Parasitism rates and species composition of hymenopteran parasitoids of leafminers on Raphanus sativus (Daikon, Japanese radish) in Shizuoka Prefecture, central Japan

Q: What does this research mean for the field?

Natural enemy parasitic wasps, predominantly Diglyphus isaea, Dacnusa sasakawai, and Halticoptera circulus, significantly contribute to suppressing leafminer populations on Daikon radishes, though their parasitism rates vary substantially by geographic area. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Kentaro Matsuda; Daisuke Sasaki; Kota Tanaka

doi:10.4165/kapps.68.15

May 31, 2026Annual Report of The Kansai Plant Protection SocietyOpen Access

Parasitism rates and species composition of hymenopteran parasitoids of leafminers on Raphanus sativus (Daikon, Japanese radish) in Shizuoka Prefecture, central Japan

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Key Points

This research aims to evaluate the rates of parasitism and species composition of hymenopteran parasitoids on leafminers infesting Raphanus sativus in Shizuoka Prefecture.
Conducted surveys in two districts of Shizuoka Prefecture to assess host plant infestation rates and parasitoid performance.
Calculated parasitism rates of hymenopteran parasitoids in both districts and identified dominant species.
Collected data on environmental factors such as crop diversity, wind speed, and pesticide usage histories affecting parasitoid behavior.
Infestation rates of leafminers were reported as 0.6–28.2% in the Mihogahara district and 0–28.6% in the Haibara district.
Parasitism rates of parasitoids varied significantly by district, with rates of 8.3–79.5% (mean 52.0%) in Mihogahara and 0–48.6% (mean 17.3%) in Haibara.
Dominant parasitoid species included Diglyphus isaea and Dacnusa sasakawai, with environmental conditions affecting their prevalence.

Implication

Assesses parasitism rates and species composition in leafminers on Raphanus sativus, suggesting implications for pest management.

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Cite This Study

Matsuda et al. (2026) studied this question.

synapsesocial.com/papers/6a1fc3eddee9eb8c0dce5888 https://doi.org/10.4165/kapps.68.15

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Parasitism rates and species composition of hymenopteran parasitoids of leafminers on Raphanus sativus (Daikon, Japanese radish) in Shizuoka Prefecture, central Japan

Key Points

Implication

Abstract

Discussion

Cite This Study

Parasitism rates and species composition of hymenopteran parasitoids of leafminers on Raphanus sativus (Daikon, Japanese radish) in Shizuoka Prefecture, central Japan

Key Points

Implication

Abstract

Discussion

Cite This Study

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