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http://dx.doi.org/10.5656/KSAE.2014.10.0.047

Host Plant, Occurrence, and Oviposition of the Eurytomid wasp Eurytoma maslovskii in Korea  

Lee, Sung-Min (Department of Plant Medicine, Sunchon National University)
Kim, Se-Jin (Department of Agricultural Biotechnology, Seoul National University)
Yang, Chang Yeol (National Institute of Horticultural and Herbal Science, Rural Development Administration)
Shin, Jong-Seop (Suncheon City Agriculture Development & Technology Center)
Hong, Ki-Jeong (Department of Plant Medicine, Sunchon National University)
Publication Information
Korean journal of applied entomology / v.53, no.4, 2014 , pp. 381-389 More about this Journal
Abstract
We investigated the host fruit, seasonal occurrence, and oviposition habits of the eurytomid wasp, Eurytoma maslovskii that cause Japanese apricot fruit drops. This eurytomid wasp was found to occur in Gyeonggi-do, Chungcheongbuk-do, Chungcheongnam-do, Jeollanam-do, and Jeollabuk-do in Korea, and it attacked seeds of Japanese apricot, apricot, and peach. Overwintered larvae were observed until mid April, inside the stone of Japanese apricots. Pupation took place between late March and late April. More than 90% of the adult wasps emerged between late April and early May. The female wasps laid eggs just under the seed coat before endocarp hardening. The length of the wasp ovipositor was at least 5 mm, and hence, the diameters of fruits for oviposition would not exceed 2 cm. We observed up to five eggs per fruit, and the egg stage did not last for more than two days. Newly hatched larvae moved to the embryo, which is the first part that forms in a seed, and feeds on this. Larval competition occurs during this time; in this study, only one larva survived and matured. Thus, from the larva cycle of the wasp, most of the damaged fruits would have fallen by early June, before the harvest period.
Keywords
Eurytoma maslovskii; Prunus mume; Host plant; Occurrence; Oviposition;
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