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Articles 1 - 11 of 11

Full-Text Articles in Biochemistry, Biophysics, and Structural Biology

The Effects Of Acute And Chronic Hypoxia On Cortisol, Glucose And Lactate Concentrations In Different Populations Of Three-Spined Stickleback, E. A. O'Connor, T. G. Pottinger, L. U. Sneddon Sep 2011

The Effects Of Acute And Chronic Hypoxia On Cortisol, Glucose And Lactate Concentrations In Different Populations Of Three-Spined Stickleback, E. A. O'Connor, T. G. Pottinger, L. U. Sneddon

Aquaculture Collection

The response of individuals from three different populations of three-spined sticklebacks to acute and chronic periods of hypoxia (4.4 kPa DO, 2.2 mg l-1) were tested using measures of whole-body (WB) cortisol, glucose and lactate. Although there was no evidence of a neuroendocrine stress response to acute hypoxia, fish from the population least likely to experience hypoxia in their native habitat had the largest response to low oxygen, with significant evidence of anaerobic glycolysis after two hours of hypoxia. However, there was no measurable effect of a more prolonged period (seven days) of hypoxia on any of the ...


Interspecies Comparison Of Αii-Spectrin Abundance Between Chinook Salmon And Steelhead, Brielle D. Kemis, Ann L. Miracle, Katie A. Wagner, Christa M. Woodley Aug 2011

Interspecies Comparison Of Αii-Spectrin Abundance Between Chinook Salmon And Steelhead, Brielle D. Kemis, Ann L. Miracle, Katie A. Wagner, Christa M. Woodley

STAR (STEM Teacher and Researcher) Presentations

Salmonids, such as Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss), are a staple economic, recreational, tribal, and environmental resource, yet many populations are unsustainable. This study was part of a broad scale effort to monitor the impact of downstream migration obstacles on juvenile salmonid health and survival, which is an essential step towards increasing Smolt-to-Adult Return ratios (SARs). The objective of this study was to determine if juvenile Chinook salmon and steelhead exhibit differing quantities of alphaII-Spectrin Breakdown Products (SBDPs) over two consecutive spring migration periods, indicative of neurogenesis rate and/or biological response to head injury. AlphaII-Spectrin is ...


Stem-Boring Caterpillars Of Switchgrass In The Midwestern United States, Jarrad R. Prasifka, Jennifer E. Buhay, Thomas W. Sappington, Emily A. Heaton, Jeffrey D. Bradshaw, Michael E. Gray May 2011

Stem-Boring Caterpillars Of Switchgrass In The Midwestern United States, Jarrad R. Prasifka, Jennifer E. Buhay, Thomas W. Sappington, Emily A. Heaton, Jeffrey D. Bradshaw, Michael E. Gray

Entomology Publications

Lepidopteran stem borers were collected from switchgrass, Panicum virgatum L., tillers showing symptoms of infestation at seven locations in Illinois and Iowa, with additional observations made on larval and adult activity. Blastobasis repartella (Dietz) (Coleophoridae), whose only known host is switchgrass, was common in plots grown for >5 yr, whereas the polyphagous stalk borer, Papaipema nebris (Guenée) (Noctuidae), was abundant in newly established (i.e., first- and second-year) switchgrass. Haimbachia albescens Capps (Crambidae) was collected from two locations in Illinois, making switchgrass the first known host for this species. Entry holes made by B. repartella and H. albescens were usually ...


An Assessment Of Stable Hydrogen-Isotope Analysis Methods To Assign Geographic Origin To Migratory Red-Tailed Hawks (Buteo Jamaicensis), Carla Marie Ahlschwede May 2011

An Assessment Of Stable Hydrogen-Isotope Analysis Methods To Assign Geographic Origin To Migratory Red-Tailed Hawks (Buteo Jamaicensis), Carla Marie Ahlschwede

Environmental Studies Undergraduate Student Theses

Stable-hydrogen isotopes are becoming an increasingly popular method of studying migratory birds, though sample preparation methods may affect results. In this study I examined feathers from red-tailed hawks (Buteo jamaicensis) to determine the relationship between measure of δD due to inter-feather variation or drying methods, assessed the accuracy of results by using two birds of known-origin and estimated possible natal origins of migratory red-tailed hawks. Two feathers per individual were taken from 81 wild hawks caught at Hitchcock Nature Center near Crescent IA and from 2 rescued red-tailed hawks, Raptor Recovery Nebraska near Eagle, NE. 119 of the collected feathers ...


Determining The Composition Of The Dwelling Tubes Of Antarctic Pterobranchs, Lukasz J. Sewera Apr 2011

Determining The Composition Of The Dwelling Tubes Of Antarctic Pterobranchs, Lukasz J. Sewera

Honors Projects

Pterobranchs are a group of marine invertebrates within the Hemichordata, which share characteristics with both chordates and echinoderms. Pterobranchs live in colonies of secreted tubes, coenicia, which are composed of a gelatinous material of unknown composition. Visually, the tubes appear similar to the tunic of tunicates, a group of invertebrates within the Chordata. The nonproteinaceous tunic of tunicates is composed of cellulose, which is unusual. The goal of this study was to determine the composition of the pterobranch coenicium. Some aspects of pterobranch phylogeny are still unclear even after multiple molecular and morphological studies. Identification of any new shared characteristics ...


Vol. 97, No. 2, Pp. 177-369, Journal Of Parasitology Apr 2011

Vol. 97, No. 2, Pp. 177-369, Journal Of Parasitology

Journal of Parasitology Archives

Contents:

Distribution, Abundance, and Genetic Diversity of Clinostomum spp. Metacercariae (Trematoda: Digenea) in a Modified Ozark Stream System. RONALD M. BONETT, MICHAEL A. STEFFEN, ANA L. TRUJANO-ALVAREZ, SAMUEL D. MARTIN, CHARLES R. BURSEY, and CHRIS T. McALLISTER. . 177

Population Biology of Contracaecum rudolphii Sensu Lata (Nematoda) in the Great Cormorant (Phalacrocorax carbo) From Northeastern Poland. GERARD KANAREK. .. 185

Seasonal Occurrence of Helminths in the Anadromous Fish Coilia nasus (Engraulidae): Parasite Indicators of Fish Migratory Movements. WEN X. LI, RUI SONG, SHAN G. WU, HONG ZOU, PIN NIE, and GUI T. WANG. . . 192

Examining the Area Effect for Parasite Communities of ...


In Vivo Investigations Of Polymer Conjugates As Therapeutics, Elizabeth M. Henchey Jan 2011

In Vivo Investigations Of Polymer Conjugates As Therapeutics, Elizabeth M. Henchey

Masters Theses 1911 - February 2014

Polymer conjugates offer a way to introduce materials into the body that would normally be rejected or cause toxicity. Two polymers are investigated in vivo for uses in chemotherapeutic delivery, protein therapeutics, and DNA transfection. A novel polymer, polyMPC, has the ability to increase doxorubicin loading and its solubility, and is conjugated in a way to release its payload in a low pH environment. Through its conjugation, blood clearance time of doxorubicin is increased, and thus tumor exposure to the drug is increased with a single administration. It can be administered at ten times the concentration of free doxorubicin, and ...


Effect Of Dietary Antibacterial Peptide And Zinc-Methionine On Performance And Serum Biochemical Parameters In Piglets, J. H. Wang, C. C. Wu, J. Feng Jan 2011

Effect Of Dietary Antibacterial Peptide And Zinc-Methionine On Performance And Serum Biochemical Parameters In Piglets, J. H. Wang, C. C. Wu, J. Feng

Biochemistry Collection

The objective of this study was to evaluate the effect of dietary supplementation of antibacterial peptide and zinc methionine on performance and some serum biochemical parameters of weaned piglets. Rongchang male piglets (28 days of age, initial weight 8.4 ± 0.65 kg) were used. All piglets were randomly allotted to four diets including the control group, the antibacterial peptide (AP) group containing 10 mg antibacterial peptide/kg diet, the zinc methionine (Zn-Met) group with 1 200 zinc methionine/kg diet (equal to 200 mg Zn2+/kg diet), the zinc methionine/antibacterial peptide (Zn/AP) group containing 10 mg ...


Haemato-Biochemical Changes In Natural Cases Of Canine Babesiosis, Showkat Ahmad Shah, Naresh Kumar Sood, Srinivasa Rao Tumati Jan 2011

Haemato-Biochemical Changes In Natural Cases Of Canine Babesiosis, Showkat Ahmad Shah, Naresh Kumar Sood, Srinivasa Rao Tumati

Biochemistry Collection

Incidence of severe anemia due to babesiosis in dogs resulting in death in a short time of illness is on the increase in Punjab, during last few decades due to introduction of exotic breeds like Grey Hound, German shepherd, Doberman, Labrador and others. In the present study the hematological and biochemical changes in blood samples obtained from 4 dogs naturally infected with Babesia were evaluated. The dogs were presented to the Department of Veterinary Clinical Services Complex, GADVASU, Ludhiana from August 2008 to April 2009. The evaluation included Hemoglobin (Hb), Red Blood Cell count (RBC), Packed Cell Volume (PCV), Mean ...


Biochemical Methane Potential Of Different Organic Wastes And Energy Crops From Estonia, M. Luna-Derisco, A. Normak, K. Orupõld Jan 2011

Biochemical Methane Potential Of Different Organic Wastes And Energy Crops From Estonia, M. Luna-Derisco, A. Normak, K. Orupõld

Biochemistry Collection

The biochemical methane potential (BMP) of different Estonian substrates as alternative sources for biogas production was studied. For this purpose, the BMP test was carried out in batch mode at mesophilic temperature (36°C). Substrates were divided into 2 groups: agricultural substrates (silage, hay, cattle and pig slurry) and food industry residues (milk, brewery and cereal industry residues). Methane yields obtained were between 286–319 L kgVS-1 for silage and hay, 238–317 L kgVS-1 for animal slurry and 272–714 L kgVS-1 for agro-industrial wastes. The highest methane yield was obtained from sour cream (714 L ...


Caffeine Metabolism And Cytochrome P450 Enzyme Mrna Expression Levels Of Genetically Diverse Inbred Mouse Strains, Neal Addicott, Michael Malfatti, Gabriela G. Loots Jan 2011

Caffeine Metabolism And Cytochrome P450 Enzyme Mrna Expression Levels Of Genetically Diverse Inbred Mouse Strains, Neal Addicott, Michael Malfatti, Gabriela G. Loots

STAR (STEM Teacher and Researcher) Presentations

Cytochrome P450 (CYP) enzymes activate or eliminate medications and other xenobiotics, and Caffeine has been used as an indicator of activity for some CYPs. The natural genetic variation in the human population for caffeine metabolizing CYPs does not yet have an established animal model for comparison, but the natural variation in inbred mouse strains presents an attractive starting point. The project gave four different strains of mice a 40mg/kg dose of caffeine and sampled blood and liver tissue after 30 minutes. Samples were analyzed using High Performance Liquid Chromatography (HPLC), reverse transcription PCR (rtPCR), and quantitative PCR (qPCR). The ...