Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Some Biological Characteristics of Plum Sawfly Monocellicampa pruni (Hymenoptera: Tenthredinidae)

자두수염잎벌(Monocellicampa pruni)의 생물학적 특성

  • Nguyen, Nam Hai (Department of Plant Medicine, Sunchon National University) ;
  • Ki, Woong (Department of Plant Medicine, Sunchon National University) ;
  • Im, Min-Hyeok (Bio-Plant Environment Research Center (BPERC)) ;
  • Hong, Ki-Jeong (Department of Plant Medicine, Sunchon National University)
  • Received : 2021.09.08
  • Accepted : 2021.11.29
  • Published : 2021.12.01
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Abstract

This study investigated the life history of the plum sawfly Monocellicampa pruni Wei, 1998 through field observations and laboratory experiments. M. pruni is a univoltine, complete metamorphosis species with five instars at the larval stage. Adults emerge from the soil around mid-March when Japanese plum trees are in their flowering period. The adults deposit one (rarely two) egg(s) under the epidermis layer of the calyx. After hatching, the larva soon burrows into the fruitlet, consumes the endocarp and remains inside the fruit within its four-time moulting transitions before reaching full growth. At maturity (in May), the larva leaves the infested fruitlet through an exit hole and burrows into the soil at a depth of 2 - 11 cm for spinning its cocoon and hibernates until the next spring as the larval form. Under laboratory conditions (T = 20℃; RH = 40 - 60%), the male lived for a slightly shorter period than the female, 6.03 ± 0.40 and 7.55 ± 0.45 days, respectively. A female could produce 30.29 ± 4.50 eggs in her lifespan. In the field, the duration of the egg was approximately 10 - 11 days and that of the larva was approximately 31 - 34 days.

본 연구는 포장 및 실험실 조사를 통해 자두수염잎벌(Monocellicampa pruni Wei, 1998)의 생활사를 확인하였다. 자두수염잎벌은 5령의 유충 단계를 가지는 일화성 곤충이다. 성충은 자두가 만개하는 3월 중순경에 흙에서 나와 꽃받침의 표피층 밑에 1개(드물게 2개)의 알을 낳는다. 부화 후, 유충은 곧 어린 과실 속으로 파고들어 성충이 되기 전 4번의 탈피 과정 동안 과실 안에서 과육을 섭식한다. 유충이 성숙하면(5월) 과실에서 나와 2 - 11 cm깊이의 땅속으로 파고 들어가 번데기방을 만들고 이듬해 봄까지 전용 형태로 월동한다. 실험실 조건(T = 20℃, RH = 40 - 60%)에서 수컷 성충의 생존기간은 암컷성충보다 약간 짧았고(수컷 6.03 ± 0.40일 및 암컷 7.55 ± 0.45일), 암컷은 평생 30.29 ± 4.50개의 알았다. 포장에서 알기간은 약 10 - 11일이었고, 유충기간은 약 31 - 34일이었다.

Keywords

Acknowledgement

We would like to thank farmer J.S. Kim of Hanultari Farm, who kindly donated his orchard for this study's experiment. This research was supported by a Research promotion program of Sunchon National University.

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