OSMOTIC AND IONIC REGULATION
Aspects of Osmotic and Ionic Regulation in the Sturgeon
... Whether the influx takes place by diffusion, implying a high permeability to sodium in sea water, or by exchange diffusion, is un- certain in teleosts but the continuance of the efflux a[r] ...
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The Osmotic and Ionic Regulation of Asellus Aquaticus (L )
... Animals exposed to continuously flowing de-ionized water lose ions to the medium, sodium being lost at a rate sufficient to lower o.p.i and Nai to about 70% of normal in 24 hr.. The furt[r] ...
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The Osmotic and Ionic Regulation of Artemia Salina (L )
... It is clear that the changes in haemolymph osmotic pressure in different media are accounted for more by changes in the NaCl content of the animal than by changes in water content, and t[r] ...
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Osmotic and Ionic Regulation in the Isopod Crustacean Ligia Oceanica
... In the domain of ionic regulation it appears that Ligia can excrete or exclude magnesium and sulphate efficiently; calcium is accumulated to a notable extent, but about 25 % of the total[r] ...
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The Role of the Antennal Gland in the Osmotic and Ionic Regulation of Carinus Maenas
... In Table 2 are shown the average values, for urine and blood, of the concentrations of sodium, potassium, calcium, magnesium, chloride, inulin and of osmotic pressure, before exposure to[r] ...
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Osmotic and Ionic Regulation in the Prosobranch Gastropod Mollusc, Viviparus Viviparus Linn
... show the effect of increased salt concentrations of the medium on the concentration of the blood, animals were placed in de-ionized water, and in 1, 2, 5, 10, 15 and 20% sea water. There[r] ...
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Osmotic and ionic regulation in shore crabsCarcinus maenas inhabiting a tidal estuary
... HELGOI.fi, NDER MEERESUNTERSUCHUNGEN Helgol~inder Meeresunters. To this end they were maintained in net cages positioned in the estuarine waters of the river Elbe. The[r] ...
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Osmotic and ionic regulation in different populations of the new zealand freshwater crayfish Paranephrops zealandicus
... zealandicus which inhabit freshwaters of concentration o # 2-o*4 mM-NaCl show lower rates of salt loss over the first 24 h in distilled water than do members of the same species which in[r] ...
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Osmotic and Ionic Regulation in Scottish Brown Trout and Sea Trout (Salmo Trutta L )
... Such a difference in alkaline reserve could account for the statistically significant difference found between the mean serum chloride concentrations of brown trout in sea water for 10 d[r] ...
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Osmotic and Ionic Regulation in a Terrestrial Snail, Pomatias Elegans (Gastropoda, Prosobranchia) With a Note on Some Tropical Pomatiasidae
... The concentration of calcium in pomatiasid haemolymph (especially of Pomatias) is high, a value of 20-2 mM/1 being obtained for one group of Pomatias, and this is higher than any concent[r] ...
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OSMOTIC AND IONIC REGULATION IN THE SHORE CRAB, CARCINUS MAENAS, WITH NOTES ON THE BLOOD CONCENTRATIONS OF GAMMARUS LOCUSTA AND LIGIA OCEANICA
... Crabs from tank water were put for 1-5 hours in tank water + 0-46 M NaCl, and the resulting change of blood vapour pressure determined.. For comparison, other crabs from tank water were [r] ...
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Osmotic and Ionic Changes in Blood and Muscle of Migrating Salmonids
... It is tempting to correlate the changes during the reproductive period with changes in availability of steroid hormones; Canadian workers have found high levels of cortisone and cortisol[r] ...
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Osmotic and ionic requirements of the marine centric diatomCyclotella nana
... A marine fungus also has a relatively high potassium requirement (VISCHNIAC 1955). Investigation of the osmotic requirement in the region of poor growth at the low[r] ...
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Osmotic Regulation in Gunda ulvae
... A diagram illustrating the supposed course of events on transfer from pure to dilute sea water is given in Fig. Diagrammatic representation of the supposed course of events on transferri[r] ...
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Osmotic Regulation in Mosquito Larvae
... detritus, kept in sea water (its normal environment), the opposite process is observed, the fluid in the rectum becoming hypertonic to the haemolymph and approximately isotonic with the [r] ...
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Ionic and Osmotic Mechanisms Of Insect Chill-Coma And Chilling Injury
... 4.4.2 Osmotic balance of the alimentary canal Both water and cations primarily moved from the hemolymph into the gut during cold exposure. The rate of accumulation of water in each of the gut segments closely ...
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OSMOTIC AND IONIC EFFECTS IN SALT SENSITIVE AND RESISTANT WHEAT VARIETIES
... by subjecting, two wheat varieties known for their salt resistance and sensitivity, to isosmotic levels of stress with NaCl and polydhylene glycol (PEG, molecular weight-6,OO[r] ...
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Some Aspects of Osmotic Regulation in Lampreys
... Taking the mean Cl content of the fresh adult tissues as 49/iM./g., this implies a daily loss of nearly 4% of the total Cl in the body, and yet in spite of this rate of loss adults have [r] ...
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Osmoregulation and Ionic Regulation in Hydra
... 5. The results obtained indicate that the cells of Hydra are highly permeable to water, and also capable of maintaining an internal concentration of certain ions well above that of the e[r] ...
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Electrophysiological Correlates of Ionic and Osmotic Stress in an Osmoconforming Bivalve (Mytilus Edulis)
... heights are shown during low salinity exposure, T, and after recovery in normal (25 %) Ringer, O.. Depolarizations recorded in hyposmotic media from Mytilui connectives, T, 100 %-adapted[r] ...
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