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...

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Autores principales:	OCAMPO-GARCÉS,ADRIÁN, HERNÁNDEZ,FELIPE, MENA,WILSON, PALACIOS,ADRIÁN G
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2005
Materias:	circadian rhythms masking Octodon degus Octodon bridgesi wheel-running
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200019
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spelling	oai:scielo:S0716-976020050002000192007-01-04Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)OCAMPO-GARCÉS,ADRIÁNHERNÁNDEZ,FELIPEMENA,WILSONPALACIOS,ADRIÁN G circadian rhythms masking Octodon degus Octodon bridgesi wheel-running 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 habituation to laboratory conditions, recordings were performed in isolation chambers under a 12:12 light-dark schedule with or without access to a running wheel. Actograms were constructed from data obtained by an automated acquisition system. O. bridgesi were also recorded under constant darkness, with or without access to wheel-running. Entrained to the light-dark schedule, a crepuscular pattern of activity was evident for O. degus, whereas O. bridgesi displayed a robust nocturnal chronotype. The activity of O. degus observed during the dark phase was enhanced when wheel-running was allowed. No significant change in phase preference was observed for O. bridgesi when wheel-running was allowed. A lengthening of endogenous period was observed in O. bridgesi after wheel-running exposure under constant darkness. Nocturnal and diurnal octodontids exhibit different masking responses to wheel-running.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.38 n.2-3 20052005-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200019en10.4067/S0716-97602005000200019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	circadian rhythms masking Octodon degus Octodon bridgesi wheel-running
spellingShingle	circadian rhythms masking Octodon degus Octodon bridgesi wheel-running OCAMPO-GARCÉS,ADRIÁN HERNÁNDEZ,FELIPE MENA,WILSON PALACIOS,ADRIÁN G Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)
description	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 habituation to laboratory conditions, recordings were performed in isolation chambers under a 12:12 light-dark schedule with or without access to a running wheel. Actograms were constructed from data obtained by an automated acquisition system. O. bridgesi were also recorded under constant darkness, with or without access to wheel-running. Entrained to the light-dark schedule, a crepuscular pattern of activity was evident for O. degus, whereas O. bridgesi displayed a robust nocturnal chronotype. The activity of O. degus observed during the dark phase was enhanced when wheel-running was allowed. No significant change in phase preference was observed for O. bridgesi when wheel-running was allowed. A lengthening of endogenous period was observed in O. bridgesi after wheel-running exposure under constant darkness. Nocturnal and diurnal octodontids exhibit different masking responses to wheel-running.
author	OCAMPO-GARCÉS,ADRIÁN HERNÁNDEZ,FELIPE MENA,WILSON PALACIOS,ADRIÁN G
author_facet	OCAMPO-GARCÉS,ADRIÁN HERNÁNDEZ,FELIPE MENA,WILSON PALACIOS,ADRIÁN G
author_sort	OCAMPO-GARCÉS,ADRIÁN
title	Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)
title_short	Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)
title_full	Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)
title_fullStr	Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)
title_full_unstemmed	Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)
title_sort	wheel-running and rest activity pattern interaction in two octodontids (octodon degus, octodon bridgesi)
publisher	Sociedad de Biología de Chile
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200019
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Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi)

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