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https://www.readbyqxmd.com/read/28097071/the-fishing-and-natural-mortality-of-large-piscivorous-bull-trout-and-rainbow-trout-in-kootenay-lake-british-columbia-2008-2013
#1
Joseph L Thorley, Greg F Andrusak
BACKGROUND: Estimates of fishing and natural mortality are important for understanding, and ultimately managing, commercial and recreational fisheries. High reward tags with fixed station acoustic telemetry provides a promising approach to monitoring mortality rates in large lake recreational fisheries. Kootenay Lake is a large lake which supports an important recreational fishery for large Bull Trout and Rainbow Trout. METHODS: Between 2008 and 2013, 88 large (≥500 mm) Bull Trout and 149 large (≥500 mm) Rainbow Trout were marked with an acoustic transmitter and/or high reward ($100) anchor tags in Kootenay Lake...
2017: PeerJ
https://www.readbyqxmd.com/read/28093608/spatiotemporal-drivers-of-energy-expenditure-in-a-coastal-marine-fish
#2
Jacob W Brownscombe, Steven J Cooke, Andy J Danylchuk
Animal behavior and energy expenditure often vary significantly across the landscape, and quantifying energy expenditure over space and time provides mechanistic insight into ecological dynamics. Yet, spatiotemporal variability in energy expenditure has rarely been explored in fully aquatic species such as fish. Our objective was to quantify spatially explicit energy expenditure for a tropical marine teleost fish, bonefish (Albula vulpes), to examine how bonefish energetics vary across landscape features and temporal factors...
January 16, 2017: Oecologia
https://www.readbyqxmd.com/read/28081245/sharp-tailed-grouse-nest-survival-and-nest-predator-habitat-use-in-north-dakota-s-bakken-oil-field
#3
Paul C Burr, Aaron C Robinson, Randy T Larsen, Robert A Newman, Susan N Ellis-Felege
Recent advancements in extraction technologies have resulted in rapid increases of gas and oil development across the United States and specifically in western North Dakota. This expansion of energy development has unknown influences on local wildlife populations and the ecological interactions within and among species. Our objectives for this study were to evaluate nest success and nest predator dynamics of sharp-tailed grouse (Tympanuchus phasianellus) in two study sites that represented areas of high and low energy development intensities in North Dakota...
2017: PloS One
https://www.readbyqxmd.com/read/28065822/detecting-drug-induced-changes-in-ecg-parameters-using-jacketed-telemetry-effect-of-different-data-reduction-techniques
#4
Matthew Skinner, Guozhen Xing, Jing Lu, Jin Ren, Karen Oldman
INTRODUCTION: Continuous cardiovascular data is routinely collected during preclinical safety assessment of new medicines. This generates large datasets, which must be summarised to analyse and interpret drug effects. We assessed four methods of data reduction of continuous electrocardiogram (ECG) data and examined the impact on the statistical power of the assay. METHODS: Continuous ECG data were collected from a validation study in 6 cynomolgus monkeys using jacketed telemetry...
January 5, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28065821/an-evaluation-of-the-utility-of-lvdp-dt40-qa-interval-lvdp-dtmin-and-tau-as-indicators-of-drug-induced-changes-in-contractility-and-lusitropy-in-dogs
#5
Michael K Pugsley, Brian Guth, Alan Y Chiang, Jennifer M Doyle, Michael Engwall, Jean-Michel Guillon, Peter K Hoffmann, John E Koerner, Scott W Mittelstadt, Jennifer Beck Pierson, Eric I Rossman, Dustan R Sarazan, Stanley T Parish
INTRODUCTION: The importance of drug-induced effects on the inotropic state of the heart is well known. Unlike hemodynamic and cardiac electrophysiological methods, which have been routinely used in drug safety testing for years, the non-clinical assessment of drug effects on myocardial contractility is used less frequently with no established translation to humans. The goal of these studies was to determine whether assessment of alternate measures of cardiac inotropy could detect drug-induced changes in the contractile state of the heart using drugs known to have clinically relevant positive and negative effects on myocardial contractility...
January 5, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28049212/enhanced-hyperthermic-responses-to-lipopolysaccharide-in-mice-exposed-to-repeated-cold-stress
#6
Tomoyoshi Miyamoto, Yoshinori Funakami, Erika Kawashita, Shiori Tomita, Ai Nomura, Nanako Sugimoto, Haruka Saeki, Takaya Miyazakia, Maho Tsubota, Seiji Ichida, Atsufumi Kawabata
Lipopolysaccharide (LPS) induces hyperthermia accompanied by various other systemic inflammatory symptoms. The rodents exposed to repeated cold (RC) stress according to a specific schedule are useful as experimental models for autonomic imbalance or fibromyalgia. It is now proven that RC-stressed mice exhibit tolerance to LPS, we examined thermal responses to LPS challenge in RC-stressed mice by monitoring core temperature using the telemetry system. Systemic administration of LPS caused bimodal hyperthermic responses in RC-stressed and unstressed mice...
January 4, 2017: Pharmacology
https://www.readbyqxmd.com/read/28031799/assessing-polar-bear-ursus-maritimus-population-structure-in-the-hudson-bay-region-using-snps
#7
Michelle Viengkone, Andrew Edward Derocher, Evan Shaun Richardson, René Michael Malenfant, Joshua Moses Miller, Martyn E Obbard, Markus G Dyck, Nick J Lunn, Vicki Sahanatien, Corey S Davis
Defining subpopulations using genetics has traditionally used data from microsatellite markers to investigate population structure; however, single-nucleotide polymorphisms (SNPs) have emerged as a tool for detection of fine-scale structure. In Hudson Bay, Canada, three polar bear (Ursus maritimus) subpopulations (Foxe Basin (FB), Southern Hudson Bay (SH), and Western Hudson Bay (WH)) have been delineated based on mark-recapture studies, radiotelemetry and satellite telemetry, return of marked animals in the subsistence harvest, and population genetics using microsatellites...
December 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28028193/smooth-muscle-endothelin-b-receptors-regulate-blood-pressure-but-not-vascular-function-or-neointimal-remodeling
#8
Eileen Miller, Alicja Czopek, Karolina M Duthie, Nicholas S Kirkby, Elisabeth E Fransen van de Putte, Sibylle Christen, Robert A Kimmitt, Rebecca Moorhouse, Raphael F P Castellan, Yuri V Kotelevtsev, Rhoda E Kuc, Anthony P Davenport, Neeraj Dhaun, David J Webb, Patrick W F Hadoke
The role of smooth muscle endothelinB (ETB) receptors in regulating vascular function, blood pressure (BP), and neointimal remodeling has not been established. Selective knockout mice were generated to address the hypothesis that loss of smooth muscle ETB receptors would reduce BP, alter vascular contractility, and inhibit neointimal remodeling. ETB receptors were selectively deleted from smooth muscle by crossing floxed ETB mice with those expressing cre-recombinase controlled by the transgelin promoter. Functional consequences of ETB deletion were assessed using myography...
February 2017: Hypertension
https://www.readbyqxmd.com/read/28026743/glucose-monitoring-in-individuals-with-diabetes-using-a-long-term-implanted-sensor-telemetry-system-and-model
#9
Joseph Lucisano, Timothy Routh, Joe Lin, David Gough
OBJECTIVE: The use of a fully implanted, first-generation prototype sensor/telemetry system is described for long-term monitoring of subcutaneous tissue glucose in a small cohort of people with diabetes. METHODS: Sensors are based on a membrane containing immobilized glucose oxidase and catalase coupled to electrochemical oxygen detection and telemetry systems, integrated as an implant. The devices remained implanted for up to 180 days, with signals transmitted every 2 minutes to external receivers...
October 19, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28025531/small-uas-based-wind-feature-identification-system-part-1-integration-and-validation
#10
Leopoldo Rodriguez Salazar, Jose A Cobano, Anibal Ollero
This paper presents a system for identification of wind features, such as gusts and wind shear. These are of particular interest in the context of energy-efficient navigation of Small Unmanned Aerial Systems (UAS). The proposed system generates real-time wind vector estimates and a novel algorithm to generate wind field predictions. Estimations are based on the integration of an off-the-shelf navigation system and airspeed readings in a so-called direct approach. Wind predictions use atmospheric models to characterize the wind field with different statistical analyses...
December 23, 2016: Sensors
https://www.readbyqxmd.com/read/28013064/nest-site-selection-nesting-behaviour-and-spatial-ecology-of-female-nile-crocodiles-crocodylus-niloticus-in-south-africa
#11
Xander Combrink, Jonathan K Warner, Colleen T Downs
Nesting biology and ecology have been investigated for Nile crocodiles (Crocodylus niloticus), but information on behaviour and movement patterns of nesting females during nest guarding is scant. Consequently, we investigated the home ranges, nest-site selection strategies, movement patterns, activity levels and nest fidelity of four nesting females using telemetry. Gravid females selected winter basking/breeding areas close (351±2m) to nest-sites. Mean home range and core-use areas of nesting females were 8539±4752m(2), and 4949±3302m(2) respectively...
December 21, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/28012529/cone-beam-computed-tomography-in-children-with-cochlear-implants-the-effect-of-electrode-array-position-on-ecap
#12
Marine Lathuillière, Fanny Merklen, Jean-Pierre Piron, Marielle Sicard, Françoise Villemus, Nicolas Menjot de Champfleur, Frédéric Venail, Alain Uziel, Michel Mondain
OBJECTIVES: To assess the feasibility of using cone-beam computed tomography (CBCT) in young children with cochlear implants (CIs) and study the effect of intracochlear position on electrophysiological and behavioral measurements. METHODS: A total of 40 children with either unilateral or bilateral cochlear implants were prospectively included in the study. Electrode placement and insertion angles were studied in 55 Cochlear(®) implants (16 straight arrays and 39 perimodiolar arrays), using either CBCT or X-ray imaging...
January 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28011882/mycophenolate-mofetil-prevents-cerebrovascular-injury-in-stroke-prone-spontaneously-hypertensive-rats
#13
Isha Dhande, Yaming Zhu, Michael C Braun, M John Hicks, Scott E Wenderfer, Peter A Doris
BACKGROUND AND PURPOSE: Stroke-prone spontaneously hypertensive rats (SHR-A3) develop strokes and progressive kidney disease as a result of naturally occurring genetic variations. We recently identified genetic variants in immune signaling pathways that contribute to end-organ injury. The present study was designed to test the hypothesis that a dysregulated immune response promotes stroke susceptibility. METHODS: 20-week old male SHR-A3 rats were salt loaded and treated with the immunosuppressant mycophenolate mofetil (MMF, 25 mg/kg/day, p...
December 23, 2016: Physiological Genomics
https://www.readbyqxmd.com/read/28002495/space-use-and-habitat-selection-by-resident-and-transient-red-wolves-canis-rufus
#14
Joseph W Hinton, Christine Proctor, Marcella J Kelly, Frank T van Manen, Michael R Vaughan, Michael J Chamberlain
Recovery of large carnivores remains a challenge because complex spatial dynamics that facilitate population persistence are poorly understood. In particular, recovery of the critically endangered red wolf (Canis rufus) has been challenging because of its vulnerability to extinction via human-caused mortality and hybridization with coyotes (Canis latrans). Therefore, understanding red wolf space use and habitat selection is important to assist recovery because key aspects of wolf ecology such as interspecific competition, foraging, and habitat selection are well-known to influence population dynamics and persistence...
2016: PloS One
https://www.readbyqxmd.com/read/28001336/decadal-shifts-in-autumn-migration-timing-by-pacific-arctic-beluga-whales-are-related-to-delayed-annual-sea-ice-formation
#15
Donna D W Hauser, Kristin L Laidre, Kathleen M Stafford, Harry L Stern, Robert S Suydam, Pierre R Richard
Migrations are often influenced by seasonal environmental gradients that are increasingly being altered by climate change. The consequences of rapid changes in Arctic sea ice have the potential to affect migrations of a number of marine species whose timing is temporally matched to seasonal sea ice cover. This topic has not been investigated for Pacific Arctic beluga whales (Delphinapterus leucas) that follow matrilineally maintained autumn migrations in the waters around Alaska and Russia. For the sympatric Eastern Chukchi Sea ('Chukchi') and Eastern Beaufort Sea ('Beaufort') beluga populations, we examined changes in autumn migration timing as related to delayed regional sea ice freeze-up since the 1990s, using two independent data sources (satellite telemetry data and passive acoustics) for both populations...
December 21, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27999689/bradycardia-associated-with-steroid-use-for-laryngeal-edema-in-an-adult-a-case-report-and-literature-review
#16
Preeti R John, Ariana Khaladj-Ghom, Kimberly L Still
Steroids are used for specific indications in the perioperative period to reduce laryngeal or spinal cord edema, or for prophylaxis and treatment of postoperative nausea and vomiting. Given the other potential causes for hemodynamic alterations in the perioperative setting, it is important for physicians to be aware of cardiovascular side effects of short term steroids. Changes in blood pressure and heart rate, cardiac dysrhythmias, and even death have been described in patients receiving short term intravenous steroids...
2016: Case Reports in Cardiology
https://www.readbyqxmd.com/read/27993561/loss-of-smooth-muscle-cell-disintegrin-and-metalloproteinase-17-transiently-suppresses-angiotensin-ii-induced-hypertension-and-end-organ-damage
#17
Mengcheng Shen, Jude Morton, Sandra T Davidge, Zamaneh Kassiri
Hypertension is associated with hypertrophy and hyperplasia of smooth muscle cells (SMCs). Disintegrin and metalloproteinase 17 (ADAM17) is a membrane-bound enzyme reported to mediate SMC hypertrophy through activation of epidermal growth factor receptor (EGFR). We investigated the role of ADAM17 in Ang II-induced hypertension and end-organ damage. VSMC was isolated from mice with intact ADAM17 expression (Adam17(f/f)) or lacking ADAM17 in the SMC (Adam17(f/f)/Cre(Sm22)). Human VSMCs were isolated from the aorta of donors, and ADAM17 deletion was achieved by siRNA transfection...
December 16, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27992351/bio-witel-a-low-power-integrated-wireless-telemetry-system-for-healthcare-applications-in-401-406-mhz-band-of-medradio-spectrum
#18
Abhishek Srivastava, Nithin Sankar, Baibhab Chatterjee, Devarshi Das, Meraj Ahmad, Rakesh Kukkundoor, Vivek Saraf, Ananthpadmanabhan Jayachandran, Dinesh Sharma, Maryam Baghini
This paper presents a low power integrated wireless telemetry system (Bio-WiTel) for healthcare applications in 401- 406 MHz frequency band of Medical Device RadioCommunication (MedRadio) spectrum. In this work, necessary design considerations for telemetry system for short range (upto 3 m) communication of bio-signals are presented. These considerations greatly help in taking important design decisions, which eventually lead to a simple, low power, robust and reliable wireless system implementation. Transmitter (TX) and receiver (RX) of Bio-WiTel system have been fabricated in 180 nm mixed mode CMOS technology...
December 14, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27984681/movements-of-a-deep-water-fish-establishing-marine-fisheries-management-boundaries-in-coastal-arctic-fisheries
#19
Nigel E Hussey, Kevin J Hedges, Amanda N Barkley, Margaret A Treble, Iva Peklova, Dale M Webber, Steven H Ferguson, David J Yurkowski, Steven T Kessel, Jeannette M Bedard, Aaron T Fisk
Management boundaries that define populations or stocks of fish form the basis of fisheries planning. In the Arctic, decreasing sea ice extent is driving increasing fisheries development highlighting the need for ecological data to inform management. In Cumberland Sound, southwest Baffin Island, an indigenous community fishery was established in 1987 targeting Greenland halibut (Reinhardtius hippoglossoides) through the ice. Following its development, the Cumberland Sound Management Boundary (CSMB) was designated and a total allowable catch (TAC) assigned to the fishery...
December 16, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27984657/individual-isotopic-specialisations-predict-subsequent-inter-individual-variation-in-movement-in-a-freshwater-fish
#20
P M Harrison, L F G Gutowsky, E G Martins, T D Ward, D A Patterson, S J Cooke, M Power
Despite many similarities and intuitive links between individual dietary specialisation and behavioural inter-individual variation, these phenomena have been studied in isolation, and empirical data confirming relationships between these intraspecific variance sources are lacking. Here we use stable isotope analysis and acoustic telemetry to test the hypothesis that individual specialisation in trophic (δ(15) N) and littoral/pelagic prey reliance (δ(13) C) co-vary with inter-individual variation in movement in a group of 34 free-swimming burbot (Lota lota)...
December 16, 2016: Ecology
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