Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons
An invasive species, Ricania shantungensis Chou & Lu 1977 (Hemiptera: Ricaniidae), poses a threat to persimmons in Korea. Pesticide application was the most effective when targeting newly hatched nymphs. Therefore, this study was conducted to develop a degree-day model to predict the emergence o...
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Taylor & Francis Group
2025-12-01
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Online Access: | https://www.tandfonline.com/doi/10.1080/23311932.2025.2451061 |
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author | Sunghoon Baek Min-Jung Kim Hwa-Young Seo Chang-Gyu Park |
author_facet | Sunghoon Baek Min-Jung Kim Hwa-Young Seo Chang-Gyu Park |
author_sort | Sunghoon Baek |
collection | DOAJ |
description | An invasive species, Ricania shantungensis Chou & Lu 1977 (Hemiptera: Ricaniidae), poses a threat to persimmons in Korea. Pesticide application was the most effective when targeting newly hatched nymphs. Therefore, this study was conducted to develop a degree-day model to predict the emergence of first-instar R. shantungensis, the pesticide application timing, in persimmons. To estimate the lower developmental threshold, thermal requirement, and developmental rate, R. shantungensis eggs were collected from two locations and hatched at seven constant temperatures (12.4, 16.4, 20.4, 24.8, 28.3, 32.4, and 36.9 °C). The estimated lower developmental threshold and thermal constant were 12.0 °C and 159.9 degree-days, respectively. The developmental rates (the reciprocal of developmental times (days)) were 0.0264, 0.0526, 0.0818, 0.1001, and 0.1051 at 16.4, 20.4, 24.8, 28.3, and 32.4 °C, respectively. Based on these results, a degree-day model was developed and validated under field conditions. This model may increase the efficiency of R. shantungensis management in persimmon fields. |
format | Article |
id | doaj-art-18951434aec14488ac70148cdb223e7d |
institution | Kabale University |
issn | 2331-1932 |
language | English |
publishDate | 2025-12-01 |
publisher | Taylor & Francis Group |
record_format | Article |
series | Cogent Food & Agriculture |
spelling | doaj-art-18951434aec14488ac70148cdb223e7d2025-01-16T07:51:47ZengTaylor & Francis GroupCogent Food & Agriculture2331-19322025-12-0111110.1080/23311932.2025.2451061Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmonsSunghoon Baek0Min-Jung Kim1Hwa-Young Seo2Chang-Gyu Park3Department of Agriculture and Fisheries Convergence, Korea National University of Agriculture and Fisheries, Jeonju-Si, Republic of KoreaForest Entomology and Pathology Division, National Institute of Forest Science, Seoul, Republic of KoreaDepartment of Environmentally Friendly Agriculture, Chungnam Agricultural Research and Extension Services, Yesan-Si, Republic of KoreaDepartment of Agriculture and Fisheries Convergence, Korea National University of Agriculture and Fisheries, Jeonju-Si, Republic of KoreaAn invasive species, Ricania shantungensis Chou & Lu 1977 (Hemiptera: Ricaniidae), poses a threat to persimmons in Korea. Pesticide application was the most effective when targeting newly hatched nymphs. Therefore, this study was conducted to develop a degree-day model to predict the emergence of first-instar R. shantungensis, the pesticide application timing, in persimmons. To estimate the lower developmental threshold, thermal requirement, and developmental rate, R. shantungensis eggs were collected from two locations and hatched at seven constant temperatures (12.4, 16.4, 20.4, 24.8, 28.3, 32.4, and 36.9 °C). The estimated lower developmental threshold and thermal constant were 12.0 °C and 159.9 degree-days, respectively. The developmental rates (the reciprocal of developmental times (days)) were 0.0264, 0.0526, 0.0818, 0.1001, and 0.1051 at 16.4, 20.4, 24.8, 28.3, and 32.4 °C, respectively. Based on these results, a degree-day model was developed and validated under field conditions. This model may increase the efficiency of R. shantungensis management in persimmon fields.https://www.tandfonline.com/doi/10.1080/23311932.2025.2451061PersimmonRicania shantungensistemperature-dependent developmentdegree-day modelforecasting modelAgriculture & Environmental Sciences |
spellingShingle | Sunghoon Baek Min-Jung Kim Hwa-Young Seo Chang-Gyu Park Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons Cogent Food & Agriculture Persimmon Ricania shantungensis temperature-dependent development degree-day model forecasting model Agriculture & Environmental Sciences |
title | Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons |
title_full | Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons |
title_fullStr | Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons |
title_full_unstemmed | Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons |
title_short | Prediction of emergence of first-instar Ricania shantungensis (Hemiptera: Ricaniidae) in persimmons |
title_sort | prediction of emergence of first instar ricania shantungensis hemiptera ricaniidae in persimmons |
topic | Persimmon Ricania shantungensis temperature-dependent development degree-day model forecasting model Agriculture & Environmental Sciences |
url | https://www.tandfonline.com/doi/10.1080/23311932.2025.2451061 |
work_keys_str_mv | AT sunghoonbaek predictionofemergenceoffirstinstarricaniashantungensishemipteraricaniidaeinpersimmons AT minjungkim predictionofemergenceoffirstinstarricaniashantungensishemipteraricaniidaeinpersimmons AT hwayoungseo predictionofemergenceoffirstinstarricaniashantungensishemipteraricaniidaeinpersimmons AT changgyupark predictionofemergenceoffirstinstarricaniashantungensishemipteraricaniidaeinpersimmons |