Filters: Department: "Biology" School Or College: "College of Science" Collection: "ir_uspace" Type: "Text" Format: "application/pdf"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 401 |
 |
Rogers, Alan R. | How much can fossils tell us about regional continuity? | Presents a study on the genetic contribution of earlier populations to later populations within regions called regional continuity. Testing for regional continuity with multiple characters; Replacement of archaic population by a population of modern humans. | Human genetics; Fossils; Regional continuity | 2006-06-05 |
| 402 |
 |
Davidson, Diane W.; Rickart, Eric Allan; Keiter, Robert B. | Selecting wilderness areas to conserve Utah's biological diversity | Congress is currently evaluating the wilderness status of Bureau of Land Management (BLM) public lands in Utah. Wilderness areas play many important roles, and one critical role is the conservation of biological diversity. | Bureau of Land Management; Conservation; Endemic species; Exotic species; Cryptobiotic soils; Plants; Bees; Vertebrates | 1996 |
| 403 |
 |
Shapiro, Michael D. | Turnover of sex chromosomes in the stickleback fishes (Gastrosteidae) | Diverse sex-chromosome systems are found in vertebrates, particularly in teleost fishes, where different systems can be found in closely related species. Several mechanisms have been proposed for the rapid turnover of sex chromosomes, including the transposition of an existing sex-determination gen... | Sex determination; Gasterosteus aculeatus; Gasterosteus wheatlandi; Pungitius pungitius; Culaea inconstans; Apeltes quadracus; Gasterosteidae | 2009-02-20 |
| 404 |
 |
Ehleringer, James R. | Implications of CO2 pooling on δ13C of ecosystem respiration and leaves in Amazonian forest | The carbon isotope of a leaf (δ13Cleaf) is generally more negative in riparian zones than in areas with low soil moisture content or rainfall input. In Central Amazonia, the small-scale topography is composed of plateaus and valleys, with plateaus generally having a lower soil moisture status ... | Amazonia; Carbon dioxide; Oxygen isotope ratio; Respiration; Soil water content | 2008 |
| 405 |
 |
Beckerle, Mary C. | Interaction between zyxin and α-actinin | Zyxin is an 82-kD protein first identified as a component of adhesion plaques and the termini of stress fibers near where they associate with the cytoplasmic face of the adhesive membrane. We report here that zyxin interacts with the actin cross-linking protein α-actinin. | Zyxin; Actinin; Actin | 1992 |
| 406 |
 |
Capecchi, Mario R.; Tvrdik, Petr | Hoxb1 functions in both motoneurons and in tissues of the periphery to establish and maintain the proper neuronal circuitry. | Formation of neuronal circuits in the head requires the coordinated development of neurons within the central nervous system (CNS) and neural crest-derived peripheral target tissues. Hoxb1, which is expressed throughout rhombomere 4 (r4), has been shown to be required for the specification of facial... | Rhombomere 4; Branchiomotor; Cranial Nerve | 2004-07-04 |
| 407 |
 |
Ehleringer, James R. | Intra- and interspecific variation for summer precipitation use in pinyon-juniper woodlands | In the arid southwest of North America, winter precipitation penetrates to deep soil layers, whereas summer"monsoon" precipitation generally wets only surface layers. Use of these spatially separated water sources was determined for three dominant tree species of the pinyon-juniper ecosystem at six ... | D/H ratios; Juniperus osteosperma; Pinus edulis; pinyon-juniper ecosystem; plant water sources; precipitation use; Quercus gambelii; roots; Photosynthetic gas exchange; Monsoon | 2000 |
| 408 |
 |
Olivera, Baldomero M. | Novel venom peptides from the cone snail Conus pulicarius discovered through next-generation sequencing of its venom duct transcriptome | The venom peptides (i.e., conotoxins or conopeptides) that species in the genus Conus collectively produce are remarkably diverse, estimated to be around 50,000 to 140,000, but the pace of discovery and characterization of these peptides have been rather slow. To date, only a minor fraction have be... | 2012 | |
| 409 |
 |
Bastiani, Michael | Pathfinding by neuronal growth cones in grasshopper embryos: IV. The effects of ablating the A and P axons upon the behavior of the G growth cone | In the companion paper (Bastiani, M. J., J. A. Raper, and C. S. Goodman (1984) J. Neurosci. 4: 2311-2328), we show that as the G growth cone reaches its choice point and turns anteriorly on the A/P fascicle, its filopodia demonstrate selective affinity for the A/P fascicle as compared to the other a... | Labeled pathway; Anterior extension; Fascicle | 1984 |
| 410 |
 |
Goller, Franz | Muscular control and biomechanics of the songbird syrinx | In songbirds the vocal organ, the syrinx, is controlled by six bilateral muscles, the functional roles of which have been studied indirectly, but not directly. We filmed the syrinx with an endoscope while electrically stimulating individual intrinsic muscles on one side. | Syringeal; Medial labium; Vocal organ | 1997 |
| 411 |
 |
Adler, Frederick R.; Liou, Theodore G.; Cahill, Barbara C. | Lung transplantation and survival in children with cystic fibrosis | The effects of lung transplantation on the survival and quality of life in children with cystic fibrosis are uncertain. We used data from the U.S. Cystic Fibrosis Foundation Patient Registry and from the Organ Procurement and Transplantation Network to identify children with cystic fibrosis who were... | Life; Infection; Risk; Harm | 2007 |
| 412 |
 |
Olivera, Baldomero M. | Subfamily Turrinae in the Philippines: the genus Turris (Roding, 1798) | Marine gastropods of the family Turridae, commonly known as turrids, comprise the largest living group of venomous snails. The taxonomy of this group, however, has been generally neglected. In this work, the genus Tunis (Roding 1798) is discussed. Out of more than 200 different turrid genera, this g... | 1999-01-01 | |
| 413 |
 |
Coley, Phyllis D. | Disponibilidad de recursos y defensas de las plantas frente al herbivorismo | El grado de herbivorismo y la eficacia de las defensas muestran amplias variaciones en las especies de plantas. La disponibilidad de recursos en el ambiente se propone como el mayor determinante de la cantidad y tipo de defensas de las plantas. Cuando los recursos son limitados, las plantas de cre... | Defensas; Plantas; Herbivorismo | 2007 |
| 414 |
 |
Adler, Frederick R. | Optimization, conflict, and nonoverlapping foraging ranges in ants | An organism's foraging range depends on the behavior of neighbors, the dynamics of resources, and the availability of information. We use a well-studied population of the red harvester ant Pogonomyrmex barbatus to develop and independently parameterize models that include these three factors. The mo... | Colony; Space; Model | 2003 |
| 415 |
 |
Beckerle, Mary C.; Clark, Kathleen A. | Integrin effector PINCH regulates JNK activity and epithelial migration in concert with Ras suppressor 1 | Cell adhesion and migration are dynamic pro- cesses requiring the coordinated action of multiple signaling pathways, but the mechanisms underlying signal integration have remained elusive. Drosophila embryonic dorsal closure (DC) requires both integrin function and c-Jun amino-terminal kinase (JNK) ... | Epithelial sheets; PINCH | 2004 |
| 416 |
 |
Goller, Franz | Tracheal length changes and upper vocal tract resonances during zebra finch song | Upper vocal tract resonances in singing birds could be modified by beak opening, laryngeal adjustments and tracheal length changes. | Sonomicrometry; Syringeal; Tracheal shortening | 2000 |
| 417 |
 |
Ehleringer, James R. | Potential adaptability and constraints of response to changing climates for Encelia farinosa var. phenicodonta from southern Baja California, Mexico | To examine the physiological adaptability of Encelia farinosa var. phenicodonta from southern Baja California, plants from Todos Santos, BCS were raised in central Arizona where winter-spring precipitation is greater than typically experienced by this variety. Plants were capable of high photosynthe... | Encelia farinosa var. phenicodonta; Ecophysiology | 1996 |
| 418 |
 |
Beckerle, Mary C. | LIM domain-containing protein Trip6 can act as a coactivator for the v-Rel transcription factor | The retroviral oncoprotein v-Rel is a transcriptional activator in the Rel/NF-KB family of eukaryotic transcription factors. v-Rel malignantly transforms a variety of cell types in vitro and in vivo, and its transforming activity is dependent on the ability of v-Rel to bind to DNA and activate trans... | LIM domains; Oncoproteins; v-Rel; Retroviral oncogene; Trip6; Coactivator; Malignant transformation; NF-kB; Two-hybrid assay | 1999 |
| 419 |
 |
Bohs, Lynn A. | Cyphomandra (Solanaceae) | Unusual ecological aspects of Cyphomandra include its pollination syndrome and herbivore relationships. Male euglossine bees may be important pollinators of Cyphomandra flowers, and the primary attractants may not be pollen, but odor substances secreted by the anther connectives. Specialized herbi... | Cyphomandra; Latin America | 1994 |
| 420 |
 |
Bastiani, Michael | Growth cone dynamics during the migration of an identified commissural growth cone | We have used time-lapse video microscopy to study the behavior of a neuron, 01, that pioneers the posterior commissure of the embryonic grasshopper. Our goal is to use time-lapse video as a tool to acquire a precise picture of normal development over time, and thereby identify stereotypic activities... | Time-lapse video; Commissure; Grasshopper; Pathfinding; Filopodia; Confocal microscopy; Adhesion | 1993 |
| 421 |
 |
Ehleringer, James R. | Bayesian integration of isotope ratio for geographic sourcing of castor beans | Recent years have seen an increase in the forensic interest associated with the poison ricin, which is extracted from the seeds of the Ricinus communis plant. Both light element (C, N, O, and H) and strontium (Sr) isotope ratios have previously been used to associate organic material with geographic... | 2012-01-01 | |
| 422 |
 |
Sekercioglu, Cagan | Birding economics: conservation through commodification | In the long-run, the quality of our birding (and the length of our lists) depends on our success in conserving birds and their habitats. Who would not love to see a Labrador Duck during a pelagic trip, have Carolina Parakeets fly overhead on a CBC, or photograph a Bachman's Warbler foraging in a can... | 2003-01-01 | |
| 423 |
 |
Potts, Wayne K.; Granger, Donald Lee | Major histocompatibility complex-dependent susceptibility to Cryptococcus neoformans in mice | To evaluate the role of major histocompatibility complex (MHC) genes in the resistance to Cryptococcus neoformans, we conducted infection experiments in MHC-congenic strains of mice. Significant MHC-dependent susceptibility differences were found among homozygotes and heterozygotes. This study is th... | MHC-congenic; Host resistance; Infection | 2003 |
| 424 |
 |
Bastiani, Michael | Central projections of the stretch receptor neurons of crayfish: segmental gradients of synaptic probability and strength | The 20 stretch receptor neurons (SRs) of the crayfish abdomen send axons into the CNS that then project both to the brain and to the last abdominal ganglion, G6 (Bastiani and Mulloney, 1988). In G6, we recorded intracellularly from different kinds of neurons postsynaptic to SR axons. | Axons; Synapses; SR | 1988 |
| 425 |
 |
Coley, Phyllis D. | Vesicular-arbuscular mycorrhizae in two tropical monodominant trees | Mycorrhizae, symbioses between plant roots and fungi, are found in virtually all terrestrial plant ecosystems. Substantial evidence indicates that mycorrhizal associations are beneficial to both partners. | Ectromycorrizae; Flooding; Monodominance; Neotropics; Vesicular-arbuscular mycorrhizae; Mora excelsa; Prioria copaifera | 1997 |