By Gary A. Wobeser
Wildlife ailments became more and more vital lately because of their impact upon human healthiness, veterinary drugs, natural world, and conservation biology.
Gary Wobeser's profitable ebook from 1994 has been thoroughly up to date and enlarged in a brand new moment version. An in-depth evaluate of the to be had ideas for the research and administration of disorder in free-ranging animals is supplied. the topics are illustrated with examples drawn from world wide, with emphasis at the specific standards curious about operating with wild animals. strategies are assessed severely with reference to their efficacy and effectiveness. The e-book attracts at the author’s education as a flora and fauna biologist and veterinarian and his event over 4 many years with natural world disease.
From the reports of the 1st edition
"... has performed an admirable activity of outlining the issues linked to diagnosing and controlling disorder in flora and fauna populations. ... the writer has commendably awarded a tough subject and has proven that the customarily profitable method of treating affliction in household animals is intensely tough and infrequently winning in flora and fauna populations. ... i like to recommend this booklet to all who're trying to find an creation to the research and managment of sickness in wildlife." (Canadian Veterinary Journal)"... the writer has made an incredible contribution to the sector by means of supplying a conceptual framework for flora and fauna illness investigations and by way of highlighting the inadequacies that regularly exist. His willingness to problem dogma and constructively current views according to a mixture of in depth literature assessment, own reports, and ideology is among the values of this good prepared and straightforward to learn ebook. ... this book could be learn via biologists, directors, and affliction experts having accountability for combatting sickness in populations of free-living wildlife." (Journal of natural world Diseases)
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Extra resources for Disease in Wild Animals: Investigation and Management
Susser (1973) identified two general properties that must exist in any causal relationship: direction and time-sequence. The first of these implies that a change in one variable causes a change in another variable and that the reverse is not true. In other words, there is an independent and a dependent variable. For example, we might consider the relationship between the bacterium Pasteurella multocida and the occurrence of hepatic necrosis in ducks. Presence of the pathogenic bacterium may determine the occurrence of hepatic necrosis but presence or absence of foci of necrosis in the liver is unlikely to influence the presence of the bacterium.
Some methods that have been used in establishing causation, including Koch’s postulates, were introduced in Chap. , Woods et al. (1999)]. S. Mill, can be used to infer causal relationships. These include: – method of agreement: If a disease occurs under a variety of circumstances, in which there is only one factor in common, then that factor may be a cause. A syndrome characterized by severe and often fatal degeneration of skeletal muscle has been observed in a wide variety of mammalian and avian species in association with capture or handling.
If an animal must use scarce resources to defend against disease or to repair damage caused by disease agents, less resources will be available for reproduction, predator avoidance, or maintenance under inclement conditions. The affected individuals then may be at a selective disadvantage within the population. The interactions can be unexpected, and even the cost of mounting a successful defense against a potential disease agent can have serious consequences. For instance, mounting an immune response to an innocuous antigen may lower reproductive output (Ilmonen et al.
Disease in Wild Animals: Investigation and Management by Gary A. Wobeser