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Author Krebs, J.R.; Clayton, N.S.; Hampton, R.R.; Shettleworth, S.J.
Title Effects of photoperiod on food-storing and the hippocampus in birds Type Journal Article
Year 1995 Publication Neuroreport Abbreviated Journal Neuroreport
Volume 6 Issue 12 Pages 1701-1704
Keywords Animals; Birds; Eating/*physiology; Female; Hippocampus/*physiology; Light; Male; *Photoperiod; Seasons; Telencephalon/physiology; Time Factors
Abstract Birds that store food have a relatively large hippocampus compared to non-storing species. The hippocampus shows seasonal differences in neurogenesis and volume in black-capped chikadees (Parus atricapillus) taken from the wild at different times of year. We compared hippocampal volumes in black-capped chickadees captured at the same time but differing in food-storing behaviour because of manipulations of photoperiod in the laboratory. Differences in food-storing behaviour were not accompanied by differences in the volume of the hippocampus. Hippocampal volumes also did not differ between two groups of a non-food-storing control species, house sparrows (Passer domesticus), exposed to the same conditions as the chickadees.
Address Edward Grey Institute of Field Ornithology, Department of Zoology, Oxford, UK
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ISSN 0959-4965 ISBN Medium
Area Expedition Conference
Notes PMID:8527745 Approved no
Call Number (up) refbase @ user @ Serial 378
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Author Shettleworth, S.J.
Title Stimulus relevance in the control of drinking and conditioned fear responses in domestic chicks (Gallus gallus) Type Journal Article
Year 1972 Publication Journal of comparative and physiological psychology Abbreviated Journal J Comp Physiol Psychol
Volume 80 Issue 2 Pages 175-198
Keywords Acoustic Stimulation; Animals; Auditory Perception; Chickens; *Conditioning (Psychology); Conditioning, Classical; Discrimination Learning; *Drinking Behavior; Electroshock; *Fear; *Light; Motor Activity; Photic Stimulation; Punishment; Quinine; *Sound; Taste; Visual Perception
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ISSN 0021-9940 ISBN Medium
Area Expedition Conference
Notes PMID:5047826 Approved no
Call Number (up) refbase @ user @ Serial 390
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Author Mrosovsky, N.; Shettleworth, S.J.
Title Wavelength preferences and brightness cues in the water finding behaviour of sea turtles Type Journal Article
Year 1968 Publication Behaviour Abbreviated Journal Behaviour
Volume 32 Issue 4 Pages 211-257
Keywords Animals; *Behavior, Animal; *Color Perception; Cues; Light; *Turtles; Water
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ISSN 0005-7959 ISBN Medium
Area Expedition Conference
Notes PMID:5717260 Approved no
Call Number (up) refbase @ user @ Serial 391
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Author Dyer, F.C.
Title Animal behaviour: when it pays to waggle Type
Year 2002 Publication Nature Abbreviated Journal Nature
Volume 419 Issue 6910 Pages 885-886
Keywords *Animal Communication; Animals; Bees/*physiology; California; Dancing/physiology; Environment; Evolution; Female; Flowers/chemistry; *Food; Gravitation; Lighting; Motor Activity/*physiology; Odors; Seasons; Sunlight
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ISSN 0028-0836 ISBN Medium
Area Expedition Conference
Notes PMID:12410290 Approved no
Call Number (up) refbase @ user @ Serial 769
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Author Madigan, J.E.; Kortz, G.; Murphy, C.; Rodger, L.
Title Photic headshaking in the horse: 7 cases Type Journal Article
Year 1995 Publication Equine Veterinary Journal Abbreviated Journal Equine Vet J
Volume 27 Issue 4 Pages 306-311
Keywords Animals; Anti-Allergic Agents/therapeutic use; *Behavior, Animal; Cyproheptadine/therapeutic use; Female; *Head; Horse Diseases/drug therapy/*etiology; Horses; Light/*adverse effects; Male; Movement Disorders/drug therapy/etiology/*veterinary
Abstract Seven horses with headshaking are described. No physical abnormalities were detected in any of the cases. Six of these horses had onset of clinical signs in the spring. The role of light was assessed by application of a blindfold or dark grey lens to the eyes, covering the eyes with a face mask and observing the horse in total darkness outdoors. Cessation of headshaking was observed with blindfolding (5/5 horses), night darkness outdoors (4/4 horses) and use of grey lenses (2/3 horses). Outdoor behaviour suggested efforts to avoid light in 4/4 cases. The photic sneeze in man is suggested as a putative mechanism for equine headshaking. Five of 7 horses had improvement with cyproheptadine treatment (0.3 mg/kg bwt b.i.d.). Headshaking developed within 2 calendar weeks of the same date for 3 consecutive years in one horse. Neuropharmacological alterations associated with photoperiod mechanisms leading to optic trigeminal summation are suggested as possible reasons for spring onset of headshaking.
Address Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis 95616-8737, USA
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ISSN 0425-1644 ISBN Medium
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Notes PMID:8536668 Approved no
Call Number (up) refbase @ user @ Serial 1940
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