Juvenile hormone-controlled vitellogenin cycles in Dysdercus intermedius (Heteroptera)

Identification, purification, and partial characterization of vitellin from the eggs of Eurygaster integriceps putton (heteroptera, pentatomidae)

“…This result is similar to the findings of Kelly and Telfer (1977) and Rankin and Jaeckl (1980) for Oncopelfus fasciatus and Dittmann et al (1985) for Dysdercus infermeddius; although both the hemipteran insects contain two different female-specific protein, no evidence about the existence of two vitellins was found. In contrast, two electrophoretically dif-FRACTION NUMBER Fig.…”

“…The red cotton bug major yolk protein has two major subunits of 180 kDa and 175 kDa, which proved to be female specific, and additional bands in the 210 kDa to 56 kDa range (Dittmann et al, 1985). The two main vitellogenic polypeptides of OncopeEtus fusciutus of 200 kDa and 170 kDa are not found in the yolk of mature eggs, which in turn contains five major polypeptides with molecular masses from 93 kDa to 40 kDa (Martinez and Garcera, 1987).…”

Hormonal controls on reproduction in female heteroptera

“…Allatectomy has been shown to halt or severely retard egg development in O. fasciatus (Johansson, 1958), Dysdercus cingulatus , Triatoma infestans (Mundall and Engelmann, 1977), Dindymus versicolor (Friedel, 1974), Dysdercus intermedius (Dittman et al, 1985), and Dysdercus koenigii (Bhola et al, 1988). It is also well established that juvenile hormone (JH) acts on a variety of tissues, including the fat body, for the control of vitellogenin synthesis (Coles, 1965;Mundall and Engelmann, 1977), the follicle cells for the control of access of vitellogenin to the oocyte (Davey, 1993a), the oocyte for the control of vitellogenin uptake (Wang and Davey, 1992), and the nervous system for the control of migratory flight in O. fasciatus (Rankin and Riddiford, 1978).…”

Effects of precocene II on female‐specific hemolymph polypeptides in Oncopeltus fasciatus

“…In Heteroptera, evidence from experiments with allatectomized females treated with JH suggests that vitellogenin synthesis is regulated by JH in Dysdercus intermedius [4] and Triatomu protructu [5]. Synthesis of vitellogenin could also be stimulated in males of Rhodnius proEixus with the JH analog methoprene [6].…”

“…Juvenile hormone (JH) is necessary for egg maturation in most insects; however, its involvement in reproduction seems to vary from species to species, and different control mechanisms of oogenesis have been proposed [l-31. In Heteroptera, evidence from experiments with allatectomized females treated with JH suggests that vitellogenin synthesis is regulated by JH in Dysdercus intermedius [4] and Triatomu protructu [5]. Synthesis of vitellogenin could also be stimulated in males of Rhodnius proEixus with the JH analog methoprene [6].…”