Changes in ecdysone content during postembryonic development of the wax moth, Galleria mellonella: The role of the ovary

Bollenbacher, Walter E.; Zvenko, H. L.; Kumaran, A. Krishna; Gilbert, Lawrence I.

doi:10.1016/0016-6480(78)90208-3

Cited by 112 publications

(22 citation statements)

References 28 publications

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“…This is consistent with the reports that every developmental stage of the wax moth examined, contained a mixture of 27-carbon ecdysteroids (Bollenbacher et al, 1978;Hsiao and Hsiao, 1979;Smith and Bollenbacher, 1985) (Svoboda and Robbins, 1971;Chippendale and Reddy, 1973;Al-Azzi and Hopkins, 1982), and in another study, shown not to harm honey bees (Svoboda et al, 1987). In addition, one of the compounds, N, Ndimethyldodecanamine (designated was previously shown to have promise as an antifungal agent directed at chalkbrood …”

Section: Resultssupporting

confidence: 76%

Comparison of the dietary and tissue sterols of the greater wax moth, Galleria mellonella (L)

1997

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Summary — The neutral sterols of the greater wax moth Galleria mellonella were determined and compared to the sterols isolated from the used brood comb upon which the insects were reared. Analysis by gas-liquid chromatography and mass spectrometry revealed that used brood comb contained primarily 28-and 29-carbon sterols, with cholesterol accounting for less than 1% of the total sterols detected. This differed considerably from the insect, where cholesterol comprised over 85% of the tissue sterols. These results indicate the wax moth is able to convert dietary 24-alkylsterols to cholesterol. The potential for using inhibitors of sterol metabolism to control G mellonella is discussed.

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Section: Resultssupporting

confidence: 76%

Comparison of the dietary and tissue sterols of the greater wax moth, Galleria mellonella (L)

1997

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“…Treatment with a JHA acts either via manipulation of the ecdysteroid titer or indirectly as a result of JHA effects on the stage of development of the ovary [12,13]. The exact mechanism of this regulation is still to be elucidated.…”

Section: Discussionmentioning

confidence: 97%

Effect of a juvenile hormone analogue on the life span, egg laying, and ecdysteroid titer of virgin Ephestia cautella females

Shaaya

Calderon

Pisarev

et al. 1991

Arch Insect Biochem Physiol

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Mated females of the tropical warehouse moth, Ephestia cautella, start laying eggs shortly after adult emergence. All eggs are laid within 4 days and the adult's total life span is 5 to 6 days. If mating i s prevented, egg laying is drastically delayed and the life span is extended to approximately 10 to 11 days. Virgin females lay fewer eggs than mated insects. If the juvenile hormone analogue methoprene is applied topically (100 ng/pupa) 2 to 3 days prior to adult emergence, the number of eggs per virgin female increases and the life span is reduced, as compared with nontreated virgins, and reaches values similar to control (mated) females. Changes in the ecdysteroid titer of females are related to egg laying. The concentrations increase and reach a maximum before most of the eggs are laid. Accordingly, the peak maximum is delayed in virgins as compared with mated females. This delay i s prevented after application of methoprene. Mated and virgin females have lower ecdysteroid levels than treated virgins. In contrast to mated females, males have much lower ecdysteroid levels throughout their adult life.

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“…Ecdysteroid levels in the hemolymph of G. mellonella larvae have been investigated principally during the last instar (Hsiao and Hsiao, 1977;Bollenbacher et al, 1978;Sehnal et al, 1981;Plantevin et al, 1984;Cymborowski et al, 1989). Sehnal et al (1986) detected 300 ng ecdysteroid equivalents per gram of body weight in the penultimate instar and a threefold higher peak in the last instar larvae (L7).…”

Section: Discussionmentioning

confidence: 99%

Endocrine alteration and precocious premetamorphic behaviors in the greater wax moth larvae,Galleria mellonella, parasitized by an endoparasitoid,Apanteles galleriae

Wani

Iwabuchi

Agui

et al. 1997

Arch. Insect Biochem. Physiol.

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Parasitization of Galleria mellonella (Lepidoptera: Pyralididae) larvae by a larval endoparasitoid Apanteles galleriae (Hymenoptera: Braconidae) leads to the precocious expression of premetamorphic behavior in the sixth (normally penultimate) instar host larvae prior to the parasitoid's emergence. We investigated the role of parasitization with A. galleriae on the alteration of development and/or behavior of its host. The ecdysteroid titer in the hemolymph of parasitized sixth instar larvae (the last instar of parasitized larvae) was higher than that of unparasitized ones, and the high ecdysteroid concentrations induced premetamorphic behaviors such as wandering and cocoon spinning. However, the epidermis of the parasitized larvae was not pupally committed through this stage. The activity of JH esterase in the parasitized larvae remained low, and application of a JH analogue to these larvae caused the production of a larval‐type cocoon. These facts suggest that the parasitization by A. galleriae induces precocious premetamorphic behaviors of G. mellonella larvae by changing host endocrine conditions without causing the typical larval‐pupal metamorphosis. Arch. Insect Biochem. Physiol. 34:257–273, 1997. © 1997 Wiley‐Liss, Inc.

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Changes in ecdysone content during postembryonic development of the wax moth, Galleria mellonella: The role of the ovary

Cited by 112 publications

References 28 publications

Comparison of the dietary and tissue sterols of the greater wax moth, Galleria mellonella (L)

Comparison of the dietary and tissue sterols of the greater wax moth, Galleria mellonella (L)

Effect of a juvenile hormone analogue on the life span, egg laying, and ecdysteroid titer of virgin Ephestia cautella females

Endocrine alteration and precocious premetamorphic behaviors in the greater wax moth larvae,Galleria mellonella, parasitized by an endoparasitoid,Apanteles galleriae

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