title: Simultaneous determination of juvenile hormone and ecdysteroid titers in the hemolymph of bumblebee prepupae (Bombus hypnorum and B. terrestris).
abstract: By means of radioimmunoassays the titer of juvenile hormone and ecdysteroids in the hemolymph was simultaneously determined in single prepupae throughout prepupal development. The concentrations of both hormones increase and show a peak, thereafter the titers fall sharply at larval/pupal ecdysis. Caste-specific differences in the time sequence of titer changes and in the concentration of JH are discussed.
mesh_terms: D000818:Animals; D001516:Bees / Q000254:growth & development / Q000378:metabolism*; D026461:Ecdysteroids; D006458:Hemolymph / Q000378:metabolism*; D006608:Hierarchy, Social; D007447:Invertebrate Hormones / Q000097:blood*; D007605:Juvenile Hormones / Q000097:blood*; D007814:Larva / Q000378:metabolism; D011679:Pupa / Q000378:metabolism; D013045:Species Specificity; D013997:Time Factors
chemical_list: D026461:Ecdysteroids; D007447:Invertebrate Hormones; D007605:Juvenile Hormones