scholarly journals Trapping White-Tailed Deer (Artiodactyla: Cervidae) in Suburbia for Study of Tick–Host Interaction

2020 ◽  
Vol 20 (6) ◽  
Author(s):  
Patrick Roden-Reynolds ◽  
Erika T Machtinger ◽  
Andrew Y Li ◽  
Jennifer M Mullinax

Abstract Live capture of white-tailed deer (Odocoileus virginianus) (Zimmermann, 1780) is often necessary for research, population control, disease monitoring, and parasite surveillance. We provide our deer trapping protocol used in a tick-host vector ecology research project and recommendations to improve efficiency of deer trapping programs using drop nets in suburban areas. We captured 125 deer across two trapping seasons. Generally, lower daily minimum temperatures were related to increased capture probability, along with the presence of snow. Our most successful trapping sites were less forested, contained more fragmentation, and greater proportion of human development (buildings, roads, recreational fields). To improve future suburban deer trapping success, trapping efforts should include areas dominated by recreational fields and should not emphasize remote, heavily forested, less fragmented parks. Concurrently, our study illustrated the heterogeneous nature of tick distributions, and we collected most ticks from one trapping site with moderate parameter values between the extremes of the most developed and least developed trapping sites. This emphasized the need to distribute trapping sites to not only increase your capture success but to also trap in areas across varying levels of urbanization and fragmentation to increase the probability of parasite collection.

2020 ◽  
Vol 25 (7) ◽  
pp. 1-9
Author(s):  
Vicki J Adams

This article summarises the surgical and non-surgical options for desexing dogs, using standardised terminology by defining the meaning of commonly used terms. Desexing has been historically recommended to help with population control, disease prevention and behaviour modification. Surgical methods of gonadectomy are the most common method for desexing in both owned and unowned dogs, with orchiectomy being the most common method of desexing male dogs. Surgical methods of desexing in females may refer to ovariohysterectomy, ovariectomy, salpingectomy or hysterectomy with or without an ovarian autograft (referred to as a so-called ‘ovary-sparing spay’). Non-surgical desexing methods include three broad categories: hormonal, immunological, and chemical or physical methods. The use of a gonadotropin-releasing hormone agonist as a method of inducing reversible infertility in dogs is discussed in detail, including a review of the physiological effects of surgical gonadectomy compared to a gonadotropin-releasing hormone agonist and potential health effects of each. There is a growing body of literature on the disease risks associated with whether a dog is intact or desexed, and by which method it has been desexed. This will be discussed in the next article.


2002 ◽  
Vol 181 (4) ◽  
pp. 321-325 ◽  
Author(s):  
Robin G. McCreadie

BackgroundSpecialised services should be developed to help people with schizophrenia and associated substance misuse. The extent of the problem therefore needs to be known.AimsTo determine the use of drugs, alcohol and tobacco by people with schizophrenia drawn from rural, suburban and urban settings, and to compare use by general population control subjects.MethodPeople with schizophrenia (n=316) and general population controls of similar gender distribution, age and postcode area of residence (n=250) were identified in rural, urban and suburban areas of Scotland. Use of drugs and alcohol was assessed by the Schedules for Clinical Assessment in Neuropsychiatry, and use of tobacco by a questionnaire.ResultsMore patients than controls reported problem use of drugs in the past year (22 (7%) v. 5 (2%)) and at some time before then (50 (20%) v. 15 (6%)) and problem use of alcohol in the past year (42 (17%) v. 25 (10%)) but not at sometime previously (99 (40%) v. 84 (34%)). More patients were current smokers (162 (65%) v. 99(40%)).ConclusionsProblem use of drugs and alcohol by people with schizophrenia is greater than in the general population, but absolute numbers are small. Tobacco use is the greatest problem.


1972 ◽  
Author(s):  
Thomas Poffenberger ◽  
Robert Buckhout ◽  
Martin Rosenman ◽  
Eugene Weiss ◽  
Nancy Russo

1987 ◽  
Vol 26 (06) ◽  
pp. 248-252 ◽  
Author(s):  
M. J. van Eenige ◽  
F. C. Visser ◽  
A. J. P. Karreman ◽  
C. M. B. Duwel ◽  
G. Westera ◽  
...  

Optimal fitting of a myocardial time-activity curve is accomplished with a monoexponential plus a constant, resulting in three parameters: amplitude and half-time of the monoexponential and the constant. The aim of this study was to estimate the precision of the calculated parameters. The variability of the parameter values as a function of the acquisition time was studied in 11 patients with cardiac complaints. Of the three parameters the half-time value varied most strongly with the acquisition time. An acquisition time of 80 min was needed to keep the standard deviation of the half-time value within ±10%. To estimate the standard deviation of the half-time value as a function of the parameter values, of the noise content of the time-activity curve and of the acquisition time, a model experiment was used. In most cases the SD decreased by 50% if the acquisition time was increased from 60 to 90 min. A low amplitude/constant ratio and a high half-time value result in a high SD of the half-time value. Tables are presented to estimate the SD in a particular case.


2016 ◽  
Vol 38 (1) ◽  
pp. 47-65
Author(s):  
Keith Clavin

The last several decades have witnessed a drastic increase in ecological writing, but also a substantial lack in regards to the discussion of human population control. This article argues that the deficiency has been reproduced within several recent examples of eco-cinema, Snowpiercer and Mad Max: Fury Road. Despite strong conservationist themes and narratives encouraging social revolution, the films encounter similar theoretical difficulties, and enact similar resulting absences, within their representational fields. As a consequence, the environmental topics are filtered through an anthropocentric lens that generates a set of paradoxes regarding human consumption, sacrifice and the visualisation of future sustainable states.


2018 ◽  
Vol 9 (03) ◽  
pp. 20544-20552
Author(s):  
Ni Putu Rista Kusumadewi ◽  
I Nengah Sudja ◽  
I Wayan Sujana

This study aims to examine and analyze the relationship between leadership style, work environment, job satisfaction and employee performance. This research was conducted at PT. Khrisna Multi Lintas Cemerlang with the research population were all employees who work in the company. All data obtained from questionnaires were suitable for use, then were analyzed by using structural equation model based on variant analysis which is known as Partial Least Square (PLS). The result of this research shows that the leadership style has positive and significant effect on employee performance, the work environment has positive and significant effect on employee performance, the leadership style has positive and significant effect on job satisfaction, the work environment has positive and significant effect on job satisfaction and job satisfaction has positive and significant on employee performance. The implication of this research was that the leadership needs to give freedom to subordinate to express their opinions, the workplace air temperature was well regulated, the work that was charged according to the ability and expertise, always guided by the company standard in carrying out each task and the employee has high knowledge in solving problem


2015 ◽  
Vol 6 (1) ◽  
pp. 63-69
Author(s):  
S. Szegedi ◽  
I. Lázár ◽  
T. Tóth

This article has been withdrawn - upon request by authors - by Akadémiai Kiadó due to suspected plagiarism.


Author(s):  
Yaniv Aspis ◽  
Krysia Broda ◽  
Alessandra Russo ◽  
Jorge Lobo

We introduce a novel approach for the computation of stable and supported models of normal logic programs in continuous vector spaces by a gradient-based search method. Specifically, the application of the immediate consequence operator of a program reduct can be computed in a vector space. To do this, Herbrand interpretations of a propositional program are embedded as 0-1 vectors in $\mathbb{R}^N$ and program reducts are represented as matrices in $\mathbb{R}^{N \times N}$. Using these representations we prove that the underlying semantics of a normal logic program is captured through matrix multiplication and a differentiable operation. As supported and stable models of a normal logic program can now be seen as fixed points in a continuous space, non-monotonic deduction can be performed using an optimisation process such as Newton's method. We report the results of several experiments using synthetically generated programs that demonstrate the feasibility of the approach and highlight how different parameter values can affect the behaviour of the system.


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