Metabolic dynamics across prolonged diapause development in larvae of the sawfly, Cephalcia chuxiongica (Hymenoptera: Pamphiliidae)
[Display omitted] •Nutrition metabolism of C. chuxiongica displays three dynamic phases across diapause.•Metabolic dynamics are related to diapause development and seasonal changes.•Storage of glycogen and lipid reduce during diapause.•Trehalose, glucose, and glycerol contents increase in winter.•Hi...
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Published in | Journal of Asia-Pacific entomology Vol. 24; no. 2; pp. 1 - 6 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.06.2021
한국응용곤충학회 |
Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•Nutrition metabolism of C. chuxiongica displays three dynamic phases across diapause.•Metabolic dynamics are related to diapause development and seasonal changes.•Storage of glycogen and lipid reduce during diapause.•Trehalose, glucose, and glycerol contents increase in winter.•Higher protein content is associated with diapause maintenance compared with initiation and termination.
Nutrient metabolism is crucial for the survival of insects through the diapause. However, little is known about the metabolic mechanism of prolonged diapause. The sawfly, Cephalcia chuxiongica (Hymenoptera: Pamphiliidae), is a notorious defoliator of pine trees in southwest China. One of the distinguishing biological characteristics of this pest is the prolonged diapause of about 1.5 years. In this study, the body lipid, carbohydrate (total body sugar, glycogen, trehalose, and glucose), protein, and glycerol contents were measured in diapausing larvae of C. chuxiongica. The results showed that the changes of biochemical composition in C. chuxiongica are associated with the diapause initiation, maintenance, and termination phases. During the initiation phase, trehalose, glucose, and glycerol increased significantly, but glycogen decreased sharply. In general, the lipid, carbohydrate, and glycerol levels decreased gradually across the maintenance phase. At termination phase, the contents of glycogen and lipid persistently decreased, while an increase of trehalose, glucose, and glycerol contents were detected. The protein level was significantly higher at maintenance phase than at initiation and termination phases. It was also found that elevation of trehalose, glucose, and glycerol contents occurred in winter. These implies that the metabolites with altered levels in diapausing larvae of C. chuxiongica are responsible for maintaining a prolonged development and overwintering. |
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ISSN: | 1226-8615 1876-7990 |
DOI: | 10.1016/j.aspen.2021.04.015 |