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Keywords: energetics
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Journal Articles
J Exp Biol (2021) 224 (8): jeb235846.
Published: 26 April 2021
... accompanying reproduction remains equivocal. In fact, many studies have found no difference in DEE between reproducing and non-reproducing females. One of the hypotheses explaining the lack of difference is the concept of an ‘energetic ceiling’. However, it is unclear whether the lack of increase in energy...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (8): jeb238832.
Published: 16 April 2021
... declare no competing or financial interests. 5 10 2020 17 2 2021 © 2021. Published by The Company of Biologists Ltd 2021 Summary: Experiments demonstrate that tool type, nest-substrate presence and speed all affect the energetics of avian egg puncture in a naturalistic setting...
Journal Articles
J Exp Biol (2021) 224 (6): jeb241083.
Published: 30 March 2021
... inherent similarities in travel between grizzly bears and humans, increasing the risk of encounters on shared landscapes. Energetics Ursus arctos , GPS Movement ecology Locomotion Greater Yellowstone Ecosystem * Author for correspondence ( acarnahan@wsu.edu ) Competing interests...
Journal Articles
J Exp Biol (2020) 223 (23): jeb216119.
Published: 04 December 2020
... to the shoulders can swing passively, i.e. without the need for muscle actuation. Inspired by these findings, Arellano et al. (2012) modeled the human arms as swinging pendulums driven by the horizontal motion arising at the shoulder joint. They found that at the energetically optimal walking speed...
Journal Articles
J Exp Biol (2020) 223 (22): jeb233072.
Published: 19 November 2020
... Summary: Presentation of a method for the quantification of O 2 respiration rate in the tardigrades Richtersius coronifer and Macrobiotus macrocalix using microrespirometry. Energetics O 2 respiration rate Metabolism Tardigrada Semi-terrestrial and tidal tardigrades have attracted...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (16): jeb222703.
Published: 24 August 2020
... shape). First, we investigated whether a behavioral choice could explain the shells used in sites with different wave action. Then, we experimentally tested whether the shells most frequently used in sites with different wave action reduce the energetic cost of coping with water flow. Metabolic rate was...
Journal Articles
J Exp Biol (2020) 223 (5): jeb219378.
Published: 06 March 2020
... letting its body temperature rise with the heat. Water loss Metabolism Energetics Thermal tolerance Pseudocheiridae Climate change As the world's climates warm, heatwaves are predicted to increase in intensity, frequency and duration ( Cowan et al., 2014 ; IPCC, 2013 ; Meehl and...
Journal Articles
J Exp Biol (2019) 222 (24): jeb198226.
Published: 18 December 2019
... squid in an experimental environment enables development of techniques for classifying and quantifying short-term behavioral and long-term organismal activity patterns. Persistent monitoring Gait Movement patterns Energetics Biotelemetry Squid are diverse and ecologically important...
Journal Articles
J Exp Biol (2019) 222 (24): jeb208504.
Published: 12 December 2019
...-limited dry season but that they might mobilize fat stores at the onset of the breeding season to satisfy the energetic demands of reproduction and/or to decrease costs associated with larger fat stores, such as increased predation risk. * Author for correspondence ( rrimbach@gmail.com...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (21): jeb212563.
Published: 08 November 2019
..., the most energetically expensive mode of locomotion. As uninsulated appendages, bird bills present a potential avenue for efficient heat dissipation. Puffins possess large bills and are members of the bird family with the highest known flight cost. Here, we used infrared thermography to test whether...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (17): jeb210534.
Published: 09 September 2019
..., growth rate and energetic reserves drive the outcome of a viral disease affecting an ecologically relevant model host, the Pacific oyster, Crassostrea gigas . We selected fast- and slow-growing animals, and we exposed them to high and low food rations. We evaluated their energetic reserves, challenged...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (10): jeb202390.
Published: 21 May 2019
... 2019 2 5 2019 © 2019. Published by The Company of Biologists Ltd 2019 http://www.biologists.com/user-licence-1-1/ Summary: Estuarine diamondback terrapins maintain osmotic balance under variable salinity conditions by using energetically efficient behavioral adjustments and...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (23): jeb185827.
Published: 06 December 2018
... mammals, and yet they live in cold, high-latitude waters where their high surface-to-volume ratio suggests high FMRs to stay warm. However, published FMR estimates of harbour porpoises are contradictory, with some studies claiming high FMRs and others concluding that the energetic requirements of...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (18): jeb184218.
Published: 24 September 2018
...://www.biologists.com/user-licence-1-1/ Highlighted Article: The rate of force production and active leg muscle volume can almost completely account for the metabolic cost of human running. Energetics Locomotion Running economy Biomechanics Zuntz (1897) was the first to quantify the...
Journal Articles
J Exp Biol (2018) 221 (14): jeb174169.
Published: 26 July 2018
...Helmut Kovac; Anton Stabentheiner; Robert Brodschneider ABSTRACT In endothermic wasps, foraging is an expensive activity. To maximise the benefit for the colony, wasps can optimise either the intake rate or energetic efficiency of a foraging trip. We investigated the foraging behaviour of vespine...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (10): jeb152538.
Published: 22 May 2018
... Energetics Leg morphology Stability Systematic review Meta-analysis Humans walk and run bipedally (see Glossary), with two legs moving in an alternating pattern, a half-cycle out of phase ( Alexander, 2004 ). Such gaits are sometimes called striding gaits (see Glossary) to distinguish them from...
Journal Articles
J Exp Biol (2018) 221 (9): jeb167379.
Published: 04 May 2018
... obstacles. It is unclear how the dogs acquired the complex perception and control necessary to exhibit the observed behaviour. The model may be used to investigate whether animals adopt energetically optimised behaviour in any similarly constrained ballistic task. * Author for correspondence...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (Suppl_1): jeb161836.
Published: 07 March 2018
...Brent J. Sinclair; Katie E. Marshall; Raul K. Suarez; Hans H. Hoppeler ABSTRACT Temperate, polar and alpine insects generally do not feed over winter and hence must manage their energy stores to fuel their metabolism over winter and to meet the energetic demands of development and reproduction in...
Journal Articles
J Exp Biol (2018) 221 (3): jeb162024.
Published: 13 February 2018
... consistently reduced ballistic height compared with running in normal gravity. We explain this trend by considering the vertical take-off velocity (defined as maximum vertical velocity). Energetically optimal gaits should balance the energetic costs of ground-contact collisions (favouring lower take-off...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (2): jeb167718.
Published: 30 January 2018
... RLC phosphorylation on the energetic cost of contraction and the contractile economy (ratio of mechanical output to metabolic input) of mouse fast twitch muscle in vitro (25°C). To this end, extensor digitorum longus (EDL) muscles from wild-type (WT) and from skMLCK-devoid (skMLCK −/− ) mice were...