Temperature and chiasma formation in Schistocerca gregaria
نویسندگان
چکیده
منابع مشابه
Ecdysone 20-mono-oxygenase in the desert locust, Schistocerca gregaria.
The enzyme catalysing the hydroxylation of ecdysone to 20-hydroxyecdysone, ecdysone 20-mono-oxygenase (EC 1.14.99.22), was investigated in the Malpighian tubules of fifth-instar locusts, Schistocerca gregaria. Enzyme activity was optimal at 35 degrees C and pH 6.8-8.0. Under these conditions the mono-oxygenase exhibited an apparent Km for ecdysone of 7.1 X 10(-7) M, a maximal specific activity ...
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Here we provide the first formal quantitative analysis of dynamic stability in a flying animal. By measuring the longitudinal static stability derivatives and mass distribution of desert locusts Schistocerca gregaria, we find that their static stability and static control responses are insufficient to provide asymptotic longitudinal dynamic stability unless they are sensitive to pitch attitude ...
متن کاملSulfakinins reduce food intake in the desert locust, Schistocerca gregaria.
In vertebrates, the peptides cholecystokinin (CCK), neuropeptide Y, galanin, and bombesin are known to be involved in the control of food intake. We report here that insect sulfakinins, peptides which display substantial sequence similarities with the vertebrate gastrin/CCK peptide family, significantly inhibit food uptake in fifth instar nymphs of the locust, Schistocerca gregaria. Upon inject...
متن کاملAssociative olfactory learning in the desert locust, Schistocerca gregaria.
Locusts can learn associations between olfactory stimuli and food rewards, and use the acquired memories to choose between foods according to their nutrient requirements. They are a model system for both the study of olfactory coding and insect nutritional regulation. Previous studies have used operant paradigms for conditioning freely moving locusts, restricting the study of the neural mechani...
متن کاملBehavioral evidence of polarization vision in the locust Schistocerca gregaria
Many insects are able to detect the polarization pattern of the blue sky and use this capability for spatial orientation (Wehner R 1984, Annu. Rev. Entomol. 29, 277-298; Wehner R, Michel B and Antonsen P 1996, J. Exp. Biol. 199, 129-140). Ommatidia specialized to detect skylight polarization are confined to a small dorsal rim area (DRA) of the compound eye. The desert locust Schistocerca gregar...
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ژورنال
عنوان ژورنال: Heredity
سال: 1963
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1963.6