摘要
盗蜜对植物生殖成功的影响仍存在争议,通过用纱网袋套蜜距隔离盗蜜者创设无盗蜜者的对照可有效研究盗蜜的生态学后果和机制,但因为传粉昆虫会偏爱某一色系的花朵,纱网袋颜色可能会干扰传粉者行为。为了筛选对传粉者干扰最小的纱网袋颜色,设计了4种颜色(黑、白、红、绿)纱网袋套蜜距,以不套蜜距作为对照,在一天中6个时间段观测红雉凤仙花传粉者的访花频率和单花停留时间。结果表明:(1)不同颜色纱网袋套蜜距的花朵被传粉者访问的频率差异显著,对照组访问频率最高,白色纱网袋处理组与之接近,套黑色纱网袋处理访问频率最低且与其他4个处理差异均显著;纱网袋颜色对传粉者单花停留时间无显著影响。(2)观测时间段对目标花朵被传粉者访问的频率和单花停留时间影响均显著。下午14:30—15:00访问次数最多,而上午9:30—9:50单花停留时间最长。实验结果显示在隔离盗蜜者时,用白色纱网袋套蜜距对传粉者访花行为干扰较小,黑色干扰最大,这为隔离盗蜜者研究盗蜜对植物与传粉互利共生关系的影响提供了重要的方法参考。
The impacts of nectar robbing on the reproductive success of plants is still controversial.The ecological consequences and mechanisms of nectar robbing can be effectively studied by using gauze bags to isolate nectar robbers and create a control treatment without nectar robbers.However,gauze bag color may interfere with pollinators because pollinators prefer flowers with a certain color.In this study,in order to screen the color of gauze bags with the least interference with pollinators,four kinds of gauze bags with different colors(black,white,red and green)were designed for bagging nectar spur.Natural nectar spurs without bagging were used as the control treatment to compare the differences in visiting frequency of pollinators and visiting duration time on single flower of Impatiens oxyanthera among five treatments in the six time periods in a day.The results showed that:(1)The visiting frequency of pollinators was significantly different among five treatments.The visiting frequency of pollinators to flowers with white gauze bag was closed to that of the control which was the highest,and the visiting frequency of black gauze bag treatment was the lowest,which was significantly different from the other four treatments.The gauze bag color had no significant effect on visiting duration time of pollinators on single flower.(2)The observation time period had a significantly effect on the visiting frequency and visiting duration time of pollinators on single flower.The most frequent visits occurred from 14:30 to 15:00 and the longest visiting duration time of pollinators was from 9:30 to 9:50 am.The results indicated that when isolating the nectar robbers,the white gauze bag had less interference on the pollinator's visiting behaviors,while the black one had the greatest interference.This study provided an important method reference for researching the effects of nectar robbing on plant-pollinator mutualisms through isolating nectar robber with gauze bag.
作者
钟楠蝶
李登飞
杨有芹
魏丽君
王琼
ZHONG Nandie;LI Dengfei;YANG Youqin;WEI Lijun;WANG Qiong(Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education),China West Normal University,Nanchong 637000,China;College of Life Science,China West Normal University,Nanchong 637000,China;College of Life Science,Central China Normal University,Wuhan 430079,China)
出处
《四川林业科技》
2021年第1期40-46,共7页
Journal of Sichuan Forestry Science and Technology
基金
国家自然科学基金(31600391)
西华师范大学英才科研基金项目(17YC345)。
关键词
纱网袋颜色
访问节律
红雉凤仙花
传粉频率
单花停留时间
Gauze bag color
Visiting rhythm
Impatiens oxyanthera
Visiting frequency of pollinators
Visiting duration time of pollinators
