Download or read book The Gross Anatomy and Histology of the Male Reproductive Tract of the Arctic Ground Squirrel Spermophilus Undulatus with Observations on the Sexual Cycle written by Ormond Glenn Mitchell and published by . This book was released on 1957 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on the Reproductive Cycle of the Male Arctic Ground Squirrel Spermophilus Undulatus written by Arctic Aeromedical Laboratory (U.S.). and published by . This book was released on 1960 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on the Reproductive Cycle of the Male Arctic Ground Squirrel Spermophilus Undulatus written by and published by . This book was released on 1957 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of Dissertations for the Degree of Doctor of Philosophy written by University of Southern California and published by . This book was released on 1957 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of Dissertations written by University of Southern California and published by . This book was released on 1958 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of Dissertations for the Degree of Doctor of Philosophy with the Titles of Theses Accepted for Master s Degrees written by University of Southern California and published by . This book was released on 1958 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of Dissertations for the Degree of Doctor of Philosophy and the Degree of Doctor of Education with the Titles of Theses Accepted for Masters Degrees written by and published by . This book was released on 1957 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Report on AF 18 600 843 written by Arctic Aeromedical Laboratory (U.S.) and published by . This book was released on 1959* with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.
Download or read book Comprehensive Dissertation Index 1861 1972 Author index written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Social Behaviour in Mammals written by Trevor B. Poole and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mammalian sociobiology is a rapidly advancing field which has made enormous strides in the last ten years. The last major monograph on the subject (Ewer, 1968) was published sixteen years ago, and there is a need for this information to be examined in terms of modern sociobiological theory. My approach throughout is evolutionary and is therefore directed strongly towards research which throws light on the ways in which mammals behave in their natural environments. I have tried to cover as wide a range of mammalian species as possible, although, in some cases, the only data available were obtained from captive individuals. The coverage of this book is not a reflection of the volume of literature published on different species, as I have tried to avoid undue emphasis on the social behaviour of primates and laboratory rodents. I have made scrupulous efforts throughout to avoid an anthropomorphic approach to mammalian behaviour. Terms such as 'strategy', 'evaluation' or 'choice' do not therefore imply conscious planning, but are used neutrally in the way in which they would be applied to a chess-playing computer. In the case of mammals, the programmer was natural selection. While I am fully aware that human beings are mammals, any detailed consideration of human social behaviour lies outside the scope of this book. However, the book may provide a complementary text to those interested in that subject.
Download or read book Anatomischer Anzeiger written by and published by . This book was released on 1960 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Avian Energetics and Nutritional Ecology written by C. Carey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: A symposium held in 1973 chaired and organized by William R. Dawson was the first major attempt to summarize and synthesize the existing information in the then emerging field of avian energetics. The symposium featured papers by James R. King, William A. Calder III, Vance A. Tucker, and Robert E. Ricklefs and com mentaries by George A. Bartholomew, S. Charles Kendeigh, and Eugene P. Odum. The proceedings of the symposium, Avian Energetics (Paynter 1974), played a critical role in stimulating interest and research in the field of avian energetics. Some twenty-odd years later, we are making another attempt to summarize the information in the field of avian energetics. Some obvious differences exist be tween its predecessor and this volume. Numerous improvements in methodology, such as the use of doubly labeled water to estimate metabolism in free-living birds, now allow researchers to ask questions that could not be addressed previ ously. Second, consideration of nutrition is now inseparable from that of energet ics. This merger is necessary not only because food intake is the source of both en ergy and nutrients but also because one or more nutrients, rather than energy, can be limiting for a given species in a particular instance. Finally, the study of ener getics and nutritional ecology, particularly in birds and mammals, has grown so dramatically that a single volume can now only partially cover the range of possi ble topics and can catalogue only a sampling of all the studies on the subject.
Download or read book Biology and Management of the Western Gray Squirrel and Oregon White Oak Woodlands written by Loreen A. Ryan and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Red cockaded Woodpecker written by Ralph Costa and published by Surrey, B.C. : Hancock House. This book was released on 2004 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Populations of the red-cockaded woodpecker (Picoides borealis) have experienced massive declines since European colonization of North America. This is due to extensive habitat loss and alteration. Logging of old-growth pine forests and alteration of the fire regime throughout the historic range of the species were the primary causes of population decline. Listing of the red-cockaded woodpecker under the Endangered Species Act of 1973, as amended, and increased emphasis on management of non-game species have resulted in efforts to recover remnant populations of the red-cockaded woodpecker in many parts of its historic range. Due to extensive research and adaptive management initiatives much is now known about the elements required for both short- and long-term management of viable populations of red-cockaded woodpeckers. A short-term strategy is crucial because currently available habitat, in nearly all populations, is poor in 1 or more critical respects. Consequently, almost all populations require immediate attention in the short term, to insure suitable midstory and understory conditions, adequate availability of suitable cavities, and restoration of demographic viability through improvements in number and distribution of breeding groups. Management techniques including artificial cavities, cavity entrance restrictors, translocation of birds, prescribed fire, and mechanical and chemical control of woody vegetation are available to achieve these needs. In the long term, cost-effective management of red-cockaded woodpecker populations requires a timber management program and prescribed fire regime that will produce and maintain the stand structure characteristic of high quality nesting and foraging habitat, so that additional intensive management specific to the woodpeckers is no longer necessary. Timber management that achieves this goal and still allows substantial timber harvest is feasible. The implementation of a red-cockaded woodpecker management strategy, as outlined above, represents appropriate ecosystem management in the fire-maintained pine ecosystems of the southeastern United States and will ultimately benefit a great number of additional species of plants and animals adapted to this ecosystem.
Download or read book Patterns of Mammalian Reproduction written by Sydney Arthur Asdell and published by . This book was released on 1964 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miscellaneous Invertebrates written by Andreas Schmidt-Rhaesa and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-03 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of the Handbook of Zoology summarizes "small" groups of animals across the animal kingdom. Dicyemida and Orthonectida are enigmatic parasites, formerly united as "Mesozoa" and their position among the multicellular animals is still not known with certainty. Placozoa are small, flat marine animals which provide important information on metazoan evolution. Comb jellies (Ctenophora) are esthetically fascinating animals which cause considerable discussion about their phylogenetic position. Seisonida are closely related to rotifers and acanthocephalans. Cycliophora were discovered and described as one of the last higher taxa and surprise by their complex life cycle. Kamptozoa (= Entoprocta) are small sessile animals in the sea and sometimes also in freshwater. Arrow worms (Chaetognatha) play an important role as predators in the plankton, but they also include benthic forms. Pterobranchia and acorn worms (Enteropneusta) belong to the deuterostomia and are related to echinoderms. In particular enteropneusts play an important role in understanding deuterostome evolution. These chapters provide up to date reviews of these exiting groups with reference to the important literature and therefore serves as an important source of information.
