Hyalophora cecropia
Active Transport of Caesium by the Isolated and Short Circuited Midgut of Hyalophora Cecropia
... Cs flux through the isolated short-circuited midgut of Hyalophora cecropia larvae from blood side to lumen Bathing solution 24'O mM-Cs and 6-2 mM-K.. For each flux value the short-circui[r] ...
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Active Transport of Potassium and Oxygen Consumption in the Isolated Midgut of Hyalophora Cecropia
... After Harvey & Nedergaard 1964 demonstrated that potassium is actively transported from blood side to lumen of the isolated midgut of Hyalophora cecropia L, it seemed feasible to measure[r] ...
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Active Transport of Sodium by the Isolated Midgut of Hyalophora Cecropia
... Sodium flux from blood-side to lumen of the short-circuited, isolated midgut of Hyalophora cecropia The bathing solutions on both sides of the midgut contained i6mM-Na + , 16 mM-K+, 30 m[r] ...
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Carbonic Anhydrase Activity During the Larval Pupal Transformation of Hyalophora Cecropia Reared on Foliage and Synthetic Diet: Effects of Potassium and Chloride on Midgut, Fat Body and Integumentary Enzymes
... CARBONIC ANHYDRASE ACTIVITY DURING THE LARVAL-PUPAL TRANSFORMATION OF HYALOPHORA CECROPIA REARED ON FOLIAGE AND SYNTHETIC DIET: EFFECTS OF POTASSIUM AND CHLORIDE ON MIDGUT, FAT BODY AND [r] ...
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Potassium exchange between bathing solution and midgut of Hyalophora cecropia and time delay for potassium flux through the midgut
... Harvey & Zerahn 1969 found that it takes about 12 min for the total midgut K to reach a relative specific activity of 70 % with, respect to the specific activity of the labelled K in the[r] ...
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Cation distributions across the larval and pupal midgut of the lepidopteran, Hyalophora cecropia, in vivo
... Three dramatic changes in cation levels were found: the K level in the contents drops from 284151 mEquiv./l tissue water in the fifth-instar larva to 51 ± 6 mEquiv./l in the new pupa; th[r] ...
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The Role of Lipid in Adult Development and Flight Muscle Metabolism in Hyalophora Cecropia
... These results support the suggestion that the onset of flight activity is the major causative factor in the sudden decrease in lipid of male moths during the early days of adult life, an[r] ...
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Kinetics and Route of Active K Transport in the Isolated Midgut of Hyalophora Cecropia
... Similarly, when the K concentration was reduced to 2 mM leaving no cation to exchange with cell K simply by replacing part of the potassium by sucrose, the K transport was reduced to 5*2[r] ...
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Active Transport of α Aminoisobutyric Acid by the Isolated Midgut of Hyalophora Cecropia
... Effect of anaerobic conditions on the fluxes of a-aminoisobutyric acid across the Cecropia midgut The fluxes and potential differences are first measured under aerobic conditions in two [r] ...
6
Influx Theory and Size of Potassium and Rubidium Pools in the Midgut of Hyalophora Cecropia
... As was shown by Wood & Harvey 1975, the size of the pool which must become labelled before a 'tracer steady-state' see Introduction is attained is given by the area between the curves re[r] ...
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Activity Patterns and Energetics of the Moth, Hyalophora Cecropia
... When the resting metabolism is added to the calculated metabolism for activity MAC + MT the percentage difference found between this corrected value and the directly determined metabolic[r] ...
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Inhibition of active K transport in the isolated midgut of Hyalophora cecropia by Tl+
... The transport may be directly measured by the short-circuit current Harvey & Nedergaard, 1964, and is inhibited by thallous ions Zerahn & Koefoed, 1979.. This inhibition is most effectiv[r] ...
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Active transport of magnesium across the isolated midgut of Hyalophora cecropia
... The steady-state concentration of magnesium in the midgut contents is well below the apparent K^ of the isolated system but sufficiently high 9raMcompared to X m = 34 ITIM to yield a sub[r] ...
8
Active transport of calcium across the isolated midgut of Hyalophora cecropia
... Thus the active K transport - demonstrated in vitro acts in vivo to maintain potassium at a low level in the haemolymph 23 mM/1 so as to oppose the large electrochemical gradient driving[r] ...
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Transport of Thallium Ions Across the Isolated Midgut of Hyalophora Cecropia
... Effect of te\mterature oni 77+ flux from blood-side to lumen of the isolated cecropia midgut Flux /iequiv/h, solution 32-K+ 1 mM-Tl+ or o-i mM-Tl+... Ratio Mean ratio.[r] ...
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Effects of Ambient Temperature on Warm Up in the Moth Hyalophora Cecropia
... 426, that heat production during warm-up depends on the difference between thoracic and ambient temperature AT, encounters difficulties.. It seems more reasonable to suggest that the rat[r] ...
6
Mechanisms for the Control of Body Temperature in the Moth, Hyalophora Cecropia
... Since the rate of heat loss increases exponentially with increasing gradient between the animal and its surroundings, the rate of heat production during warm-up is not constant but must [r] ...
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Active Transport of Potassium by the Cecropia Midgut
... The potential profile recorded as a microelectrode is advanced from the blood side through the isolated midgut of Hyalophora cecropia consists of negative plateaus followed by a large po[r] ...
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Role of active potassium transport by integumentary epithelium in secretion of larval pupal moulting fluid during silkmoth development
... This paper will deal with the mechanism of formation of the potassium salt solution by the pharate pupal integument PPI of Hyalophora cecropia L: this solution constitutes the bulk of th[r] ...
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Refinements in the Short Circuit Technique and its Application to Active Potassium Transport Across the Cecropia Midgut
... Potential profiles in three hypothetical situations are shown below, i open-circuit, with no current flow, and potential difference Vo across the tissue; ii idealized short-circuit, with[r] ...
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