Life history and population dynamics of Korean woodroach (Cryptocercus kyebangensis) populations

Y. Park, J. Choe
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引用次数: 2

Abstract

Ecological aspects of Cryptocercus kyebangensis life history were investigated via laboratory rearing and field observations. The number of antennal segments and head width were used to classify the first four instars. The results, which combine both the field collection and the laboratory rearing, indicate that eleven instars occur in C. kyebangensis. It supports the proposal on the number of instars of Park and Choe (2003c) based on field collections. A total of 388 nymphs from 13 colonies were collected prior to winter to investigate overwintering stages. Of them, 4% (n = 17) were the second instars, 57% (n = 220) were the third instars, and 39% (n = 151) were the fourth instars, respectively. Thus, most of them overwinter in the third or fourth instars. The results indicate that young nymphs of C. kyebangensis have to reach at least 3rd or 4th instar to survive low temperature environment of winter. According to seasonal dynamics of populations, C. kyebangensis reaches adulthood in the summer of the fourth or fifth year (4–5 yr span) after their birth.
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韩国木泥鳅(Cryptocercus kyebangensis)种群生活史和种群动态
通过室内饲养和野外观察,对克班隐尾蚴生活史的生态学方面进行了研究。采用天线节数和头宽对前4个星进行分类。野外采集与室内饲养相结合的结果表明,克班氏夜蛾有11龄。支持以现场收集资料为基础的“朴和崔某的明星数”(2003c)提案。在入冬前采集了13个蚁群共388只若虫,调查越冬阶段。其中,2龄虫占4% (n = 17), 3龄虫占57% (n = 220), 4龄虫占39% (n = 151)。因此,它们大多在三、四年级越冬。结果表明,为了在冬季低温环境中生存,吉邦草幼若虫至少要达到3 ~ 4龄。根据种群的季节动态变化,金班木在出生后第4年或第5年(4-5年)的夏季达到成虫期。
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