Effects of wheel running on photoperiodic responses of Djungarian hamsters (Phodopus sungorus).

Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
Frank ScherbarthStephan Steinlechner

Abstract

Djungarian hamsters (Phodopus sungorus) were exposed to artificial short days either with access to a running wheel (RW) or without. Within 6 weeks RW hamsters considerably increased their body mass, whereas controls showed the typical body mass reduction. Estimation of paired testis weights indicated a decelerated testis regression in RW hamsters. Subsequent locking of RWs for 9 weeks led to a decline in body mass of RW animals in parallel to controls. Daily torpor was almost completely missing in hamsters with initially unlocked wheels. During the final phase when RWs were again unlocked (3 weeks), body mass of exercising hamsters increased again, while controls reached the nadir in body mass. In comparison to equiponderate long-day (LD) controls the relative liver weight of RW hamsters was significantly increased unlike the relative heart weight. However, the latter tended to be higher than in sedentary LD hamsters. A growth-stimulating effect of wheel running was proven by elongated femora in exercising short-day (SD) hamsters compared to SD controls and suggested by exercise-induced elevation of body mass in a further experiment under continuous LD conditions, indicating a growth-promoting effect of wheel running independe...Continue Reading

References

Jan 1, 1986·Comparative Biochemistry and Physiology. A, Comparative Physiology·W Puchalski, G Heldmaier
Jan 1, 1986·Physiology & Behavior·F P Gibbs, L J Petterborg
Apr 1, 1974·Physiology & Behavior·K T Borer
Aug 1, 1983·Biology of Reproduction·K T BorerL Gordon
Sep 1, 1982·Journal of Reproduction and Fertility·S M SimpsonD H Ellis
Jun 1, 1994·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·M C KerbeshianF H Bronson
Mar 9, 2000·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·M KlingensporG Heldmaier
Apr 26, 2003·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Jérôme S MenetPaul Pévet
Jun 12, 2004·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·David A FreemanJohn Dark
Jul 28, 2004·Physiology & Behavior·Rolf GattermannPeter Fritzsche
Jun 29, 2007·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Frank ScherbarthStephan Steinlechner

❮ Previous
Next ❯

Citations

Aug 3, 2010·Die Naturwissenschaften·Ines PetriStephan Steinlechner
Jul 20, 2010·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Frank Scherbarth, Stephan Steinlechner
Mar 5, 2010·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Amy WarnerFrancis J P Ebling
Nov 14, 2008·Chronobiology International·Frank Scherbarth, Stephan Steinlechner
Apr 21, 2012·Chronobiology International·Konrad SchöttnerDietmar Weinert
Feb 20, 2009·Physiology & Behavior·Brett J W Teubner, Timothy J Bartness
Jul 15, 2015·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Frank ScherbarthPerry Barrett
Sep 2, 2015·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·D MüllerD Weinert

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.