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Keywords: osmolality
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Journal Articles
J Exp Biol (2020) 223 (3): jeb216424.
Published: 03 February 2020
...) on captive house sparrows in order to investigate the consequences of short-term dehydration on baseline and stress-induced corticosterone levels. As expected, water-deprived birds displayed higher plasma osmolality and haematocrit. Additionally, water-deprived birds had lower defecation rates, suggesting...
Journal Articles
J Exp Biol (2013) 216 (14): 2732–2740.
Published: 15 July 2013
... to study survival, and physiological and biochemical end points. The effect of salinity on the reproduction of German E. albidus was also assessed. Exposure for 48 h to saline soils prior to cold exposure triggered an increase in osmolality and decrease in water content. Worms exposed to saline soils had...
Journal Articles
J Exp Biol (2007) 210 (8): 1335–1349.
Published: 15 April 2007
... in the stomachs, and intestinal HCO – 3 remained low (5.12±0.83 mmol l –1 ). The colon was usually empty and its pH constant at 7.20±0.16 at all times. Despite the ingestion of strongly hypo-osmotic teleost tissue, the osmolality of the chyme remained in equilibrium with that of the blood plasma in all segments...
Journal Articles
J Exp Biol (2006) 209 (21): 4230–4237.
Published: 01 November 2006
... fluid under natural conditions. To that end, we measured the ionic content(Na + , Cl - , Ca 2+ and K + ) of the ovarian fluid and prepared ionic artificial ovarian fluids. We also prepared a mannitol solution with the same osmolality as the ovarian fluid in order to distinguish between the ionic...
Journal Articles
J Exp Biol (2006) 209 (10): 1883–1893.
Published: 15 May 2006
... pellets,incorporating ballotini beads as inert reference markers, was employed. Plasma Na + levels increased by 15–20% at 2 h post-feeding, where Cl – levels did not change. Plasma osmolality was well regulated despite an initial chyme osmolality (775 mOsm) 2.8-fold higher than that in the blood plasma...
Journal Articles
J Exp Biol (2005) 208 (14): 2693–2705.
Published: 15 July 2005
... ammonia-N rose slightly. Plasma urea-N,TMAO-N and glucose concentrations remained unchanged, while free amino acid and β-hydroxybutyrate levels exhibited modest declines. Plasma osmolality was persistently elevated after the meal relative to controls, partially explained by a significant rise in plasma Cl...
Journal Articles
J Exp Biol (2005) 208 (13): 2609–2613.
Published: 01 July 2005
...Kim Præbel; Hans Ramløv SUMMARY The influence of two food types, Boreogadus saida (Bs) and crustaceans (Cr), on the osmolality, ion concentrations, antifreeze activity and antifreeze glycoprotein (AFGP) distribution in the gastrointestinal fluids of the Arctic gadoid Arctogadus glacialis...
Journal Articles
J Exp Biol (2004) 207 (2): 337–345.
Published: 15 January 2004
... of the flow of Ca 2+ to increase [Ca 2+ ]i and protein phosphorylation. * Author for correspondence (e-mail: cokuno@mail.ecc.u-tokyo.ac.jp ) 10 10 2003 © The Company of Biologists Limited 2004 2004 sperm motility protein phosphorylation Ca 2+ osmolality tilapia Oreochromis...
Journal Articles
J Exp Biol (2003) 206 (11): 1845–1854.
Published: 01 June 2003
... recorded. Osmolality of CF demonstrated the largest scope yet recorded for a bird and was significantly correlated with water flux: mean values were 6–460 mosm kg –1 H 2 O (minimum 3, maximum 1900 mosm kg –1 ). When supplementary water was provided, its consumption by birds fed concentrated diets (2.5 mol...
Journal Articles
J Exp Biol (2003) 206 (8): 1389–1395.
Published: 15 April 2003
... heterodimers and heterotetramers. Myxine glutinosa is an osmoconformer, whose red blood cells show the exceptional ability to swell and remain swollen under hyposmotic conditions. In order to determine whether water activity regulates hemoglobin function,the effect of changes in osmolality on hemoglobin-O 2...
Journal Articles
J Exp Biol (2003) 206 (5): 913–921.
Published: 01 March 2003
... mechanisms of freshwater-acclimated tilapia were studied in detail. Tilapia sperm motility was vigorous in hypotonic conditions and decreased with increasing osmolality. Sperm motility was reduced in hypotonic conditions when extracellular Ca 2+ was chelated; however, extracellular Ca 2+ was not a major...
Journal Articles
J Exp Biol (2002) 205 (2): 167–175.
Published: 15 January 2002
...Horst Onken; John Campbell McNamara SUMMARY The osmotic and ionic status of the haemolymph and the structural and ion-transport characteristics of the posterior gills of Dilocarcinus pagei , a hololimnetic crab, were investigated. Haemolymph osmolality was 386±18 mosmol kg –1 , while [Na...
Journal Articles
J Exp Biol (1992) 164 (1): 189–203.
Published: 01 March 1992
... of transfer to suprathreshold humidities (>87 % relative humidity). The conspicuous increase in fluid volume is accompanied by a rise in osmolality from isosmotic (approximately 750mosmolkg −1 ) up to as much as 8.2osmolkg −1 . Vapour absorption is marked by the onset of metachronal pleopodal ventilation...
Journal Articles
J Exp Biol (1988) 135 (1): 215–229.
Published: 01 March 1988
... directly or indirectly, by the osmolality and free amino acid content of the haemolymph (Abisgold & Simpson, 1987). 3. The possibility that levels of dietary protein and haemolymph composition affect the response of the maxillary palp gustatory receptors is investigated. 4. Insects fed a low-protein...
Journal Articles
J Exp Biol (1987) 129 (1): 329–346.
Published: 01 May 1987
... sized meals more frequently than those fed a diet with 28% protein (P). The physiological basis for this compensatory response is investigated. 2. Insects fed the P-diet had a significantly larger increase in blood osmolality during and after a meal than did those fed the p-diet. 3. Unexpectedly...