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• W4385264831 endingPage "1549" @default.
• W4385264831 startingPage "1525" @default.
• W4385264831 abstract "Insects from high latitudes spend the winter in a state of overwintering diapause, which is characterized by arrested reproduction, reduced food intake and metabolism, and increased life span. The main trigger to enter diapause is the decreasing day length in summer-autumn. It is thus assumed that the circadian clock acts as an internal sensor for measuring photoperiod and orchestrates appropriate seasonal changes in physiology and metabolism through various neurohormones. However, little is known about the neuronal organization of the circadian clock network and the neurosecretory system that controls diapause in high-latitude insects. We addressed this here by mapping the expression of clock proteins and neuropeptides/neurohormones in the high-latitude fly Drosophila littoralis. We found that the principal organization of both systems is similar to that in Drosophila melanogaster, but with some striking differences in neuropeptide expression levels and patterns. The small ventrolateral clock neurons that express pigment-dispersing factor (PDF) and short neuropeptide F (sNPF) and are most important for robust circadian rhythmicity in D. melanogaster virtually lack PDF and sNPF expression in D. littoralis. In contrast, dorsolateral clock neurons that express ion transport peptide in D. melanogaster additionally express allatostatin-C and appear suited to transfer day-length information to the neurosecretory system of D. littoralis. The lateral neurosecretory cells of D. littoralis contain more neuropeptides than D. melanogaster. Among them, the cells that coexpress corazonin, PDF, and diuretic hormone 44 appear most suited to control diapause. Our work sets the stage to investigate the roles of these diverse neuropeptides in regulating insect diapause." @default.
• W4385264831 created "2023-07-27" @default.
• W4385264831 creator A5026182436 @default.
• W4385264831 creator A5058814532 @default.
• W4385264831 creator A5069570092 @default.
• W4385264831 creator A5080420621 @default.
• W4385264831 date "2023-07-26" @default.
• W4385264831 modified "2023-09-30" @default.
• W4385264831 title "Characterization of clock‐related proteins and neuropeptides in <i>Drosophila littoralis</i> and their putative role in diapause" @default.
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