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Keywords: body composition
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Journal Articles
J Exp Biol (2021) 224 (14): jeb239772.
Published: 22 July 2021
.... Published by The Company of Biologists Ltd 2021 Summary: Temperature, humidity and body condition have different effects on the hibernation energetics of male and female Perimyotis subflavus. Body composition Torpor Perimyotis subflavus Potential evaporative water loss Water vapor...
Journal Articles
J Exp Biol (2021) 224 (3): jeb238774.
Published: 10 February 2021
... predicts that facultative migrants do not prepare for departure, body condition declines as food availability declines, and stress-induced levels of CORT induce escape behavior when both energetic condition and food resources are low. We conducted a 16-day experiment, measuring body composition (using...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (2): jeb219543.
Published: 26 January 2021
... and reproductive issues. This study investigated relationships between estimated body composition and metabolic function, inflammatory markers, ovarian activity (females only) and physical activity levels in 44 Asian elephants ( n =35 females, n =9 males). Deuterium dilution was used to measure total body water...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (6): jeb192534.
Published: 27 March 2019
... to rear this species, or 1% yeast (low protein content similar to known host fruit). At emergence, adults from each larval diet were tested for initial mass, water content, body composition, and desiccation and starvation resistance or they were allocated to one of two adult diet treatments: sucrose only...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (1): jeb168559.
Published: 11 January 2018
... of reproductive group. Note that fat mass and per cent fat mass had positively skewed residuals, and transforms did not eliminate the skewness, but the main results are clear ( Fig. 4 ). Fig. 4. Organ masses and body composition of males. ANCOVA revealed that fat mass, triceps surae mass, testis...
Journal Articles
J Exp Biol (2017) 220 (22): 4282–4291.
Published: 15 November 2017
... higher masses of flight muscle, leg muscle, heart and lung compared with controls. In contrast, HF males had lower heart mass than controls and there were no differences for other organs. When both sexes were pooled, there were no effects of treatment on body composition. Finally, birds in the HF...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (17): 2623–2628.
Published: 1 September 2016
...Joanna Rutkowska; Edyta T. Sadowska; Mariusz Cichoń; Ulf Bauchinger ABSTRACT Patterns of physiological flexibility in response to fasting are well established, but much less is known about the contribution of water deprivation to the observed effects. We investigated body composition and energy...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (23): 3816–3824.
Published: 1 December 2015
...Samantha Alex Gordine; Michael Fedak; Lars Boehme ABSTRACT In southern elephant seals ( Mirounga leonina ), fasting- and foraging-related fluctuations in body composition are reflected by buoyancy changes. Such buoyancy changes can be monitored by measuring changes in the rate at which a seal...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (6): 984–991.
Published: 15 March 2013
... completely suppressed cortisol production for 24–72 h, demonstrating activation of GC receptors. In experiment 1, we compared the effects of a single dose of dexamethasone or saline administered 10 days after weaning on fasting mass and body composition changes, cortisol, blood urea nitrogen (BUN...
Journal Articles
J Exp Biol (2012) 215 (15): 2637–2645.
Published: 1 August 2012
... expenditure were estimated from changes in mass and body composition over 23±5 days of fasting (mean ± s.d.). Protein catabolism was assessed directly in a subset of animals based on urea flux at the beginning and end of the fast. Regulatory hormones and blood metabolites measured included growth hormone...
Journal Articles
J Exp Biol (2012) 215 (11): 1806–1815.
Published: 1 June 2012
... restriction digestive organs digestive enzymes body composition skeletal growth Chronic, moderate food shortage can occur during development of altricial birds in the wild because of fluctuating environmental conditions, inadequate parental delivery of food to the nest or sibling competition...
Journal Articles
J Exp Biol (2012) 215 (10): 1662–1669.
Published: 15 May 2012
... are high. Feather mass was 37% lower in tropical species compared with similar-sized temperate birds, supporting the idea that temperate birds require more insulation for thermoregulation. * Author for correspondence ( williams.1020@osu.edu ) 25 1 2012 © 2012. 2012 body composition...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (9): 1523–1532.
Published: 1 May 2011
... an animal perceives and responds to body weight. 19 1 2011 © 2011. 2011 Tnnt3 body weight weight sensing alternative splicing troponin T energetics metabolic rate obesity body composition skeletal muscle gastrocnemius muscle performance Skeletal muscles must counteract...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (17): 2795–2802.
Published: 1 September 2009
... respond differently to thermal acclimation, possibly due to differences in reproductive allocation. * Author for correspondence( enrico.rezende@uab.cat ) 4 6 2009 2009 acclimation body composition maximal oxygen consumption organ phenotypic plasticity Peromyscus maniculatus...
Journal Articles
J Exp Biol (2009) 212 (8): 1225–1233.
Published: 15 April 2009
..., food access and parasite load can have complex and variable effects on color displays, and that feather and bill coloration signal different aspects of male condition. carotenoids melanins plumage color body composition indicator mechanism References Andersson, M. ( 1994 ). Sexual...
Journal Articles
J Exp Biol (2007) 210 (3): 477–483.
Published: 1 February 2007
... muscle growth. The study reported here was designed to investigate the effect of induction of maternal myostatin antibody on the growth performance and body composition of the mouse. Female mice were induced to produce myostatin antibody by immunization with synthetic myostatin peptide prior to mating...
Journal Articles
J Exp Biol (2006) 209 (17): 3269–3280.
Published: 1 September 2006
...Yuuki Watanabe; Eugene A. Baranov; Katsufumi Sato; Yasuhiko Naito; Nobuyuki Miyazaki SUMMARY Buoyancy is one of the primary external forces acting on air-breathing divers and it can affect their swimming energetics. Because the body composition of marine mammals (i.e. the relative amounts of lower...
Journal Articles
J Exp Biol (2004) 207 (16): 2859–2866.
Published: 15 July 2004
... debate. To test if mass per se might be sensed and regulated, we implanted loads corresponding to 10% (HI) or 2% (LO,control) of body mass into mice in addition to sham-operated mice (SO). We recorded body mass, food intake, energy expenditure and body composition over 14 weeks. Both male and female mice...
Journal Articles
J Exp Biol (2003) 206 (19): 3405–3423.
Published: 1 October 2003
... to determine if this easily recorded dive characteristic can be used to continuously monitor changes in body composition of seals throughout their foraging trips. All seals demonstrated a similar trend over time: drift rates were initially positive but decreased steadily over the first 30-50 days after...
Journal Articles
J Exp Biol (2002) 205 (19): 3101–3105.
Published: 1 October 2002
...Edward T. Unangst, Jr; Lance A. Merkley SUMMARY We evaluated the effect of lipid location on body-composition estimation accuracy using electromagnetic scanning (EM-SCAN), a non-invasive [total body electrical conductivity (TOBEC)] method. Molds were constructed that simulated a `general' small...