A role for ecdysteroids in the phase polymorphism of the desert locust.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077395%3A_____%2F03%3A60033029" target="_blank" >RIV/60077395:_____/03:60033029 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/03:00008618
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
A role for ecdysteroids in the phase polymorphism of the desert locust.
Original language description
Locusts show density-dependent continuous phase polymorphism; they appear in two forms or phases, gregarious and solitary, and there is a continuous range of intermediates between the extreme phases. Although earlier studies showed that there are no major phase-dependent differences in the titres of ecdysteroid in the haemolymph of desert locusts, Schistocerca gregaria , recent studies showed some minor differences in the timing of the main peak of ecdysteroids. In crowded penultimate- and last-instar hoppers, peak titres were lower but longer-lasting, whereas in isolated hoppers they were higher but of shorter duration. The major component of the haemolymph peak of ecdysteroid was 20-hydroxyecdysone in both isolated and crowded hoppers, but differences were found in the relative amounts of two minor components (makisterone A-like compound and highly polar products). In S. gregaria adults, the regression of the prothoracic glands was irregular and subject to high individual variations,
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
ED - Physiology
OECD FORD branch
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Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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