Results 111 to 120 of about 179 (132)
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Allatectomy and sexual receptivity in females of Schistocerca gregaria
Journal of Insect Physiology, 1977Abstract 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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Effect of allatectomy upon lipid metabolism of the female moth of Spodoptera littoralis Boisd
Zeitschrift f�r Vergleichende Physiologie, 19701. 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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Allatectomy and food selection in males of Locusta
Journal of Insect Physiology, 1975Abstract Removing the corpora allata from young males of Locusta does not alter the overall amount of food they consume or the quantity of faeces they produce. However, allatectomized males eat less fresh grass and more dry bran than the control males. This observation is discussed in relation to the maturation process and other events in the adult
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Effects of allatectomy and ovariectomy on cuticular hydrocarbons inCalliphora vomitoria(diptera)
Archives of Insect Biochemistry and Physiology, 1994AbstractThe relationships between female attractiveness, cuticular hydrocarbons, and levels of juvenile hormone and ecdysteroids were studied inCalliphora vomitoria. The experiments were conducted at 48 and 72 h post‐emergence, according to attractiveness appearance and increase. The 48‐h‐old allatectomized females were less attractive than the control
Marie Trabalon +5 more
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The effect of allatectomy and photoperiod on the supercooling point in Pyrrhocoris apterus adults
Physiological Entomology, 1992Abstract Adults of Pyrrhocoris apterus (L.) (Heteroptera: Pyrrhocoridae) reared at 26°C had a considerably lower supercooling point (SCP) in diapause‐inducing (LD 12:12 h) than in diapause‐inhibiting (LD 18:6 h) photoperiodic regimes.
M. HODKOVA +4 more
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Journal of Insect Physiology, 1984
Abstract The anti-allatin substance, 7-ethoxy-precocene II (= “precocene III”) was topically applied to eggs of Locusta migratoria migratorioides with fully grown embryos in stage XX (about 64 ± 4% of the whole period of egg development). A day after precocene application the eggs were washed for 10–15 s in acetone and then transferred to clean ...
N. Aboulafia-Baginsky +2 more
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Abstract The anti-allatin substance, 7-ethoxy-precocene II (= “precocene III”) was topically applied to eggs of Locusta migratoria migratorioides with fully grown embryos in stage XX (about 64 ± 4% of the whole period of egg development). A day after precocene application the eggs were washed for 10–15 s in acetone and then transferred to clean ...
N. Aboulafia-Baginsky +2 more
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Journal of Insect Physiology, 1972
Abstract The capacity for enforced activity in response to electrical stimulus and circadian locomotor activity were recorded for adult male Blaberus discoidalis after long-term cardiacectomy-allatectomy (CC − +CA − ). CC − +CA − cockroaches showed longer periods of exhaustion during shock stimulated activity than either normal or CA − animals ...
Merle Shepard, Larry L. Keeley
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Abstract The capacity for enforced activity in response to electrical stimulus and circadian locomotor activity were recorded for adult male Blaberus discoidalis after long-term cardiacectomy-allatectomy (CC − +CA − ). CC − +CA − cockroaches showed longer periods of exhaustion during shock stimulated activity than either normal or CA − animals ...
Merle Shepard, Larry L. Keeley
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Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1977
1. Kinetic properties of adult Phormia fat body glycogen synthetase were studied and compared to other animals. The KM for UDPG is 2.82 mM, decreasing to 0.58 mM in the presence of G-6-P. 2. The specific activity of fat body glycogen synthetase shows a reduction of 30% within 2 days after allatectomy. 3.
A C, Chen, S, Friedman
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1. Kinetic properties of adult Phormia fat body glycogen synthetase were studied and compared to other animals. The KM for UDPG is 2.82 mM, decreasing to 0.58 mM in the presence of G-6-P. 2. The specific activity of fat body glycogen synthetase shows a reduction of 30% within 2 days after allatectomy. 3.
A C, Chen, S, Friedman
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International Journal of Invertebrate Reproduction, 1983
An analysis of the incorporation of [3H]leucine into the proteins of the spermathecae in Rhodnius prolixus revealed a gradual increase from the day of emergence until the animals were fed on the tenth day of adult life, when there was a dramatic drop to the original level.
J. E. Kuster, K. G. Davey
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An analysis of the incorporation of [3H]leucine into the proteins of the spermathecae in Rhodnius prolixus revealed a gradual increase from the day of emergence until the animals were fed on the tenth day of adult life, when there was a dramatic drop to the original level.
J. E. Kuster, K. G. Davey
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Comptes rendus de l'Academie des sciences. Serie III, Sciences de la vie, 1989
To continuously monitor ovipositor movements a new actograph was devised; it was composed of a radioelement glued at the ventral tip of the ovipositor, a scintillation probe to detect ovipositor movements and a microcomputer to store and process data. Immature and mature virgin females were able to perform ovipositor movements.
M, Renucci +3 more
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To continuously monitor ovipositor movements a new actograph was devised; it was composed of a radioelement glued at the ventral tip of the ovipositor, a scintillation probe to detect ovipositor movements and a microcomputer to store and process data. Immature and mature virgin females were able to perform ovipositor movements.
M, Renucci +3 more
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