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->2023年60卷第5期



利用生命表分析不同种群密度下 扶桑绵粉蚧生长适应性
Effects of population density on the fitness of Phenacoccus solenopsis
罗正玉,高莉萍,杜嘉宜,雷小涛,王香萍,张金平
点击:193次 下载:11次
DOI:10.7679/j.issn.2095-1353.2023.140
作者单位:长江大学农学院昆虫研究所
中文关键词:扶桑绵粉蚧;适应性;密度;存活率;产卵量;寿命;种群生命表
英文关键词:Phenacoccus solenopsis; fitness; density; survival rate; fecundity; longevity; population life table
中文摘要:

【目的】 明确密度对扶桑绵粉蚧Phenacoccus solenopsis Tinsley种群增长的影响,为大田防治该虫提供理论依据。【方法】 本研究在温度(26 ± 1℃、RH 70% ± 10%、光周期16L︰8D条件下,对单位面积内(15 cm2)不同密度(2、5、10、15和20头)下饲养的扶桑绵粉蚧的生长发育和繁殖进行研究。【结果】 不同密度对其发育历期、存活率、寿命、产卵量和种群增长均有影响;饲养密度为5和10头时其发育历期分别为(26.60 ± 0.57)d和(26.67 ± 0.45)d,显著短于其他密度下的发育历期(P<0.05);若虫密度为2头时,单雌平均产卵量最高,为(100.56 ± 1.25)粒,若虫密度5头时,单雌平均产卵量为(61.29 ± 2.64)粒;若虫密度为5头时其存活率为75%,显著高于其他密度(P<0.05);净增殖率(R0)以若虫密度为2头时最大,R0为31.425,其次为密度为5头时,R0为22.985,且R0值随若虫密度的增加而下降;种群倍增时间(t)以若虫密度为5头时最小,t为5.635 d,其次是若虫密度为10头时,t为5.682 d,总的趋势为t值随若虫密度的增加呈现出先减小后增加。【结论】 综合扶桑绵粉蚧若虫密度与其生长发育与繁殖的相关性结果,表明若虫密度为5头/15 cm2时,最适合其生长发育和繁殖,密度过低或过高均对其种群产生不利的影响。研究结果表明若虫密度是影响扶桑绵粉蚧种群增长的重要因子之一,可作为调查及防治该害虫的重要指标。

英文摘要:

[Objectives]  To clarify the effect of density on the population growth of Phenacoccus solenopsis to improve control of this pest. [Methods]  The development and reproduction of P. solenopsis kept at (26 ± 1) ℃, a RH of 70% ± 10% and a photoperiod of 16L︰8D, was measured at different nymphal densities (2, 5, 10, 15, and 20 per 15 cm2). [Results]  The developmental duration was significantly shorter, (26.60 ± 0.57) d and (26.67 ± 0.45) d, respectively, at nymphal densities of 5 or 10 per 15 cm2 (P < 0.05). Female fecundity was highest [(100.56 ± 1.25) progeny per female] at a nymphal density of 2, followed by a nymphal density of 5 [(61.29 ± 2.64) progeny per female]. The survival rate at a nymphal density of 5 was 75%, which was significantly higher than the other treatments (P < 0.05). The net reproductive rate (R0) was highest at a nymphal density of 2 (31.425), followed by that at a nymphal density of 5 (22.985). R0 decreased with increasing nymph density. The population doubling time (t) was shortest at a nymphal density of 5 (5.635 d), followed by a nymphal density of 10 (105.682 d). The t value was first negatively, then positively, correlated with nymphal density. [Conclusion]  Nymphal density affects the population growth of P. solenopsis. A density of 5 nymphs / 15 cm2 was the most suitable for the growth, development and reproduction of this species; lower or higher densities were less suitable. These findings are useful for further research on control methods for P. solenopsis.

读者评论

      读者ID: 密码:   
我要评论:
版权所有©2024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9020884名访问者