Photoperiodic induction of pupal diapause in the flesh fly,Sarcophaga crassipalpis: embryonic sensitivity

Gnagey, A.L.; Denlinger, David L.

doi:10.1007/bf00683221

Cited by 43 publications

(10 citation statements)

References 16 publications

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“…As demonstrated in many insects, the brains of diapausing pupae appear quite inactive. Key enzymes and metabolites that are abundant in an active brain during the period of intensive development, such as acetyl cholinesterase, cyclic nucleotides and octopamine, are only present in very small amounts [21–26]. Therefore, it is reasonable to expect that these factors control brain neurosecretory activity, although important regulatory sites are likely to be restricted to only a few neurosecretory cells; one of the lateral neurosecretory cells has been identified as the source of prothoracicotropic hormone (PTTH) by Agui et al [27].…”

Section: Discussionmentioning

confidence: 99%

Role of dopamine at the onset of pupal diapause in the cabbage armyworm Mamestra brassicae

Noguchi

Hayakawa

1997

FEBS Letters

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Experiments were conducted to examine the relationship between an onset of diapause and dopamine (DA) content in the cabbage armyworm Mamestra brassicae during pupation. The DA levels were significantly higher in haemolymph, integument and brain-central nervous system of diapausedestined pupae than in non-diapause-destined pupae. The elevated level of the integumental DA content was demonstrated to be due to an increase in dopa decarboxylase activity in diapausing pupal integuments through an enhancement of transcript levels of this enzyme. Elevation of the DA level accomplished by feeding L-DOPA to last instar larvae induced a diapause-like state in more than 50% of the pupae under long daylengths.

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Section: Discussionmentioning

confidence: 99%

Role of dopamine at the onset of pupal diapause in the cabbage armyworm Mamestra brassicae

Noguchi

Hayakawa

1997

FEBS Letters

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“…Early observations with S. argyrostoma show that larvae are unable to distinguish 12 h of red light (>600 nm) from 18 h of red light per 24 h. The spectral sensitivity for the photoperiodic regulation of diapause in this species does not extend into these longer wavelengths (Saunders, 1973) as it does in N. vitripennis. A later test, with S. crassipalpis , shows that photosensitivity in the early part of the night is restricted to shorter wavelengths (green, approximately 540 nm) (Gnagey & Denlinger, 1984). Full action spectra for light breaks positioned both early and late in the scotophase, however, were then conducted with S. similis (Goto & Numata, 2009) in experiments exposing wandering larvae of S. similis to cycles of LD 12 : 12 h with a 2‐h pulse of monochromatic light positioned either early in the night (at point A) or late in the night (at point B).…”

Section: Photoreception In Flesh Flies (Sarcophaga Spp)mentioning

confidence: 99%

Insect photoperiodism: seeing the light

Saunders

2012

Physiological Entomology

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Abstract. This review examines the spectral sensitivities of photoperiodic responses in insects and mites in relation to circadian-based models for the photoperiodic clock. It concludes that there are probably a number of different photoreceptors at both the organ and molecular levels. These latter probably fall into two classes: (i) a blue-light sensitive photoreceptor and (ii) a range of opsins (i.e. opsin proteins conjugated with a vitamin A based pigment) absorbing light at a range of wavelengths. In flesh flies (Sarcophaga spp. and possibly other higher Diptera), which are considered to exemplify the 'external coincidence' model, entrainment of the photoperiodic oscillator probably involves a blue-light photoreceptor of Drosophilatype CRYPTOCHROME (CRY1) absorbing maximally at approximately 470 nm, whereas opsins absorbing at longer wavelengths may be involved in the photoinductive process (diapause/nondiapause regulation) that occurs when dawn light coincides with the photo-inducible phase. In the parasitic wasp Nasonia vitripennis, on the other hand, a species that lacks CRY1 but expresses the nonphotosensitive 'mammalian-type' CRY2, and is considered to exemplify 'internal coincidence', entrainment of the dawn and dusk oscillators may involve opsin-based photoreceptors absorbing light at longer wavelengths as far as the red end of the spectrum. In the Lepidoptera, which express both CRY1 and CRY2, properties of both external and internal coincidence may be evident. The presence or absence of cry1 in the genome may thus emerge as a key to the photoperiodic mechanism on its light input pathway.

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“…In flesh flies ofthe genus Sdrcophaga, exposure ofembryos and larvae to short and long (Fraenkel and Hsiao, 1968;Denlinger, 1971; Saunders, 1971;Ohtaki and Takahashi, 1972;Vinogradova 1976;Kurahashi and Ohtaki, 1979;Gnagey and Denlinger, 1984). In Sdrcophaga buUata, destination for diapause can be restored in a subsequent generation only by intervening generations reared fbr non-diapause under long days (Henrich and Denlinger, 1982).…”

Section: Introductionmentioning

confidence: 99%

Pupal diapause induction in larvae destined for non-diapause of the flesh fly, Boettcherisca peregrina : Diptera : Sarcophagidae

Moribayashi¹,

Hiraoka

Kurahashi³

et al. 2002

Jap. J. Sanit. Zool.

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The JapanSociety ofMedical Entomology and Zoology [Med.Entomol.Zool.VbL53 SuppL2 p279-288 2002] Pupal diapa"se induction in larvae destined for (Kurahashi and Othaki, 1989). However, the fly is expanding its distribution in and around the India-Australian area and the northern temperate areas ofAsia including Japan (Kano et al., 1999; Kurahashi and Kano, 1984), by developing a diapause mechanism (Ohtaki and Takahashi, 1972; Moribayashi et al., 2001 In flesh flies ofthe genus Sdrcophaga, exposure ofembryos and larvae to short and long NII-Electronic MbraryThe Japan Society of Medical Entomology and Zoology NII-Electronic Library Service

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Photoperiodic induction of pupal diapause in the flesh fly,Sarcophaga crassipalpis: embryonic sensitivity

Cited by 43 publications

References 16 publications

Role of dopamine at the onset of pupal diapause in the cabbage armyworm Mamestra brassicae

Role of dopamine at the onset of pupal diapause in the cabbage armyworm Mamestra brassicae

Insect photoperiodism: seeing the light

Pupal diapause induction in larvae destined for non-diapause of the flesh fly, Boettcherisca peregrina : Diptera : Sarcophagidae

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