By National Research Council, Division on Earth and Life Studies, Commission on Life Sciences, Board on Environmental Studies and Toxicology, Committee on Animals as Monitors of Environmental Hazards
Learning animals within the setting could be a life like and hugely precious method of deciding upon unknown chemical contaminants sooner than they reason human damage. "Animals as Sentinels of Environmental health and wellbeing dangers" offers an outline of animal-monitoring courses, together with distinct case reviews of the way animal illnesses - similar to the results of DDT on wild poultry populations - have led researchers to the resources of human overall healthiness risks. The authors research the elements and features required for a good animal-monitoring application, they usually evaluation quite a few present courses, together with in situ learn, the place an animal is put in a typical surroundings for tracking reasons.
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Extra info for Animals as Sentinels of Environmental Health Hazards
In the determination of plant contamination, herbivorous animals are especially useful as sentinels. If a particular species or type of plant (for example, shrubs or trees) is of interest, an animal for which that plant constitutes a major portion of the diet should be selected. If all plants in a given area are of equal interest, an animal with broad and varied eating habits should be used. For example, deer are primarily browsers and prefer to eat woody plants, whereas sheep are primarily grazers and prefer to eat grasses; generalists, such as rabbits and goats, eat both.
Once an animal (or a human) has been exposed to a toxic chemical, a series or set of biologic events often can be detected. If an animal is to function as a sentinel, biologic responses must be observed soon after exposure. Therefore, changes in ordinarily measured biologic characteristics, such as the hematologic profile and serum chemical values, probably are more generally useful end points than are reproductive characteristics, mutagenesis, teratogenesis, or neoplasia. Structural changes generally are easier to measure than functional changes, but both can provide important information after exposure.
Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot be retained, and some typographic errors may have been accidentally inserted. Please use the print version of this publication as the authoritative version for attribution. CONCEPTS AND DEFINITIONS 40 counts require accurate inventories of household pets. The Tufts Center for Animals and Public Policy recently has undertaken surveys of pet ownership in New England to determine who owns pets, the types of pets owned, and the pet population.
Animals as Sentinels of Environmental Health Hazards by National Research Council, Division on Earth and Life Studies, Commission on Life Sciences, Board on Environmental Studies and Toxicology, Committee on Animals as Monitors of Environmental Hazards