Adipokinetic hormones and lipoprotein interconversions during locust flight

During prolonged night, locusts predominantly utilize lipids for energy generation. Lipid stores are mainly located in the fat body. Flight is accompanied by release of adipokinetic hormones from the corpora cardiaca. Under the influence of these hormones, fat body triacylglycerol is converted to di...

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Bibliographic Details
Published inInsect science and its application Vol. 12; no. 1/3; pp. 279 - 286
Main Author Beenakkers, A.M.T
Format Journal Article
LanguageEnglish
Published 01.06.1991
Subjects
adipokinetic hormones
flight
lipid metabolism
lipoproteins
literature reviews
Locusta migratoria
Schistocerca gregaria
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Summary:During prolonged night, locusts predominantly utilize lipids for energy generation. Lipid stores are mainly located in the fat body. Flight is accompanied by release of adipokinetic hormones from the corpora cardiaca. Under the influence of these hormones, fat body triacylglycerol is converted to diacylglycerol, which is released into the haemolymph. This release requires the presence of specific lipoproteins. The lipid mobilizing effect of adipokinetic hormone on the fat body is attended by the association of a high density lipophorin and a non-lipid containing protein, both already present in the haemolymph, and the increased amount of released lipid to form a new lipoprotein, low density lipophorin. Upon delivery of the lipid to the flight muscles, participating proteins dissociate again and can be reused for lipid uptake at the fat body (lipoprotein shuttle system). The flight-specific metabolic systems could be starting-points for new devices in control strategies.
ISSN:0191-9040
DOI:10.1017/S1742758400020804