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Toxic Torts, Autism, And Bad Science: Why The Courts May Be Our Best Defense Against Scientific Relativism, Joelle A. Moreno Jan 2006

Toxic Torts, Autism, And Bad Science: Why The Courts May Be Our Best Defense Against Scientific Relativism, Joelle A. Moreno

Faculty Publications

No abstract provided.

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The Effect Of Carbon Revenues On The Rotation And Profitability Of Loblolly Pine Plantations In East Texas, Ching Hsun Huang, Gary D. Kronrad Jan 2006

The Effect Of Carbon Revenues On The Rotation And Profitability Of Loblolly Pine Plantations In East Texas, Ching Hsun Huang, Gary D. Kronrad

Faculty Publications

This study determined the profitability and financially optimal thinning and final harvest rotation of loblolly pine (Pinus taeda) managed exclusively for timber production or for dual products of timber production and carbon sequestration. The results suggest that 1) depending on landowner’s alternative rate of return, the inclusion of carbon revenues in forest management may shorten or prolong the optimal timber-carbon rotation length, compared to the optimal rotation that maximizes timber value only; 2) the effect of carbon revenues on the optimal rotation length and the percentage gain in soil expectation value is larger on low-productivity sites than on high-productivity sites, …

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Use Of A Generalized Sigmoid Growth Function To Predict Site Index For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee Jan 2006

Use Of A Generalized Sigmoid Growth Function To Predict Site Index For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee

Faculty Publications

A generalized sigmoid growth function was used in this study to model site index (SI) for unmanaged or lowintensity managed loblolly pine (Pinus taeda, L.) and slash pine (Pinus elliottii, Engelm.) plantations in east Texas. Schnute's growth function was fit to 11 ,367 and 5,040 height-age observations of loblolly and slash pine, respectively. These data were collected over a 20-year period from unmanaged pine plantations located across the east Texas region as a part of the East Texas Pine Plantation Research Project (ETPPRP). The fit model was used to derive Sl equations (25-year index age). The Sl equations apply to …

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Characteristics Of Bark Beetle Infestations In East Texas During A Period Of Low Southern Pine Beetle Activity, David L. Kulhavy Jan 2006

Characteristics Of Bark Beetle Infestations In East Texas During A Period Of Low Southern Pine Beetle Activity, David L. Kulhavy

Faculty Publications

The species composition nf southern pine bark beetle infestations was examined in east Texas in 1979, A total of 545 infestations were located in thirteen 18,000 acresurvey blocks. Ips spp, were observed in 98.9 of ihe infestations, with black turpentine beetles, Dendrnclonus lerebrans Olivier, present in 42.4 % ofthe infestations. Southern pine beetles, D. fronlulis Zimmemiann. were only observed in 11 infestations (2.0%), and were less abundant than other bark beetle species in these infestations. Almost 80% of the infestations were associated with a recognizable pre-disposing factor (lightning, fire, etc.). Most Infestations were small (less than six trees), though infestations …

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Spatial Autocorrelation And Pseudoreplication In Fire Ecology, Amanda L. Bataineh, Brian P. Oswald, Mohammad M. Bataineh, Daniel Unger, I-Kuai Hung, Daniel Scognamillo Jan 2006

Spatial Autocorrelation And Pseudoreplication In Fire Ecology, Amanda L. Bataineh, Brian P. Oswald, Mohammad M. Bataineh, Daniel Unger, I-Kuai Hung, Daniel Scognamillo

Faculty Publications

Fire ecologists face many challenges regarding the statistical analyses of their studies. Hurlbert (1984) brought the problem of pseudoreplication to the scientific community’s attention in the mid 1980’s. Now, there is a new issue in the form of spatial autocorrelation. Spatial autocorrelation, if present, violates the traditional statistical assumption of observational independence. What, if anything, can the fire ecology community do about this new problem? An understanding of spatial autocorrelation, and knowledge of available methods used to reduce the effect of spatial autocorrelation and pseudoreplication will greatly assist fire ecology researchers.

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Population Trends Of Red-Cockaded Woodpeckers In Texas, Richard N. Conner, Daniel Saenz, D. Craig Rudolph Jan 2006

Population Trends Of Red-Cockaded Woodpeckers In Texas, Richard N. Conner, Daniel Saenz, D. Craig Rudolph

Faculty Publications

We tracked population trends of Red-cockaded Woodpeckers (Picoides borealis) in eastern Texas from 1983 through 2004. After declining precipitously during the 1980s, woodpecker population trends on federal lands (National Forests and Grasslands in Texas, but excluding the Big Thicket National Preserve) increased between 1990 and 2000, and have been stable to slightly decreasing over the past four years. Litigation against the U.S. Forest Service in the mid 1980s reversed a severe population decline, whereas litigation during the past 8 years hampered recovery efforts for the Red-cockaded Woodpecker. Red-cockaded Woodpecker populations on private and State of Texas lands have steadily declined …

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Winter Food Habits And Preferences Of Northern Bobwhites In East Texas, Donald R. Dietz, R. Montague Whiting Jr., Nancy E. Koerth Jan 2006

Winter Food Habits And Preferences Of Northern Bobwhites In East Texas, Donald R. Dietz, R. Montague Whiting Jr., Nancy E. Koerth

Faculty Publications

During late winter, 1994 and 1995, we investigated food habits and preferences of northern bobwhites (Colinus virginianus; hereafter, bobwhites) collected on forested lands in east Texas. Crops for bobwhites were collected from areas under 3 management regimes, namely intensively managed for bobwhites (QMA) (i.e., tree basal area reduced, annually burned, numerous multi-stage food plots, etc.), extensively managed for timber and wildlife (NBS) (i.e., burned every 3-5 years, scattered 2-stage food plots with corn feeders), and unmanaged for wildlife (i.e., burned every 5-7 years). With years pooled, partridge pea (Cassia fasciculata), Hercules club (Zanthoxylum clava-herculis), and pine (Pinus spp.) seeds, and …

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Invasion Of Exotic Earthworms Into Ecosystems Inhabited By Native Earthworms, P. F. Hendrix, G. H. Baker, M. A. Callaham Jr., G. A. Damoff, C. Fragoso, G. Gonzalez, S. W. James, S. L. Lachnicht, T. Winsome, X. Zou Jan 2006

Invasion Of Exotic Earthworms Into Ecosystems Inhabited By Native Earthworms, P. F. Hendrix, G. H. Baker, M. A. Callaham Jr., G. A. Damoff, C. Fragoso, G. Gonzalez, S. W. James, S. L. Lachnicht, T. Winsome, X. Zou

Faculty Publications

The most conspicuous biological invasions in terrestrial ecosystems have been by exotic plants, insects and vertebrates. Invasions by exotic earthworms, although not as well studied, may be increasing with global commerce in agriculture, waste management and bioremediation. A number of cases has documented where invasive earthworms have caused significant changes in soil profiles, nutrient and organic matter dynamics, other soil organisms or plant communities. Most of these cases are in areas that have been disturbed (e.g., agricultural systems) or were previously devoid of earthworms (e.g., north of Pleistocene glacial margins). It is not clear that such effects are common in …

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Dynamin As A Mover And Pincher During Cell Migration And Invasion, Anne E. Kruchten, Mark A. Mcniven Jan 2006

Dynamin As A Mover And Pincher During Cell Migration And Invasion, Anne E. Kruchten, Mark A. Mcniven

Faculty Publications

The large GTPase dynamin, long known for its role in endocytosis, has most recently been implicated as a facilitator of cell migration and invasion. Recent observations link dynamin to the cycle of membrane expansion and retraction essential for cell motility. Its role in actin polymerization, membrane deformation and vesiculation, and focal adhesion dynamics are all important for this process, and the new findings provide exciting directions for studies of this ubiquitous and diverse protein family.

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Allostasis, Homeostasis, And The Costs Of Physiological Adaptation, Sarah C. Coste Jan 2006

Allostasis, Homeostasis, And The Costs Of Physiological Adaptation, Sarah C. Coste

Faculty Publications

Sarah Coste reviews Allostasis, Homeostasis, and the Costs of Physiological Adaptation (edited by Jay Schulkin) for the Quarterly Review of Biology.

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Restoration Success Of Backfilling Canals In Coastal Louisiana Marshes, Joseph Baustian, R. Eugene Turner Jan 2006

Restoration Success Of Backfilling Canals In Coastal Louisiana Marshes, Joseph Baustian, R. Eugene Turner

Faculty Publications

The need for effective marsh restoration techniques in Louisiana is a pressing issue as the state continues to lose coastal wetlands. Returning spoil banks to canals, known as backfilling, is an attractive restoration option because it restores marsh, prevents future wetland loss, and is cost effective. The restoration of 30 canals backfilled 20 years ago was examined in this study and compared to restoration success 5 and 10 years after backfilling. Ultimately, the success of backfilling was controlled by the amount of spoil returned to the canal and the position of the canal in the marsh. Up to 95% of …

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Reconstructing The Development Of Eutrophication In Louisiana Salt Marshes, M L. Parsons, Q Dortch, R. Eugene Turner, N R. Rabalais, M L. Parsons Jan 2006

Reconstructing The Development Of Eutrophication In Louisiana Salt Marshes, M L. Parsons, Q Dortch, R. Eugene Turner, N R. Rabalais, M L. Parsons

Faculty Publications

We collected sediment cores from three salt marsh ponds in coastal Louisiana to test the usefulness of proxies of eutrophication. One-centimeter increments of Pb-210- and Cs-137-dated sediment were analyzed for diatoms, pigments (phaeophytin and chlorophyll a), biogenic silica, percentage organic matter, percentage carbon, and percentage nitrogen. Both sediment chlorophyll a and a diatom-based trophic index (TI) were significantly and positively correlated with riverine or local nutrient indices. Two diatom species, Amphora copulata Giffen and Navicula yarrensis Grunow, were significantly and negatively correlated with riverine and local nutrient indices. These results suggest that these variables can be used as potential indicators …

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Paleo-Indicators And Water Quality Change In The Charlotte Harbor Estuary (Florida), R. Eugene Turner, N N. Rabalais, B Fry, N Atilla, J M. Lee, C Normandeau, T A. Oswald, E M. Swenson, D A. Tomasko Jan 2006

Paleo-Indicators And Water Quality Change In The Charlotte Harbor Estuary (Florida), R. Eugene Turner, N N. Rabalais, B Fry, N Atilla, J M. Lee, C Normandeau, T A. Oswald, E M. Swenson, D A. Tomasko

Faculty Publications

We reconstructed water quality changes for 1800 to 2000 in Charlotte Harbor (Florida), a shallow subtropical estuary, by using a suite of biological and geochemical proxies in dated sediments collected in the region of a present day, midsummer hypoxic zone. The declining freshwater loading into the estuary from 1931 to the 1980s is not the probable causal agent encouraging the appearance or expansion of a hypoxia zone (measuring up to 90 km(2) in summer). Rather, the reconstructed trends in nitrogen loading indicate increased phytoplankton production has likely caused a decline in bottom water oxygen concentrations. Sedimentary biogenic silica (BSi), carbon, …

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Oxygen Depletion In The Gulf Of Mexico Adjacent To The Mississippi River, Nancy N. Rabalais, R. Eugene Turner Jan 2006

Oxygen Depletion In The Gulf Of Mexico Adjacent To The Mississippi River, Nancy N. Rabalais, R. Eugene Turner

Faculty Publications

The seasonal formation of a bottom water layer severely depleted in dissolved oxygen has become a perennial occurrence on the Louisiana continental shelf adjacent to the Mississippi River system. Dramatic changes have occurred in this coastal ecosystem in the last half of the 20th century as the loads of dissolved inorganic nitrogen tripled. There are increases in primary production, shifts in phytoplankton community composition, changes in trophic interactions, and worsening severity of hypoxia. The hypoxic conditions (dissolved oxygen less than 2 mg l-1) cover up to 22,000 km2 of the seabed in mid-summer. Dissolved oxygen concentrations seldom decrease to anoxia, …

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Leaf Gas Exchange Characteristics Of Three Neotropical Mangrove Species In Response To Varying Hydroperiod, Ken W. Krauss, Robert R. Twilley, Thomas W. Doyle, Emile S. Gardiner Jan 2006

Leaf Gas Exchange Characteristics Of Three Neotropical Mangrove Species In Response To Varying Hydroperiod, Ken W. Krauss, Robert R. Twilley, Thomas W. Doyle, Emile S. Gardiner

Faculty Publications

We determined how different hydroperiods affected leaf gas exchange characteristics of greenhouse-grown seedlings (2002) and saplings (2003) of the mangrove species Avicennia germinans (L.) Stearn., Laguncularia racemosa (L.) Gaertn. f., and Rhizophora mangle L. Hydroperiod treatments included no flooding (unflooded), intermittent flooding (intermittent), and permanent flooding (flooded). Plants in the intermittent treatment were measured under both flooded and drained states and compared separately. In the greenhouse study, plants of all species maintained different leaf areas in the contrasting hydroperiods during both years. Assimilation-light response curves indicated that the different hydroperiods had little effect on leaf gas exchange characteristics in either …

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Underage Drinking: Does Current Policy Make Sense?, Judith G. Mcmullen Jan 2006

Underage Drinking: Does Current Policy Make Sense?, Judith G. Mcmullen

Faculty Publications

This Article examines the history of laws and policies regulating consumption of alcoholic beverages by young people in the United States, and examines youth drinking patterns that have emerged over time. Currently, all 50 states have a minimum drinking age of 21. Various rationales are offered for the 21 drinking age, such as the claim that earlier drinking hinders cognitive functions, and the claim that earlier drinking increases the lifetime risk of becoming an alcoholic. While there is sufficient evidence to support the claim that it would be better for adolescents and young adults if they did not drink prior …

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Ethics, Evidence, And The Modern Adversary Trial, Daniel D. Blinka Jan 2006

Ethics, Evidence, And The Modern Adversary Trial, Daniel D. Blinka

Faculty Publications

No abstract provided.

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Regulating The Business Of Insurance: Federalism In An Age Of Difficult Risk, Robert H. Jerry Ii, Steven E. Roberts Jan 2006

Regulating The Business Of Insurance: Federalism In An Age Of Difficult Risk, Robert H. Jerry Ii, Steven E. Roberts

Faculty Publications

Natural disasters and terrorism events of a massive scale are "difficult risks." They are difficult (or, if large enough, impossible) to insure, and they present enormous risk-management challenges. Indeed, we are now in an era when difficult risks are the dominant feature of the risk-management landscape. These kinds of risks are inevitably multi-jurisdictional in nature, and managing them effectively requires a cohesive, comprehensive national catastrophe policy involving ex ante prevention and mitigation measures, effective risk allocation through insurance mechanisms, and ex post victim-compensation strategies. Although our nation is not yet close to establishing a much-needed and increasingly discussed national catastrophe …

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Gis-Based Analysis Of Ice-Breeding Seal Strandings In The Gulf Of Maine, David Harris Ph.D., Sat Gupta Jan 2006

Gis-Based Analysis Of Ice-Breeding Seal Strandings In The Gulf Of Maine, David Harris Ph.D., Sat Gupta

Faculty Publications

Phoca groenlandica (harp seals) and Cystophora cristata (hooded seals), two species of ice-breeding seals, are being sighted more frequently onshore in the Gulf of Maine since 1990, but little is known about their behavior in this ecosystem. We obtained records of 904 ice-breeding seal stranding locations in the Gulf of Maine between 1996 and 2002 from NOAA Fisheries and used a geographic information system (GIS) to conduct group-wise comparisons by species (using non-parametric techniques), and to determine the predictors of high seal-stranding density (using ordinal logistic regression analysis). Compared to harp seals, hooded seals stranded closer to deep water, farther …

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A Right To No Meaningful Review Under The Due Process Clause: The Aftermath Of Judicial Deference To The Federal Administrative Agencies, Ruqaiijah Yearby Jan 2006

A Right To No Meaningful Review Under The Due Process Clause: The Aftermath Of Judicial Deference To The Federal Administrative Agencies, Ruqaiijah Yearby

Faculty Publications

The Due Process Clause of the Fifth Amendment has been perverted in the federal administrative system. For example, federal agencies, such as the U.S. Department of Health and Human Services (HHS), regularly deprive individuals of liberty and property with little to no review. In its regulation of the health care industry through the Medicare program, HHS often turns a blind eye to procedural Due Process protections, such as providing individuals an opportunity to challenge the deprivation of property at a hearing, even though the Constitution, the Administrative Procedure Act, and the Medicare Act grant these protections. The Medicare compliance hearing …

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The Ambiguous Meaning Of Human Conception, Philip G. Peters Jr. Jan 2006

The Ambiguous Meaning Of Human Conception, Philip G. Peters Jr.

Faculty Publications

Nearly all of the state and federal laws that treat embryos as persons contain a fundamental ambiguity. Contrary to common belief, there is no "moment" of conception. Instead, conception is a forty-eight hour process, during which the haploid genomes of the sperm and egg are gradually and precisely transformed into the functioning diploid genome of a new human embryo. During that two-day period, many common clinical and laboratories activities take place, including the culling of unsuitable embryos, the freezing of others, and the testing of embryos for genetic abnormalities. The legal status of these activities will turn on the point …

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Temperature Dependence And Thermodynamics Of Klenow Polymerase Binding To Primed-Template Dna, Kausiki Datta, Andy J. Wowor, Allison J. Richard, Vince J. Licata Jan 2006

Temperature Dependence And Thermodynamics Of Klenow Polymerase Binding To Primed-Template Dna, Kausiki Datta, Andy J. Wowor, Allison J. Richard, Vince J. Licata

Faculty Publications

DNA binding of Klenow polymerase has been characterized with respect to temperature to delineate the thermodynamic driving forces involved in the interaction of this polymerase with primed-template DNA. The temperature dependence of the binding affinity exhibits distinct curvature, with tightest binding at 25-30°C. Nonlinear temperature dependence indicates Klenow binds different primed-template constructs with large heat capacity (ΔCp) values (-870 to -1220 cal/mole K) and thus exhibits large temperature dependent changes in enthalpy and entropy. Binding is entropy driven at lower temperatures and enthalpy driven at physiological temperatures. Large negative ΔCp values have been proposed to be a 'signature' of site-specific …

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Plasmid-Mediated High-Level Gentamicin Resistance Among Enteric Bacteria Isolated From Pet Turtles In Louisiana, María Alejandra Díaz, Richard Kent Cooper, Axel Cloeckaert, Ronald John Siebeling Jan 2006

Plasmid-Mediated High-Level Gentamicin Resistance Among Enteric Bacteria Isolated From Pet Turtles In Louisiana, María Alejandra Díaz, Richard Kent Cooper, Axel Cloeckaert, Ronald John Siebeling

Faculty Publications

The sale of small turtles is banned by the Food and Drug Administration from the U.S. market due to concerns about their excretion of Salmonella spp. To produce a safe pet for the export market, the Louisiana pet turtle industry uses gentamicin sulfate baths (1,000 μg/ml) to eradicate Salmonella spp. from turtle eggs. In 1999, we analyzed bacterial samples recovered from turtle farms and found that strains of Salmonella enterica subsp. arizonae and other bacteria, such as Enterobacter cloacae, Citrobacter freundii, Pseudomonas aeruginosa, and Stenotrophomonas maltophilia, were resistant to high concentrations of gentamicin (>2,000 μg/ml) and to other aminoglycosides. …

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Sequence Variation In The Coding Region Of The Melanocortin-1 Receptor Gene (Mc1r) Is Not Associated With Plumage Variation In The Blue-Crowned Manakin (Lepidothrix Coronata), Z. A. Cheviron, Shannon J. Hackett, Robb T. Brumfield Jan 2006

Sequence Variation In The Coding Region Of The Melanocortin-1 Receptor Gene (Mc1r) Is Not Associated With Plumage Variation In The Blue-Crowned Manakin (Lepidothrix Coronata), Z. A. Cheviron, Shannon J. Hackett, Robb T. Brumfield

Faculty Publications

Avian plumage traits are the targets of both natural and sexual selection. Consequently, genetic changes resulting in plumage variation among closely related taxa might represent important evolutionary events. The molecular basis of such differences, however, is unknown in most cases. Sequence variation in the melanocortin-1 receptor gene (MC1R) is associated with melanistic phenotypes in many vertebrate taxa, including several avian species. The blue-crowned manakin (Lepidothrix coronata), a widespread, sexually dichromatic passerine, exhibits striking geographic variation in male plumage colour across its range in southern Central America and western Amazonia. Northern males are black with brilliant blue crowns whereas southern males …

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Cia V. Sims: Mosaic Theory And Government Attitude, Christina E. Wells Jan 2006

Cia V. Sims: Mosaic Theory And Government Attitude, Christina E. Wells

Faculty Publications

In CIA v. Sims, the United States Supreme Court held that the CIA could withhold information about controversial government-sponsored psychological experiments in response to Freedom of Information Act (FOIA) requests. The Court reasoned that the requested information would reveal intelligence sources related to national defense, which were specifically protected from disclosure under the National Security Act of 1947. Accordingly, the Court concluded that the CIA could refuse to disclose the information under FOIA Exemption 3, which allows withholding of information “specifically exempted from disclosure by statute.” Numerous scholars assailed Sims, arguing that the Court's broad reading of the National Security …

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Phytochrome Genes In Higher Plants: Structure,Expression, And Evolution, Robert A. Sharrock, Sarah Mathews Jan 2006

Phytochrome Genes In Higher Plants: Structure,Expression, And Evolution, Robert A. Sharrock, Sarah Mathews

Faculty Publications

© 2006 Springer. All Rights Reserved. Phytochromes play critical roles in monitoring light quantity, quality, and periodicity in plants and they relay this photosensory information to a large number of signaling pathways that regulate plant growth and development. Given these complex functions, it is not surprising that the phytochrome apoproteins are encoded by small multigene families and that different forms of phytochrome regulate different aspects of photomorphogenesis. Over the course of the last decade, progress has been made in defining the number, molecular properties, and biological activities of the photoreceptors that constitute a plant R/FR sensing system. This chapter summarizes …

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Relations Between Chinese Mothers' Parenting Practices And Social Withdrawal In Early Childhood, Larry J. Nelson, Craig H. Hart, Bo Wu, Chongming Yang, Susanne Olsen Roper, Shenghua Jin Jan 2006

Relations Between Chinese Mothers' Parenting Practices And Social Withdrawal In Early Childhood, Larry J. Nelson, Craig H. Hart, Bo Wu, Chongming Yang, Susanne Olsen Roper, Shenghua Jin

Faculty Publications

Researchers have identified specific parenting practices used by parents of preschoolers in mainland China (e.g., physical coercion, overprotection, shaming, directiveness, encouragement of modesty). Some of the intrusive practices have been linked to social withdrawal in western societies (e.g., United States, Canada). It seemed important to examine these associations in China because recent research suggests that young Chinese children who exhibit wariness in peer settings may be at risk for negative outcomes such as peer rejection. Therefore, the purpose of this study was to examine the relation between Chinese parenting practices and preschoolers' social withdrawal. Mothers of preschool-age children from mainland …

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A Spectrum Of Pcsk9 Alleles Contributes To Plasma Levels Of Low-Density Lipoprotein Cholesterol, Ingrid K. Kotowski, Alexander Pertsemlidis, Amy Luke, Richard S. Cooper, Gloria L. Vega, Jonathan C. Cohen, Helen H. Hobbs Jan 2006

A Spectrum Of Pcsk9 Alleles Contributes To Plasma Levels Of Low-Density Lipoprotein Cholesterol, Ingrid K. Kotowski, Alexander Pertsemlidis, Amy Luke, Richard S. Cooper, Gloria L. Vega, Jonathan C. Cohen, Helen H. Hobbs

Faculty Publications

Selected missense mutations in the proprotein convertase subtilisin/kexin type 9 serine protease gene (PCSK9) cause autosomal dominant hypercholesterolemia, whereas nonsense mutations in the same gene are associated with low plasma levels of low-density lipoprotein cholesterol (LDL-C). Here, DNA sequencing and chip-based oligonucleotide hybridization were used to determine whether other sequence variations in PCSK9 contribute to differences in LDL-C levels. The coding regions of PCSK9 were sequenced in the blacks and whites from the Dallas Heart Study (n = 3,543) who had the lowest (percentile) and highest (>95 th percentile) plasma levels of LDL-C. Of the 17 missense variants identified, …

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Comparative Susceptibility Of Sweetpotato Weevil (Coleoptera: Brentidae) To Selected Insecticides, Tara P. Smith, Abner M. Hammond Jan 2006

Comparative Susceptibility Of Sweetpotato Weevil (Coleoptera: Brentidae) To Selected Insecticides, Tara P. Smith, Abner M. Hammond

Faculty Publications

The response of sweetpotato weevil, Cylas formicarius (F.) (Coleoptera: Brentidae), to insecticides used for its control was tested in laboratory bioassays. A glass vial bioassay technique was used to determine the susceptibility of two cohorts of sweetpotato weevil to selected insecticides. Vials were treated with methyl parathion, bifenthrin, cyfluthrin, carbaryl, and phosmet. Sweetpotato weevils demonstrated a mortality response to increasing concentrations of all insecticides tested, and our results indicated decreases in susceptibility of the Louisiana cohort of sweetpotato weevil compared with the Texas cohort for all insecticides tested. Methyl parathion was the most toxic chemical tested for both cohorts, followed …

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Pilibacter Termitis Gen. Nov., Sp. Nov., A Lactic Acid Bacterium From The Hindgut Of The Formosan Subterranean Termite (Coptotermes Formosanus), Dennis T. Higashiguchi, Claudia Husseneder, J. Kenneth Grace, John M. Berestecky Jan 2006

Pilibacter Termitis Gen. Nov., Sp. Nov., A Lactic Acid Bacterium From The Hindgut Of The Formosan Subterranean Termite (Coptotermes Formosanus), Dennis T. Higashiguchi, Claudia Husseneder, J. Kenneth Grace, John M. Berestecky

Faculty Publications

A previously undescribed anaerobic, heterofermentative, non-spore-forming, Gram-positive rod was isolated from the hindgut of the Formosan subterranean termite Coptotermes formosanus Shiraki. The DNA G + C content of this bacterium was 37.8 mol%. Sequence analysis of the 16S rRNA gene revealed that this organism is related to, but distinct from, several genera of lactic acid bacteria, principally several species of the genus Enterococcus. Phenotypic traits that serve to separate this organism from related genera include high levels of the cellular fatty acid C18:1ω9c and the production of ethanol along with lactic acid as fermentation products. Based on the collected phylogenetic …

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