoimmunity in Darwin's finches: invasive parasites trigger acquired immunity in the medium ground finch (Geospiza fortis) | Invasive parasites pose a serious threat to native animal populations, because hosts with no history of exposure may lack effective immune defenses. Invasive parasites are a particular threat to small, island populations [1,2]. For example, introduced malaria (Plasmodium relictum) has exacerbated t... | Darwins finches; Ecoimmunity; Acquired immunity; Medium ground finch; Geospiza fortis; Invasive parasites; Novel parasites; Poxvirus avium; Nest flies; Philornis downsi | 2010-01-06 |
| 259 |
 |
Adler, Frederick R. | Do rhinoviruses follow the neutral theory? The role of cross-immunity in maintaining the diversity of the common cold | Over 100 serotypes of rhinoviruses, one of the primary causes of the common cold, co-circulate in the human population. This high diversity makes it effectively impossible to develop a vaccine, even for those at risk of complications due to asthma or cystic fibrosis. | Serotypes; mutation rate; immunodominance | 2006 |
| 260 |
 |
Blair, David F. | Chemical and spectroscopic evidence for the formation of a ferryl Fea3 intermediate during turnover of cytochrome c oxidase | When partially reduced cytochrome c oxidase samples are reoxidized with dioxygen, an EPR-silent dioxygen intermediate, which is at the three-electron level of dioxygen reduction, is trapped at the dioxygen reduction site. The intermediate has novel spectral features at 580 and 537 nm. Combined op... | Cytochrome c oxidase; EPR; Fea3 intermediate; Reduction | 1986 |
| 261 |
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Beckerle, Mary C.; Hoffman, Laura M.; Yoshigi, Masaaki | Genetic ablation of zyxin causes Mena/VASP mislocalization, increased motility, and deficits in actin remodeling | Focal adhesions are specialized regions of the cell surface where integrin receptors and associated proteins link the extracellular matrix to the actin cytoskeleton. To define the cellular role of the focal adhesion protein zyxin, we characterized the phenotype of fibroblasts in which the zyxin gene... | Zyxin; Actin; Mena/VASP | 2006 |
| 262 |
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Ehleringer, James R.; Cerling, Thure E.; Dearing, Maria-Denise | Experimental study of carbon-isotope fractionation between diet, hair, and feces of mammalian herbivores | The carbon-isotope composition of hair and feces offers a glimpse into the diets of mammalian herbivores. It is particularly useful for determining the relative consumption of browse and graze in tropical environments, as these foods have strongly divergent carbon-isotope compositions. Fecal ?13C v... | Fractionation; Mammalian herbivores; Medicago sativa; Cynodon dactylon | 2003 |
| 263 |
 |
Potts, Wayne K. | Gong method for capturing shorebirds and other ground-roosting species | In many shorebird studies it is necessary to capture adult birds. While shorebirds can often be trapped on the nest, capturing them away from the nest is usually very difficult and may require expensive equipment. After weeks of failure in our attempts to capture migrant and resident shorebirds in n... | Gong method; Shorebirds; Capture; Ground-roosting | 1979 |
| 264 |
 |
Seger, Jon | Natural history and evolution of paper-wasps | Paper-wasps occupy a special place in the history of animal behavior. Temperate species o f Polistes are large, beautiful, intelligent, adaptable, easy to observe, and thoroughly committed to social life. They are also aptly named, being intensely political, in the limited sense that any nonhuman an... | Individuals; Excellent; Phylogeny | 1997 |
| 265 |
 |
Ehleringer, James R. | Burning coal seams in southern Utah: a natural system for studies of plant responses to elevated CO2 | In the Burning Hills and Smoky Mountains of southern Utah (USA), coal deposits exposed to the surface have been ignited by lightning and have been burning for periods of years to over a century. We examined one of these sites, where the below-ground combustion of this low-sulfur coal releases gases ... | Coal fires; Elevated CO2; Isotope ratios; Atriplex confertifolia; Salsola iberica; Gutierrezia sarothrae | 1997 |
| 266 |
 |
Olivera, Baldomero M.; Parks, Thomas N. | Conantokin-T: a γ-carboxyglutamate containing peptide with N-methyl-D-aspartate antagonist activity | Conantokin-T, a 21-amino acid peptide which induces sleep-like symptoms in young mice was purified from the venom of the fish-hunting cone snail, Conus tulipa. The amino acid sequence of the peptide was determined and verified by chemical synthesis. The peptide has 4 residues of the modified amino ... | Conotoxins; Conantokin-T; N-methyl-D-aspartate antagonist; Conus tulipa | 1990 |
| 267 |
 |
Olivera, Baldomero M.; Gray, William Robert; Hillyard, David R. | μ-Conotoxin PIIIA, a new peptide for discriminating among tetrodotoxin-sensitive Na channel subtypes | We report the characterization of a new sodium channel blocker, m-conotoxin PIIIA (m-PIIIA). The peptide has been synthesized chemically and its disulfide bridging pattern determined. | Conotoxins; m-Conotoxin PIIIA; Sodium channel blockers | 1998 |
| 268 |
 |
Ehleringer, James R. | Carbon isotope ratios of Atacama Desert plants reflect hyperaridity of region in northern Chile | Leaf carbon isotope ratios were measured on plants from the coastal portions of the Atacama Desert at Pan de Azucar and Paposo, Chile. Most species possessed C3 photosynthesis, although there were several CAM species, indications of some facultative CAM species, and only one C4 species. The carbon i... | Atacama Desert; Carbon isotope ratio; Intercellular carbon dioxide concentration; Hyperaridity | 1998 |
| 269 |
 |
Adler, Frederick R. | Construction of multidimensional clustered patterns | Ecological processes often depend upon the patterning, as well as the absolute density, of resources. In this paper, we develop methods for describing pattern from the perspective of the organism encountering and exploiting the resources, and for reconstructing pattern from the description. | Algorithms; clustered resources; foraging | 1994 |
| 270 |
 |
Adler, Frederick R.; Liou, Theodore G.; Cahill, Barbara C. | Selection of patients with cystic fibrosis for lung transplantation | Lung transplantation is the most aggressive therapy available for end-stage lung disease from cystic fibrosis (CF). A new predictive survival model of CF uses demographic, FEV1, nutritional, microbiologic, and acute exacerbation data to produce precise estimates of 5-year survival. | Predicted survival; Living donor; Mechanical ventilation | 2002 |
| 271 |
 |
Olivera, Baldomero M.; Gray, William Robert; McIntosh, J. Michael | Neuronal calcium channel inhibitors: synthesis of ω-conotoxin GVIA and effects on 45Ca-uptake by synaptosomes | We previously described a 27-amino acid peptide neurotoxin from the venom of Conus geographus, wconotoxin GVIA, which inhibits neuronal voltage-activated calcium channels. In this paper we describe the total synthesis of ω-conotoxin GVIA and demonstrate that it efficiently blocks voltage-activat... | Neuronal calcium; Calcium channels; Channel inhibitors; [omega]-conotoxin GVIA | 1987 |
| 272 |
 |
Olivera, Baldomero M. | Block of Shaker K+ channels by ĸ-conotoxin PVIIA is state dependent | ĸ-conotoxin PVIIA is the first conotoxin known to interact with voltage-gated potassium channels by inhibiting Shaker-mediated currents. We studied the mechanism of inhibition and concluded that PVIIA blocks the ion pore with a 1:1 stoichiometry and that binding to open or closed channels is very d... | Conotoxins; k-conotoxin PVIIA; Potassium channel blockers; Shaker K+ channels | 1999 |
| 273 |
 |
Ehleringer, James R. | Responses of boreal conifers to climate fluctuations: indications from tree-ring widths and carbon isotope analyses | Spatial distribution and species composition of the boreal forest are expected to change under predicted climate change scenarios. Current research indicates that water limitations control the southern boundary of the central Canadian boreal forest and temperature limitations control the northern b... | Boreal forests; Carbon budget; Picea mariana; Pinus banksiana; Carbon isotopes | 1998 |
| 274 |
 |
Farmer, Colleen G. | Dendrobates auratus (green and black poison dart frog). Larval Predation | Dendrobates auratus was intentionally introduced onto the island of O'ahu, Hawai'i in 1932 from Taboga Island, Panama for mosquito control. Phelsuma laticauda was accidentally introduced from Madagascar in 1996 to the University of Hawaii at Manoa. Both species are well established in the Manoa Val... | Dendrobates auratus; Phelsuma laticauda | 2007 |
| 275 |
 |
Farmer, Colleen G.; Carrier, David R. | Integration of ventilation and locomotion in archosaurs | Movements of the pelvis have recently been found to contribute to ventilation in both crocodilians and birds. Alligators have a kinetic pelvis in which the ischiopubic and ischiotruncus muscles rotate the pubic bones ventrally to increase abdominal volume and thereby facilitate inspiration. In birds... | Archosaurs; Theropods; Integration; Ventilation; Pelvic aspiration; Cuirassal breathing | 2000 |
