Circadian Firing Activities of Neurosecretory Cells Releasing Pheromonotropic Neuropeptides in the Silkmoth, Bombyx mori

Tawata, Masaya; Ichikawa, Toshio

doi:10.2108/zsj.18.645

Cited by 15 publications

(4 citation statements)

References 27 publications

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“…We found that artificial light at night strongly reduced the total amount of sex pheromone produced by female M. brassicae , possibly through light inhibition of PBAN (Tawata & Ichikawa, ), the neuropeptide that regulates sex pheromone production (Raina et al ., ; Jacquin et al ., ). PBAN is produced in the suboesophageal ganglion, probably continuously, so that it accumulates during the photophase (Rafaeli, ), while its release from the corpus cardiacum into the haemolymph is regulated by a circadian clock (Rafaeli, ), and coincides with the daily rhythm of sex pheromone production in M. brassicae (Iglesias et al ., ).…”

Section: Discussionmentioning

confidence: 97%

“…Sex pheromone production in moths is regulated by pheromone biosynthesis activation neuropeptide (PBAN) (Raina et al ., ; Jacquin et al ., ). Mamestra brassicae sex pheromone production occurs at night (Noldus & Potting, ), and release of PBAN is regulated by light (Tawata & Ichikawa, ). Therefore, the production of sex pheromone may be affected by artificial lighting.…”

Section: Introductionmentioning

confidence: 99%

“…Mamestra brassicae sex pheromone production occurs at night (Noldus & Potting, 1990), and release of PBAN is regulated by light (Tawata & Waring and Townsend (2003). Ichikawa, 2001). Therefore, the production of sex pheromone may be affected by artificial lighting.…”

Section: Introductionmentioning

confidence: 99%

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Artificial night lighting disrupts sex pheromone in a noctuid moth

Geffen

Groot

Grunsven

et al. 2015

Ecological Entomology

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1. One major, yet poorly studied, change in the environment is the increase in nocturnal light pollution. Although this strongly alters the habitat of nocturnal species, the ecological consequences are poorly known. Moths are well known to be attracted to artificial light sources, but artificial light may affect them in other ways as well.2. In this study, female Mamestra brassicae moths were subjected to various types of low-intensity artificial night lighting with contrasting spectral compositions (green-rich, red-rich, warm white) or to a dark control treatment and the effects on their sex pheromone production and composition were tested.3. Artificial night lighting reduced sex pheromone production and altered the chemical composition of the pheromone blend, irrespective of spectral composition. Specifically, amounts of the main pheromone component Z11-16:Ac were reduced, while the deterring compounds Z9-14:Ac, Z9-16:Ac, and Z11-16:OH were increased relative to Z11-16:Ac when females were kept under artificial light. These changes may reduce the effectiveness of the sex pheromones, becoming less attractive for males. 4. These results show for the first time that artificial light at night affects processes that are involved in moth reproduction. The potential for mitigation through manipulation of the spectral composition of artificial light appears limited.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Artificial night lighting disrupts sex pheromone in a noctuid moth

Geffen

Groot

Grunsven

et al. 2015

Ecological Entomology

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“…The PBAN peptide is highly conserved across the entire Insecta and plays an equally conserved role in the regulation of pheromone biosynthesis (reviewed by Jurenka 2015 ). In some moth species, PBAN release and subsequent pheromone biosynthesis occur on a circadian basis (reviewed by Groot 2014 , Iglesias et al 1999 , Tawata and Ichikawa 2001 , Závodská et al 2009 ). This suggests that the pk/pban expressing neural circuitry in the GNG is ancestrally linked to circadian networks in the bran, likely facilitating the incorporation of the newly acquired hugin peptide into this regulatory network as observed in Drosophila .…”

Section: Evolutionary Significance Of Divergence Of Pk/pban Peptidesmentioning

confidence: 99%

Insect PRXamides: Evolutionary Divergence, Novelty, and Loss in a Conserved Neuropeptide System

Farris

2023

Journal of Insect Science

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The PRXamide neuropeptides have been described in both protostome and deuterostome species, including all major groups of the Panarthropoda. Best studied are the insect PRXamides consisting of three genes: pk/pban, capa, and eth, each encoding multiple short peptides that are cleaved post-translationally. Comparisons of genome and transcriptome sequences reveal that while retaining its fundamental ancestral organization, the products of the pk/pban gene have undergone significant change in the insect Order Diptera. Basal dipteran pk/pban genes are much like those of other holometabolous insects, while more crown species have lost two peptide coding sequences including the otherwise ubiquitous pheromone biosynthesis activating neuropeptide (PBAN). In the genomic model species Drosophila melanogaster, one of the remaining peptides (hugin) plays a potentially novel role in feeding and locomotor regulation tied to circadian rhythms. Comparison of peptide coding sequences of pk/pban across the Diptera pinpoints the acquisition or loss of the hugin and PBAN peptide sequences respectively, and provides clues to associated changes in life history, physiology, and/or behavior. Interestingly, the neural circuitry underlying pk/pban function is highly conserved across the insects regardless of the composition of the pk/pban gene. The rapid evolution and diversification of the Diptera provide many instances of adaptive novelties from genes to behavior that can be placed in the context of emerging selective pressures at key points in their phylogeny; further study of changing functional roles of pk/pban may then be facilitated by the high-resolution genetic tools available in Drosophila melanogaster.

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A Sexy Moth Model – The Molecular Basis of Sex Pheromone Biosynthesis in the Silkmoth Bombyx mori

Hull

Fónagy

2020

Entomology Monographs

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Circadian Firing Activities of Neurosecretory Cells Releasing Pheromonotropic Neuropeptides in the Silkmoth, Bombyx mori

Cited by 15 publications

References 27 publications

Artificial night lighting disrupts sex pheromone in a noctuid moth

Artificial night lighting disrupts sex pheromone in a noctuid moth

Insect PRXamides: Evolutionary Divergence, Novelty, and Loss in a Conserved Neuropeptide System

A Sexy Moth Model – The Molecular Basis of Sex Pheromone Biosynthesis in the Silkmoth Bombyx mori

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