刊期:双月刊
主管单位:中国科学院
主办单位:中国科学院动物研究所,中国昆虫学会
地址:北京市朝阳区北辰西路1号院5号中国科学院动物研究所
邮编:100101
电话:010-64807137
传真:010-64807137
E-Mail:entom@ioz.ac.cn
刊号:ISSN 2095-1353
        CN 11-6020/Q
国内发行代号:2-151
国际发行代号:BM-407
发行范围:国内外公开发布
定价:138元/册
定价:828元/年
银行汇款:中国工商银行北京海淀西区支行
户名:中国科学院动物研究所
帐号:0200 0045 0908 8125 063

您所在位置:首页->过刊浏览->2017年54卷第6期



放牧和季节性增加降水对毛足棒角 蝗发育与存活的影响
The combined effects of livestock grazing and seasonally increasing precipitation on the development and survival of Dasyhippus barbipes in Inner Mongolia
邢文丽1, 2** 庞保平1 郝树广2***
点击:580次 下载:0次
DOI:10.7679/j.issn.2095-1353.2017.117
作者单位:1. 内蒙古农业大学农学院,呼和浩特 010019;2. 中国科学院动物研究所农业虫鼠害综合治理研究国家重点实验室,北京 100101
中文关键词:增加降水,放牧,毛足棒角蝗,营养含量,可溶性糖,淀粉,氨基酸,蛋白质
英文关键词: increasing precipitation, livestock grazing, Dasyhippus barbipes, elemental content, soluble sugar, starch, amino acids, protein
中文摘要:

【目的】 降水和放牧是驱动草原蝗虫发生的重要因素,但其如何发挥作用尚存在争论。本文研究放牧和季节性降水增加的耦合效应通过改变栖息环境中食料植物的养分含量来驱动草原蝗虫灾害发生的生理与生态学机理。【方法】 在野外设置放牧和季节性增加降水的交叉处理,利用室外笼罩和室内饲养的方法研究在不同放牧和降水处理下毛足棒角蝗Dasyhippus barbipes发育与存活的响应规律,分析放牧和季节性降雨量变化耦合对毛足棒角蝗发生程度的影响。【结果】放牧极显著地(P<0.01)降低羊草Leymus chinensis叶片中可溶性糖态C和可利用C的含量,但对淀粉态C和总C的含量无显著影响;极显著地增加氨基酸态N、可利用N和总N含量,但对蛋白质态的N无影响;显著增加可利用的C︰N比值。增加降水的作用在放牧和不放牧间有波动,对可溶性糖态C和氨基酸态N有降低的趋势,但没有达到显著水平(P>0.05)。放牧会极显著地(P<0.01)降低毛足棒角蝗室内雌虫从5龄到成虫过程的死亡率,缩短发育历期,增加生长速率,增加成虫体重。放牧处理在野外笼罩实验中也表现出增加存活率和发育速率。降水对该蝗虫各特征的影响均不显著(P>0.05)。【结论】适当放牧会降低植物中可溶性糖态C,增加氨基酸态N的含量,有利于毛足棒角蝗的生长、发育、存活,促进毛足棒角蝗种群发生。

英文摘要:

 [Objectives]  Precipitation and grazing are important factors that drive grasshopper outbreaks in grassland ecosystems but exactly how these factors affect grasshopper population dynamics remains controversial. To clarify this, we studied the combined effects of sheep grazing and seasonally increasing precipitation on variation of both total C and N content, and available C and N content, of grasshopper food plants. [Methods]  Using both field studies and laboratory experiments, we investigated the development and survival responses of D. barbipes under different grazing and precipitation treatments. [Results]  Grazing can significantly decrease the C content in soluble sugar, and the available C content of the leaves of Leymus chinensis, but did not significantly affect the C content of starch or total C. Grazing also significantly increased the N content of amino acids, available N, total N, and the available C : N ratio. However, it had no significant effect on the N content of protein. The effect of seasonally increasing precipitation on C and N varied between grazed and ungrazed treatments. Increasing precipitation tended to reduce the C content of soluble sugar and the N content of amino acids, but the differences among precipitation treatments were not significant. Moreover, the results of a laboratory experiment suggest that grazing significantly decreased mortality, shortened developmental duration, increased growth rate, and increased adult body weight of fifth instar nymphs to adults, whereas the results of a cage experiment conducted in the field indicate that grazing increased survival and the development rate. Nevertheless, increasing precipitation did not significantly affect any biological parameters of D. barbipes[Conclusion]  Suitable grazing was propitious to the growth, development, survival of D. barbipes, and could promote grasshopper outbreaks by decreasing the C content of soluble sugar and increasing the N content of amino acids in food plant leaves.

读者评论

      读者ID: 密码:   
我要评论:
版权所有©2020应用昆虫学报》编辑部 京ICP备10006425号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第5325233名访问者