Difference between revisions of "Timing of Feline Activity"
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==Timing of Activity== | ==Timing of Activity== | ||
| − | Cats are | + | Cats are commonly described as '''crepuscular''' (active primarily during twilight - dawn and dusk), and this pattern of activity has been confirmed in radio-telemetry studies<ref>Konecny, M. J. (1987) Home range and activity patterns of feral house cats in the Galapagos Islands. ''Oikos''. 50, 17-23.</ref>. The cat's crepuscular nature is also supported by the structure and function of the its [[Eye - Anatomy & Physiology|eye]], which has a number of adaptations that improve its function in low light conditions. However, cats have also previously been described as nocturnal and diurnal, based on findings from different studies. Under laboratory conditions in isolation from human contact, cats showed random patterns of activity in continuous light, and free-running circadian rhythms in constant darkness<ref>Randall, W., Johnson, R.F., Randall, S., Cunningham, J.T. (1985) Circadian rhythms in food intake and activity in domestic cats. ''Behav Neurosci''. 99(6), 1162-1175.
</ref>. Food intake was stimulated by simulated starlight and the presence of people. There was also a significant level of idiosyncratic variation in entrainment to different light-dark cycles, indicating that some individuals were more capable than others of adapting to different day length. |
==Relationship with Human Activity== | ==Relationship with Human Activity== | ||
Revision as of 10:48, 26 June 2014
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Timing of Activity
Cats are commonly described as crepuscular (active primarily during twilight - dawn and dusk), and this pattern of activity has been confirmed in radio-telemetry studies[1]. The cat's crepuscular nature is also supported by the structure and function of the its eye, which has a number of adaptations that improve its function in low light conditions. However, cats have also previously been described as nocturnal and diurnal, based on findings from different studies. Under laboratory conditions in isolation from human contact, cats showed random patterns of activity in continuous light, and free-running circadian rhythms in constant darkness[2]. Food intake was stimulated by simulated starlight and the presence of people. There was also a significant level of idiosyncratic variation in entrainment to different light-dark cycles, indicating that some individuals were more capable than others of adapting to different day length.
Relationship with Human Activity
The activity of domestic cats is also significantly influenced by human activity. In conditions that more closely resemble an average domestic environment, cats that were more closely involved with their owners showed greater levels of activity during daylight[3]. Given that man-made lighting, including light pollution, maintains the outdoor environment in towns and cities at a constant level of illumination that resembles the crepuscular period, many cats are exposed to a distorted photoperiod that does not favour proper entrainment and is likely to favour more idiosyncratic patterns of behaviour examples. For many generations domestic cats have been exposed to a different set of selection pressures related to photoperiodicity of behaviour and the availability of prey. In these altered environmental conditions cats which continued to follow a traditional feline pattern of proper entrainment, i.e. greater levels of activity during the twilight period would have a much lower survival value.
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References
- ↑ Konecny, M. J. (1987) Home range and activity patterns of feral house cats in the Galapagos Islands. Oikos. 50, 17-23.
- ↑ Randall, W., Johnson, R.F., Randall, S., Cunningham, J.T. (1985) Circadian rhythms in food intake and activity in domestic cats. Behav Neurosci. 99(6), 1162-1175.
- ↑ Piccione, G., Marafioti, S., Giannetto, C., Panzera, M., Fazio, F., (2013) Daily rhythm of total activity pattern in domestic cats (Felis silvestris catus) maintained in two different housing conditions. Journal of Veterinary Behavior. ePub online.
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