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Development and reproduction of the parasitic wasp Allotropa subclavata (Hymenoptera: Platygastridae) on the Japanese mealybug Planococcus kraunhiae (Hemiptera: Pseudococcidae)

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Abstract

Allotropa subclavata Muesebeck (Hymenoptera: Platygasteridae) is one of the most effective natural enemies of the Japanese mealybug Planococcus kraunhiae (Kuwana) (Hemiptera: Pseudococcidae), a serious pest in Japanese orchards. We examined the developmental and reproductive traits including host deprivation effect on oviposition of A. subclavata to evaluate its potential as a biological control agent for P. kraunhiae. The developmental zero and effective accumulative temperature of A. subclavata females and males reared on second-instar nymphs, a suitable host stage for this parasitoid, were 12.3 °C and 514.3 degree days and 12.8 °C and 432.8 degree days, respectively. The longevity of A. subclavata maintained with honey was longer than that of those maintained with water or no feeding. The average numbers of mature eggs in ovaries of the 0- and 30-day-old A. subclavata females were 301.1 and 290.4, respectively, and were not significantly different. Offspring production of 30-day-old A. subclavata females was approximately 80% that of 0-day-old female parasitoids. On average, 50% of all eggs were laid within 24 h of the start of oviposition. The intrinsic rate of increase at 25 °C was 0.115, which is considered to be approximate to that of the host, P. kraunhiae.

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Acknowledgements

We thank Dr. Takafumi Tsutsumi for his useful comments on the experiments. We thank Dr. Takatoshi Ueno, Dr. Midori Tsuda, and all the staff members of the Laboratory of Insect Natural Enemies, Kyushu University. We are grateful to the anonymous reviewers for their valuable comments.

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Correspondence to Mayumi Teshiba.

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Teshiba, M., Kawano, S., Tokuda, M. et al. Development and reproduction of the parasitic wasp Allotropa subclavata (Hymenoptera: Platygastridae) on the Japanese mealybug Planococcus kraunhiae (Hemiptera: Pseudococcidae). Appl Entomol Zool 54, 313–318 (2019). https://doi.org/10.1007/s13355-019-00628-y

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