Ethology and behavioral ecology of sea otters and polar bears / Randall W. Davis, Anthony M. Pagano, editors.
Davis, Randall William, editor.; Pagano, Anthony M., editor.
2021
QL737.C25
Available Online

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Title Ethology and behavioral ecology of sea otters and polar bears / Randall W. Davis, Anthony M. Pagano, editors.
ISBN 9783030667962 (electronic bk.)
3030667960 (electronic bk.)
3030667952
9783030667955
DOI https://doi.org/10.1007/978-3-030-66796-2
Imprint Cham, Switzerland : Springer, 2021.
Language English
Description 1 online resource (xiv, 363 pages) : illustrations, maps
Other Standard Identifiers 10.1007/978-3-030-66796-2 doi
Call Number QL737.C25
Dewey Decimal Classification 599.769/5
Summary Sea otters and polar bears are carnivorous marine mammals that still resemble their terrestrial ancestors. Compared with Cetacea (whales and dolphins), Sirenia (dugongs and manatees), and Pinnipedia (seals, sea lions, and walrus), they are less adapted for an aquatic life and the most recently evolved among marine mammals. Sea otters are amphibious but seldom come ashore, and polar bears primarily occur on sea ice or along the shore. When at sea, both species spend most of their time swimming at the surface or making short, shallow dives when foraging or pursuing prey. Indeed, polar bears rarely pursue seals in water. Nevertheless, polar bears are powerful swimmers and will stalk seals from the water. As with many other large carnivores, they are solitary hunters. Although sea otters are gregarious and form aggregations at sea called rafts, they are primarily asocial. Except during mating, the principal interaction among sea otters occurs between a female and offspring during the six-month dependency period. In large carnivores (e.g., wolves and lions) that feed on ungulates, sociality and cooperation are favored because of the need to capture large prey and defend carcasses. Polar bears, which are the largest terrestrial carnivore, are solitary hunters of seals and are neither gregarious nor social. Males and females briefly associate during courtship and mating. During this time, males aggressively compete for females. At other times, males generally avoid each other except for aggregations of males that form while summering on land, and females with cubs avoid males, which are known for infanticide. As with sea otters, the interaction of polar bears outside of mating occurs between a female and her offspring during the 2-3 year dependency period. This interaction is critically important when altricial cubs are born in the winter den. This book provides new insight into the ethology and behavioral ecology of sea otters and polar bears. Each chapter reviews the discoveries of previous studies and integrates recent research using new techniques and technology. The authors also address historic and current anthropogenic challenges for their survival as climate change alters entire marine ecosystems.
Bibliography, etc. Note Includes bibliographical references and index.
Access Note Access limited to authorized users.
Digital File Characteristics text file
PDF
Source of Description Online resource; title from PDF title page (SpringerLink, viewed July 14, 2021).
Added Author Davis, Randall William, editor.
Pagano, Anthony M., editor.
Series Ethology and behavioral ecology of marine mammals, 2523-7500
Available in Other Form Print version: 9783030667955
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Introduction
Part I. Ethology and behavioral ecology of sea otters. Taxonomy and evolution of sea otters
Sea otter behavior : morphologic, physiologic, and sensory adaptations
Sea otter foraging behavior
Social structure of marine otters : inter and intraspecific variation
Reproductive behavior of male sea otters
Reproductive behavior of female sea otters and their pups
Sea otter behavior and its influence on Littoral community structure
Sea otter predator avoidance behavior
Sea otters and the maritime fur trade
Part II. Ethology and behavioral ecology of polar bears. Polar bear taxonomy and evolution
Polar bear behavior : morphologic and physiologic adaptations
Polar bear foraging behavior
Polar bear reproductive and denning behavior
Polar bear maternal care, neonatal development, and social behavior
Polar bear behavior in response to climate change
Human-polar bear interactions.

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