Нелинейные феномены, определяющие высокую структурную изменчивость скулений домашней собаки Canis familiaris (Carnivora, Canidae)статья

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[1] Володин И. А., Володина Е. В., Филатова О. А. Нелинейные феномены, определяющие высокую структурную изменчивость скулений домашней собаки canis familiaris (carnivora, canidae) // Бюллетень Московского общества испытателей природы. Отдел биологический. — 2007. — Т. 112, № 4. — С. 11–17. We analyzed quantitatively the occurrence of nonlinear vocal phenomena in whines of 9 domestics dogs of different breeds. The call recordings were made with participation of the dogs' owners, designing a frustration-evoking situation in their dogs. The dogs produced whines in response to impossibility to realize a desired action. The whines could consist two fundamental frequencies - the low (f0) and the high (g0), occuring both singly as separate vocalizations and together within a call. The low fundamental frequency, varying from 0,4 to 1,4 kHz among individuals, could be free of nonlinear phenomena or consisted deterministic chaos, subharmonics or frequency jumps within the low fundamental frequency. The high fundamental frequency, varying from 3,1 to 11 kHz among individuals, could also be free of nonlinear phenomena, or consisted sidebands. When both f0 and g0 occurred within a call simultaneously, it resulted in biphona-tion, and when they occurred one after another - in frequency jump from g0 to f0. We showed, that nonlinear phenomena did occur significantly more often within the f0 than within the g0, and significantly more rarely in calls consisting both f0 and g0, than in calls with any of these frequencies produced singly. The occurrence of different nonlinear phenomena showed high inter-individual variability. We discuss mechanisms for production of each of the components in the domestic dog. We have proposed, that nonlinear phenomena may function as a mechanism, supporting the high unpredictable variability of a call structure, that can be used by domestic dogs in order to attract attention of owners in a situation when a dog can't cope with a frustration-evoking problem.

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