Studies on the endocrine control of post-emergence ovarian maturation in Manduca sexta

Sroka, Paul; Gilbert, Lawrence I.

doi:10.1016/0022-1910(71)90088-6

Cited by 59 publications

(20 citation statements)

References 23 publications

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“…As has been found previously (Sroka & Gilbert, 1971;Nijhout & Riddiford, 1974), removal of the pupal CA prevented egg maturation in all the females described above. Females allatectomized as pupae, but then given methoprene just after adult eclosion, mated and laid eggs in the normal mated ovipositional pattern (Fig.…”

supporting

confidence: 84%

“…In Manduca (Sroka & Gilbert, 1971;Nijhout & Riddiford, 1974), as in Pieris (Benz, 1970;Karlinsky, 1977), Dunus plexippus (Herman & Barker, 1977;Lessmann et al, 1982) and Nymphalis antiopa (Herman & Bennett, 1975), oogenesis is dependent on the presence of the adult CA. In this species JH is only necessary for the final stages of egg maturation (Nijhout & Riddiford, 1974.…”

Section: Discussionmentioning

confidence: 99%

“…Although we have recently shown that in the saturniid moths Hyalophora cecropia and Antheraea polyphemus the corpora cardiaca are not necessary for calling and mated ovipositional behaviour (Sasaki et al, 1983), it was important to assess the role of these glands in Manduca, where egg maturation is dependent on the corpora allata (Sroka & Gilbert, 1971;Nijhout & Riddiford, 1974). The corpora allata (CA) or the corpora cardiaca (CC)-corpora d a t a complexes were removed from pupae 2 days after pupal ecdysis.…”

mentioning

confidence: 99%

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Regulation of reproductive behaviour and egg maturation in the tobacco hawk moth, Manduca sexta

Sasaki

Riddiford

1984

Physiological Entomology

107

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ABSTRACT. The virgin female tobacco hawk moth, Manduca sexta, flies during the early scotophase in an L,D 16:8 cycle at 24°C then begins 'calling' within 2 h. Mating lasts 3-4h. Oviposition occurs in the succeeding scotophases if a tobacco plant is present. The switch from virgin 'calling' behaviour to mated ovipositional behaviour is mediated by the presence of sperm and/or associated testicular fluids in the bursa copulatrix. The corpora allata, which are necessary for egg maturation in this species, are activated via the NCC I and I1 around the time of eclosion. Feeding increases the activity of the corpora allata in the virgin female (as judged by the number of eggs matured in 4 days) but mating brings about a further stimulation of the activity of the corpora allata. The stretching of the bursa copulatrix by the insertion of the spermatophore during mating is probably the trigger for this response. Continued neural input from the bursa copulatrix to the brain is necessary to maintain the increased activity of the corpora allata.

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confidence: 84%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Regulation of reproductive behaviour and egg maturation in the tobacco hawk moth, Manduca sexta

Sasaki

Riddiford

1984

Physiological Entomology

107

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“…7). a-Ecdysone is rapidly converted into fl-ecdysone in vivo (8)(9)(10) as well as in isolated abdomens (10 (14). After thorough rinsing in several changes of culture medium over a period of 3 hr, the glands were cultured in either Rose chambers (15) or sterile culture tubes.…”

mentioning

confidence: 99%

The Secretion of α-Ecdysone by the Prothoracic Glands of Manduca sexta In Vitro

King

Bollenbacher²,

Borst³

et al. 1974

Proc. Natl. Acad. Sci. U.S.A.

117

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Prothoracic glands of tobacco hornworm larvae cultured in vitro secrete into the culture medium a substance which was active in ecdysone bioassays and determined to be ecdysone-like by radioimmunoassay. The prothoracic glands appear to be the sole source of this substance. The material was identified as α-ecdysone by thin-layer, gas-liquid, and high-resolution liquid chromatography and mass spectrometry. No other active moulting principles were present in the medium. It appears that the prothoracic gland secretes a prohormone, α-ecdysone, which is subsequently converted into the active moulting hormone, β-ecdysone, in other insect tissues.

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“…In many insects, juvenile hormone (JH) regulates the biosynthesis and uptake of vitellogenin by the oöcytes. Among Lepidoptera, e.g., the tobacco hawkmoth, Manduca sexta L. (Sroka and Gilbert, 1971;Nijhout and Riddiford, 1974) and the large white butterfly Pieris brassica L. (Karlinsky, 1963 and1967;Benz, 1969), juvenile hormone is required for full development of the ovaries in adults, whereas in the silkworm Bombyx mori L. (Chatani and Ohnishi, 1976), giant silk moth, Hyalophora cecropia (L.) (Williams, 1952;Pan, 1977), ailanthus silkmoth, Samia cynthia (Drury) (Takahashi and Mizohata, 1975) and ricemoth, Corcyra cephalonica (Stainton) (Deb and Chakarvorty, 1981) ovarian development occurs as part of adult development initiated by ecdysteroid. Juvenile hormone or juvenile hormone analogue (JHA) application at a critical period, however, induces abnormal development of the ovary as well as other tissues, although juvenile hormone analogues can replace natural juvenile hormone in regulating oöcyte maturation (Nomura, 1994).…”

Section: Effects Of Chlorfluazurn On Female Reproductive System Of Spmentioning

confidence: 99%

Chlorfluazuron as Reproductive Inhibitor

Perveen¹

2012

Insecticides - Pest Engineering

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Studies on the endocrine control of post-emergence ovarian maturation in Manduca sexta

Cited by 59 publications

References 23 publications

Regulation of reproductive behaviour and egg maturation in the tobacco hawk moth, Manduca sexta

Regulation of reproductive behaviour and egg maturation in the tobacco hawk moth, Manduca sexta

The Secretion of α-Ecdysone by the Prothoracic Glands of Manduca sexta In Vitro

Chlorfluazuron as Reproductive Inhibitor

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