Results 141 to 150 of about 2,551 (175)
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Neurobiology of polarization vision in the locustSchistocerca gregaria
Acta Biologica Hungarica, 2004The polarization pattern of the blue sky serves as an important reference for spatial orientation in insects. To understand the neural mechanisms involved in sky compass orientation we have analyzed the polarization vision system in the locust Schistocerca gregaria.
Homberg, U. +7 more
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Cuticular sclerotization in larval and adult locusts, Schistocerca gregaria
Journal of Insect Physiology, 1974Abstract The sclerotization of both larval and adult cuticle from the desert locust, Schistocerca gregaria , has been studied by measuring the incorporation of radioactive dopamine and N-acetyldopamine into the cuticle. The results are compared with the degree of sclerotization of the cuticle and the amount of sclerotizing enzyme present.
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A study of tolerance of ingested tannin in Schistocerca gregaria
Journal of Insect Physiology, 1980Abstract A study has been made on the effects of ingestion of tannic acid on growth and development of Schistocerca gregaria. No deleterious effects were found on digestion or utilisation of food, even when food protein levels were very low. At high concentrations consumption rates were relatively low over the first day, but this effect was not ...
E.A. Bernays, D.J. Chamberlain
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THE BODY TEMPERATURE OF THE DESERT LOCUST (SCHISTOCERCA GREGARIA)
Entomologia Experimentalis et Applicata, 1966The equilibrium body temperatures of hoppers (nymphs) of Schistocerca gregaria were studied in the field. The data obtained are here compared with theoretical estimates of the thermal balance resulting from the factors assumed to be concerned in heat loss and heat gain.In the field, the equilibrium body temperature of quiescent hoppers shaded from ...
W. J. STOWER, J. F. GRIFFITHS
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Transglycosylation in the desert locust, Schistocerca gregaria Forsk.
Journal of Insect Physiology, 1964Abstract The hydrolysis of maltose, sucrose, methyl α -glucopyranoside, cellobiose, and raffinose by a freeze-dried enzyme preparation of the foregut and midgut contents of the desert locust Schistocerca gregaria is accompanied by transglycosylation.
D.W. Payne, W.A.L. Evans
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Phase polymorphism in Schistocerca gregaria: Reproductive parameters
Journal of Insect Physiology, 1981Solitarious phase Schistocerca gregaria were selected according to the criterion of the occurrence of an extra stadium during larval development. The proportion of locusts undergoing an extra ecdysis increased within one generation of rearing under isolated conditions but it failed to reach 100% throughout an observation period encompassing six ...
H.S. Injeyan, S.S. Tobe
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Studies on the kynurenine-3-hydroxylase of Schistocerca gregaria
Insect Biochemistry, 1974Abstract The kynurenine-3-hydroxylase (E.C. 1.99.1.5) of different tissues of Schistocerca gregaria was studied. This enzyme was found only in the eyes and in the integument. Experiments on subcellular fractions of the epidermal cells showed that the enzyme is localized in the mitochondrial fraction (membranes?).
S. Pinamonti, G. Chiarelli-alvisi
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Gregarines: their Effect on the Growth of the Desert Locust (Schistocerca gregaria)
Nature, 1970ALL stages of the desert locust Schistocerca gregaria are infected with a eugregarine Gregarina garnhami1,2 (Fig. 1a). The morphology and life history of gregarines have been studied extensively, but little is known about the effects of gregarines on their invertebrate hosts.
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The control of chiasma distribution in the locust, Schistocerca gregaria (Forsk�l)
Chromosoma, 1973Chiasma distribution at diplotene in Schistocerca gregaria males can be taken to indicate the positions at which crossing over occurred prior to diplotene since chiasma terminalisation is entirely absent. Analysis of chiasma frequency and position leads to a model for the mechanism controlling distribution which has three main components.
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