Oviposition and Feeding Preference in Monochamus Saltuarius (Coleoptera: Cerambycidae)

북방수염하늘소의 산란부위 및 식이 선호성

  • Park, Yong Chul (Department of Plant Biotechnology Program, Division of Biotechnology, School of Biotechnology, Kangwon National University) ;
  • Kim, Jong Kuk (Department of Forest Resources Protection, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Cho, SaeYoull (Division of Metabolism, Endocrinology, and Diabetes, University of Mechigan) ;
  • Shin, Sang Chul (Division of Forest Insect Pests and Disease, Korea Forest Research Institute) ;
  • Chung, Yeong Jin (Division of Forest Insect Pests and Disease, Korea Forest Research Institute) ;
  • Won, Dae Sung (Department of Forest Resources Protection, College of Forest and Environmental Sciences, Kangwon National University)
  • Received : 2007.06.12
  • Accepted : 2007.08.20
  • Published : 2007.09.30

Abstract

The average number of oviposion scars in lower (facing the Land) and upper part (facing the Sun) of P. koraiensis logs were $16.3{\pm}13.9$ and $3.3{\pm}3.6$, respectively. Oviposition preference of Monochamus saltuarius adults was lower part of Pinus koraiensis. Estimated average number of larvae and egg from oviposition scars ($64.7{\pm}23.8$) in P. koraiensis logs was $18.8{\pm}10.0$ in the laboratory condition. However, oviposition scars were $63.6{\pm}31.1$ and average number of larvae and egg was $2.0{\pm}2.6$ in field condition. When we fed with inner bark (phloem) and xylem of P. koraiensis, body weight of M. saltuarius larvae was normal. However, when we only fed xylem of P. koraiensis, body weight and size were reduced but they were recovered after feeding inner bark (phloem). Esterase isozymes were assessed from larvae fat body of M. saltuarius and Est1 were specifically activated when we fed with inner bark (phloem) and xylem.

북방수염하늘소의 산란흔은 잣나무의 산란가지 상부(햇빛을 바로 받는 부위)에서 $3.3{\pm}3.6$개, 하부(지면을 향하는 부위)에서 $16.3{\pm}13.9$개로 하부를 선호하여 산란하는 것으로 나타났다. 산란흔과 실제 부화 유충 수를 비교 한 결과 실험실 산란목의 산란흔은 $64.7{\pm}23.8$개였고, 유충 수는 $18.8{\pm}10.0$마리였다. 반면, 야외 산란목의 산란흔은 $63.6{\pm}31.1$개 였고, 유충 수는 $2.0{\pm}2.6$마리 였다. 잣나무 내수피와 목질부를 함께 공급한 유충들은 체중이 증가 하며 발육상태가 정상이었으나 목질부만 공급한 유충들의 경우 체중이 감소 하며 발육상태는 불량 하였다. 그러나 목질부만 급여한 유충들에게 잣나무 내수피를 함께 공급한 결과 몸무게와 발육상태가 회복 되는 것을 관찰 할 수 있었다. 지방체를 이용한 Esterase 활성 실험에서는 잣나무 내수피와 목질부를 함께 먹인 유충에서 Est1이 강한 활성을 나타냈다.

Keywords

References

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