Ecdysteroids and adult diapause in the Colorado potato beetle, Leptinotarsa decemlineata

Autor:	M. Peferoen, A. De Loof, T. Briers
Rok vydání:	1982
Předmět:	Ecdysteroid animal structures biology Physiology Ecdysterone Colorado potato beetle Diapause biology.organism_classification chemistry.chemical_compound chemistry Biochemistry Insect Science Hemolymph Botany Corpus allatum Leptinotarsa Ecology Evolution Behavior and Systematics Ecdysone
Zdroj:	Physiological Entomology. 7:379-386
ISSN:	1365-3032 0307-6962
DOI:	10.1111/j.1365-3032.1982.tb00313.x
Popis:	The difference in ecdysteroid activity in short-day (10-h photo-phase) and long-day (16-h photophase) Leptinotarsa decemlineata Say adults was characterized by high performance liquid chromatography, which revealed that for short-day beetles ecdysterone and ecdysone are the major constituents of the free ecdysteroids, whereas in long-day beetles products co-migrating with 2-deoxyecdysone and 2-deoxyecdysterone are just as abundant. Ecdysteroids were detected (15 ng/ml) only in the haemolymph of females. Ligation experiments showed that the induction of the diapause syndrome by inactivation of the corpora allata or the brain not only resulted in the formation of the typical diapause proteins but also in an increase of the ecdysteroid activity. It is suggested that adult diapause in L.decemlineata is regulated by a multifactorial system.
Databáze:	OpenAIRE
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