Effects of sodium-transport inhibitors on diuresis and mid-gut (Na+ + K+)-ATPase in the tsetse fly Glossina morsitans

1982 ◽  
Vol 28 (6) ◽  
pp. 553-558 ◽  
Author(s):  
A.J. Peacock
Keyword(s):  
Sodium Transport ◽  
Tsetse Fly ◽  
Glossina Morsitans ◽  
Transport Inhibitors

Fluid secretion by the malpighian tubules of the tsetse fly Glossina morsitans: the effects of ouabain, ethacrynic acid and amiloride

1976 ◽  
Vol 65 (2) ◽  
pp. 323-332
Author(s):  
J. D. Gee
Keyword(s):  
Sodium Transport ◽  
Cardiac Glycoside ◽  
Ethacrynic Acid ◽  
Fluid Secretion ◽  
Sodium Concentration ◽  
Tsetse Fly ◽  
Malpighian Tubules ◽  
Sodium Ions ◽  
Glossina Morsitans ◽  
Sodium And Potassium

The effects of three inhibitors of sodium transport on the secretion of fluid by the Malpighian tubules of Glossina morsitans have been observed. The cardiac glycoside, ouabain, affects neither the rate of secretion nor the sodium concentration of the fluid secreted when isolated tubules are bathed by solutions containing a range of sodium and potassium concentrations. Secretion is inhibited, however, by ethacrynic acid and amiloride. The results confirm that fluid secretion by the Malpighian tubules of this insect is dependent on the active transport of sodium ions and show that Na+/k+ exchange pumps are not involved in this process.

Digestion in the tsetse fly Glossina morsitans Westw.: the effect of feeding field-caught flies on guineapigs in the laboratory

1967 ◽  
Vol 57 (3) ◽  
pp. 447-450 ◽  
Author(s):  
P. A. Langley
Keyword(s):  
Natural Environment ◽  
Environmental Conditions ◽  
Tsetse Fly ◽  
Rapid Loss ◽  
Glossina Morsitans ◽  
The Third ◽  
Laboratory Conditions ◽  
Effect Of Feeding ◽  
Blood Meals

It has been shown that adults of Glossina morsitans Westw. that have fed from a bait ox in their natural environment digest their blood meals more rapidly than others that have emerged and been fed in the laboratory, even when both are maintained under identical environmental conditions after feeding.In further experiments with G. morsitans in Rhodesia, flies caught in the field and fed in the laboratory were found to lose their ability to digest their meals rapidly. Measurements, made throughout three hunger cycles, of the rate of digestion, as reflected in the rate of excretion, of blood meals by field-caught flies fed on guineapigs in the laboratory showed that this was not significantly different from that of the normal, flied-fed flies during the first two hunger cycles but that during the third it fell to a level comparable to that of flise that emerged and were fed in the laboratory.It is concluded that whatever may be the events that condition the field flies to digest their meals rapidly in the natural environment, these are repeated with the ingestion of each meal, and that laboratory conditions cause a rapid loss of this greater digestive capability.

The Effect of Temperature on the Reaction ofGlossina morsitansWestw. to Light

1937 ◽  
Vol 28 (3) ◽  
pp. 499-503 ◽  
Author(s):  
Rupert W. Jack ◽  
W. L. Williams
Keyword(s):  
Tsetse Fly ◽  
Effect Of Temperature ◽  
Glossina Morsitans

In the course of studies of the behaviour of the tsetse-fly,Glossina morsitans, certain facts of considerable interest concerning its phototropic reactions have been established.

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