Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effect of Day Length and Temperature on the Diapause Termination of Riptortus pedestris (Hemiptera: Alydidae) Female Adults

톱다리개미허리노린재 암컷 성충의 휴면종료에 미치는 일장과 온도의 영향

  • Huh, Wan (Division of Applied Life Science (BK21 Program), Institute of Agriculture and Life Sciences Graduate School of Gyeongsang National University) ;
  • Son, Dae-Young (Division of Applied Life Science (BK21 Program), Institute of Agriculture and Life Sciences Graduate School of Gyeongsang National University) ;
  • Park, Chung-Gyoo (Division of Applied Life Science (BK21 Program), Institute of Agriculture and Life Sciences Graduate School of Gyeongsang National University)
  • 허완 (경상대학교 응용생명과학부(BK21 Program)/ 농업생명과학연구원) ;
  • 손대영 (경상대학교 응용생명과학부(BK21 Program)/ 농업생명과학연구원) ;
  • 박정규 (경상대학교 응용생명과학부(BK21 Program)/ 농업생명과학연구원)
  • Received : 2009.12.11
  • Accepted : 2010.04.06
  • Published : 2010.06.30
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Abstract

The bean bug, Riptortus clavatus Thunberg (Hemiptera: Alydidae), is a pest of soybeans and tree fruits. It enters reproductive diapause during winter. We studied the effect of different combinations of temperature, day length, and treatment period on the termination of diapause in R. clavatus using adult females collected in October and November 2006. Ovarian development was used to determine diapause termination. The treatments were: (1) HTLD; $25^{\circ}C$, 14L:10D treatment for 1, 2, 3 weeks and 30 days, (2) HTSD; $25^{\circ}C$, 10L:14D treatment for 1, 2, and 3 weeks, (3) LTLD; $8^{\circ}C$, 14L:10D treatment for 1, 2, and 3 weeks followed by HTLD for 3 weeks, and (4) LTSD; $8^{\circ}C$, 10L:14D treatment for 1, 2, and 3 weeks followed by HTLD for 3 weeks. The HTSD treatments did not affect ovarian development, and resulted in no significant difference in the number of mature eggs in ovaries or the percentage of diapause-terminated females compared to the control females before treatment. The percentage of females that terminated diapause was significantly higher in the HTLD treatment than in the HTSD treatment. The HTLD treatment for more than 14 days increased the percentage of diapause-terminated females, accelerated the development of the ovaries, and increased the number of mature eggs in ovaries. Compared with the HTLD or HTSD treatments, the LTLD or LTSD treatments followed by the HTLD treatment accelerated ovarian development and increased the number of ovipositing females. The pre-LTSD treatment for 1 week was enough to increase the number of eggs oviposited.

한국, 일본을 비롯하여 아시아 대륙에 널리 분포하는 톱다리개미허리노린재 (Riptortus pedestris (Fabricius)) (Hemiptera: Alydidae)는 겨울에 성충으로 휴면한다. 2006년 10월~11월 사이에 야외에서 월동 중인 암컷 성충을 대상으로 휴면종료에 미치는 온도와 일장 및 그 처리기간의 영향을 연구하였다. 암컷을 해부하여 난소 발육 정도를 기준으로 휴면 종료 여부를 판정하였다. 처리 방법은 (1) 고온장일: $25^{\circ}C$, 14L:10D 조건에 1, 2, 3주 또는 30일간 처리, (2) 고온단일: $25^{\circ}C$, 10L:14D 조건에 1, 2, 3주 처리, (3) 저온장일: $8^{\circ}C$, 14L:10D에 1, 2, 3주 처리 후 고온장일에 3주간 처리, (4) 저온단일: $8^{\circ}C$, 10L:14D에 1, 2, 3 주간 처리 후 고온장일에 3주간 처리이었다. 고온단일처리는 난소발육에 영향을 미치지 않았고, 결과적으로 포란수나 휴면종료율이 무처리(실험 전의 성충)와 차이가 없었다. 그러나 고온장일처리는 고온단일처리보다 휴면종료 비율이 높았다. 고온 장일에 14일 이상 처리하면 휴면종료 암컷의 비율이 증가하고 난소발육이 촉진되었으며, 난소 내의 성숙난의 수도 증가하였다. 고온장일이나 고온단일 처리와 비교하였을 때, 저온장일이나 저온단일 처리 후 고온장일 처리는 난소발육을 촉진하였고 산란 성충수가 증가하였다. 저온단일에 일주일 간 전처리가 산란수 증가에 충분하였다.

Keywords

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  1. Occurrence and Control Method of Riptortus pedestris (Hemiptera: Alydidae): Korean Perspectives vol.52, pp.4, 2013, https://doi.org/10.5656/KSAE.2013.08.0.038
  2. Effect of Day Length and Temperature on the Diapause Termination of Riptortus pedestris (Hemiptera: Alydidae) Male Adults vol.49, pp.3, 2010, https://doi.org/10.5656/KSAE.2010.49.3.205