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Page 3911, results 97751 - 97775

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Effects of Mycoplasma anatis and cold stress on hatching success and growth of mallard ducklings
M.D. Samuel, Diana R. Goldberg, C. B. Thomas, P. Sharp
1995, Journal of Wildlife Diseases (31) 172-178
We inoculated game-farm mallard (Anas platyrhynchos) eggs and 1-day-old birds with Mycoplasma anatis to determine its effect on hatching success and growth rates of ducklings. Inoculations of eggs reduced hatching success, hatchling size, and duckling growth rates, compared to controls. Intratracheal inoculations of 1-day-old birds did not affect growth rates. Hatchlings and...
Introduced species, zebra mussels in North America
Don W. Schloesser
William A. Nierenberg, editor(s)
1995, Book chapter, Encyclopedia of environmental biology
The discovery of zebra mussels in North America in 1988 raised concern for water users because the species became abundant enough to obstruct the flow of water in human-made structures such as pipes and screens. This work reviews the biology, distribution, and impacts of zebra mussels in the context...
Non-native animals on public lands
Charles A. Drost, Gary M. Fellers
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Non-native plants and animals have become part of our surroundings, in cities, agricultural areas, and wildlands. While there are many beneficial purposes for non-native animals, such as for food and sport hunting and as agricultural animals, the introduction of some has had major negative economic consequences (Palmer 1899), and adverse...
Detection of sea otters in boat-based surveys of Prince William Sound, Alaska
Mark S. Udevitz, James L. Bodkin, Daniel P. Costa
1995, Marine Mammal Science (11) 59-71
Boat-based surveys have been commonly used to monitor sea otter populations, but there has been little quantitative work to evaluate detection biases that may affect these surveys. We used ground-based observers to investigate sea otter detection probabilities in a boat-based survey of Prince William Sound, Alaska. We estimated that 30%...
Captive propagation, introduction, and translocation programs for wildlife vertebrates
F. Joshua Dein, Kathryn A. Converse, Christy Wolf
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Captive propagation, introduction, and translocation (relocation) programs for many animals have been undertaken by federal, state, and private agencies for more than 20 years. These programs help aid the recovery of endangered and threatened species, reestablish lost species, augment declining populations, increase recreational opportunities, reduce nuisance species, and introduce non-native...
Population differentiation in Pacific salmon: local adaptation, genetic drift, or the environment?
Milo D. Adkison
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 2762-2777
Morphological, behavioral, and life-history differences between Pacific salmon (Oncorhynchus spp.) populations are commonly thought to reflect local adaptation, and it is likewise common to assume that salmon populations separated by small distances are locally adapted. Two alternatives to local adaptation exist: random genetic differentiation owing to genetic drift and founder...
Wildlife
F. J. Dein, Glenn H. Olsen
Bernard E. Rollin, M.L. Kesel, editor(s)
1995, Book chapter, The Experimental Animal in Biomedical Research Volume II: Care, Husbandry, and Well-being an Overview by Species
Top-level carnivores and ecosystem effects: Questions and approaches
J. A. Estes
C.G. Jones, J.H. Lawton, editor(s)
1995, Linking Species and Ecosystems 151-158
Top-level carnivores comprise a diverse array of taxa and occur in most natural ecosystems. This chapter considers three main questions: What are the ecological and evolutionary effects of top-level carnivores, how general are they, and under what conditions do they occur? To answer these questions one first must determine whether...
Canvasback ducks
William L. Hohman, G.Michael Haramis, Dennis G. Jorde, Carl E. Korschgen, John Y. Takekawa
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Canvasbacks (Aythya valisineria) are unique to North America and are one of our most widely recognized waterfowl species. Unlike other ducks that nest and feed in uplands, diving ducks such as canvasbacks are totally dependent on aquatic habitats throughout their life cycle. Canvasbacks nest in prairie, parkland, subarctic, and Great...