| wheel-running and rest activity pattern interaction in two octodontids (octodon degus, octodon bridgesi). | wheel-running and other non-photic stimuli influence the rest-activity pattern of diurnal and nocturnal mammals. a day to night inversion of phase preference of activity was described among octodon degus, when exposed to ad-libitum wheel running. we have studied the rest-activity pattern response in presence of ad libitum wheel-running in wild-captured male individuals from two species of genus octodon: o. degus (n = 9, crepuscular-diurnal) and o. bridgesi (n = 3, nocturnal). after two months of ... | 2005 | 16238108 |
| circadian chronotypes among wild-captured west andean octodontids. | rest activity pattern was studied in wild-captured males of octodon degus (n=9), octodon bridgesi (n=3), and spalacopus cyanus (n=6) (rodentia: octodontidae). ten-minute resolution actograms were constructed from data obtained by an automated acquisition system. after two months of habituation to a stable light-dark schedule, recordings were performed in isolation chambers under a 12: 12 light dark schedule. a free-running period (constant darkness) was recorded for o. bridgesi and s. cyanus. o. ... | 2006 | 16874396 |