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Articles 8161 - 8190 of 8908
Full-Text Articles in Entire DC Network
Development Of The Muskox Lungworm, Umingmakstrongylus Pallikuukensis (Protostrongylidae), In Gastropods In The Arctic, Susan J. Kutz, Eric P. Hoberg, John Nishi, Lydden Polley
Development Of The Muskox Lungworm, Umingmakstrongylus Pallikuukensis (Protostrongylidae), In Gastropods In The Arctic, Susan J. Kutz, Eric P. Hoberg, John Nishi, Lydden Polley
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Development of the muskox protostrongylid lungworm, Umingmakstrongylus pallikuukensis, in its slug intermediate host, Deroceras laeve, was investigated under field conditions in the Arctic. Every two weeks, from 19 June to 28 August 1997, groups of ten experimentally infected slugs were placed in tundra enclosures in a mesic sedge meadow near Kugluktuk, Nunavut, Canada. First-stage larvae (L1) infecting slugs on or before 17 July developed to third-stage larvae (L3) in 4–6 weeks. Intensity of L3 in slugs peaked at 6–8 weeks post infection (PI) and then progressively declined by 10, 12, and 48–50 weeks PI. Abundance of L3 in …
Phylogenetic Positions Of The Bothitrematidae And Neocalceostomatidae (Monopisthocotylean Monogeneans) Inferred From 28s Rdna Sequences, Jean-Lou Justine, Richard Jovelin, Lassâd Neifar, Isabelle Mollaret, L.H. Susan Lim, Sherman S. Hendrix, Louis Euzet
Phylogenetic Positions Of The Bothitrematidae And Neocalceostomatidae (Monopisthocotylean Monogeneans) Inferred From 28s Rdna Sequences, Jean-Lou Justine, Richard Jovelin, Lassâd Neifar, Isabelle Mollaret, L.H. Susan Lim, Sherman S. Hendrix, Louis Euzet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
A molecular phylogeny was inferred from newly obtained partial (D1 domain) 28S rDNA gene sequences of Bothitrema bothi (Bothitrematidae), Neocalceostoma sp. (Neocalceostomatidae), Bravohollisia sp. (Ancyrocephalidae), and other already available sequences of Ancyrocephalidae, Anoplodiscidae, Pseudodactylogyridae, and Sundanonchidae, with the Diplectanidae as outgroup. Bothitrema, Anoplodiscus, and Sundanonchus formed a very robust clade that was the sister group to a group that included all other species examined. In this latter group, Neocalceostoma and Thaparocleidus were basal to a clade in which the Ancyrocephalidae and Pseudodactylogyridae were sister groups. Molecular results that suggest inclusion of the families Bothitrematidae, Anoplodiscidae, and Sundanonchidae in …
Implications Of Single-Particle Experiments For Track Theory, Therapy And Radiation Protection, Robert Katz, Francis Cucinotta
Implications Of Single-Particle Experiments For Track Theory, Therapy And Radiation Protection, Robert Katz, Francis Cucinotta
Robert Katz Publications
‘‘Because the predominant exposure of cells in humans is to single isolated tracks, a critical question is what effects a single track is capable of producing and with what probabilities.’’ ‘‘Most of the current biophysical models. . . make the clear prediction that a single track can produce virtually all of the detrimental stochastic effects of interest.’’ ‘‘But one model, in particular (the amorphous track model of Katz and coworkers), disagrees fundamentally that a single low LET track has the ability to cause the cellular changes.’’ ‘‘This model leads to very dramatic differences in the predicted risk at low doses. …
Biomedical Research In The Kingdom Of Saudi Arabia (1982-2000), Ghazi O. Tadmouri, Nisrine B. Tadmouri
Biomedical Research In The Kingdom Of Saudi Arabia (1982-2000), Ghazi O. Tadmouri, Nisrine B. Tadmouri
Saudi Medical Journal
No abstract provided.
Effect Of Zinc On The Treatment Of Plasmodium Falciparum Malaria In Children: A Randomized Controlled Trial, F. Sempertegui, B. Estrella, F.R. Toapanta, D.S. Torres, D.E. Calahorrano, K. Yeboah-Antwi, E. Addo-Yobo, P. Arthur, S. Newton, Zul Premji, M. Hubert, C.S. Makwaya, F. Ssengooba, J. Konde-Lule, E. Mukisa, D.H. Hamer, W. Macleod, C. Duggan, W. Fawzi, J. Simon, V. Mwanakasale, M. Mulenga, T. Sukwa, J. Tshiula
Effect Of Zinc On The Treatment Of Plasmodium Falciparum Malaria In Children: A Randomized Controlled Trial, F. Sempertegui, B. Estrella, F.R. Toapanta, D.S. Torres, D.E. Calahorrano, K. Yeboah-Antwi, E. Addo-Yobo, P. Arthur, S. Newton, Zul Premji, M. Hubert, C.S. Makwaya, F. Ssengooba, J. Konde-Lule, E. Mukisa, D.H. Hamer, W. Macleod, C. Duggan, W. Fawzi, J. Simon, V. Mwanakasale, M. Mulenga, T. Sukwa, J. Tshiula
Pathology, East Africa
Background: Zinc supplementation in young children has been associated with reductions in the incidence and severity of diarrheal diseases, acute respiratory infections, and malaria.
Objective: The objective was to evaluate the potential role of zinc as an adjunct in the treatment of acute, uncomplicated falciparum malaria; a multicenter, double-blind, randomized placebo-controlled clinical trial was undertaken.
Design: Children (n = 1087) aged 6 mo to 5 y were enrolled at sites in Ecuador, Ghana, Tanzania, Uganda, and Zambia. Children with fever and ≥ 2000 asexual forms of Plasmodium falciparum/μL in a thick blood smear received chloroquine and were randomly assigned to …
Conformational Strictness Required For Maximum Activity And Stability Of Bovine Pancreatic Ribonuclease A As Revealed By Crystallographic Study Of Three Phe120 Mutants At 1.4 Å Resolution, Eri Chatani, Rikimaru Hayashi, Hideaki Moriyama, Tatzuo Ueki
Conformational Strictness Required For Maximum Activity And Stability Of Bovine Pancreatic Ribonuclease A As Revealed By Crystallographic Study Of Three Phe120 Mutants At 1.4 Å Resolution, Eri Chatani, Rikimaru Hayashi, Hideaki Moriyama, Tatzuo Ueki
School of Biological Sciences: Faculty Publications
The replacement of Phe120 with other hydrophobic residues causes a decrease in the activity and thermal stability in ribonuclease A (RNase A). To explain this, the crystal structures of wild-type RNase A and three mutants—F120A, F120G, and F120W—were analyzed up to a 1.4 Å resolution. Although the overall backbone structures of all mutant samples were nearly the same as that of wild-type RNase A, except for the C-terminal region of F120G with a high B-factor, two local conformational changes were observed at His119 in the mutants. First, His119 of the wild-type and F120W RNase A adopted an A position, whereas …
Species Richness, Latitude, And Scale-Sensitivity, S. Kathleen Lyons, Michael R. Willig
Species Richness, Latitude, And Scale-Sensitivity, S. Kathleen Lyons, Michael R. Willig
School of Biological Sciences: Faculty Publications
The latitudinal gradient of species richness is well documented for a variety of taxa in both terrestrial and aquatic environs. Moreover, a number of recent attempts to assess the effects of scale on the relationship have concluded that the latitudinal pattern is scale-invariant. Nonetheless, the power of those approaches is predicated on precise knowledge of the forms of the latitudinal gradient, the area relationship, and their interaction. We used a model developed by J. Pastor, A. Downing, and H. E. Erickson for assessing the effects of scale on the productivity–diversity gradient to avoid such complications. More specifically, for 253 sets …
Detection Of Giardia Duodenalis Antigen In Coprolites Using A Commercially Available Enzyme-Linked Immunosorbent Assay, Marcelo Luiz Carvalho Gonçalves, Adauto Araújo, Rosemere Duarte, Joaquim Pereira Da Silva, Karl Reinhard, Françoise Bouchet, Luis Fernando Ferreira
Detection Of Giardia Duodenalis Antigen In Coprolites Using A Commercially Available Enzyme-Linked Immunosorbent Assay, Marcelo Luiz Carvalho Gonçalves, Adauto Araújo, Rosemere Duarte, Joaquim Pereira Da Silva, Karl Reinhard, Françoise Bouchet, Luis Fernando Ferreira
Karl Reinhard Publications
The objective of this experiment was to assess the utility of a commercially available enzyme-linked immunosorbent assay (ELISA) kit for diagnosis of giardiasis in archaeological human remains. The kit, a monoclonal antibody assay, is used to detect the presence of Giardia-specific antigen 65 (GSA65) in human feces. We utilized the assay in ancient fecal material. The material included desiccated feces found in mummies or in archaeological sites, and sediments from latrines. A total of 83 specimens, previously examined microscopically for parasites, were examined. The ELISA detected 3 positive samples, dated to about 1200 AD, 1600 AD, and 1700 AD. …
Multidisciplinary Coprolite Analysis, Karl Reinhard, Dennis R. Danielson, Mark Daniels, Sérgio Augusto De Miranda Chaves
Multidisciplinary Coprolite Analysis, Karl Reinhard, Dennis R. Danielson, Mark Daniels, Sérgio Augusto De Miranda Chaves
Karl Reinhard Publications
Coprolite analysis, as reviewed by Reinhard and Bryant (1992), contributes unique and detailed information regarding diet and parasitic disease. We present here an analysis of dietary components of coprolites from Bighorn Cave using macroscopic remains, pollen concentrations, and phytoliths. In addition, we analyzed Bighorn Cave coprolites for evidence of parasitic organisms, especially intestinal worms. Such analyses of coprolites have become important methods for reconstructing past dietary and medicinal practices. Pollen concentration and phytolith quantification techniques have recently been developed, but until this report no known attempt has been made to synthesize pollen, macroscopic, and phytolith data from a single coprolite …
Recommended Terminology And Advances In The Systematics Of The Cyathostominea (Nematoda: Strongyloidea) Of Horses, J. Ralph Lichtenfels, L. M. Gibbons, R. C. Krecek
Recommended Terminology And Advances In The Systematics Of The Cyathostominea (Nematoda: Strongyloidea) Of Horses, J. Ralph Lichtenfels, L. M. Gibbons, R. C. Krecek
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Terminology for common names for the Tribe Cyathostominea (cyathostomins), and disease caused by the nematodes (cyathostominosis), were recommended to replace the previously used names cyathostomes and cyathostomosis, which are ambiguous, inaccurate or synonymous, by the Third Internal Workshop on the Systematics of Cyathostominea of Horses, held in Stresa, Italy, 28 August 2001. The progress by this international working group at three workshops is reviewed briefly and a list of publications is provided. Included are an annotated checklist by genus and species of 93 species level names and the recognition of 52 species, redescriptions of seven species, and the description of …
A Preliminary Analysis Of Proteolytic Activity Of Excretory-Secretory Products From Cyathostominea, Jane L. Kinsella, J. Ralph Lichtenfels, Michael F. Ryan
A Preliminary Analysis Of Proteolytic Activity Of Excretory-Secretory Products From Cyathostominea, Jane L. Kinsella, J. Ralph Lichtenfels, Michael F. Ryan
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The excretory-secretory product (ESP) derived from Cyathostominea in vitro was assessed, in terms of subunit composition, and proteolytic activity using as substrates azocasein and two synthetic fluorogenic peptides. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) resolved 13 subunits, and the presence of the protein cysteine proteinase activator dithiothreitol (DTT) revealed 21 subunits.DTTalso enhanced azocaseinolysis, and hydrolysis of carbobenzoxy-phenylalanyl-arginine-7-amido-4-methylcoumarin (Z-Phe-Arg-NHMec) and carbobenzoxy-arginyl-arginine-7-amido-4-methylcoumarin (Z-Arg-Arg-NHMec). At the optimum pH of 5.5, hydrolysis of Z-Phe-Arg-NHMec was three-fold greater than that of Z-Arg-Arg-NHMec suggesting that the proteolytic specificities of the ESP are more like those of papain or cathepsin L, rather than cathepsin B. In SDS-PAGE …
Identification And Characterisation Of A Cdna Sequence Encoding A Glutamic Acid-Rich Protein Specifically Transcribed In Trichinella Spiralis Newborn Larvae And Recognised By Infected Swine Serum, Dante S. Zarlenga, Patricia Boyd, J. Ralph Lichtenfels, Dolores Hill, H. Ray Gamble
Identification And Characterisation Of A Cdna Sequence Encoding A Glutamic Acid-Rich Protein Specifically Transcribed In Trichinella Spiralis Newborn Larvae And Recognised By Infected Swine Serum, Dante S. Zarlenga, Patricia Boyd, J. Ralph Lichtenfels, Dolores Hill, H. Ray Gamble
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Presently, little is known of the mechanism by which Trichinella penetrates and modulates reprogramming of muscle cells. In light of evidence demonstrating strong protective characteristics of antigens derived from this stage, understanding this process may shed light on potential targets for effective abatement of infection. To this end, a PCR-derived cDNA expression library was constructed using 0.5 mg of total RNA from Trichinella spiralis newborn larvae. The library consisted of >125,000 insert-containing clones. Approximately 40-50 × 103 clones were screened immunologically using sera from pigs experimentally infected with 7,000 Trichinella L1. Multiple clones reacting positively with the swine infection …
Foundations For An Integrative Parasitology: Collections, Archives, And Biodiversity Informatics, Eric P. Hoberg
Foundations For An Integrative Parasitology: Collections, Archives, And Biodiversity Informatics, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Burgeoning awareness about biodiversity emphasizes the fundamental importance of museum collections and the contributions of systematists and taxonomists in documenting the structure and history of the biosphere. An essential role is served by this infrastructure in collecting, preparing, analyzing, and disseminating information about the specimens that represent species, document a range of complex biological associations from symbioses to parasitism, and form the tapestry and the myriad facets of biodiversity (e.g., Wilson, 2000). As parasitologists we can examine how we may contribute to this broader documentation and understanding of global biodiversity, and we can articulate and communicate our role as vital …
Protostrongylus Stilesi (Nematoda: Protostrongylidae): Ecological Isolation And Putative Host-Switching Between Dall’S Sheep And Muskoxen In A Contact Zone, Eric P. Hoberg, Susan J. Kutz, John Nagy, Emily Jenkins, Brett Elkin, Marsha Branigan, Dorothy Cooley
Protostrongylus Stilesi (Nematoda: Protostrongylidae): Ecological Isolation And Putative Host-Switching Between Dall’S Sheep And Muskoxen In A Contact Zone, Eric P. Hoberg, Susan J. Kutz, John Nagy, Emily Jenkins, Brett Elkin, Marsha Branigan, Dorothy Cooley
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The occurrence of Protostrongylus stilesi in a population of introduced muskoxen, Ovibos moschatus wardi, on the Arctic Coastal Plain, Yukon Territory (YT) and Northwest Territories (NT), Canada, is consistent with a contemporary colonization event from Dall’s sheep, Ovis dalli dalli, which indicates that host specificity may be ecologically based and contextual for this parasite. Colonization of muskoxen by P. stilesi may be a predictable event in zones of sympatry with Dall’s sheep; exposure to infection may coincide with occupation of winter ranges of Dall’s sheep by muskoxen during the summer season. Disruption of contemporary ecological isolating barriers can …
Relating Net Nitrogen Input In The Mississippi River Basin To Nitrate Flux In The Lower Mississippi River: A Comparison Of Approaches, Gregory F. Mcisaac, Mark B. David, George Z. Gertner, Donald A. Goolsby
Relating Net Nitrogen Input In The Mississippi River Basin To Nitrate Flux In The Lower Mississippi River: A Comparison Of Approaches, Gregory F. Mcisaac, Mark B. David, George Z. Gertner, Donald A. Goolsby
United States Geological Survey: Staff Publications
A quantitative understanding of the relationship between terrestrial N inputs and riverine N flux can help guide conservation, policy, and adaptive management efforts aimed at preserving or restoring water quality. The objective of this study was to compare recently published approaches for relating terrestrial N inputs to the Mississippi River basin (MRB) with measured nitrate flux in the lower Mississippi River. Nitrogen inputs to and outputs from the MRB (1951 to 1996) were estimated from state-level annual agricultural production statistics and NOy (inorganic oxides of N) deposition estimates for 20 states that comprise 90% of the MRB. A model …
In Vitro Mutation Induction By Gamma Irradiation For The Improvement Of A Triploid Banana Pisang Berangan (Aaa), Shadia Aldelgadir Mohamed Rayis
In Vitro Mutation Induction By Gamma Irradiation For The Improvement Of A Triploid Banana Pisang Berangan (Aaa), Shadia Aldelgadir Mohamed Rayis
Student Works (2000-2009)
Tissue culture and induced mutation techniques were used to generate variation for the improvement of Pisang Bcrangan cv. 'Intan' (AAA). Best field perform ing banana in vitroplants were multiplied and evaluated for better field performance, which included improved agronomic traits such as earliness in fruiting, short plant stature, high yielding capacity with desirable fruit quality and tolerance to Fusarium wilt. A suitable micropropagation medium for Pisang Berangan was established through modification of MS basic medium, which resulted in significant increase in shoot multiplication. Shoot-tip meristems of Pisang Berangan were then irradiated at 20, 30, 40 and 60 Gy to induce …
Serotonin Transporter Promoter Polymorphism, Peripheral Indexes Of Serotonin Function, And Personality Measures In Families With Alcoholism, Scott F. Stoltenberg, Geoffrey R. Twitchell, Gregory L. Hanna, Edwin H. Cook, Hiram E. Fitzgerald, Robert A. Zucker, Karley Y. Little
Serotonin Transporter Promoter Polymorphism, Peripheral Indexes Of Serotonin Function, And Personality Measures In Families With Alcoholism, Scott F. Stoltenberg, Geoffrey R. Twitchell, Gregory L. Hanna, Edwin H. Cook, Hiram E. Fitzgerald, Robert A. Zucker, Karley Y. Little
Department of Psychology: Faculty Publications
A functional polymorphism in the regulatory region of the serotonin transporter gene (5-HTTLPR) is considered to be a plausible candidate gene for anxiety-related personality traits and for alcoholism. Empirical support for the association between 5-HTTLPR and psychological traits has been somewhat inconsistent; however, observations of the functional dominance of the low-activity s-allele over the l-allele have been more consistent. When studying the influence of particular genes on psychological traits, it seems useful also to assess more biological intermediate traits that may mediate the effects of those genes on the traits of interest. The present study examined relationships between 5-HTTLPR genotype, …
Repellency Of Ir3535, Kbr3023, Para-Menthane-3,8-Diol, And Deet To Black Salt Marsh Mosquitoes (Diptera: Culicidae) In The Everglades National Park, Donald R. Barnard, Ulrich R. Bernier, Kenneth H. Posey, Rui-De Xue
Repellency Of Ir3535, Kbr3023, Para-Menthane-3,8-Diol, And Deet To Black Salt Marsh Mosquitoes (Diptera: Culicidae) In The Everglades National Park, Donald R. Barnard, Ulrich R. Bernier, Kenneth H. Posey, Rui-De Xue
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
IR3535, KBR3023, para-menthane-3,8-diol (PMD), and deet were evaluated in controlled studies with human subjects (n = 5) for repellency to black salt marsh mosquitoes (Ochlerotatus taeniorhynchus Wiedemann), in the Everglades National Park, FL. In tests of 6-h duration, with an average mosquito biting pressure on exposed forearm skin of 19.5 (±13.7) bites per minute, the mean percent repellencies (SE) for IR3535, KBR3023, PMD, and deet was 88.6 (3.2), 97.5 (1.7), 89.2 (2.9), and 94.8 (2.5), respectively. Mean complete protection times (SE) for IR3535, KBR3023, PMD, and deet were 3.0 (1.0), 5.4 (0.6), 3.8 (1.4), and 5.6 (0.5) h, …
Early Holocene Change In Atmospheric Circulation In The Northern Great Plains: An Upstreamview Of The 8.2 Ka Cold Event, Walter E. Dean, Richard M. Forester, J. Platt Bradbury
Early Holocene Change In Atmospheric Circulation In The Northern Great Plains: An Upstreamview Of The 8.2 Ka Cold Event, Walter E. Dean, Richard M. Forester, J. Platt Bradbury
United States Geological Survey: Staff Publications
Elk Lake, in northwestern Minnesota, contains numerous proxy records of climatic and environmental change contained in varved sediments with annual resolution for the last 10,000 years. These proxies show that about 8200 calendar years ago (8.2 cal. ka; 7300 radiocarbon years) Elk Lake went froma well-stratified lake that was wind-protected in a boreal forest to a well-mixed lake in open prairie savanna receiving northwesterly wind-blown dust, probably from the dry floor of Lake Agassiz. This change in climate marks the initiation of the widely recognized mid-Holocene “altithermal” in central North America. The coincidence of this change with the so-called 8.2 …
The Impact Of Buffer Strips And Stream-Side Grazing On Small Mammals In Southwestern Wisconsin, Erik W. Chapman, Christine A. Ribic
The Impact Of Buffer Strips And Stream-Side Grazing On Small Mammals In Southwestern Wisconsin, Erik W. Chapman, Christine A. Ribic
United States Geological Survey: Staff Publications
The practice of continuously grazing cattle along streams has caused extensive degradation of riparian habitats. Buffer strips and managed intensive rotational grazing (MIRG) have been proposed to protect and restore stream ecosystems in Wisconsin. However, the ecological implications of a switch from traditional livestock management to MIRG or buffer strip establishment have not been investigated. Differences in small mammal communities associated with riparian areas on continuously grazed and MIRG pastures, as well as vegetative buffer strips adjacent to row crops, were investigated in southwestern Wisconsin during May–September 1997 and 1998. More species (mean of 6–7) were found on the buffer …
Sources Of Terrestrially-Derived Organic Carbon In Lower Mississippi River And Louisiana Shelf Sediments: Implications For Differential Sedimentation And Transport At The Coastal Margin, Thomas S. Bianchi, Siddhartha Mitra, Brent A. Mckee
Sources Of Terrestrially-Derived Organic Carbon In Lower Mississippi River And Louisiana Shelf Sediments: Implications For Differential Sedimentation And Transport At The Coastal Margin, Thomas S. Bianchi, Siddhartha Mitra, Brent A. Mckee
United States Geological Survey: Staff Publications
In this study, we examined the temporal and spatial variability of terrestrial organic carbon sources in lower Mississippi River and Louisiana shelf sediments (during 11 cruises over a 22-month period) to further understand the sorting dynamics and selective transport of vascular plant materials within the primary dispersal system of the river. Bulk δ13C values in lower river sediments ranged from −21.90%o −24.64%o (mean = −23.2 ± 1.09%o), these values were generally more depleted than those found in shelf sediments (−22.5%o to −21.2%o). The Λ8 (Λ8 = sum of vanillyl, syringyl and cinnamyl phenols produced …
The Effect Of Soil Moisture On Mineral Nitrogen, Soil Electrical Conductivity, And Ph, Rui Zhang, Brian J. Wienhold
The Effect Of Soil Moisture On Mineral Nitrogen, Soil Electrical Conductivity, And Ph, Rui Zhang, Brian J. Wienhold
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Inorganic nitrogen in the soil is the source of N for non-legume plants. Rapid methods for monitoring changes in inorganic N concentrations would be helpful for N nutrient management. The effect of varying soil moisture content on soil mineral nitrogen, electrical conductivity (EC), and pH were studied in a laboratory experiment. Soil NO3-N increased as soil water-filled pore space (WFPS) increased from 0 to 80 cm3 cm−3. At soil moisture levels greater than 80 cm3 cm−3, NO3-N concentration declined rapidly and NH4-N concentration increased, likely due to anaerobic …
Availability Of Food Resources, Distribution Of Invasive Species, And Conservation Of A Hawaiian Bird Along A Gradient Of Elevation, Paul C. Banko, Peter T. Oboyski, John W. Slotterback, Steven J. Dougill, Daniel M. Goltz, Luanne Johnson, Megan E. Laut
Availability Of Food Resources, Distribution Of Invasive Species, And Conservation Of A Hawaiian Bird Along A Gradient Of Elevation, Paul C. Banko, Peter T. Oboyski, John W. Slotterback, Steven J. Dougill, Daniel M. Goltz, Luanne Johnson, Megan E. Laut
United States Geological Survey: Staff Publications
Aim
We evaluated how an elevation gradient affects: (1) the availability of food required by a specialist seed-eater, Loxioides bailleui Oustalet (Drepanidinae), or palila, and hence the distribution of this endangered Hawaiian bird, and (2) the distribution of alien threats to Loxioides populations, their primary foods, and their dry-forest habitat, and hence strategies for their conservation.
Location
We worked throughout the subalpine forest that encircles Mauna Kea Volcano, Hawai‘i Island, but we focused our studies mainly on the western slope between 2000 and 3000 m elevation, where the gradient of elevation was greatest and palila were most abundant.
Methods
We …
Coccidia (Apicomplexa: Eimeriidae) Of The Mammalian Order Chiroptera, Donald W. Duszynski
Coccidia (Apicomplexa: Eimeriidae) Of The Mammalian Order Chiroptera, Donald W. Duszynski
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The coccidia are protists (phylum Apicomplexa) that, likely, are both the most abundant (numbers of individual zoites) and most speciose of all the kinds of parasites found in/on mammals. They also are among the least studied and understood, with the exception of those species that cause pathology in domesticated Artiodactyla. In this review, I focus only on the largest family of the phylum, Eimeriidae Minchin, 1903, because its members often are among the most prevalent apicomplexans of mammals, and because there has never been a taxonomic summation for those species that infect Chirpotera. In all published descriptions of bat coccidia, …
Ultrastructure Of Tuzetia Weidneri Sp. N. (Microsporidia: Tuzetiidae) In Skeletal Muscle Of Litopenaeus Setiferus And Farfantepenaeus Aztecus (Crustacea: Decapoda) And New Data On Perezia Nelsoni (Microsporidia: Pereziidae) In L. Setiferus, Elizabeth U. Canning, Alan Curry, Robin M. Overstreet
Ultrastructure Of Tuzetia Weidneri Sp. N. (Microsporidia: Tuzetiidae) In Skeletal Muscle Of Litopenaeus Setiferus And Farfantepenaeus Aztecus (Crustacea: Decapoda) And New Data On Perezia Nelsoni (Microsporidia: Pereziidae) In L. Setiferus, Elizabeth U. Canning, Alan Curry, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
A new microsporidian species, Tuzetia weidneri sp. n. , is described from the skeletal muscle of the decapod crustaceans Litopenaeus setiferus and Farfantepenaeus aztecus. Fresh spores are pyriform, measuring 3.1 x 2.3 µm. All stages have unpaired nuclei. Meronts lie in direct contact with degenerate host cell cytoplasm but produce numerous small blisters at the surface. Multinucleate meronts divide by constriction into groups or chains of uninucleate products. Sporogony is initiated by deposition of a dense surface coat on the plasma membrane of uninucleate or multinucleate stages and fusion of blisters to enclose the sporont in a sporophorous vesicle …
The Structure Of The Nucleus Of Odonaticola Polyhamatus (Gregarinea: Actinocephalidae), A Parasite Of Mnais Strigata (Hagen) (Odonata: Calopterygidae), Kasumi Hoshide, John J. Janovy Jr.
The Structure Of The Nucleus Of Odonaticola Polyhamatus (Gregarinea: Actinocephalidae), A Parasite Of Mnais Strigata (Hagen) (Odonata: Calopterygidae), Kasumi Hoshide, John J. Janovy Jr.
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The nucleus of Odonaticola polyhamatus was isolated from the body and observed with light, scanning electron and transmission electron microscopy. The nucleus had a thick thread-like structure with which it was tied to the septum. This thread-like structure has not been reported or described previously. The gregarine nuclear surface was covered with a fine fibrous net. This is the first report of the surface structure of a gregarine nucleus as revealed by SEM. Inside the nuclear membrane was a thin honeycomb layer similar to that reported for some other gregarines. Several spherical nucleoli and numerous electron dense small structures were …
Potential Pathological Effects Of Blood Flukes (Digenea: Sanguinicolidae) On Pen-Reared Marine Fishes, Stephen A. Bullard, Robin M. Overstreet
Potential Pathological Effects Of Blood Flukes (Digenea: Sanguinicolidae) On Pen-Reared Marine Fishes, Stephen A. Bullard, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Sanguinicolids, or fish blood flukes, infect the vascular system of both marine and freshwater fishes, and some act as serious pathogens of hosts in aquaculture. Blood flukes typically possess a relatively benign relationship with wild fishes; however, cultured hosts near appropriate intermediate hosts (i.e., snail, bivalve, or polychaete) may accumulate heavy infections of the worms and their eggs. The resulting disease, sanguinicoliasis, has caused mass mortalities of fish reared in ponds and cages in North America, Europe, and Asia. In the life cycle, the cercaria emerges from the intermediate invertebrate host and penetrates into and matures in the definitive fish …
Hydrobiid Snails (Mollusca: Gastropoda: Rissooidea) From St. Andrew Bay, Florida, Richard W. Heard, Robin M. Overstreet, John M. Foster
Hydrobiid Snails (Mollusca: Gastropoda: Rissooidea) From St. Andrew Bay, Florida, Richard W. Heard, Robin M. Overstreet, John M. Foster
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Heleobops sp. of Hershler and Thompson appears to be the only previously published record for the gastropod family Hydrobiidae Troschel in tidal waters of the St. Andrew Bay System, Florida. Six species occurred in bayous, marshes, and brackish ponds associated with the System during studies conducted between 1984 and 1999: Texadina barretti (Morrison), Texadina sphinctostoma Abbott and Ladd, Littoridinops monroensis (Frauenfeld), Littoridinops palustris Thompson, Onobops jacksoni (Bartsch), and Heleobops sp. A. The last is an apparently undescribed species closely related to Heleobops carrikeri Davis and McKee. Based in part on this study, Heleobops sp. A, which occurs in brackish habitats …
Third Party Visitation Statutes: Society’S Changing Views About What Constitutes A Family Must Be Formally Recognized By Statute, Beth Sherman
Cardozo Journal of Conflict Resolution
This Note begins by introducing the strong historical support for a parent’s fundamental liberty interest, protected by the Fourteenth Amendment’s Due Process Clause, to control the upbringing of his or her own child. It also examines the limitations placed on that right. Section two illustrates the need to balance these two perspectives when analyzing the current debate over nonparental visitation statutes. Section three addresses how the case of Troxel v. Granville reached the United States Supreme Court and the implications of the Court’s decision. Section four focuses on New York State by considering its nonparental visitation statutes, the effect of …
2002-2003 Lindenwood University Graduate Course Catalog, Lindenwood University
2002-2003 Lindenwood University Graduate Course Catalog, Lindenwood University
Course Catalogs
Lindenwood University Graduate Course Catalog