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The Seasonal Feeding Habits Of The River Otter Lutra Canadensis In Ditches Of The Great Dismal Swamp
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Book Synopsis The Seasonal Feeding Habits of the River Otter (Lutra Canadensis) in Ditches of the Great Dismal Swamp by : Ronnie M. Pierce
Download or read book The Seasonal Feeding Habits of the River Otter (Lutra Canadensis) in Ditches of the Great Dismal Swamp written by Ronnie M. Pierce and published by . This book was released on 1979 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Audubon Wildlife Report 1988/1989 by : William J. Chandler
Download or read book Audubon Wildlife Report 1988/1989 written by William J. Chandler and published by Academic Press. This book was released on 2013-09-24 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: Audubon Wildlife Report 1988/1989 focuses on federal wildlife conservation policy, with extensive background information on the history, legal authorities, and administrative structure of federal wildlife agencies and programs. The report also includes in-depth treatment of significant problems, issues, and developments including wildlife. The text is divided into five parts. Part One features an agency related to wildlife conservation, which is The National Marine Fisheries Service in this volume. Part Two covers wildlife issues in national forests and national parks, as well as legal developments affecting wildlife. Part Three deals with challenges in conservation such as wildlife and water projects on the Platte River, international wildlife trade, and plastic debris and its effects on marine wildlife. Part Four discusses species accounts such as the moose, the Florida panther, and the common barn owl. Part Five consists of appendices which indexes directories of conservation agencies, congressional contacts, and the endangered species list. The book is recommended for biologists, conservationists, and environmentalists who would like to know more about the status of endangered species, as well as the problems and programs of certain conservation agencies.
Book Synopsis Food Habits of the River Otter in Suisun Marsh, Central California by : William Ernest Jr Grenfell
Download or read book Food Habits of the River Otter in Suisun Marsh, Central California written by William Ernest Jr Grenfell and published by . This book was released on 1974 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1992 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Food Habits of a Re-introduced River Otter (Lontra Canadensis) Population in Western New York by : Melissa Skyer
Download or read book Food Habits of a Re-introduced River Otter (Lontra Canadensis) Population in Western New York written by Melissa Skyer and published by . This book was released on 2006 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: "River otters were re-introduced to Western New York by the Department of Environmental Conservation between 1995 and 2000. The success of this population relies heavily on the availability of suitable prey. Diet was investigated via frequency of prey occurrence in scats from 2004-2006. Overall diet was comprised mostly of fish and crayfish. The major fish taxa were Centrarchidae (sunfish), Cyprinidae (carp), and Salmonidae (trout); less common were Esocidae (pike) and Castostomidae (sucker). All fish species combined ocurred at 100% frequency during the winter and spring months, but declined during the summer and fall. Sunfish prey were at their highest frequency in the winter and spring months (50-60%), and tapered off to 10-20% in the summer and fall. Carp in the diet showed a seasonal trend, highest in the spring at 30%, 10-20% during the summer and winter, and
Download or read book North American River Otter written by and published by . This book was released on 1995 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Feeding Habits of Yellowstone River Otters on Two Lakes by : William Ralph Wengeler
Download or read book Feeding Habits of Yellowstone River Otters on Two Lakes written by William Ralph Wengeler and published by . This book was released on 2008 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The introduction of exotic lake trout (Salvelinus namaycush) to Yellowstone Lake in Yellowstone National Park has contributed to a significant decline in the heretofore healthy population of Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri). There is great concern not only regarding the persistence of this genetically pure cutthroat subspecies, but also for the potential impacts their disappearance will have on the fish-eating predators of Yellowstone Lake and the surrounding community. Nearby Lewis Lake has no cutthroat trout, but is home to a well-established population of non-native lake trout, brown trout (Salmo trutta), and Utah chub (Gila atraria). We examined the contents of 179 river otter (Lontra canadensis) scats collected along the shores of Yellowstone (n=101) and Lewis Lakes (n=78) in Yellowstone National Park to compare otter dietary habits, especially with regard to the mustelid's utilization of native vs. non-native fish species. We also assessed diets using stable isotopes analysis ... on otters and represenatative prey from both lakes. In addition, we analyzed the isotopic signatures of fur taken from Yellowstone Lake otter specimens collected in the early part of the 20th century before exotic trout were introduced. Fecal analysis indicated that trout were consumed much more frequently by contemporary Yellowstone Lake otters (57% annually) than by otters occupying Lewis Lake (12% annually). The predominant fish found in Lewis Lake otter feces were minnows, presumably Utah chub. Stable isotopes analysis, however, identified longnose suckers (Catostomus catostomus) as the primary fish prey for Yellowstone Lake otters (56% contribution to otter diet), while indicating that otters there are generally preying on neither cutthroat trout nor introduced lake trout. Analysis of stable isotopes also indicated that contemporary Yellowstone Lake otters forage at a lower trophic level ... than their historic counterparts ... Isotopic data from Lewis Lake revealed that brown trout (60% contribution to otter diet) contribute more to otter diets there than local lake trout and Utah chub together (40% combined contribution). This study establishes the importance of alternative prey species to otters foraging on both lakes and supplements the growing body of research demonstrating that lake trout will not constitute a major food source for Yellowstone river otters."--Abstract.
Book Synopsis Wild Mammals of North America by : George A. Feldhamer
Download or read book Wild Mammals of North America written by George A. Feldhamer and published by JHU Press. This book was released on 2003-11-19 with total page 1250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents
Download or read book Audubon Wildlife Report written by and published by . This book was released on 1988 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Tennessee Academy of Science by : Tennessee Academy of Science
Download or read book Journal of the Tennessee Academy of Science written by Tennessee Academy of Science and published by . This book was released on 1996 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of the Food Habits of River Otters (Lutra Canadensis) by : S. Reuben Shanthikumar
Download or read book A Review of the Food Habits of River Otters (Lutra Canadensis) written by S. Reuben Shanthikumar and published by . This book was released on 1984 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis River Otter Food Habits in the Missouri Ozarks by : Nathan M. Roberts
Download or read book River Otter Food Habits in the Missouri Ozarks written by Nathan M. Roberts and published by . This book was released on 2003 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent river otter (Lontra canadensis) reintroductions in Missouri and across the Midwest have been very successful. As population numbers increase, so has concern about the potential impact of this predator on sport fish. Anglers in the Missouri Ozarks contend that otters are impacting centrarchid fish populations, especially rock bass (Ambloplites Spp.) and smallmouth bass (Micropterus dolomieu). My goal was to more accurately assess otter food habits in Ozark streams. First, I developed an identification model for certain Centrarchidae using scale morphology from lateral-line scales for use in otter-diet analysis. Using a linear discriminant analysis model, we were able to correctly classify known centrarchid scales to the genus level in 81.16% to 86.55% of cases. Otter scats were collected and examined from two Ozark streams, the Big Piney River and the Osage Fork River, during the winter and summer seasons of 2001 and 2002 (n = 4,750). During the winter, fish remains were identified in 88 and 84% of scats from the Big Piney River and Osage Fork River respectively. During the winter seasons, centrarchid remains were recovered in 72% of samples collected from the Big Piney River and 64% of samples collected from the Osage Fork River. However, during the summer, the frequency of occurrence of fish remains drop to approximately 15% for both rivers and the frequency of centrarchid remains dropped to>10%. Lepomis was the most frequently occurring Centrarchidae genus. Micropterus was the least frequent genus and had the lowest mean age of the three commonly occurring Centrarchidae genera in the systems under study.
Book Synopsis An Annotated Bibliography on the North American River Otter by : Renn Tumlison
Download or read book An Annotated Bibliography on the North American River Otter written by Renn Tumlison and published by . This book was released on 1985 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Selection, Food Habits, Movements, and Activity Patterns of Reintroduced River Otters (Lutra Canadensis) in Central Arizona by : Kerry Miles Christensen
Download or read book Habitat Selection, Food Habits, Movements, and Activity Patterns of Reintroduced River Otters (Lutra Canadensis) in Central Arizona written by Kerry Miles Christensen and published by . This book was released on 1984 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology of the River Otter (Lutra Canadensis) by : Richard E. Lizotte
Download or read book Biology of the River Otter (Lutra Canadensis) written by Richard E. Lizotte and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Food Habits of River Otters (Lontra Canadensis) in the Red River of the North Drainage of Eastern North Dakota by : Cory R. Stearns
Download or read book Food Habits of River Otters (Lontra Canadensis) in the Red River of the North Drainage of Eastern North Dakota written by Cory R. Stearns and published by . This book was released on 2008 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology of the River Otter (Lutra Canadensis) by : Richard Edward Lizotte (Jr.)
Download or read book Biology of the River Otter (Lutra Canadensis) written by Richard Edward Lizotte (Jr.) and published by . This book was released on 1994 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
