• 한국환경과학회지
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• 제29권9호
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• pp.935-938
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• 2020

This study investigated the oviposition characteristics of Protaetia brevitarsis seulensis after emergence as adults from the larva collected from three regions in Gangwon-do, Chungcheongnam-do, and Jeju-do. The laying egg method was identified with zone breeding, and the average and cumulative number of eggs laid were measured once a week for seven weeks. The average number of eggs laid peaked until 4 weeks, and subsequently decreased. The source areas with respect to average number and cumulative number of eggs laid were in the order of Jeju > Chungnam > Gangwon. In conclusion, this result suggests a method for continuously improving management and economic feasibility of insect farming by securing genetic diversity, and raising the most productive breeds to select individuals form regions associated with high numbers of laid eggs.

• 한국환경과학회지
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• 제29권7호
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• pp.789-792
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• 2020

The present study was investigated the oviposition characteristics of Protaetia brevitarsis seulensis with a focus on winter larvae to improve the utilization of insect resources. The average oviposition tendency and average cumulative number of eggs laid during a 7-week period were measured in adults emerging from larvae that had hibernated for 4 months in five farmhouses. The study covered five zones: Gimje, Jangsu, Wanju, Iksan and Yeoju. The average oviposition tendency over a 7-week period showed increased egg laying between 2 to 3 weeks and 5 to 6 weeks. Overall, it was found that the average cumulative number of eggs laid during the 7-week period was initially low and increased proportionally with time. Our results suggest that using adults that have emerged from hibernated larvae is effective in increasing the oviposition rate and utilization of the insect.

• 한국환경과학회지
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• 제29권7호
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• pp.785-788
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• 2020

We investigated the oviposition characteristics of Protaetia brevitarsis seulensis, focusing on zone breeding throughout the year in terms of the development and utilization of insect resources. To select Protaetia brevitarsis seulensis individuals laying a large number of eggs, the number of eggs laid for each individual was measured for each individual after emergence as adults from larvae grown at room temperature in five farmhouses. The five study zone included Gongju (Tancheon), Gyeonggi (Himsen), Chungnam (Gyeryong), Taean (Wonbuk), and Siheung (Baekse). The average oviposition tendency during a 12-week period obtained from the five regions was somewhat different; however, there was no remarkable difference in overall tendency. The maximum oviposition in Protaetia brevitarsisseulensis in the five regions occurred between 6 and 7 weeks. Compared toother regions, the average cumulative number of eggs laid during the 12-week period was higher (40%-60%) in Gongju (Tancheon) and Gyeonggi (Himsen). These results indicate that in two regions, zone breeding is selected as a system for increasing the demand for insects.

• 한국응용곤충학회지
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• 제35권1호
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• pp.38-44
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• 1996

간자와응애의 주요한 포식성 천적인 긴털이리응애의 생태적 특성에 대해 조사한 시험결과는 다음과 같다. 긴털이리응애의 발육기간은 15, 20, 25, 3$0^{\circ}C$에서 난에서 우화까지의 기간은 각각 22.8, 9.6, 4.8, 3.6일이었으며, 난에서 후약충까지의 발육영점은 12.7$^{\circ}C$, 유효적산온도는 61.4일도였다. 온도별 성충의 산란전기간은 산란기간이나 산란후기간보다 짧았다. 또한 자성충의 산란수는 21.7, 28.1, 34.2, 48.0개로 고온일수록 산란수가 많았다. 긴털이리응애의 내적자연증가율은 위의 각 온도에서 0.064, 0.139, 0.349, 0.402였으며, 평균세대기간은 36.0, 19.3, 8.6, 7.7일이었고, 개체군이 두배로 증가하는데는 10.8, 5.0, 2.0, 1.7일이 소요되었다. 긴털이리응애는 잡초, 낙엽, 토양에서 월동하고 있었다. 긴털이리응애의 산란 자성충의 포식량은 15, 20, 25, 3$0^{\circ}C$에서 각각 3.0, 4.9, 15.7, 19.4개의 간자응애 난을 포식하였으며, $30^{\circ}C$에서 전약충은 4.6개, 후약충 6.3개, 산란기 간중에 19.4개, 산란후기간에 6.8개의 난을 포식하였다.