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Pup Weight And Survival Of Northern Fur Seals Callorhinus Ursinus
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Book Synopsis Pup weight and survival of northern fur seals Callorhinus ursinus by : J.D. BAKER
Download or read book Pup weight and survival of northern fur seals Callorhinus ursinus written by J.D. BAKER and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conservation Plan for the Northern Fur Seal, Callorhinus Ursinus by :
Download or read book Conservation Plan for the Northern Fur Seal, Callorhinus Ursinus written by and published by . This book was released on 1993 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report of the Workshop on the Status of Northern Fur Seals on the Pribilof Islands, Alaska, Held November 14-16, 1983, Seattle, Washington by : Charles Winsor Fowler
Download or read book Report of the Workshop on the Status of Northern Fur Seals on the Pribilof Islands, Alaska, Held November 14-16, 1983, Seattle, Washington written by Charles Winsor Fowler and published by . This book was released on 1986 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Behavior and Ecology of the Northern Fur Seal by : Roger L. Gentry
Download or read book Behavior and Ecology of the Northern Fur Seal written by Roger L. Gentry and published by Princeton University Press. This book was released on 2014-07-14 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the behavior and ecology of the northern fur seal, this book is a model long-term study of marine mammals, one that tests theory through both observation of undisturbed behavior and manipulative experiments on individuals. Here Roger Gentry draws on nearly two decades of research on three different islands to show how behavior among these seals changes with population size, sex ratio, and environment, to explain the behavior of the population beginning with individuals, and to generalize the results to other members of the eared seal family. In so doing, he offers one of the most comprehensive studies of its kind on any marine mammal species to date. Gentry shows that the species is driven by very different behavioral traits than have been assumed for it in the past. His book analyzes behavior on scales of hours to lifetimes, investigates the mating system, considers processes that underlie the mating system (site fidelity, behavioral estrus, and the development of territoriality), and addresses specific aspects of maternal strategy (female attendance behavior, pup growth, seasonal influences, and the effects of continental shelf width). Gentry contributes to knowledge about marine mammals by providing a very specific basis for interspecies comparisons, and he suggests a link between population trend and environmental regime shifts. He also guides the debate over seal mating systems from an interpretive to an empirical or experimental basis. Originally published in 1997. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Book Synopsis Body weight and growth of juvenile male northern fur seals, Callorhinus ursinus by : J.D. BAKER
Download or read book Body weight and growth of juvenile male northern fur seals, Callorhinus ursinus written by J.D. BAKER and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Steller Sea Lion and Northern Fur Seal Research by :
Download or read book Steller Sea Lion and Northern Fur Seal Research written by and published by . This book was released on 2007 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energetics and Development of Northern Fur Seal, Callorhinus Ursinus Pups by : Mary Jill Donohue
Download or read book Energetics and Development of Northern Fur Seal, Callorhinus Ursinus Pups written by Mary Jill Donohue and published by . This book was released on 1998 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Setting the Annual Subsistence Harvest of Northern Fur Seals on the Pribilof Islands by :
Download or read book Setting the Annual Subsistence Harvest of Northern Fur Seals on the Pribilof Islands written by and published by . This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Opportunistic Feeding of the Northern Fur Seal, Callorhinus Ursinus, in the Eastern North Pacific Ocean and Eastern Bering Sea by : Hiroshi Kajimura
Download or read book Opportunistic Feeding of the Northern Fur Seal, Callorhinus Ursinus, in the Eastern North Pacific Ocean and Eastern Bering Sea written by Hiroshi Kajimura and published by . This book was released on 1984 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maternal Effects in Mammals by : Dario Maestripieri
Download or read book Maternal Effects in Mammals written by Dario Maestripieri and published by University of Chicago Press. This book was released on 2009-08-01 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary maternal effects occur whenever a mother’s phenotypic traits directly affect her offspring’s phenotype, independent of the offspring’s genotype. Some of the phenotypic traits that result in maternal effects have a genetic basis, whereas others are environmentally determined. For example, the size of a litter produced by a mammalian mother—a trait with a strong genetic basis—can affect the growth rate of her offspring, while a mother’s dominance rank—an environmentally determined trait—can affect the dominance rank of her offspring. The first volume published on the subject in more than a decade, Maternal Effects in Mammals reflects advances in genomic, ecological, and behavioral research, as well new understandings of the evolutionary interplay between mothers and their offspring. Dario Maestripieri and Jill M. Mateo bring together a learned group of contributors to synthesize the vast literature on a range of species, highlight evolutionary processes that were previously overlooked, and propose new avenues of research. Maternal Effects in Mammals will serve as the most comprehensive compendium on and stimulus for interdisciplinary treatments of mammalian maternal effects.
Book Synopsis Early Migratory Behavior of Northern Fur Seal (Callorhinus Ursinus) Pups from Bering Island, Russia by : Olivia Astillero Lee
Download or read book Early Migratory Behavior of Northern Fur Seal (Callorhinus Ursinus) Pups from Bering Island, Russia written by Olivia Astillero Lee and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: I examined the population trends of northern fur seals (Callorhinus ursinus) using an age-specific metapopulation model that allowed migration between rookeries. Mortality and birth rates were modified to simulate future population trends. I also examined the early migratory behavior and habitat associations of pups from Bering Island (BI), Russia. I instrumented 35 pups with Mk10-AL satellite tags and stomach temperature telemeters which provided diving, foraging and location data. I hypothesized that some aspects of pup behavior from the stable BI population differed from the behavior of pups from the unstable Pribilof Islands (PI). The population model revealed that emigration did not contribute significantly to the current PI population decline. However, large source populations contributed significantly to population growth in newly colonized rookeries. A stabilization of the PI population was predicted with a 10 to 20% reduction in both juvenile and adult female mortality rates. The diving behavior of pups showed a general progression towards longer and deeper dives as pups aged, particularly between 1600 - 0400 (local time), that was similar to PI pup behavior. However, unlike pups from the PI, I found three main diving strategies among BI pups: 1) shallow daytime divers (mean depth = 3.56 m), 2) deep daytime divers (mean depth = 6.36 m) and 3) mixed divers (mean depth = 4.81 m). The foraging behavior of pups showed that most successful ingestion events occurred between 1600 - 0400, with successful ingestion events lasting 25.36 ± 27.37 min. There was no significant difference among the three strategies in the depth of successful foraging dives. I also examined the foraging search strategies in adult females and pups. Both pups and adults conducted Levy walks, although pups foraged in smaller patches (1 km scales). Using a logistic model to determine habitat associations, I found that pup locations were positively correlated with increasing chlorophyll a concentrations, distances from shore, and sea surface temperatures, and were negatively correlated with depth. There was no significant relationship between all pup locations and the regions (peripheries or centers) or types (cyclonic or anti-cyclonic) of eddies, but ingestion event locations were related to mesoscale eddy peripheries.
Download or read book Fur Seal Investigations written by and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammals written by Nick Gales and published by CSIRO PUBLISHING. This book was released on 2003 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brings together contributions from 68 leading scientists from 12 countries to provide an up-to-date review on the way we manage our interactions with whales, dolphins, seals and dugongs.
Download or read book Fishery Bulletin written by and published by . This book was released on 1995 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Population Study of the Alaska Fur-seal Herd by : Karl W. Kenyon
Download or read book A Population Study of the Alaska Fur-seal Herd written by Karl W. Kenyon and published by . This book was released on 1954 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction. Sources and methods ; Counts and measurements of seals ; Age determination -- Components of the herd. Bulls ; Bachelors ; Pups ; Cows ; Yearlings -- Present size of the herd. Life habits ; Estimate of the size of the herd from the trend of the commercial harvest ; Estimate of the size of the herd from the trend of the harem bull count -- Appendix A. Effect of sealing on fluctuations in herd size 1786-1951 -- Appendix B. Fecundity of males -- Appendix C. Size of the average harem -- Appendix D. Age criteria for bachelor fur seals -- Appendix E. Escapement of bachelors from the commercial kill -- Appendix F. Calculations for the size of the pup class in 1947 from tag recoveries -- Appendix G. Serial photography on the Pribilofs.
Book Synopsis Tooth weights of juvenile male northern fur seals, Callorhinus ursinus by : J.D. BAKER
Download or read book Tooth weights of juvenile male northern fur seals, Callorhinus ursinus written by J.D. BAKER and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth Hormone Concentrations in Northern Fur Seal (Callorhinus Ursinus) Pups and Adults by : Vivian Rosa Casanas
Download or read book Growth Hormone Concentrations in Northern Fur Seal (Callorhinus Ursinus) Pups and Adults written by Vivian Rosa Casanas and published by . This book was released on 1996 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: