Results 101 to 110 of about 351 (146)

Neuroendocrine regulation of corpus allatum activity in Manduca sexta: Sequential neurohormonal and nervous inhibition in the last-instar larva [PDF]

, 1980
Govindan Bhaskaran, Grace Jones, Davy Jones   +2 more
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Allatectomy and flight performance in maleLocusta migratoria

Journal of Comparative Physiology ? B, 1975
Flight performance in locusts is a function of age, with its peak value at 18 days after emergence. While allatectomy retards the normal development of flight capability, it also has the effect of slowing down the decline in flight performance characteristic of operated control locusts as they age.
S. S. Lee, G. J. Goldsworthy
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Allatectomy and sexual receptivity in females of Schistocerca gregaria

Journal of Insect Physiology, 1977
Abstract The removal of the corpora allata from immature females of Schistocerca gregaria causes the insects to enter a phase of permanent defence towards courting males. Operated control females copulate often, although they do not appear to show an active form of sexual display or attraction.
L, Strong, F P, Amerasinghe
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Some effects of allatectomy in the female tsetse, Glossina austeni

Journal of Insect Physiology, 1976
The effects of juvenile hormone on the milk gland, ovaries, and fat body of adult female G. austeni were studied by allatectomy and hormone replacement therapy. In the absence of juvenile hormone, milk synthesis is slow, leading to the production, in a few cases, of small larvae over a prolonged inter-larval period.
G C, Ejezie, K G, Davey
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Delayed allatectomy and feeding in phormia regina (MEIG.): Effects on follicular development

Journal of Experimental Zoology, 1975
AbstractA delay in feeding a protein meal to the female blowfly following allatectomy results in inhibition of follicular development in the previtellogenic stage. On the other hand, a protein meal given immediately after the operation permits 55% of the flies to deposit yolk in their oocytes.
A M, Mjeni, P E, Morrison
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Effect of allatectomy on ecdysteroid-dependent development of Rhodnius prolixus larvae

Journal of Insect Physiology, 1987
Abstract the regulation of haemolymph titres of ecdysteroids during larval development of the bloodsucking bug, Rhodnius prolixus was studied. Corpus allatum ablation in 4th-instar larvae 1 day after feeding was reflected in an increase of the intermoult period and in a high level of ecdysial arrest.
Eloi S Garcia, AndréF Furtado, Patricia de Azambuja   +2 more
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Persistence of phonotaxis in females of four species of crickets following allatectomy

Journal of Comparative Physiology A, 1992
The role of Juvenile Hormone III in phonotaxis, mating behavior and egg production of cricket females from Gryllus campestris, Gryllus bimaculatus, Teleogryllus commodus, and Acheta domesticus was investigated. 1. Phonotaxis of crickets was measured on a Kramer spherical treadmill by means of an infrared system which allowed free walking at any ...
Loher, W., Weber, T., Rembold, H., Huber, F.   +3 more
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Effect of allatectomy upon lipid metabolism of the female moth of Spodoptera littoralis Boisd

Zeitschrift f�r Vergleichende Physiologie, 1970
1. Allatectomy in newly-ecdysed last instar (6th instar) larvae of Spodoptera littoralis Boisduval led to a high accumulation of a more saturated fat in female moths obtained. 2. Phospholipids and triglycerides were tremendously decreased apparently due to the impairment of oogenesis. 3.
M. T. El-Ibrashy, I. Z. Boctor
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The mechanism of compensation in juvenile hormone synthesis following unilateral allatectomy in Diploptera punctata

Journal of Insect Physiology, 1981
Abstract Following unilateral allatectomy in the viviparous cockroach, Diploptera punctata , the remaining corpus allatum (CA) can synthesize juvenile hormone (JH) at rates equal to that of a pair of control CA. A single CA undergoes changes in volume and cell number similar in magnitude to those occurring during the normal cycle of JH synthesis ...
Catharine M. Szibbo, Stephen S. Tobe
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The effects of allatectomy and ovariectomy on haemolymph proteins and lipid mobilization in Locusta

Journal of Insect Physiology, 1980
Abstract After ovariectomy the concentrations of diacylglycerol and protein in the haemolymph increase markedly. The increased diacylglycerol is associated with increased quantities of the ‘heparin-precipitable’ protein (lipoprotein A) that carries diacylglycerol in the blood of normal resting locusts. After the injection of adipokinetic hormone (AKH)
Mwangi, R.W., Goldsworthy, G.J.
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