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Items: 49

1.

Waiting for the Sun: the circannual programme of reindeer is delayed by the recurrence of rhythmical melatonin secretion after the arctic night.

Hazlerigg D, Blix AS, Stokkan KA.

J Exp Biol. 2017 Nov 1;220(Pt 21):3869-3872. doi: 10.1242/jeb.163741. Epub 2017 Sep 1.

2.

Behavioral Timing without Clockwork: Photoperiod-Dependent Trade-Off between Predation Hazard and Energy Balance in an Arctic Ungulate.

Tyler NJ, Gregorini P, Forchhammer MC, Stokkan KA, van Oort BE, Hazlerigg DG.

J Biol Rhythms. 2016 Oct;31(5):522-33. doi: 10.1177/0748730416662778.

PMID:
27634928
3.

The eyes of the deep diving hooded seal (Cystophora cristata) enhance sensitivity to ultraviolet light.

Hogg C, Neveu M, Folkow L, Stokkan KA, Hoh Kam J, Douglas RH, Jeffery G.

Biol Open. 2015 May 11;4(7):812-8. doi: 10.1242/bio.011304.

4.

Ultraviolet vision and avoidance of power lines in birds and mammals.

Tyler N, Stokkan KA, Hogg C, Nellemann C, Vistnes AI, Jeffery G.

Conserv Biol. 2014 Jun;28(3):630-1. doi: 10.1111/cobi.12262. Epub 2014 Mar 12. No abstract available.

5.

Shifting mirrors: adaptive changes in retinal reflections to winter darkness in Arctic reindeer.

Stokkan KA, Folkow L, Dukes J, Neveu M, Hogg C, Siefken S, Dakin SC, Jeffery G.

Proc Biol Sci. 2013 Oct 30;280(1773):20132451. doi: 10.1098/rspb.2013.2451. Print 2013 Dec 22.

6.

The metabolic cost of incline locomotion in the Svalbard rock ptarmigan (Lagopus muta hyperborea): the effects of incline grade and seasonal fluctuations in body mass.

Lees J, Folkow L, Stokkan KA, Codd J.

J Exp Biol. 2013 Apr 15;216(Pt 8):1355-63. doi: 10.1242/jeb.078709. Epub 2012 Dec 21.

7.

Understanding sex differences in the cost of terrestrial locomotion.

Lees JJ, Nudds RL, Folkow LP, Stokkan KA, Codd JR.

Proc Biol Sci. 2012 Feb 22;279(1729):826-32. doi: 10.1098/rspb.2011.1334. Epub 2011 Aug 17.

8.

Arctic reindeer extend their visual range into the ultraviolet.

Hogg C, Neveu M, Stokkan KA, Folkow L, Cottrill P, Douglas R, Hunt DM, Jeffery G.

J Exp Biol. 2011 Jun 15;214(Pt 12):2014-9. doi: 10.1242/jeb.053553.

9.

Evidence for energy savings from aerial running in the Svalbard rock ptarmigan (Lagopus muta hyperborea).

Nudds RL, Folkow LP, Lees JJ, Tickle PG, Stokkan KA, Codd JR.

Proc Biol Sci. 2011 Sep 7;278(1718):2654-61. doi: 10.1098/rspb.2010.2742. Epub 2011 Feb 2.

10.

Reduced metabolic cost of locomotion in Svalbard rock ptarmigan (Lagopus muta hyperborea) during winter.

Lees J, Nudds R, Stokkan KA, Folkow L, Codd J.

PLoS One. 2010 Nov 15;5(11):e15490. doi: 10.1371/journal.pone.0015490.

11.

A circadian clock is not required in an arctic mammal.

Lu W, Meng QJ, Tyler NJ, Stokkan KA, Loudon AS.

Curr Biol. 2010 Mar 23;20(6):533-7. doi: 10.1016/j.cub.2010.01.042. Epub 2010 Mar 11.

12.

Ambient temperature effects on photo induced gonadal cycles and hormonal secretion patterns in Great Tits from three different breeding latitudes.

Silverin B, Wingfield J, Stokkan KA, Massa R, Järvinen A, Andersson NA, Lambrechts M, Sorace A, Blomqvist D.

Horm Behav. 2008 Jun;54(1):60-8. doi: 10.1016/j.yhbeh.2008.01.015. Epub 2008 Mar 10.

PMID:
18402961
14.

Where clocks are redundant: weak circadian mechanisms in reindeer living under polar photic conditions.

van Oort BE, Tyler NJ, Gerkema MP, Folkow L, Stokkan KA.

Naturwissenschaften. 2007 Mar;94(3):183-94. Epub 2006 Nov 28.

PMID:
17131139
15.

Circadian organization in reindeer.

van Oort BE, Tyler NJ, Gerkema MP, Folkow L, Blix AS, Stokkan KA.

Nature. 2005 Dec 22;438(7071):1095-6.

PMID:
16371996
16.
18.

Melatonin is rhythmic in newborn seals exposed to continuous light.

Aarseth JJ, Van't Hof TJ, Stokkan KA.

J Comp Physiol B. 2003 Feb;173(1):37-42. Epub 2002 Dec 10.

PMID:
12592441
19.

Food-anticipatory activity and liver per1-luc activity in diabetic transgenic rats.

Davidson AJ, Stokkan KA, Yamazaki S, Menaker M.

Physiol Behav. 2002 May 1;76(1):21-6.

PMID:
12175585
21.

Entrainment of the circadian clock in the liver by feeding.

Stokkan KA, Yamazaki S, Tei H, Sakaki Y, Menaker M.

Science. 2001 Jan 19;291(5503):490-3.

22.

Seasonal and daily variations in plasma melatonin in the high-arctic Svalbard ptarmigan (Lagopus mutus hyperboreus).

Reierth E, Van't Hof TJ, Stokkan KA.

J Biol Rhythms. 1999 Aug;14(4):314-9.

PMID:
10447312
23.

Dual entrainment by light and food in the Svalbard ptarmigan (Lagopus mutus hyperboreus).

Reierth E, Stokkan KA.

J Biol Rhythms. 1998 Oct;13(5):393-402.

PMID:
9783230
24.

Pineal and thyroid functions in newborn seals.

Stokkan KA, Vaughan MK, Reiter RJ, Folkow LP, Mårtensson PE, Sager G, Lydersen C, Blix AS.

Gen Comp Endocrinol. 1995 Jun;98(3):321-31.

PMID:
7628691
25.

Melatonin rhythms in Arctic urban residents.

Stokkan KA, Reiter RJ.

J Pineal Res. 1994 Jan;16(1):33-6.

PMID:
8158521
26.

Photoperiodic adaptation to breeding at different latitudes in great tits.

Silverin B, Massa R, Stokkan KA.

Gen Comp Endocrinol. 1993 Apr;90(1):14-22.

PMID:
8504918
27.

Type II iodothyronine 5'-deiodinase in mouse brown adipose tissue is stimulated by a single injection of isoproterenol in an oil/water emulsion.

Lerchl A, Stokkan KA, Nonaka KO, Vaughan MK, Reiter RJ.

Exp Clin Endocrinol. 1993;101(3):197-9.

PMID:
8223993
28.

Age-associated reduction in pineal beta-adrenergic receptor density is prevented by life-long food restriction in rats.

Henden T, Stokkan KA, Reiter RJ, Nonaka KO, Lerchl A, Jones DJ.

Biol Signals. 1992 Jan-Feb;1(1):34-9.

PMID:
1339169
29.

Attenuated nocturnal rise in pineal and serum melatonin in a genetically cardiomyopathic Syrian hamster with a deficient calcium pump.

Reiter RJ, White T, Lerchl A, Stokkan KA, Rodriguez C.

J Pineal Res. 1991 Oct-Nov;11(3-4):156-62.

PMID:
1724460
30.
31.

Endocrine and metabolic effects of life-long food restriction in rats.

Stokkan KA, Reiter RJ, Vaughan MK, Nonaka KO, Lerchl A.

Acta Endocrinol (Copenh). 1991 Jul;125(1):93-100.

PMID:
1872131
32.

Food restriction retards aging of the pineal gland.

Stokkan KA, Reiter RJ, Nonaka KO, Lerchl A, Yu BP, Vaughan MK.

Brain Res. 1991 Apr 5;545(1-2):66-72.

PMID:
1713529
33.

Parathion (O,O-dimethyl-O-p-nitrophenyl phosphorothioate) induces pineal melatonin synthesis at night.

Attia AM, Reiter RJ, Stokkan KA, Mostafa MH, Soliman SA, el-Sebae AK.

Brain Res Bull. 1991 Apr;26(4):553-7.

PMID:
1714339
34.

Evidence that extremely low frequency Ca(2+)-cyclotron resonance depresses pineal melatonin synthesis in vitro.

Lerchl A, Reiter RJ, Howes KA, Nonaka KO, Stokkan KA.

Neurosci Lett. 1991 Apr 1;124(2):213-5.

PMID:
1712438
35.

Low temperature stimulates pineal activity in Syrian hamsters.

Stokkan KA, Nonaka KO, Lerchl A, Vaughan MK, Reiter RJ.

J Pineal Res. 1991 Jan;10(1):43-8.

PMID:
2056431
36.

Evidence that interferon-gamma alters pineal metabolism both indirectly via sympathetic nerves and directly on the pinealocytes.

Withyachumnarnkul B, Reiter RJ, Lerchl A, Nonaka KO, Stokkan KA.

Int J Biochem. 1991;23(12):1397-401.

PMID:
1662162
37.

Marked rapid alterations in nocturnal pineal serotonin metabolism in mice and rats exposed to weak intermittent magnetic fields.

Lerchl A, Nonaka KO, Stokkan KA, Reiter RJ.

Biochem Biophys Res Commun. 1990 May 31;169(1):102-8.

PMID:
1693500
38.
39.

Food intake, feeding rhythm, and body mass regulation in Svalbard rock ptarmigan.

Stokkan KA, Mortensen A, Blix AS.

Am J Physiol. 1986 Aug;251(2 Pt 2):R264-7.

PMID:
3740307
40.

The annual breeding cycle of the high-arctic Svalbard ptarmigan (Lagopus mutus hyperboreus).

Stokkan KA, Sharp PJ, Unander S.

Gen Comp Endocrinol. 1986 Mar;61(3):446-51.

PMID:
3956996
41.

Endocrine changes associated with fat deposition and mobilization in svalbard ptarmigan (Lagopus mutus hyperboreus).

Stokkan KA, Harvey S, Klandorf H, Unander S, Blix AS.

Gen Comp Endocrinol. 1985 Apr;58(1):76-80.

PMID:
3988037
42.

The development of photorefractoriness in castrated willow ptarmigan (Lagopus lagopus lagopus).

Stokkan KA, Sharp PJ.

Gen Comp Endocrinol. 1984 Jun;54(3):402-8.

PMID:
6735157
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49.

On the elicitation of the diving responses in ducks.

Blix AS, Rettedal A, Stokkan KA.

Acta Physiol Scand. 1976 Dec;98(4):478-83.

PMID:
998298

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