Otters Ecology, Behaviour and Conservation (Oxford Biology by Hans Kruuk

By Hans Kruuk

Otters are hugely charismatic and well known animals of very significant obstacle to conservationists world wide. Written through the pre-eminent authority within the box, this publication builds at the acceptance of the author's landmark monograph of the ecu otter, Wild Otters (OUP, 1995). in addition, its broader scope to incorporate all species of otter in North the United States in addition to Europe and in other places results in a deeper synthesis that significantly expands the book's total relevance and capability readership. aimed toward naturalists, scientists and conservationists, its own kind and generously illustrated textual content will attract amateurs and execs alike. It emphasizes fresh examine and conservation administration tasks for all thirteen species of otter around the globe, comprises contemporary molecular study on taxonomy and inhabitants genetics, and discusses the broader implications of otter experiences for ecology and conservation biology. in addition to mesmerizing direct observations of the animals, there's tips approximately how and the place to observe and research them. From otters within the British and American lakes and rivers, to sea otters within the Pacific Ocean, significant otters within the Amazon and different species in Africa and Asia, this e-book presents an interesting method of their interesting lifestyles, to the technology had to comprehend it, and to the very actual threats to their survival.

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17). It shares many of these areas with the short-clawed Four species, of which the Eurasian otter occurs throughout, and has been described above under Europe. Hairy-nosed otter, Lutra sumatrana (Fig. 15) This is one of the least known otters, very nocturnal and living in difficult areas in a rather small part of Asia. It is remarkably similar to the Eurasian otter, its hair-covered rhinarium (Fig. 16) being one of the main differences, but they are equal in size. The overall coloration is also like that of the Eurasian otter, except that the throat as well as the upper lips are usually white, with a sharp delineation between the dark upper side and the light underneath, especially on the throat and neck.

General references for Cape clawless otters Arden-Clarke 1986; Rowe-Rowe 1977; Skinner and Smithers 1990; Somers and Nel 2003, 2004. Congo clawless otter, or swamp otter, Aonyx congicus (Fig. 24) A single large otter is foraging in one of the damp clearings in the Congolese rainforests. It walks a few steps, then pushes one of its front feet deep into the soft mud. It is feeling around, its gaze averted and, after a quarter of a minute, it pulls out a most unotter-like prey: a very large earthworm.

2001). This will be evident in the following chapters. Taking a wider, more academic, view, there are broader biological principles underlying many of the questions that are asked here. It may be the 32 Otters: ecology, behaviour and conservation relationship between territoriality and resource utilization, the regression between animal numbers and availability of their food, the genetic variation and viability of populations, the biological function of scent marking, the role of parental behaviour in the development of hunting skills, the energetics of hunting, the roles of disease and pollution as a cause of mortality, and many more.

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