Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Gnawing and Escaping Behaviors of Monochamus alternatus (Coleoptera: Cerambycidae) in a Confined Environment: Suggesting a Bioassay Method of Netting for Adult Escape Prevention

인위적 구속환경에서 솔수염하늘소의 쏠기와 탈출행동: 성충탈출 방지용 그물망의 생물검정법 제안

  • Ko, Gyeong hun (Majors in Plant Resource Sciences & Environment, College of Applied Life Science, SARI, Jeju National University) ;
  • Kim, Dong-Soon (The Research Institute for Subtropical Agriculture and Biotechnology, Jeju National University)
  • 고경훈 (제주대학교 생명자원과학대학 식물환경전공) ;
  • 김동순 (제주대학교 아열대농업생명과학연구소)
  • Received : 2017.04.25
  • Accepted : 2017.05.15
  • Published : 2017.06.01
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Abstract

The Japanese pine sawyer, Monochamus alternatus Hope, is a representative vector of the pine wood nematode, Bursaphelenchus xylophilus, which causes wilting symptoms in pine trees. A control method using a net has been introduced, which is an alternative method to the fumigation for the control of dead pine trees by pine wilt disease. This study was carried out to investigate the factors that induce gnawing and escaping behaviors of M. alternatus. The behaviors were examined after M. alternatus adult was placed in a confined space at different temperatures. M. alternatus adults could escape through mesh net torn by gnawing when they were confined in a space of 30 mm or less in diameter. The success rate of escape was high at 20 to $30^{\circ}C$, and no adults escaped at $15^{\circ}C$. The enticement of M. alternatus adults by food didn't affect the success rate of escape. In the case of not being confined in a narrow space, the escaping hole could not be formed because the gnawing was not concentrated on one part. M. alternatus moved its body in a narrow space using the tarsus of middle and hind legs, and made an escape hole by concentrically gnawing the obstacle on the front side with mandible, and showed a behavior of getting out while supporting the body by supporting the front legs. The present results will be able to use as an important basic information for evaluating the performance of mesh net which confines M. alternatus adults and suggested by alternative method to fumigation technology.

솔수염하늘소는 소나무에 시들음 증상을 유발하여 괴사시키는 소나무재선충을 매개하는 대표적 매개충이다. 소나무재선충병 고사목 방제살충처리 방법으로 훈증방법을 대체할 수 있는 그물망을 이용한 방제법이 도입되고 있다. 본 연구는 솔수염하늘소의 쏠기와 탈출 행동을 유발시키는 조건을 구명하기 위하여 구속 공간 및 온도를 달리 처리하고 탈출여부를 조사하였다. 솔수염하늘소는 직경 30 mm 이하의 공간에 구속되었을 때 장애물을 뚫고 탈출이 가능하였다. 온도 $15^{\circ}C$에서는 탈출에 성공하지 못하였으며, $20{\sim}30^{\circ}C$ 범위에서 탈출 성공률이 높았다. 먹이를 이용한 솔수염하늘소의 유인은 탈출 성공률에 영향을 미치지 않았다. 좁은 공간에 구속되지 않는 경우는 갉는 부위가 집중되지 않아 탈출공을 형성하지 못하였다. 구속된 공간에서 솔수염하늘소는 가운데와 뒷다리 부절을 이용해 좁은 공간에서 몸을 이동시키며 큰턱으로 정면에 있는 장애물을 집중적으로 갉아서 탈출공을 만들고 앞다리를 뻗어 몸을 지탱하면서 빠져나오는 행동을 보였다. 본 연구의 결과는 훈증 대체기술로 제시되고 있는 구속 그물망의 성능을 평가하는데 중요한 기초자료로 활용될 수 있을 것이다.

Keywords

References

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