Translator Disclaimer
1 December 2013 Locomotor activity patterns of captive East African root rats, Tachyoryctes splendens (Rodentia: Spalacidae), from Tanzania, East Africa
Author Affiliations +
Abstract

The East African root rat (Tachyoryctes splendens) is a solitary fossorial rodent occurring in the eastern parts of central Africa. Unlike bathyergid mole-rats, T. splendens occasionally goes aboveground to feed and consequently it is periodically exposed to the natural light–dark cycle. The locomotor activity of T. splendens was assessed under various light regimes. T. splendens entrains its activity to light cycles and displays distinct nocturnal activity with the total percentage of activity during the dark phase at 87.78% ± SD 11.01%. In constant darkness, T. splendens shows free-running rhythms of slightly shorter than 24 h (2340 ± SD 013 h), while still exhibiting most of its activity during subjective night. Upon inversion of the light cycle, time of reentrainment was exceptionally long. Nocturnal activity time (α) was shortened in response to a shorter night length from 1129 to 0746 h; however, when the dark phase was lengthened, α remained roughly similar to that of the 12L:12D photoperiod at 1124 h. A difference in circadian activity is apparent from the laboratory and field findings, thus in a natural situation, other environmental factors may influence activity patterns.

Jestina Venance Katandukila, Nigel Charles Bennett, Christian Timothy Chimimba, Christoper Guy Faulkes, and Maria Kathleen Oosthuizen "Locomotor activity patterns of captive East African root rats, Tachyoryctes splendens (Rodentia: Spalacidae), from Tanzania, East Africa," Journal of Mammalogy 94(6), 1393-1400, (1 December 2013). https://doi.org/10.1644/13-MAMM-A-095.1
Received: 6 April 2013; Accepted: 1 June 2013; Published: 1 December 2013
JOURNAL ARTICLE
8 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top