Austropotamobius pallipes
Total Body Calcium and Haemolymph Calcium Concentrations in the Crayfish Austropotamobius Pallipes (Lereboullet)
... Sourie & Chaisemartin 1961 measured calcium concentration in the haemolymph of Astacus = Austropotamobius pallipes and observed an increase in the concentration of calcium in the haemoly[r] ...
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Ligand Activity in the Clearance of Metals from the Blood of the Crayfish (Austropotamobius Pallipes)
... The rate at which metal ions are cleared from the blood of the crayfish Austropotamobius pallipes can be described as the sum of fast and slow exponential processes.. The rate constants [r] ...
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Lactate sequestration in the carapace of the crayfish Austropotamobius pallipes during exposure in air
... crayfish Austropotamobius pallipes lives in streams or pools that are liable to dry up or become stagnant, and these animals are known to leave water voluntarily to forage or to invade neighbouring habitats ...
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Conservation management of the white clawed crayfish : Austropotamobius pallipes Part 1
... Appendix II of the Bern Convention for Conservation of European wildlife and Natural Resources lists Austropotamobius pallipes as a species for whose protection each contracting party must take appropriate ...
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The Regulation of Haemocyanin Oxygen Affinity during Emersion of the Crayfish Austropotamobius Pallipes: I An In Vitro Investigation of the Interactive Effects of Calcium and L Lactate on Oxygen Affinity
... A Oxygen equilibrium curves showing the decrease in the oxygen affinity at 15 °C of Austropotamobius pallipes haemolymph when dialysed against crayfish Ringer in which the concentrations[r] ...
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Extracellular and intracellular acid base status in the freshwater crayfish, Austropotamobius pallipes between 1 and 12(o)C
... winter are given in Fig. 4. This figure is adapted from Quist et al. (1977) and shows the relationship between temperature and blood pH in a range of poikilotherms. The predicted limits of the pH range are based on the ...
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THE EFFECTS OF SEASONAL VARIATIONS IN TEMPERATURE ON EXTRACELLULAR ACID BASE STATUS IN A WILD POPULATION OF THE CRAYFISH AUSTROPOTAMOBIUS PALLIPES
... This study was centred on adult males from a wild population of the temperate crayfish, Austropotomobius pallipes (L.), which inhabits a large, shallow, stream-fed pool in the West Midlands. The animals are ...
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The Effect of Long Term Aerial Exposure on Heart Rate, Ventilation, Respiratory Gas Exchange and Acid Base Status in the Crayfish Austropotamobius Pallipes
... The present study describes the progressive changes in heart rate, ventilation rate, respiratory gas exchange and acid-base balance in the crayfish within the first hour of exposure to a[r] ...
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The Regulation of Haemocyanin Oxygen Affinity During Emersion of the Crayfish Austropotamobius Pallipes: III The Dependence of Ca2+ Haemocyanin Binding on the Concentration Of L Lactate
... The concentration of 'cold' calcium, measured spectrophotometrically, in haemolymph dialysed against Ringer's solution pH 79 containing Ca 2+ at 45, 17 and 9 mmol P 1 and no lactate, and[r] ...
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Water chemistry and endangered white-clawed crayfish: A literature review and field study of water chemistry association in Austropotamobius pallipes
... A. pallipes populations in Europe are found in waters with relatively low sulphate concentra- tion relative to European and global ...A. pallipes in urban areas in relatively high concentrations of sodium, ...
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The Effect of Progressive Hypoxia on Heart Rate, Ventilation, Respiratory Gas Exchange and Acid Base Status in the Crayfish Austropotamobius Pallipes
... 1 The respiratory and cardiovascular changes associated with progressive hypoxia a Rate of oxygen uptake Afro The rate of oxygen uptake lttOl was measured for 7 animals of mean mass 6i-[r] ...
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The Regulation of Haemocyanin Oxygen Affinity during Emersion of the Crayfish Austropotamobius Pallipes: II An Investigation of in Vivo changes in Oxygen Affinity
... pallipes the initial acidosis of the haemolymph during air exposure was demonstrated to be of Key words: crayfish, L-lactate, calcium, haemocyanin, oxygen affinity, emersion.... MORRIS A[r] ...
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Monitoring of white clawed crayfish Austropotamobius pallipes in Irish lakes in 2007
... The site surveyed on Lough Mask was located on the eastern shore of the lake near Ballinrobe.. The site was accessed via a small gravel.[r] ...
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Calcium Regulation in the Freshwater Crayfish Austropotamobius Pallipes (Lereboullet)
... Calcium balance in winter intermoult animals September-December was studied by placing the crayfish individually in small volumes 250 or 500 ml of artificial tapwater containing 1 mM-Ca [r] ...
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Respiration in relation to ion uptake in the crayfish Austropotamobius pallipes (Lereboullet)
... In Expts 1-13, active ion uptake presumably occurred when salt-depleted crayfish were exposed to ALW containing sodium, and if active ion uptake requires additional energy then some incr[r] ...
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Calcium Balance at the Postmoult Stage of the Freshwater Crayfish Austropotamobius Pallipes (Lereboullet)
... Sodium and chloride ions are presumably absorbed simultaneously in postmoult crayfish, to restore their concentration in the haemolymph reduced by water uptake at the moult.. These sugge[r] ...
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Calcium Balance at the Premoult Stage of the Freshwater Crayfish Austropotamobius Pallipes (Lereboullet)
... Calcium activity in the haemolymph The concentration of ionized calcium in the haemolymph of Austropotamobius at the late premoult stage D4 was measured as described previously Greenaway[r] ...
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A technical manual for monitoring white clawed crayfish Austropotamobius pallipes in Irish lakes
... Method Equipment Lake Advantages Limitations / Required characteristics Disadvantages where the method is suitable Snorkelling Wet suit or dry Shallow and deep Closer to the target Time [r] ...
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The Role of the ‘Walking Legs’ in Aquatic and Terrestrial Locomotion of the Crayfish Austropotamobius Pallipes (Lereboullet)
... Taking groups A and D together, half of all the cases in which amputation of the second pair of legs caused a decrease in the distance moved per step were recorded when the crayfish was [r] ...
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The Electrical Potential Difference Across the Epithelium of Isolated Gills of the Crayfish Austropotamobius Pallipes (Lereboullet)
... Changes of the electrical potential were recorded when the concentration of a single electrogenic ion was changed in the external medium o-oi Ringer, and were used to define an apparent [r] ...
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