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PHOQUES --- PHOCIDAE --- ANTARCTIQUE --- ANTARCTICA
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Phocidae, Fossil. --- Pinnipedia, Fossil --- Seals (Animals), Fossil --- Foques --- Etologia
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Elephant seals, weighing up to 2000 kilograms, are not only the largest seals but among the most impressive of all marine mammals. Brought to the brink of extinction by nineteenth-century hunters, the northern species has achieved a recovery that is unmatched by any other marine vertebrate. Elephant seals are capable of tolerating remarkable physiological extremes of nutrition, temperature, and pressure. They spend more time underwater than most whales and dive deeper and longer than any other marine mammal. Lactating females and the largest breeding males during the mating season can lose up to forty percent of their body weight through prolonged fasting. For these and other reasons, the elephant seal has been the subject of intensive study in the northern and the southern hemispheres. Elephant Seals, the first book-length discussion of the species, gathers together the research findings of scientists working along the North American coast from California to Alaska and in the circumpolar waters of the Antarctic. It documents for the first time the worldwide status of elephant seals, noting both the remarkable resurgence of the northern species and the troubling decline of certain populations in the south, which some attribute to human factors such as fishing and global warming. Among the studies discussed by the authors are those involving cutting-edge research on the seals' diving patterns, biannual migration, and foraging locations, carried out with the use of microcomputer diving instruments attached to free-ranging seals. Others include research on the life-history tactics critical to a population's success - juvenile survivorship, female and male reproductive strategies, and prey consumed. The book concludes with an analysis of the remarkable physiological mechanisms that make possible the elephant seals' long breath-holds during diving and sleep, that set limits on foraging, and that regulate their hormones and fuel metabolism while fasting. An important and timely volume, Elephant Seals offers not only a worldwide status report on these impressive mammals but also the most comprehensive and up-to-date account of their behavioral biology. For the information it contains, for the methodological innovations it reports, and for its relevance to the debate about the human causes of species extinction, this book is essential reading for all marine mammalogists, behavioral ecologists, and managers of marine mammals.
Elephant seals. --- Elephant seals --- Zoology --- Health & Biological Sciences --- Vertebrates --- Macrorhinus --- Mirounga --- Morunga --- Rhinophoca --- Sea elephants --- Phocidae
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This book is focused on the marine mammalian groups the Otariidae and the Odobenidae, otherwise known as fur seals, sea lions and the walrus. In 30 chapters, more than 60 authors from 30 institutions and 13 nationalities, discuss a broad suite of topics from maternal care and mating behavior, through play, cognition and personality, to adaptation to life in the Anthropocene. The authors explore the behaviors that have allowed these semi-aquatic mammals to thrive in the marine realm. Many populations have recovered following historical decimation, with interesting evolutionary consequences which are explored. Detailed, selected, individual species descriptions are also provided, showcasing the behavioral diversity of this engaging, adaptive and highly successful group of marine mammals.
Conservation biology. --- Ecology . --- Zoology. --- Biodiversity. --- Behavior genetics. --- Conservation Biology/Ecology. --- Ecology. --- Behavioral Genetics. --- Behavior genetic analysis --- Behavioral genetics --- Human behavior genetics --- Psychogenetics --- Genetics --- Psychology --- Biological diversification --- Biological diversity --- Biotic diversity --- Diversification, Biological --- Diversity, Biological --- Biology --- Biocomplexity --- Ecological heterogeneity --- Numbers of species --- Natural history --- Animals --- Balance of nature --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Ecology --- Nature conservation --- Eared seals. --- Eared seals --- Odobenidae. --- Behavior. --- Pinnipedia --- Otariidae --- Seals (Animals) --- Foques --- Lleons marins --- Etologia --- Otariinae --- Phocidae --- Pinnípedes --- Biologia del comportament --- Comportament animal --- Conducta animal --- Conducta dels animals --- Costums animals --- Costums dels animals --- Ecoetologia --- Hàbits i costums dels animals --- Etologia animal --- Hàbits dels animals --- Hàbits i conducta dels animals --- Psicologia animal --- Zoologia --- Agressivitat en els animals --- Animals nocturns --- Aprenentatge en els animals --- Comportament social en els animals --- Comunicació animal --- Conducta parental en els animals --- Conducta sexual dels animals --- Emocions en els animals --- Empolainament --- Habitacles dels animals --- Hivernació --- Instint --- Jerarquia social en els animals --- Joc en els animals --- Mecanismes de defensa en els animals --- Migració d'animals --- Nidificació --- Reconciliació en els animals --- Territorialitat (Zoologia) --- Ús dels utensilis en els animals --- Etòlegs --- Psicologia comparada
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