Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs
One of the subspecies of the Eurasian spongy moth, <i>Lymantria dispar asiatica</i>, is a destructive forest pest in native regions and also an important quarantine pest in non-native regions. Its polyphagous nature, together with occasional outbreaks, may seriously threaten ecosystems a...
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MDPI AG
2022-12-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/12/2117 |
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| author | Min-Jung Kim Keonhee E. Kim Cha Young Lee Yonghwan Park Jong-Kook Jung Youngwoo Nam |
| author_facet | Min-Jung Kim Keonhee E. Kim Cha Young Lee Yonghwan Park Jong-Kook Jung Youngwoo Nam |
| author_sort | Min-Jung Kim |
| collection | DOAJ |
| description | One of the subspecies of the Eurasian spongy moth, <i>Lymantria dispar asiatica</i>, is a destructive forest pest in native regions and also an important quarantine pest in non-native regions. Its polyphagous nature, together with occasional outbreaks, may seriously threaten ecosystems and result in costly management programs. In this study, we examined the effect of chilling temperatures (−12, −6, 0, 6, and 12 °C) during the diapause phase on the survival and post-diapause development of <i>L. d. asiatica</i> eggs, collected before winter, in order to characterize their thermal response. The eggs were exposed to treatment temperatures for 100 days, followed by 25 °C incubation to determine their survival and development time. The eggs hatched in all the treatments, indicating that all the examined conditions could partly or sufficiently satisfy the thermal requirement for eggs to enter post-diapause development. However, exposure to chilling temperatures significantly affected both the survival and development times of overwintering eggs in a given temperature range. The survival rates declined at −12 °C, and the development rates accelerated as the chilling temperature increased. This information could offer clues for the assessment of the outbreak potential in native regions and the possibility of range expansion in non-native regions through the consideration of winter conditions that favor <i>L. d. asiatica</i> egg hatching and their subsequent development. |
| first_indexed | 2024-03-09T16:37:29Z |
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| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-09T16:37:29Z |
| publishDate | 2022-12-01 |
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| record_format | Article |
| series | Forests |
| spelling | doaj.art-b65bddfd56ca4bba8719bda94771b2022023-11-24T14:55:44ZengMDPI AGForests1999-49072022-12-011312211710.3390/f13122117Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) EggsMin-Jung Kim0Keonhee E. Kim1Cha Young Lee2Yonghwan Park3Jong-Kook Jung4Youngwoo Nam5Forest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of KoreaForest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of KoreaForest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of KoreaForest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of KoreaForest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of KoreaForest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of KoreaOne of the subspecies of the Eurasian spongy moth, <i>Lymantria dispar asiatica</i>, is a destructive forest pest in native regions and also an important quarantine pest in non-native regions. Its polyphagous nature, together with occasional outbreaks, may seriously threaten ecosystems and result in costly management programs. In this study, we examined the effect of chilling temperatures (−12, −6, 0, 6, and 12 °C) during the diapause phase on the survival and post-diapause development of <i>L. d. asiatica</i> eggs, collected before winter, in order to characterize their thermal response. The eggs were exposed to treatment temperatures for 100 days, followed by 25 °C incubation to determine their survival and development time. The eggs hatched in all the treatments, indicating that all the examined conditions could partly or sufficiently satisfy the thermal requirement for eggs to enter post-diapause development. However, exposure to chilling temperatures significantly affected both the survival and development times of overwintering eggs in a given temperature range. The survival rates declined at −12 °C, and the development rates accelerated as the chilling temperature increased. This information could offer clues for the assessment of the outbreak potential in native regions and the possibility of range expansion in non-native regions through the consideration of winter conditions that favor <i>L. d. asiatica</i> egg hatching and their subsequent development.https://www.mdpi.com/1999-4907/13/12/2117spongy mothgypsy mothoverwintering ecologyinsect pest outbreakegg diapause |
| spellingShingle | Min-Jung Kim Keonhee E. Kim Cha Young Lee Yonghwan Park Jong-Kook Jung Youngwoo Nam Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs Forests spongy moth gypsy moth overwintering ecology insect pest outbreak egg diapause |
| title | Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs |
| title_full | Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs |
| title_fullStr | Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs |
| title_full_unstemmed | Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs |
| title_short | Effect of Chilling Temperature on Survival and Post-Diapause Development of Korean Population of <i>Lymantria dispar asiatica</i> (Lepidoptera: Erebidae) Eggs |
| title_sort | effect of chilling temperature on survival and post diapause development of korean population of i lymantria dispar asiatica i lepidoptera erebidae eggs |
| topic | spongy moth gypsy moth overwintering ecology insect pest outbreak egg diapause |
| url | https://www.mdpi.com/1999-4907/13/12/2117 |
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