The works, views and ideas of Heini Hediger (1908-1992), one of the most distinguished and influential zoologist of the 20th century, had and still have an enormous impact on contemporary understanding of animal behaviour. His views on territorial, social, etc. aspects of animal behaviour are based on semiotic concepts derived from Umwelt-theory (J. v. Uexküll) and combined with ideas from modern ethology. Hediger's special attention was devoted to the area of animal-man communications; he treated these problematic phenomena as a system (...) of semiosis-processes, in a mainly holistic way. Hediger's approach inspires the author to propose a notion "the need for impression" to be used in zoosemiotic analyses. (shrink)

The works, views and ideas of Heini Hediger (1908-1992), one of the most distinguished and influential zoologist of the 20th century, had and still have an enormous impact on contemporary understanding of animal behaviour. His views on territorial, social, etc. aspects of animal behaviour are based on semiotic concepts derived from Umwelt-theory (J. v. Uexküll) and combined with ideas from modern ethology. Hediger's special attention was devoted to the area of animal-man communications; he treated these problematic phenomena as a system (...) of semiosis-processes, in a mainly holistic way. Hediger's approach inspires the author to propose a notion "the need for impression" to be used in zoosemiotic analyses. (shrink)

The main feature of the signs of health in the animal habitus and behaviour can be characterised as the readiness to adequately (for a species) serve the need for impression (in animalistic elements of the Umwelt). The signs of disease, however multifarious and diverse, generally display certain lack of Umwelt-oriented attentiveness, alertness. Attention of deeply afflicted animals is strongly Innenwelt-oriented; and in some species a set of such signs, suggesting sickness or mortal disease is used as a set of traits (...) in the mimicry of dying. The semiotic factors in health-disease relationships are apparently connected with intuition — like responses creating in the semiosphere a structure of Umwelt-Innenwelt polarized tensions, important in ecological and evolutional developments. (shrink)