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Keywords: cold acclimation
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Journal Articles
Journal Articles
J Exp Biol (2022) 225 (12): jeb242612.
Published: 28 June 2022
... (27°C) temperatures, we expected to observe an upregulation of pectoralis muscle and liver respiratory capacity that would be visible in mitochondrial adjustments in cold-acclimated birds. We also predicted that these adjustments would correlate with thermogenic capacity ( M sum ) and basal metabolic...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (18): jeb207951.
Published: 12 September 2019
... conducted cold acclimation experiments where we measured the adjustment of specific steps in OXPHOS at two assay temperatures (10 and 20°C) following 4 weeks of acclimation under normal (22°C) or low (5°C) temperature conditions. At the low temperature, the contribution of the NADH pathway to the maximal...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2013) 216 (11): 1991–2000.
Published: 1 June 2013
...Dorthe Waagner; Martin Holmstrup; Mark Bayley; Jesper G. Sørensen SUMMARY During cold periods ectotherms may improve low temperature tolerance via rapid cold hardening (RCH) over a period of hours and/or long-term cold acclimation (LTCA) during days, weeks or months. However, the effect of duration...
Journal Articles
Journal Articles
J Exp Biol (2010) 213 (12): 1991–2000.
Published: 15 June 2010
... of egg production interacted with the costs of other essential processes (such as cold acclimation and active heat production), we measured the MR of non-breeding and egg-producing zebra finches ( Taeniopygia guttata ) while (a) warm-acclimated (to 19–21°C) and measured within their thermoneutral zone...
Journal Articles
Journal Articles
J Exp Biol (2006) 209 (17): 3469–3475.
Published: 1 September 2006
... contents were measured in the aquatic subterranean crustacean Niphargus rhenorhodanensis and in the morphologically close surface-dwelling aquatic crustacean Gammarus fossarum , both acclimated at 12°C, 3°C and -2°C. Cold acclimation induced an increase in the T c values in both species but no survival...
Journal Articles
J Exp Biol (2006) 209 (16): 3141–3154.
Published: 15 August 2006
... investigated cold acclimation in a migrant shorebird known for extreme physiological flexibility, the red knot ( Calidris canutus , the northerly wintering subspecies islandica ). We measured BMR and M sum over two months in birds caught in the wild and transferred to experimentally controlled conditions...
Journal Articles
J Exp Biol (2006) 209 (13): 2462–2471.
Published: 1 July 2006
... populations of the North Sea and the Barents Sea,respectively. In white muscle, cold acclimation caused a parallel increase in citrate synthase (CS) and in cytochrome c oxidase (COX) activities,but with a much larger effect in the cold eurythermal Arctic population. In liver, cold acclimation was accompanied...
Journal Articles
J Exp Biol (2006) 209 (6): 994–1003.
Published: 15 March 2006
... remained unaltered, cold acclimation (8°C)increased HIF-1α protein amounts in the liver, gills and heart and HIF-1 DNA binding activity in the heart, gills and kidney of crucian carp by two- to threefold compared to warm acclimated fish (26°C). In the heart and kidney HIF-1 activity was already...
Includes: Supplementary data
Journal Articles
J Exp Biol (2005) 208 (12): 2409–2420.
Published: 15 June 2005
...Daniela Storch; Gisela Lannig; Hans O. Pörtner SUMMARY For an evaluation of effects of seasonal cold acclimation and evolutionary cold adaptation on protein synthesis capacity, the protein synthesis apparatus was isolated from the gills and white muscle of Antarctic eelpout Pachycara...
Journal Articles
J Exp Biol (2003) 206 (3): 487–496.
Published: 1 February 2003
... and significantly as swimming velocity approached the critical swimming speed( U crit ). Unsteady swimming behaviours during the graded exercise, however, caused abrupt and generally short-lived decreases in P v O 2 . For the cold-acclimated (6-10°C)fish, P v O 2 reached a minimum plateau value of 15.3±3.7 torr (1...
Journal Articles
Journal Articles
J Exp Biol (2000) 203 (3): 641–650.
Published: 1 February 2000
...R. J. Trueman; P. E. Tiku; M. X. Caddick; A. R. Cossins ABSTRACT Cold acclimation induces a transient enzymatic activation of the acyl CoA-Δ 9 -desaturase in carp liver. We have determined thresholds for two underlying mechanisms; namely, the activation of latent enzyme and the induced synthesis...