[PDF] Top 20 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] ... See full document

... 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] ... See full document

... The present report is mainly concerned with investigation into the effect of different temperatures and different concentrations of the medium on the rate of loss of ions from the body, [r] ... See full document

... 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 concentra[r] ... See full document

... Ratios of concentrations of Na, K and Cl inside and outside muscle cells, in snails from stream water, 1-20% sea water, and in washed-out snails Significance of difference between K./K,,[r] ... See full document

... 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] ... See full document

... 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] ... See full document

... 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] ... See full document

... Whether the influx takes place by diffusion, implying a high permeability to sodium in sea water, or by exchange diffusion, is uncertain in teleosts but the continuance of the efflux at [r] ... See full document

... 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] ... See full document

... It is obvious i that in concentrated sea water substances other than Cl play a greater part in making up the total osmotic concentration Ac - A [Cl] = + 0-260 than in sea water Ac — A [C[r] ... See full document

... 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 inha[r] ... See full document

... in osmotic and ionic regulation at low temperatures that are independent of energy ...of osmotic balance following chill-coma, however, costs the insect substantial time and metabolic energy, ... See full document

... transport regulation by short-term osmotic variations has long been recognised (Ussing, 1965; for a review, see Macknight, ...fast osmotic influences on transbranchial ion transport have been studied ... See full document

... In addition, a study has been made of the actual rate of loss of sodium from the body of this animal to demonstrate that the maintenance of an almost constant haemolymph concentration do[r] ... See full document

... To confirm this, we coexpressed GST-Rho5p with an HA- ubiquitin fusion protein in W303 cells. HA-tagged ubiquitin is efficiently utilized by the ubiquitination machinery and has been shown to recapitulate ubiquitination ... See full document

... 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] ... See full document

... 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 ex[r] ... See full document

... Scholles 1933 has come to a similar conclusion, but from analyses of the blood and urine has decided that the antennary 1 Ellis 1933 has shown with Nereis diversicolur that calcium defic[r] ... See full document

... The objective of the current work was to examine the interactions of nitrate with all of the other important soluble constituents (including all anions, cations and neutral solutes most commonly present as osmotica in ... See full document