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Evolution Of Longevity In Animals
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Book Synopsis Evolution of Longevity in Animals by : Avril Woodhead
Download or read book Evolution of Longevity in Animals written by Avril Woodhead and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of intra-group correlations between LS and BW at representative intervals yields no consistent support for the hypothesis that lower BW is associated with longer LS. Indeed, among male Wistar rats and C57BL/6J and A/J mice followed since weaning on AL diets, the data suggested that relatively higher BW across the adult LS was generally associated with longer life. Even when the diet was restricted by EOD or RES regimens, this pattern of positive correlations between LS and BW persisted for the C57BL/6J and A/J strains when relative ages were analyzed. However, when BW at absolute ages were correlated with LS, support for the positive relationship between BW and LS was not as forthcoming. When AL groups were assessed beginning at later ages (> 10 months), the pattern of positive correlations was very evident for the Wistar rats--heavier rats tended to liver longer. This pattern was also evident among AL-fed C57BL/6J mice followed since 6 months, but was lost in the 10-month group in this strain. Among A/J mice on AL diets, the pattern became somewhat negative when followed at 6 and 10 months of age. However, among both C57BL/6J and A/J mice placed on EOD diets at 6 and 10 months of age, the pattern clearly tended toward the positive.
Book Synopsis Evolution of Longevity in Animals by : Avril Woodhead
Download or read book Evolution of Longevity in Animals written by Avril Woodhead and published by Springer. This book was released on 1987-11-01 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of intra-group correlations between LS and BW at representative intervals yields no consistent support for the hypothesis that lower BW is associated with longer LS. Indeed, among male Wistar rats and C57BL/6J and A/J mice followed since weaning on AL diets, the data suggested that relatively higher BW across the adult LS was generally associated with longer life. Even when the diet was restricted by EOD or RES regimens, this pattern of positive correlations between LS and BW persisted for the C57BL/6J and A/J strains when relative ages were analyzed. However, when BW at absolute ages were correlated with LS, support for the positive relationship between BW and LS was not as forthcoming. When AL groups were assessed beginning at later ages (> 10 months), the pattern of positive correlations was very evident for the Wistar rats--heavier rats tended to liver longer. This pattern was also evident among AL-fed C57BL/6J mice followed since 6 months, but was lost in the 10-month group in this strain. Among A/J mice on AL diets, the pattern became somewhat negative when followed at 6 and 10 months of age. However, among both C57BL/6J and A/J mice placed on EOD diets at 6 and 10 months of age, the pattern clearly tended toward the positive.
Book Synopsis Between Zeus and the Salmon by : Caleb E. Finch
Download or read book Between Zeus and the Salmon written by Caleb E. Finch and published by . This book was released on 1997-10-29 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demographers and public health specialists have been surprised by the rapid increases in life expectancy, especially at the oldest ages, that have occurred since the early 1960s. Some scientists are calling into question the idea of a fixed upper limit for the human life span. There is new evidence about the genetic bases for both humans and other species. There are also new theories and models of the role of mutations accumulating over the life span and the possible evolutionary advantages of survival after the reproductive years. This volume deals with such diverse topics as the role of the elderly in other species and among human societies past and present, the contribution of evolutionary theory to our understanding of human longevity and intergenerational transfers, mathematical models for survival, and the potential for collecting genetic material in household surveys. It will be particularly valuable for promoting communication between the social and life sciences.
Download or read book Longevity written by James R. Carey and published by Princeton University Press. This book was released on 2021-01-12 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite our deep interest in mortality, little is known about why some individuals live to middle age and others to extreme old age. Life span, mortality, and aging present some of the most profound mysteries in biology. In Longevity, James Carey draws on unprecedented data to develop a biological and demographic framework for identifying the key factors that govern aging, life span, and mortality in humans and other animals. Carey presents the results of a monumental, twelve-year, National Institute on Aging-funded research project on the determinants of longevity using data from the life tables of five million Mediterranean fruit flies, the most comprehensive set of life table studies ever on the mortality dynamics of a single species. He interprets the fruit fly data within the context of human aging and the aging process in general to identify the determinants of mortality. Three key themes emerge: the absence of species-specific life span limits, the context-specific nature of the mortality rate, and biodemographic linkages between longevity and reproduction. A powerful foundation for the emerging field of biodemography and a rich framework for considering the future of human life span, Longevity will be an indispensable resource for readers from a range of fields including population biology, demography, gerontology, ecology, evolutionary biology, and medical research.
Book Synopsis Longevity and Evolution by : Gustavo Barja
Download or read book Longevity and Evolution written by Gustavo Barja and published by . This book was released on 2010 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews research on presently known theories and mechanisms responsible for the rate of aging and maximum longevity of different animals including birds, mammals and humans (to explain "how" do we age and the velocity of the aging process). In addition, this book deals with the historical evolutionary explanations of aging and longevity ("why" do we age). The mechanisms discussed include mitochondria and oxygen free radicals, the presence of macromolecules constitutively highly resistant to deleterious modification in the tissues of long-lived animals, insulin/IGF-1 like signalling, telomere shortening, dietary restrictions, and other proposed molecular mechanisms.
Book Synopsis The Evolution of Senescence in the Tree of Life by : Richard P. Shefferson
Download or read book The Evolution of Senescence in the Tree of Life written by Richard P. Shefferson and published by . This book was released on 2017 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Top researchers in the field introduce interdisciplinary perspectives on senescence, presenting new insights and cutting-edge research.
Book Synopsis Methuselah's Zoo by : Steven N. Austad
Download or read book Methuselah's Zoo written by Steven N. Austad and published by MIT Press. This book was released on 2022-08-16 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stories of long-lived animal species—from thousand-year-old tubeworms to 400-year-old sharks—and what they might teach us about human health and longevity. Opossums in the wild don’t make it to the age of three; our pet cats can live for a decade and a half; cicadas live for seventeen years (spending most of them underground). Whales, however, can live for two centuries and tubeworms for several millennia. Meanwhile, human life expectancy tops out around the mid-eighties, with some outliers living past 100 or even 110. Is there anything humans can learn from the exceptional longevity of some animals in the wild? In Methusaleh’s Zoo, Steven Austad tells the stories of some extraordinary animals, considering why, for example, animal species that fly live longer than earthbound species and why animals found in the ocean live longest of all. Austad—the leading authority on longevity in animals—argues that the best way we will learn from these long-lived animals is by studying them in the wild. Accordingly, he proceeds habitat by habitat, examining animals that spend most of their lives in the air, comparing insects, birds, and bats; animals that live on, and under, the ground—from mole rats to elephants; and animals that live in the sea, including quahogs, carp, and dolphins. Humans have dramatically increased their lifespan with only a limited increase in healthspan; we’re more and more prone to diseases as we grow older. By contrast, these species have successfully avoided both environmental hazards and the depredations of aging. Can we be more like them?
Book Synopsis On Comparative Longevity in Man and the Lower Animals by : Sir Edwin Ray Lankester
Download or read book On Comparative Longevity in Man and the Lower Animals written by Sir Edwin Ray Lankester and published by . This book was released on 1870 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Laboratory Animals in Biomedical and Behavioral Research by : National Research Council
Download or read book Use of Laboratory Animals in Biomedical and Behavioral Research written by National Research Council and published by National Academies Press. This book was released on 1988-02-01 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific experiments using animals have contributed significantly to the improvement of human health. Animal experiments were crucial to the conquest of polio, for example, and they will undoubtedly be one of the keystones in AIDS research. However, some persons believe that the cost to the animals is often high. Authored by a committee of experts from various fields, this book discusses the benefits that have resulted from animal research, the scope of animal research today, the concerns of advocates of animal welfare, and the prospects for finding alternatives to animal use. The authors conclude with specific recommendations for more consistent government action.
Book Synopsis Comparative Biology of Aging by : Norman S. Wolf
Download or read book Comparative Biology of Aging written by Norman S. Wolf and published by Springer Science & Business Media. This book was released on 2010-01-08 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: determined by an inability to move in response to touch. C. elegans develop through four larval stages following hatching and prior to adulthood. Adult C. elegans are reproductive for about the rst week of adulthood followed by approximately two weeks of post-reproductive adulthood prior to death. Life span is most commonly measured in the laboratory by maintaining the worms on the surface of a nutrie- agar medium (Nematode Growth Medium, NGM) with E. coli OP50 as the bacterial food source (REF). Alternative culture conditions have been described in liquid media; however, these are not widely used for longevity studies. Longevity of the commonly used wild type C. elegans hermaphrodite (N2) varies ? from 16 to 23 days under standard laboratory conditions (20 C, NGM agar, E. coli OP50 food source). Life span can be increased by maintaining animals at lower ambient temperatures and shortened by raising the ambient temperature. Use of a killed bacterial food source, rather than live E. coli, increases lifespan by 2–4 days, and growth of adult animals in the absence of bacteria (axenic growth or bac- rial deprivation) increases median life span to 32–38 days [3, 23, 24]. Under both standard laboratory conditions and bacterial deprivation conditions, wild-derived C. elegans hermaphrodites exhibit longevity comparable to N2 animals [25].
Book Synopsis The Biology of Human Longevity by : Caleb E. Finch
Download or read book The Biology of Human Longevity written by Caleb E. Finch and published by Elsevier. This book was released on 2010-07-28 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by Caleb Finch, one of the leading scientists of our time, The Biology of Human Longevity: Inflammation, Nutrition, and Aging in the Evolution of Lifespans synthesizes several decades of top research on the topic of human aging and longevity particularly on the recent theories of inflammation and its effects on human health. The book expands a number of existing major theories, including the Barker theory of fetal origins of adult disease to consider the role of inflammation and Harmon's free radical theory of aging to include inflammatory damage. Future increases in lifespan are challenged by the obesity epidemic and spreading global infections which may reverse the gains made in lowering inflammatory exposure. This timely and topical book will be of interest to anyone studying aging from any scientific angle. - Author Caleb Finch is a highly influential and respected scientist, ranked in the top half of the 1% most cited scientists - Provides a novel synthesis of existing ideas about the biology of longevity and aging - Incorporates important research findings from several disciplines, including Gerontology, Genomics, Neuroscience, Immunology, Nutrition
Book Synopsis In the Light of Evolution by : National Academy of Sciences
Download or read book In the Light of Evolution written by National Academy of Sciences and published by . This book was released on 2007 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arthur M. Sackler Colloquia of the National Academy of Sciences address scientific topics of broad and current interest, cutting across the boundaries of traditional disciplines. Each year, four or five such colloquia are scheduled, typically two days in length and international in scope. Colloquia are organized by a member of the Academy, often with the assistance of an organizing committee, and feature presentations by leading scientists in the field and discussions with a hundred or more researchers with an interest in the topic. Colloquia presentations are recorded and posted on the National Academy of Sciences Sackler colloquia website and published on CD-ROM. These Colloquia are made possible by a generous gift from Mrs. Jill Sackler, in memory of her husband, Arthur M. Sackler.
Book Synopsis How Men Age by : Richard G. Bribiescas
Download or read book How Men Age written by Richard G. Bribiescas and published by Princeton University Press. This book was released on 2016-08-23 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: A groundbreaking book that examines all aspects of male aging through an evolutionary lens While the health of aging men has been a focus of biomedical research for years, evolutionary biology has not been part of the conversation—until now. How Men Age is the first book to explore how natural selection has shaped male aging, how evolutionary theory can inform our understanding of male health and well-being, and how older men may have contributed to the evolution of some of the very traits that make us human. In this informative and entertaining book, renowned biological anthropologist Richard Bribiescas looks at all aspects of male aging through an evolutionary lens. He describes how the challenges males faced in their evolutionary past influenced how they age today, and shows how this unique evolutionary history helps explain common aspects of male aging such as prostate disease, loss of muscle mass, changes in testosterone levels, increases in fat, erectile dysfunction, baldness, and shorter life spans than women. Bribiescas reveals how many of the physical and behavioral changes that we negatively associate with male aging may have actually facilitated the emergence of positive traits that have helped make humans so successful as a species, including parenting, long life spans, and high fertility. Popular science at its most compelling, How Men Age provides new perspectives on the aging process in men and how we became human, and also explores future challenges for human evolution—and the important role older men might play in them.
Book Synopsis The Evolution of Senescence in the Tree of Life by : Richard P. Shefferson
Download or read book The Evolution of Senescence in the Tree of Life written by Richard P. Shefferson and published by Cambridge University Press. This book was released on 2017-02-23 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: The existing theories on the evolution of senescence assume that senescence is inevitable in all organisms. However, recent studies have shown that this is not necessarily true. A better understanding of senescence and its underlying mechanisms could have far-reaching consequences for conservation and eco-evolutionary research. This book is the first to offer interdisciplinary perspectives on the evolution of senescence in many species, setting the stage for further developments. It brings together new insights from a wide range of scientific fields and cutting-edge research done on a multitude of different animals (including humans), plants and microbes, giving the reader a complete overview of recent developments and of the controversies currently surrounding the topic. Written by specialists from a variety of disciplines, this book is a valuable source of information for students and researchers interested in ageing and life history traits and populations.
Book Synopsis Eat Like the Animals by : David Raubenheimer
Download or read book Eat Like the Animals written by David Raubenheimer and published by Houghton Mifflin. This book was released on 2020 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: What drives the human appetite? Two leading scientists share their cutting-edge research to show how we can gain control over what, when, and how much we eat.
Book Synopsis The Biology of Senescence by : Alex Comfort
Download or read book The Biology of Senescence written by Alex Comfort and published by CreateSpace. This book was released on 2010-11-25 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Biology of Senescence
Book Synopsis The Long and the Short of It by : Jonathan Silvertown
Download or read book The Long and the Short of It written by Jonathan Silvertown and published by University of Chicago Press. This book was released on 2013-10-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Everything that lives will die. That’s the fundamental fact of life. But not everyone dies at the same age: people vary wildly in their patterns of aging and their life spans—and that variation is nothing compared to what’s found in other animal and plant species. A giant fungus found in Michigan has been alive since the Ice Age, while a dragonfly lives but four months, a mayfly half an hour. What accounts for these variations—and what can we learn from them that might help us understand, or better manage, our own aging? With The Long and the Short of It, biologist and writer Jonathan Silvertown offers readers a witty and fascinating tour through the scientific study of longevity and aging. Dividing his daunting subject by theme—death, life span, aging, heredity, evolution, and more—Silvertown draws on the latest scientific developments to paint a picture of what we know about how life span, senescence, and death vary within and across species. At every turn, he addresses fascinating questions that have far-reaching implications: What causes aging, and what determines the length of an individual life? What changes have caused the average human life span to increase so dramatically—fifteen minutes per hour—in the past two centuries? If evolution favors those who leave the most descendants, why haven’t we evolved to be immortal? The answers to these puzzles and more emerge from close examination of the whole natural history of life span and aging, from fruit flies, nematodes, redwoods, and much more. The Long and the Short of It pairs a perpetually fascinating topic with a wholly engaging writer, and the result is a supremely accessible book that will reward curious readers of all ages.
