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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
..., increasing the risk of encounters on shared landscapes. Energetics Ursus arctos , GPS Movement ecology Locomotion Greater Yellowstone Ecosystem Energy is a limiting factor for many species of wildlife ( Parker et al., 1984 ; Shepard et al., 2013 ). Because daily and seasonal movements are...
Journal Articles
J Exp Biol (2020) 223 (23): jeb216119.
Published: 04 December 2020
.... 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 (1.25 m s −1 ), the arms swing at their natural...
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
... signals to changes in feeding behaviour in mammals and the future effects of global climate change . Anim. Prod. Sci.   55 , 272 - 283 . 10.1071/AN14487 Munks , S. A. ( 1991 ). Ecological energetics and reproduction in the common ringtail possum, Pseudocheirus peregrinus (Marsupialia...
Journal Articles
J Exp Biol (2019) 222 (24): jeb198226.
Published: 18 December 2019
... ). Currents as environmental constraints on the behavior, energetics and distribution of squid and cuttlefish . Bull. Mar. Sci.   71 , 601 - 617 . Porteiro , F. M. and Martins , H. ( 1994 ). Biology of Loligo forbesi Steenstrup, 1856 (Mollusca:Cephalopoda) in the Azores: sample composition...
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. We assessed the agreement between the estimates of FM and TBW...
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
... by using energetically efficient behavioral adjustments and water conservation strategies. Although terrapins possess lachrymal salt glands, they are still dependent on periodic access to freshwater or low salinity water in order to maintain osmotic balance and cannot survive in seawater indefinitely...
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
.... Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors. References Barclay , C. J. , Lichtwark , G. A. and Curtin , N. A. ( 2008 ). The energetic cost of activation in mouse fast-twitch muscle is the same...
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...