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Keywords: endothermy
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Journal Articles
J Exp Biol (2021) 224 (1): jeb237743.
Published: 12 January 2021
... Highlighted Article: Precocial birds incubated at low temperature take longer to develop cold tolerance, with possible costs for energy acquisition in early life. Body temperature Development Endothermy Heterothermy Life history Poultry Thermoregulation In the wild, the observed...
Journal Articles
J Exp Biol (2020) 223 (21): jeb233668.
Published: 04 November 2020
...-shivering thermogenesis was not reinforced by sea acclimatization. This result suggests that king penguins mainly rely on skeletal muscle contraction (shivering or locomotor activity) to maintain endothermy at sea. Sea-acclimatized immature penguins also exhibited higher shivering efficiency and oxygen...
Journal Articles
J Exp Biol (2020) 223 (21): jeb231761.
Published: 03 November 2020
... torpor, which is characterised by controlled reductions of metabolism and body temperature ( T b ). We investigated at what age the precocial king quail Coturnix chinensis can defend a high T b under a mild thermal challenge and whether they can express torpor soon after achieving endothermy to overcome...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (15): jeb223974.
Published: 11 August 2020
.../ Summary: Thermogenic UCP1 was pseudogenized much earlier than previously thought, in a common ancestor of peccaries and pigs, providing the molecular rationale for cold sensitivity and current tropical biogeography among extant peccaries. Uncoupling protein 1 Endothermy Evolution Brown adipose...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (21): jeb210963.
Published: 31 October 2019
... (cold-induced V̇ O 2 ,max ). However, it is unclear how selection at HA for shivering thermogenesis acts early in the development of small altricial mammals, which are born with immature skeletal muscles and without the capacity for homeothermic endothermy. We have previously shown that postnatal...
Journal Articles
J Exp Biol (2019) 222 (6): jeb197152.
Published: 15 March 2019
... Homeothermy Endothermy Mammals Specialist–generalist Endothermic homeothermy – the maintenance of a stable and high body temperature ( T b ) via internal heat production – requires effective metabolic machinery responsible for the high self-maintenance costs that characterise endothermic animals...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (Suppl_1): jeb169425.
Published: 07 March 2018
... brown adipose tissue, thus baring pivotal clues to fully understand the importance of this heater organ. Beige adipose tissue Uncoupling protein Thermogenesis Marsupials Endothermy Metabolic disease Endogenous heat production is one of the most fascinating evolutionary achievements of...
Journal Articles
J Exp Biol (2017) 220 (5): 920–929.
Published: 01 March 2017
... variables and classification of torpor patterns . Physiol. Zool.   68 , 935 - 966 . 10.1086/physzool.68.6.30163788 Geiser , F. and Stawski , C. ( 2011 ). Hibernation and torpor in tropical and subtropical bats in relation to energetics, extinctions, and the evolution of endothermy...
Journal Articles
J Exp Biol (2014) 217 (20): 3593–3596.
Published: 15 October 2014
...Vincent Careau; Bethany J. Hoye; Terence W. O'Dwyer; William A. Buttemer The aerobic capacity model proposes that endothermy is a by-product of selection favouring high maximal metabolic rates (MMR) and its mechanistic coupling with basal metabolic rate (BMR). Attempts to validate this model in...
Journal Articles
J Exp Biol (2014) 217 (13): 2331–2337.
Published: 01 July 2014
.... Published by The Company of Biologists Ltd 2014 Endothermy Dermochelys coriacea Jellyfish Diving Reptile Specific dynamic action Leatherback turtles, Dermochelys coriacea (Vandelli 1761), forage on gelatinous zooplankton in temperate waters of the North Atlantic Ocean during the...
Journal Articles
J Exp Biol (2010) 213 (18): 3167–3176.
Published: 15 September 2010
... phosphorylation decreases significantly following the induction of hypothyroidism. We propose AMPK as a principal regulatory mechanism during the transition from ectothermy to endothermy in birds, and show that AMPK function in birds is similar to that observed in mammals. * Author for correspondence...
Journal Articles
J Exp Biol (2009) 212 (22): 3708–3718.
Published: 15 November 2009
... for correspondence( hans.malte@biology.au.dk ) * Present address: Virginia Institute of Marine Science, Gloucester Point, VA 23062, USA 6 8 2009 2009 2D model archival tag endothermy isotherm mathematical modeling partial differential equation temperature gradient...
Journal Articles
J Exp Biol (2009) 212 (18): 2960–2968.
Published: 15 September 2009
.... Measurements of respiration within a range of T a showed that active beetles became spontaneously endothermic at T a below 28°C but were rarely endothermic above it. There was no evidence of endothermy within the inflorescences, indicating that activities in the floral chamber can occur without the high energy...
Journal Articles
J Exp Biol (2008) 211 (14): 2239–2242.
Published: 15 July 2008
.... * Author for correspondence (e-mail: jnieh@ucsd.edu ) 12 5 2008 © The Company of Biologists Limited 2008 2008 thermoregulation foraging pollen quality endothermy Bombus The power output of insect flight muscles is proportional to muscle temperature up to certain limits...
Journal Articles
J Exp Biol (2007) 210 (23): 4254–4261.
Published: 01 December 2007
... California, Irvine, CA 92697-2525, USA(e-mail: jblank@uci.edu ) 19 9 2007 © The Company of Biologists Limited 2007 2007 endothermy metabolic rate temperature thermoregulation tuna Measurements of oxygen consumption rates( Ṁ O 2 ) in tunas are complicated by their large size...
Journal Articles
J Exp Biol (2007) 210 (19): 3440–3450.
Published: 01 October 2007
... for correspondence (e-mail: pelse@uow.edu.au ) 24 7 2007 © The Company of Biologists Limited 2007 2007 fatty acid metabolism lipid mass spectrometry glycerophospholipid reptile mammal endothermy ectothermy The resting metabolic rates of endothermic vertebrates, such...
Journal Articles
J Exp Biol (2007) 210 (15): 2618–2626.
Published: 01 August 2007
...). † Author for correspondence (e-mail: rbrill@vims.edu ) * Deceased ‡ Present address: Virginia Institute of Marine Science, Gloucester Point, VA 23062, USA 8 3 2007 © The Company of Biologists Limited 2007 2007 archival tag endothermy Scombridae swimming speed...
Journal Articles
J Exp Biol (2006) 209 (21): 4185–4192.
Published: 01 November 2006
... bees and may be a widespread adaptation facilitating rapid food collection in flying Hymenoptera. * Author for correspondence (e-mail: jnieh@ucsd.edu ) 6 9 2006 © The Company of Biologists Limited 2006 2006 thermoregulation foraging food quality endothermy Bombus...
Journal Articles
J Exp Biol (2006) 209 (14): 2678–2685.
Published: 15 July 2006
... ectothermic species. In the liver, total proton leak would be higher in the mako shark than in both ectothermic species, due to a lower proton conductance in the blue shark and a lower liver mitochondrial content in the leopard shark, and thus may contribute to endothermy. Table 1. Mean (± s.e.m...
Includes: Supplementary data
Journal Articles
J Exp Biol (2005) 208 (22): 4255–4261.
Published: 15 November 2005
...C. A. Sepulveda; N. C. Wegner; D. Bernal; J. B. Graham SUMMARY A more medial and anterior position of the red aerobic myotomal muscle (RM)and the presence of a vascular counter-current heat exchange system provide the functional elements that facilitate regional RM endothermy in tunas,lamnid sharks...