Population Dynamics of Ectoparasites on the Gray Squirrel (Sciurus Carolinensis) in Northwest Arkansas, U.S.A. PDF Download
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Author: David E. Wooten
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 98
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Book Description
Author: David E. Wooten
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 98
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Book Description
Author: Amelia Jane Brereton
Publisher:
ISBN:
Category : Gray squirrel
Languages : en
Pages : 540
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Book Description
Finally, our findings suggest that squirrel control influences the dynamics of both vector-borne microparasites and ectoparasites in the grey squirrel population. In general, the findings of this study are consistent with the use of squirrel control for red squirrel conservation and reduction of parasite prevalences. However, a wide range of factors must be considered in order to understand parasite dynamics in invasive hosts, and the importance of factors such as introduction, native host distributions and control vary for parasites with different hosts and transmission routes.
Author:
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 272
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 1002
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Author: N.C. Stenseth
Publisher: Springer Science & Business Media
ISBN: 9401123381
Category : Science
Languages : en
Pages : 359
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4.1.1 Demographic significance Confined populations grow more rapidly than populations from which dispersal is permitted (Lidicker, 1975; Krebs, 1979; Tamarin et at., 1984), and demography in island populations where dispersal is restricted differs greatly from nearby mainland populations (Lidicker, 1973; Tamarin, 1977, 1978; Gliwicz, 1980), clearly demonstrating the demographic signi ficance of dispersal. The prevalence of dispersal in rapidly expanding populations is held to be the best evidence for presaturation dispersal. Because dispersal reduces the growth rate of source populations, it is generally believed that emigration is not balanced by immigration, and that mortality of emigrants occurs as a result of movement into a 'sink' of unfavourable habitat. If such dispersal is age- or sex-biased, the demo graphy of the population is markedly affected, as a consequence of differ ences in mortality in the dispersive sex or age class. Habitat heterogeneity consequently underlies this interpretation of dispersal and its demographic consequences, although the spatial variability of environments is rarely assessed in dispersal studies.
Author: José Ramírez Pulido
Publisher:
ISBN: 9781929330270
Category : Mammals
Languages : en
Pages : 69
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Author: Loreen A. Ryan
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 44
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Author: Zdenek Hubálek
Publisher: Springer Science & Business Media
ISBN: 9048196574
Category : Medical
Languages : en
Pages : 459
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Book Description
This book presents the state of art in the field of microbial zoonoses and sapronoses. It could be used as a textbook or manual in microbiology and medical zoology for students of human and veterinary medicine, including Ph.D. students, and for biomedicine scientists and medical practitioners and specialists as well. Surprisingly, severe zoonoses and sapronoses still appear that are either entirely new (e.g., SARS), newly recognized (Lyme borreliosis), resurging (West Nile fever in Europe), increasing in incidence (campylobacterosis), spatially expanding (West Nile fever in the Americas), with a changing range of hosts and/or vectors, with changing clinical manifestations or acquiring antibiotic resistance. The collective term for those diseases is (re)emerging infections, and most of them represent zoonoses and sapronoses (the rest are anthroponoses). The number of known zoonotic and sapronotic pathogens of humans is continually growing − over 800 today. In the introductory part, short characteristics are given of infectious and epidemic process, including the role of environmental factors, possibilities of their epidemiological surveillance, and control. Much emphasis is laid on ecological aspects of these diseases (haematophagous vectors and their life history; vertebrate hosts of zoonoses; habitats of the agents and their geographic distribution; natural focality of diseases). Particular zoonoses and sapronoses are then characterized in the following brief paragraphs: source of human infection; animal disease; transmission mode; human disease; epidemiology; diagnostics; therapy; geographic distribution.
Author: A. Alonso Aguirre
Publisher: Oxford University Press
ISBN: 0199909059
Category : Science
Languages : en
Pages : 672
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Book Description
In recent years, species and ecosystems have been threatened by many anthropogenic factors manifested in local and global declines of populations and species. Although we consider conservation medicine an emerging field, the concept is the result of the long evolution of transdisciplinary thinking within the health and ecological sciences and the better understanding of the complexity within these various fields of knowledge. Conservation medicine was born from the cross fertilization of ideas generated by this new transdisciplinary design. It examines the links among changes in climate, habitat quality, and land use; emergence and re-emergence of infectious agents, parasites and environmental contaminants; and maintenance of biodiversity and ecosystem functions as they sustain the health of plant and animal communities including humans. During the past ten years, new tools and institutional initiatives for assessing and monitoring ecological health concerns have emerged: landscape epidemiology, disease ecological modeling and web-based analytics. New types of integrated ecological health assessment are being deployed; these efforts incorporate environmental indicator studies with specific biomedical diagnostic tools. Other innovations include the development of non-invasive physiological and behavioral monitoring techniques; the adaptation of modern molecular biological and biomedical techniques; the design of population level disease monitoring strategies; the creation of ecosystem-based health and sentinel species surveillance approaches; and the adaptation of health monitoring systems for appropriate developing country situations. New Directions of Conservation Medicine: Applied Cases of Ecological Health addresses these issues with relevant case studies and detailed applied examples. New Directions of Conservation Medicine challenges the notion that human health is an isolated concern removed from the bounds of ecology and species interactions. Human health, animal health, and ecosystem health are moving closer together and at some point, it will be inconceivable that there was ever a clear division.
Author: Uldis Roze
Publisher: Cornell University Press
ISBN: 9780801446467
Category : North American porcupine
Languages : en
Pages : 302
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Book Description
"Long and sympathetic watching, radio tracking, chemical analysis are all part of this naturalist's ingenious and peaceable arsenal of inquiry into the lives of porcupines."--Scientific American
