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Keywords: calcium
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Journal Articles
J Exp Biol (2021) 224 (6): jeb237891.
Published: 15 March 2021
... eggs and obligate placentotrophy. One major event that favored the evolution of placentation was the reduction of the eggshell. As with all oviparous reptiles, lizard embryos obtain calcium from both the eggshell and egg yolk. Therefore, the loss of the eggshell likely imposes a constraint for the...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (14): jeb176909.
Published: 26 July 2018
... −1 , citral and carvone produced a significant reduction in EPSP amplitude, with citral producing the largest effect. Measurement of miniature EPSP amplitudes demonstrated that citral produced over a 50% reduction in transmitter release. Calcium imaging experiments showed that citral produced about...
Journal Articles
J Exp Biol (2017) 220 (23): 4418–4425.
Published: 01 December 2017
... sarcomeres by observing length changes of proximal and distal titin segments in the presence and absence of calcium. We labeled I-band titin with fluorescent F146 antibody in rabbit psoas myofibrils and tracked segmental elongations during passive (no calcium) and active (high calcium) stretch. Without...
Journal Articles
J Exp Biol (2017) 220 (22): 4234–4241.
Published: 15 November 2017
... picta bellii . Skinned multicellular preparations were exposed to six treatments with physiologically relevant levels of pH (7.4, 7.0, 6.6) and P i (3 and 8 mmol l −1 ). Each preparation was tested in a range of calcium concentrations (pCa 9.0–4.5) to determine the pCa–tension relationship for each...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (24): 3988–3995.
Published: 15 December 2016
...Raymond W. M. Kwong; Yusuke Kumai; Velislava Tzaneva; Estelle Azzi; Nina Hochhold; Cayleih Robertson; Bernd Pelster; Steve F. Perry ABSTRACT The present study investigated the potential role of hypoxia-inducible factor (HIF) in calcium homeostasis in developing zebrafish ( Danio rerio ). It was...
Journal Articles
J Exp Biol (2016) 219 (18): 2806–2808.
Published: 15 September 2016
.... Published by The Company of Biologists Ltd 2016 Summary: Thyroid hormone plays a key role in maintaining normal levels of skeletal muscle force production in carp, but this is not mediated via SERCA. Calcium Fatigue Force Hypothyroidism Stress Thyroid hormone plays a key role in...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (21): 3487–3498.
Published: 01 November 2015
...Jenny Tynyakov; Shmuel Bentov; Shai Abehsera; Galit Yehezkel; Ziv Roth; Isam Khalaila; Simy Weil; Amir Berman; Inbar Plaschkes; Moshe Tom; Eliahu D. Aflalo; Amir Sagi ABSTRACT Some crustaceans possess exoskeletons that are reinforced with calcium carbonate. In the crayfish Cherax quadricarinatus...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (20): 3336–3343.
Published: 01 October 2015
...Wei Chen; Fei Zhao; Zhi Mei Tian; Han Xing Zhang; Dong Ruan; Yan Li; Shuang Wang; Chun Tian Zheng; Ying Cai Lin ABSTRACT The objective of this study was to determine the effects of dietary calcium deficiency on the process of shell formation. Four hundred and fifty female ducks ( Anas platyrhynchos...
Journal Articles
J Exp Biol (2014) 217 (18): 3346–3355.
Published: 15 September 2014
...David James Dukoff; David William Hogg; Peter John Hawrysh; Leslie Thomas Buck Oxygen deprivation triggers excitotoxic cell death in mammal neurons through excessive calcium loading via over-activation of N -methyl- d -aspartate (NMDA) and alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid...
Journal Articles
J Exp Biol (2014) 217 (7): 1180–1186.
Published: 01 April 2014
...Monica D. Poteat; David B. Buchwalter Calcium sequestration in the hypo-osmotic freshwater environment is imperative in maintaining calcium homeostasis in freshwater aquatic organisms. This uptake process is reported to have the unintended consequence of potentially toxic heavy metal (Cd, Zn...
Journal Articles
J Exp Biol (2014) 217 (1): 119–128.
Published: 01 January 2014
... organismal stress tolerance cannot be underestimated. At a molecular level, multiple cell-specific signalling pathways including cyclic cAMP, cyclic cGMP and calcium modulate tissue, and hence, organismal responses to stress. Thus, epithelial cell-specific signal transduction can be usefully studied to...
Journal Articles
J Exp Biol (2013) 216 (9): 1616–1623.
Published: 01 May 2013
... binding Diplopoda allosteric regulation calcium lactate The size and complexity of metazoan animals compelled the evolution of specific anatomical and molecular traits (notably circulatory systems and O 2 -transporting proteins) to secure the transfer of O 2 from the respiratory surfaces to...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (11): 1965–1974.
Published: 01 June 2012
... of animals, while behaviour determines which environments are encountered. Here, we identified changes in the behavioural selection of external salinity in Fundulus heteroclitus , an estuarine teleost, as a consequence of digesting a meal. Fish that consumed high levels of dietary calcium exhibited a...
Journal Articles
J Exp Biol (2011) 214 (24): 4179–4185.
Published: 15 December 2011
... levels: control, exposure to low calcium availability, predator kairomone exposure during training or a combination of low calcium and predator kairomones. Snails isolated during training alone demonstrated no difference in memory formation compared with the snails trained in groups. Maintaining snails...
Journal Articles
J Exp Biol (2011) 214 (18): 2999–3004.
Published: 15 September 2011
...James R. Stewart; Tom W. Ecay; Benoit Heulin; Santiago P. Fregoso; Brent J. Linville SUMMARY The eggshell of oviparous lizards is a significant source of calcium for embryos, whereas the eggshell of viviparous lizards, when present, contains little calcium. In view of the potential cost to...
Journal Articles
J Exp Biol (2011) 214 (15): 2528–2533.
Published: 01 August 2011
... osphradium is an external sensory organ that demonstrates electrophysiological responses to a variety of external chemical stimuli. We examined the role, if any, played by the osphradium in sensing two environmental stressors, crowding and low environmental calcium, both known to block LTM in intact animals...
Journal Articles
J Exp Biol (2011) 214 (6): 996–1006.
Published: 15 March 2011
...Peter J. Allen; Dirk Weihrauch; Vanessa Grandmaison; Patricia Dasiewicz; Stephan J. Peake; W. Gary Anderson Calcium metabolism and mRNA levels of the epithelial calcium channel (ECaC) were examined in a freshwater cartilaginous fish, the lake sturgeon Acipenser fulvescens. Lake sturgeon were...
Journal Articles
J Exp Biol (2011) 214 (2): 263–274.
Published: 15 January 2011
... throughout fiber growth, the fibers would be highly diffusion limited (very low η) in adults and they would attain only a fraction of the observed rate of aerobic flux ( Hardy et al., 2009 ). * Author for correspondence ( kinseys@uncw.edu ) 25 8 2010 © 2011. 2011 calcium diffusion...
Journal Articles
J Exp Biol (2009) 212 (16): 2520–2524.
Published: 15 August 2009
...James R. Stewart; Tom W. Ecay; Benoit Heulin SUMMARY Embryos of oviparous squamate reptiles typically obtain calcium from both yolk and eggshell but differ from other oviparous amniotes (turtles, birds and crocodilians) because they are heavily dependent on calcium-rich yolk. Eggs of viviparous...
Journal Articles
J Exp Biol (2009) 212 (16): 2532–2540.
Published: 15 August 2009
..., olfactory sensitivity to amino acids is maintained by decreasing reliance on external Na + . * Author for correspondence (e-mail: phubbard@ualg.pt ) 20 5 2009 2009 olfaction calcium sodium salinity amino acid flatfish Maintenance of constant plasma [Ca 2+ ] and [Na...