Climate Change Data Portal
| DOI | 10.1016/j.cris.2024.100073 |
| Diapause survival requires a temperature-sensitive preparatory period | |
| 发表日期 | 2024 |
| EISSN | 2666-5158 |
| 起始页码 | 5 |
| 卷号 | 5 |
| 英文摘要 | Diapause is a form of internally-controlled dormancy that allows insects to avoid stressful conditions and periods of low food availability. Eastern spruce budworm (Choristoneura fumiferana Clemens), like many cold-adapted insects, enter diapause well in advance of winter conditions, thus exposing them to elevated temperatures during fall that can deplete energy stores and impact post-diapause survival. We explored the impact of fall conditions on C. fumiferana by manipulating the length of the fall period and exposure temperatures during the diapause initiation phase of second instar larvae in a factorial design. We exposed second instar larvae to four fall temperatures (10, 15, 20, and 25 degrees C) and five exposure times (1, 2, 4, 6, and 10 weeks) prior to standardized diapause conditions. We measured metabolites (glycogen, glycerol, and protein) prior to and during diapause for a subset of individuals. We also measured post-diapause survival by quantifying emergence following diapause conditions for a subset of individuals. We found that long, warm fall conditions depleted glycogen content and lowered post-diapause survival. We also found that short, cool conditions impacted post-diapause survival, although glycogen content remained high. Our results showed that fall conditions have substantial fitness consequences to overwintering insects. Optimal fall conditions struck a balance between exposure time and temperature. Our findings point to a potentially adaptive reason for early diapause onset: that an undescribed, but temperature-sensitive process is occurring in C. fumiferana larvae during the diapause initiation period that is essential for overwintering survival and successful post-diapause emergence. |
| 英文关键词 | Diapause initiation; Dormancy; Choristoneura fumiferana; Eastern spruce budworm; Fall; Overwintering |
| 语种 | 英语 |
| WOS研究方向 | Entomology |
| WOS类目 | Entomology |
| WOS记录号 | WOS:001184633500001 |
| 来源期刊 | CURRENT RESEARCH IN INSECT SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300930 |
| 作者单位 | Natural Resources Canada; Canadian Forest Service; Great Lakes Forestry Centre; University of British Columbia |
| 推荐引用方式 GB/T 7714 | . Diapause survival requires a temperature-sensitive preparatory period[J],2024,5. |
| APA | (2024).Diapause survival requires a temperature-sensitive preparatory period.CURRENT RESEARCH IN INSECT SCIENCE,5. |
| MLA | "Diapause survival requires a temperature-sensitive preparatory period".CURRENT RESEARCH IN INSECT SCIENCE 5(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
