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内蒙古荒漠草原亚洲小车蝗的种群动态
Population dynamics of Oedaleus asiaticus ondesert grasslands in Inner Mongolia
周晓榕 陈阳 郭永华 庞保平
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DOI:
作者单位:1. 内蒙古农业大学农学院呼和浩特010019; 2. 内蒙古植保站呼和浩特010010;3. 乌兰察布市四子王旗植保站乌兰花镇011800)
中文关键词:亚洲小车蝗,种群动态,空间格局,荒漠草原,内蒙古
英文关键词: Oedaleus asiaticus,population dynamics,spatial pattern,desert grasslands,Inner Mongolia
中文摘要:         2010—2011 年于内蒙古乌兰察布市四子王旗格根塔拉草原对亚洲小车蝗Oedaleus asiaticus ( B. -Bienko)种群动态进行了研究。结果表明,亚洲小车蝗种群空间格局为随机分布;亚洲小车蝗于6 月中旬开始孵化出土,1~ 3 龄蝗蝻高峰期在6 月中下旬至7 月初,终见期在7 月下旬;4 ~ 5 龄蝗蝻于6 月下旬始见,高峰期在7 月上中旬,终见期在7 月末;成虫于7 月上旬始见,高峰期在7 月中旬至8 月下旬,终见期在9 月上旬。应用最优分割法将亚洲小车蝗种群动态划分为3 个阶段:(1)6 月中旬,为蝗蝻开始出土期,数量稀少,空间格局为聚集分布或随机分布;(2)6 月下旬至7 月上中旬,为蝗蝻发生盛期,密度低时为随机分布,密度高时为聚集分布;(3)7 月中下旬至9 月上旬,为成虫发生期,空间格局为随机分布。
英文摘要:        The population dynamics of Oedaleus asiaticus ( B. -Bienko) was investigated on the Gegentala grasslands of   Siziwangqi county,Wulanchabu city,Inner Mongolia from 2010 to 2011. The spatial distribution of the grasshoppers was   random. Nymphs began to occur in mid-June. The first to third instars peaked in density from mid to late June to early   July and were gone by late July. The fourth to fifth instars began to appear in late June and peaked in early-mid July before  disappearing at the end of July. The adults began to appear in early July,peaked in mid-July to late August,and  disappeared in early September. The population dynamics of O. asiaticus was divided into three periods using the optimal
dividing method: ( 1 ) Nymphs began to emerge in mid-June,population density is low and individuals are randomly  dispersed or aggregated. (2) The nymphs occur mostly during late June and early-middle July and are either randomly   dispersed at low density or aggregated at high density. (3) Adults occur from mid to late July to early September and are   randomly distributed.
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