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Keywords: body condition
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Journal Articles
J Exp Biol (2020) 223 (8): jeb214825.
Published: 22 April 2020
... mass. Vespertilio murinus Energetic trade-off Body condition Spermatogenesis Heterothermy Living in seasonal, often unpredictable environments is challenging for many animals. The optimization of assimilated energy allocation among competing life-history traits is central...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (21): jeb186569.
Published: 29 October 2018
... glucocorticoids, oxidative stress, immune function or body condition represent a cost of performing offspring care and shape subsequent fitness. We use a 4 year dataset collected in free-living cooperatively breeding superb starlings ( Lamprotornis superbus ), a species in which parental and alloparental care...
Journal Articles
J Exp Biol (2017) 220 (20): 3802–3811.
Published: 15 October 2017
... a costly diving strategy compared with that in other deep-diving toothed whales. Swimming kinematics Body condition Cetacean Deep-diving marine mammals Foraging strategy Globicephala melas For breath-hold divers that feed at depth and replenish their oxygen stores at the surface...
Journal Articles
J Exp Biol (2017) 220 (17): 3135–3141.
Published: 1 September 2017
... in the plains spadefoot toad ( Spea bombifrons ), a species in which diet affects the developmental emergence of species recognition and body condition affects the expression of adult mating preferences. To do so, we manipulated the diet of juveniles for 6 weeks following metamorphosis and collected...
Journal Articles
J Exp Biol (2016) 219 (18): 2802–2805.
Published: 15 September 2016
.... This effect could occur by minimising the need for individual vigilance and reducing stress through social buffering. However, this effect has proved difficult to quantify. We examined the effect of shoaling on metabolism and body condition in the gregarious damselfish Chromis viridis . Using a novel...
Journal Articles
J Exp Biol (2016) 219 (16): 2458–2468.
Published: 15 August 2016
... phases in these animals. Implementation of this approach using longer-duration tags could be used to track longitudinal changes in body density and lipid store body condition of free-ranging cetaceans. * Author for correspondence ( pm29@st-andrews.ac.uk ) Competing interests The authors...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (7): 1022–1030.
Published: 1 April 2016
... mating season. We asked whether variation in adrenal sensitivity to adrenocorticotropic hormone (ACTH) explains why glucocorticoid responses to capture stress vary with sex, season and body condition in red-sided garter snakes. We measured glucocorticoids at 0, 1 and 4 h after injection with ACTH (0.1 IU...
Journal Articles
J Exp Biol (2015) 218 (23): 3816–3824.
Published: 1 December 2015
...://creativecommons.org/licenses/by/3.0 ), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. Summary: A step-wise filtering method to detect buoyancy changes in drift diving pinnipeds. Body condition Marine mammal Elephant...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (23): 4174–4183.
Published: 1 December 2014
... with clutch oviposition sequence, or mammalian or avian predation attempts. Instead, autumn emergence from the nest was associated with the direct mortality threat of predation by sarcophagid fly larvae. Body condition and righting response, measured as proxies of hatchling fitness, did not differ between...
Journal Articles
J Exp Biol (2014) 217 (20): 3700–3707.
Published: 15 October 2014
... spells. This study demonstrates the relevance of using mechanistic energetics modelling and body condition analyses to understand and predict the impact of extreme climatic events on animal energy balance and winter survival probabilities. Two formulae were used for the head area calculation. First, we...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (14): 2609–2619.
Published: 15 July 2014
... foraging at sea. Mature females may lose as much as 50% of their body mass, mostly in lipid stores, during the breeding season due to fasting and lactation. When departing to sea, post-breeding females are negatively buoyant, and the relative change in body condition (i.e. density) during the foraging trip...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (4): 700–708.
Published: 15 February 2013
...Camille Duval; Phillip Cassey; Ivan Mikšík; S. James Reynolds; Karen A. Spencer SUMMARY A relationship has been suggested between eggshell colour and female body condition based on the opposing antioxidant properties of the two main eggshell pigments: the antioxidant biliverdin (blue–green...
Journal Articles
J Exp Biol (2011) 214 (19): 3186–3196.
Published: 1 October 2011
.... 2011 aerobic capacity repeatability oxygen consumption body condition satin bowerbird Trait variation is fundamental to the concept of evolution by natural selection. In recent years there has been considerable interest among ecological and evolutionary physiologists about how whole...
Journal Articles
J Exp Biol (2011) 214 (17): 2973–2987.
Published: 1 September 2011
... measurements determined by isotope dilution, and therefore have the potential to track changes in body condition of a wide range of freely diving animals. Gliding during ascent and descent clearly increased and stroke rate decreased when buoyancy manipulations aided the direction of vertical transit...
Includes: Supplementary data
Journal Articles
J Exp Biol (2008) 211 (23): 3653–3660.
Published: 1 December 2008
...(AS), which amplifies protein and functional diversity. In spite of the likely consequences for organismal biology, little is known about how AS varies among individuals or responds to body condition, environmental variation or extracellular signals in general. Here we show that evolutionarily conserved...
Journal Articles
J Exp Biol (2007) 210 (19): 3407–3414.
Published: 1 October 2007
... relationship, with BMR scaling to body mass by the power of 0.68( Table 1 , Fig. 1 ). In addition to body mass, body condition was also positively related to BMR( Table 1 ). Thus, individuals with a higher body condition for a given body mass had a slightly higher BMR. There was a weak ( r 2 =0.06...
Journal Articles
In collection:
Cardiology articles
J Exp Biol (2002) 205 (16): 2511–2517.
Published: 15 August 2002
... H to estimate V̇ O 2 in free-ranging animals. Using the relationship between the oxygen pulse (OP, the amount of oxygen used per heart beat) and an index of body condition (or nutritional index, NI), a relationship between f H and V̇ O 2 was established for resting king penguins exposed to a variety...