Concentrations of cations in the blood of some terrestrial snails

The Significance of Ionic Concentrations in the Internal Media of Animals

“…In the following analysis of the pattern of cation balance in haemolymph, the data, all averages, are those for the freshwater mussels Anodonta cygnaea (Potts, 1954), Lamellidens marginalis (Rao, 1963) and Unio sp. The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965).…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a).…”

“…8(a). Burton, 1968aBurton, , 1971 suggest that the appropriate relations amongst calcium, magnesium and sodium are maintained despite variations in their absolute concentrations, for example on dehydration; but the postprandial rise in calcium and potas- sium should lead to a rise in [Ca]:. A similar value has been attributed to certain hypothetical binding sites controlling tension development in the isolated ventricle of Helixpomatiu (Burton & Loudon,1g72), but these are saturated at too low concentrations of calcium to be relevant here.…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig.…”

“…The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig. 7(a)) and the ratio of the two is in turn correlated with the concentration of magnesium, or, better, the ratio of magnesium to calcium ( Fig.…”

The Significance of Ionic Concentrations in the Internal Media of Animals

“…In the following analysis of the pattern of cation balance in haemolymph, the data, all averages, are those for the freshwater mussels Anodonta cygnaea (Potts, 1954), Lamellidens marginalis (Rao, 1963) and Unio sp. The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965).…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a).…”

“…8(a). Burton, 1968aBurton, , 1971 suggest that the appropriate relations amongst calcium, magnesium and sodium are maintained despite variations in their absolute concentrations, for example on dehydration; but the postprandial rise in calcium and potas- sium should lead to a rise in [Ca]:. A similar value has been attributed to certain hypothetical binding sites controlling tension development in the isolated ventricle of Helixpomatiu (Burton & Loudon,1g72), but these are saturated at too low concentrations of calcium to be relevant here.…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig.…”

“…The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig. 7(a)) and the ratio of the two is in turn correlated with the concentration of magnesium, or, better, the ratio of magnesium to calcium ( Fig.…”

The Significance of Ionic Concentrations in the Internal Media of Animals

“…In the following analysis of the pattern of cation balance in haemolymph, the data, all averages, are those for the freshwater mussels Anodonta cygnaea (Potts, 1954), Lamellidens marginalis (Rao, 1963) and Unio sp. The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965).…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a).…”

“…8(a). Burton, 1968aBurton, , 1971 suggest that the appropriate relations amongst calcium, magnesium and sodium are maintained despite variations in their absolute concentrations, for example on dehydration; but the postprandial rise in calcium and potas- sium should lead to a rise in [Ca]:. A similar value has been attributed to certain hypothetical binding sites controlling tension development in the isolated ventricle of Helixpomatiu (Burton & Loudon,1g72), but these are saturated at too low concentrations of calcium to be relevant here.…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig.…”

“…The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig. 7(a)) and the ratio of the two is in turn correlated with the concentration of magnesium, or, better, the ratio of magnesium to calcium ( Fig.…”

The Significance of Ionic Concentrations in the Internal Media of Animals

“…In the following analysis of the pattern of cation balance in haemolymph, the data, all averages, are those for the freshwater mussels Anodonta cygnaea (Potts, 1954), Lamellidens marginalis (Rao, 1963) and Unio sp. The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965).…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a).…”

“…8(a). Burton, 1968aBurton, , 1971 suggest that the appropriate relations amongst calcium, magnesium and sodium are maintained despite variations in their absolute concentrations, for example on dehydration; but the postprandial rise in calcium and potas- sium should lead to a rise in [Ca]:. A similar value has been attributed to certain hypothetical binding sites controlling tension development in the isolated ventricle of Helixpomatiu (Burton & Loudon,1g72), but these are saturated at too low concentrations of calcium to be relevant here.…”

“…(Rutherford & Dunham, 1970), for the prosobranch snails Viwiparus viwiparus (Little, 1965), Poteria lineata (Andrews & Little,I 971), Theodoxus Juviatilis and Eutrochate//a tankerdlei (Little,I 972) and for the fresh-water pulmonate snails (Basommatophora) Planorbarius corneus, Limnaea stagnalis (Burton, 1968 b) and L. truncatula (Pullin, 1971). The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig.…”

“…The data for terrestrial Gastropoda (Pulmonata ; Stylommatophora) are mine (Burton, 1968b(Burton, , 1971 with the addition of those for Strophocheilus oblongus (De Jorge, UlhGa Cintra et al, 1965). T o avoid the variability of blood composition that is related to feeding and the water content of the body, my data for terrestrial species were obtained from specimens that had been fasted and hydrated in the laboratory (Burton, 1971 a). I n the freshwater and terrestrial mollusca, the concentrations of potassium in the haemolymph are correlated with those of sodium ( Fig. 7(a)) and the ratio of the two is in turn correlated with the concentration of magnesium, or, better, the ratio of magnesium to calcium ( Fig.…”