Effect of mating on Monarch butterfly oogenesis

Herman, William S.; Barker, John F.

doi:10.1007/bf01946578

Cited by 30 publications

(24 citation statements)

References 5 publications

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“…JH production in vitro by a pair of corpora allata (CA) (n = 2) or accessory sex glands (ASG) (n = 3) from 3-day-old virgin male H. virescens. man and Barker, 1977). Such a mating-induced surge in egg development is correlated similarly with JH titers in H. virescens .…”

Section: Discussionmentioning

confidence: 64%

Mating inHeliothis virescens: Transfer of juvenile hormone during copulation by male to female and stimulation of biosynthesis of endogenous juvenile hormone

Park

Shu

Ramaswamy

et al. 1998

Arch. Insect Biochem. Physiol.

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Studies were undertaken to determine whether adult males of Heliothis virescens transfer juvenile hormone (JH) to females during copulation, and an in vitro radiochemical assay was used to determine whether mating causes an allatotropic effect, i.e., stimulation of JH biosynthesis by corpora allata (CA). In vitro, CA from 3‐day‐old mated females synthesized and released approximately 2.5 times total JH as that of CA from comparably aged virgin females. Of the homologues, JH II exhibited significant increase in mated females; JH I also increased but not significantly. JH III remained similar to that of virgin females. This is the first demonstration of an allatotropic effect of mating in moths. In contrast to the female, CA of virgin males did not produce any JH, but accessory sex glands (ASG) in 3‐day‐old males synthesized small amounts of JH. Immediately after adult emergence, male ASG contained approximately 1.5 ng JH I and II, which increased by 12 h after emergence and remained at this high level up to 54 h after emergence. JH III was barely detected in ASG. JH in ASG of mated male immediately after uncoupling was depleted almost completely, and 24 h later recovered to levels comparable to that of 54‐h‐old virgin male. Virgin female bursa copulatrix did not contain any JH, but mated female bursa, immediately after uncoupling, had JH at levels comparable to that observed in virgin male ASG. By 6 h after uncoupling, JH levels decreased dramatically in mated female bursa. These data suggest the transfer of JH to females by the male. Arch. Insect Biochem. Physiol. 38:100–107, 1998. © 1998 Wiley‐Liss, Inc.

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Section: Discussionmentioning

confidence: 64%

Mating inHeliothis virescens: Transfer of juvenile hormone during copulation by male to female and stimulation of biosynthesis of endogenous juvenile hormone

Park

Shu

Ramaswamy

et al. 1998

Arch. Insect Biochem. Physiol.

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“…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%

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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“…Data to support the first two mechanisms may be gleaned from studies of Herman and Barker (1977), Loher et al (1987), and Venkatesh et al (1988), described above. Loher et al (1987) speculated from results of experiments transecting the ventral nerve cord and nerves to the ovaries that the presence of eggs in unmated female ovaries may send an allatostatic signal to the CA to stop producing JH, while in mated females provided with an oviposition substrate, as the eggs are being laid, the ovaries devoid of eggs may lack this allatostatic factor and, thus, the CA continue to produce JH.…”

Section: Egg Maturation and Migration Mating Adult Food And Oviposmentioning

confidence: 94%

“…Among the Lepidoptera, although numerous species are migratory, little is known of the interrelationships between JH, reproduction, and migration (McNeil et al, 1995). In the best-known migrant lepidopteran, the monarch butterfly, interactions between seasonality, flight, JH, JH-esterase, and reproduction have been deciphered (Herman and Barker, 1977;Herman, 1981, 1983;Lessman et al, 1989). In this species, ovarial maturation and migration are mutually exclusive (Lessman and Herman, 1983).…”

Section: Egg Maturation and Migration Mating Adult Food And Oviposmentioning

confidence: 97%

“…2), ensuring increased longevity (Willers et al, 1987); and a resurgence in egg maturation occurs only after mating. Herman and Barker (1977) showed that the CA become inactive in monarch butterfly females that remain virgin for longer than 10 days after emergence and egg development is arrested; mating reactivates the CA, with a concomitant increase in egg maturation. Venkatesh et al (1988) determined that high levels of hemolymph JH-esterase, the primary JH degradative mechanism in insects (Hammock, 1985), persist throughout the life of a virgin female, while in mated females they measured a 95% reduction in hemolymph JH-esterase levels in Trichoplusia ni, resulting in a significant increase in egg maturation in mated females.…”

Section: Egg Maturation and Migration Mating Adult Food And Oviposmentioning

confidence: 98%

See 1 more Smart Citation

Dynamics of juvenile hormone-mediated gonadotropism in the lepidoptera

Ramaswamy

Shu

Park

et al. 1997

Arch. Insect Biochem. Physiol.

139

121

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Effect of mating on Monarch butterfly oogenesis

Cited by 30 publications

References 5 publications

Mating inHeliothis virescens: Transfer of juvenile hormone during copulation by male to female and stimulation of biosynthesis of endogenous juvenile hormone

Mating inHeliothis virescens: Transfer of juvenile hormone during copulation by male to female and stimulation of biosynthesis of endogenous juvenile hormone

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

Dynamics of juvenile hormone-mediated gonadotropism in the lepidoptera

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