Comparative studies of sodium transport and its relation to hydrostatic pressure in deep and shallow water gammarid crustaceans from Lake Baikal

Bräuer, Ralph W.; Bekman, M. Y.; Keyser, J.B; Nesbitt, D.L; Shvetzov, S.G; Sidelev, G.N; Wright, Stillman

doi:10.1016/0300-9629(80)90391-6

Cited by 12 publications

(1 citation statement)

References 18 publications

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“…Membrane structure changes could be responsible for permeability changes leading to changes in nerve excitability. Brauer et al, (1980) have shown that deep-living freshwater amphipods go into negative ion balance at 1 atm and Johnson and Miller (1975) have shown that pressure affects the permeability of model membranes to some ions. In addition, pressure induced changes in nerve membrane conductance have been demonstrated in both shalk>' v (Spyropoulos, 1957;Wann et al, 1979) and deep-living species (Campenot, 1975).…”

Section: Discussionmentioning

confidence: 99%

EFFECTS OF PRESSURE AND TEMPERATURE ON THE EKG AND HEART RATE OF THE HYDROTHERMAL VENT CRABBYTHOGRAEA THERMYDRON(BRACHYURA)

Mickel¹,

Childress²

1982

The Biological Bulletin

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Effects of pressure and temperature on the electrocardiogram (EKG) and heart rate of crabs from the Galapagos deep-sea (2500 meters) hydrothermal vents were studied. Vent crabs require high hydrostatic pressure for long term survival. During decompression their EKG is disrupted and their heart rate is reduced. Low temperature reduces these decompression effects. The crabs have a higher temperature tolerance while at their environmental pressure (238 atm) and can withstand shortterm exposure to temperatures as high as 37C. Possible mechanisms for the action of pressure on neuromuscular systems are discussed. Habits and physiological capabilities of the crabs in the unusual vent environment are suggested on the basis of their physiological tolerances.

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Section: Discussionmentioning

confidence: 99%

EFFECTS OF PRESSURE AND TEMPERATURE ON THE EKG AND HEART RATE OF THE HYDROTHERMAL VENT CRABBYTHOGRAEA THERMYDRON(BRACHYURA)

Mickel¹,

Childress²

1982

The Biological Bulletin

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Effects of changes in hydrostatic pressure on Na transport in gammarid amphipods from Lake Baikal

et al. 1985

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A 60-140-atm change in the hydrostatic pressure causes freshwater gammarid amphipods from Lake Baikal to lose Na+ to the medium. This effect occurs whether the change is an increase in pressure for shallow species or a decrease in pressure for deep species. The pressure effect is predominantly upon unidirectional influx. A pressure-induced change in the dynamic fluidity of the membrane is suggested as a possible mode of action.

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The ionic composition of the plasma and erythrocytes of deep sea fish

et al. 1985

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This paper reports measurements of the plasma osmolarities, the main inorganic ions and the concentrations of plasma proteins in nine species of deep sea fish from depths of 900-4,000 m. Chloride and magnesium values are high compared to those of shallow water fish. These ions may be contaminants from sea water either contributing to, or resulting from, the animals' moribund condition. They may also contribute to the failure of isolated erythrocytes to show ionic regulation even after being restored to their normal high pressure.

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Comparative studies of sodium transport and its relation to hydrostatic pressure in deep and shallow water gammarid crustaceans from Lake Baikal

Cited by 12 publications

References 18 publications

EFFECTS OF PRESSURE AND TEMPERATURE ON THE EKG AND HEART RATE OF THE HYDROTHERMAL VENT CRABBYTHOGRAEA THERMYDRON(BRACHYURA)

EFFECTS OF PRESSURE AND TEMPERATURE ON THE EKG AND HEART RATE OF THE HYDROTHERMAL VENT CRABBYTHOGRAEA THERMYDRON(BRACHYURA)

Effects of changes in hydrostatic pressure on Na transport in gammarid amphipods from Lake Baikal

The ionic composition of the plasma and erythrocytes of deep sea fish

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