솔수염하늘소(Monochamus alternatus Hope(Coleoptera: Cerambycidae)는 소나무재선충병을 유발하는 소나무재선충(Bursaphelenchus xylophilus)의 주요 매개충으로 국내 소나무림에 큰 위협을 가하고 있다. 소나무재선충병 방제전략의효과적인 수행을 위해서는 솔수염하늘소 월동유충의 우화시기예측 시스템이 유용하게 활용될 수 있다. 따라서솔수염하늘소의 월동 후 발육단계별 온도발육 특성을 구명하고, 이 결과를 기반으로 우화시기 예측모형을 개발하여솔수염하늘소 성충의 발생시기를 예측함으로써, 솔수염하늘소의 생태적 특성을 이해하고 소나무재선충병 방제전략수립 시 유용하게 활용될 수 있는 자료를 제공하고자 수행하였다. 솔수염하늘소 성충의 우화시기 예측모형은 솔수염하늘소의 월동유충과 용의 온도의존적 발육실험결과를 토대로 작성한 후, 2016년과 2017년의 솔수염하늘소 성충우화패턴과 비교하여 모형의 적합도를 평가하였다.

This study was performed to investigate the emergence timing and daily emergence from the different tree species logs (Korean white pine, Pine, and Japanese larch) at Cheongwon, Chungcheongbuk-do from 2006 to 2008. Pine sawyer adults began to emerge on early May (2~10th day) and finished on mid-June (4~20th day) in the Korean white pine and pine logs. However, pine sawyer adults began to emerge on mid-May (13th day) and finished late May (27th day) in Japanese larch logs. Japanese larch logs shows shorter emergence timing of pine sawyer adult compare to those of other two tree species. Emergence timing shows no difference between males and females. Sex ratios of emerged adult in 2007 were 0.55 from Korean white pine, 0.46 from Pine, and 0.59 from Japanese larch, it shows no difference among tree species. Female and male adults emerged throughout 24 hrs, 22.8% of the total adults emerged from 12~14:00 (22.8%) and adults emerged lowest from 06~08:00. Of the adults emerged from the logs, 98.9% was univoltine and the rest was biennial which emerged next year.

This study was conducted to determine and to standardize the time of emergence of Protaetia brevitarsis adults, through four breeding experiments, including one which selected the dominant individuals of Protaetia brevitarsis. The breeding experiments were divided into two groups with hibernating and non-hibernating Protaetia brevitarsis by placing 100, 150, 200, 250 and 300 Protaetia brevitarsis in each breeding box (50 cm × 35 cm × 15 cm) filled with 12 L of fermented sawdust. Breeding tests were with four replicates each for 3 months. The test period was classified into four stages: Exp. 1 (Sep 1, 2019 to Nov 30, 2019), Exp. 2 (Dec 1, 2019 to Feb 29, 2020), Exp. 3 (Mar 1, 2019 to May 31, 2020) and Exp. 4 (Jun 1, 2020 to Aug 31, 2020). The survey items included average dead number, average emergence number, average mortality, and average emergence rate. In Exp. 1 and 2, the changes in Protaetia brevitarsis adults were similar. In Tables 1 and 2, the allegorical changes of adult white-spotted flowers were similar. In addition, the average dead number, average emergence number, average mortality, and average emergence rate showed better results in the hibernation state than in both Exp. 1 and 2. Exp. 3 and 4 showed a pattern of change different from the results of Exp. 1 and 2 and these characteristics were superior in the hibernation states compared to the non-hibernation states. In conclusion, this result was found to be most appropriate as a standardization of the emergence time of 200 Protaetia brevitarsis treatments through four breeding experiments in the hibernating state.