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The Braconid <i>Syntretomorpha szaboi</i> Papp Is Posing a Great Threat to the Eastern Honeybee, <i>Apis cerana</i>
oleh: Yanling Xie, Xiaoling Su, Ruike Wei, Lianfei Cao, Huoqing Zheng
Format: | Article |
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Diterbitkan: | MDPI AG 2024-05-01 |
Deskripsi
The expansion of pathogen distribution may result in a new threat to the host. The braconid <i>Syntretomorpha szaboi</i> Papp is an obligate parasite that targets <i>Apis cerana</i>, the Eastern honeybee, engaging in endoparasitism by ovipositing eggs inside the host bee. Although <i>S. szaboi</i> has been documented in India and in various regions across China, its epidemiological data are notably lacking. In this study, we summarized the distribution of <i>S. szaboi</i> based on the available literature and described the symptoms of infested honeybee workers. We also investigated the infestation rate in 36 apiaries in Zhejiang Province, China, after a new occurrence of the parasite was reported in these regions in 2020. A rapid increase in infestation rate was found from the year 2021 to 2022, reaching 53.88% at the colony level of the sampled colonies in the Jinhua and Wenzhou apiaries. The infestation rate at an individual level in positive colonies reached an average of 26%. A monthly survey showed high seasonal variation in <i>S. szaboi</i> infestation, with the peak occurring from May to August. These results suggest that <i>S. szaboi</i> poses a great threat to <i>A. cerana</i>. Further research is needed to elucidate its epidemiology and pathology and to develop disease prevention and control strategies.