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Revista chilena de historia natural

Print version ISSN 0716-078X

Abstract

LUNA, FACUNDO; ANTINUCHI, C. DANIEL  and  BUSCH, CRISTINA. Rhythms of locomotor activity and burrow use under seminatural conditions in Ctenomys talarum (Rodentia, Octodontidae). Rev. chil. hist. nat. [online]. 2000, vol.73, n.1, pp.39-46. ISSN 0716-078X.  http://dx.doi.org/10.4067/S0716-078X2000000100005.

Ctenomys are subterranean rodents that perform most of their daily activities in dark, thermally stable burrow systems. In this paper the dependence of Ctenomys talarum (Thomas, 1898) activity rhythms on either photoperiod and ambient temperature was analyzed, as well as permanency and preference for different sectors of a burrow system. 25 % of the individuals showed rhythmicity in their activities. Thus, luminous stimuli and ambient temperature did not affect activity pattern in this species. Furthermore, individuals of C. talarum did not show any generalized pattern of preference and permanency on defined sectors of the artificial burrow system

Keywords : Ctenomys talarum; rhythms; zeitgeber; burrow use; tuco-tuco.

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