昆虫学报 ›› 2021, Vol. 64 ›› Issue (9): 1092-1103.doi: 10.16380/j.kcxb.2021.09.009

• 研究论文 • 上一篇    下一篇

日本刀角瓢虫对不同叶毛密度茄子品种的产卵选择性

梅文娟1,2,3, 姚凤銮1,2,3, 林硕1,2,3, 丁雪玲1,2,3, 郑宇1,2,3, 卢学松1,2,3, 何玉仙1,2,3,*, 翁启勇1,2,3,*   

  1.  (1. 福建省农业科学院植物保护研究所, 闽台作物有害生物生态防控国家重点实验室, 福州 350013;  2. 福建省作物有害生物监测与治理重点实验室, 福州 350013; 3. 福建省作物有害生物绿色防控工程研究中心, 福州 350013)
  • 出版日期:2021-09-20 发布日期:2021-09-03

Oviposition preference of Serangium japonicum (Coleoptera: Coccinellidae) to eggplant varieties with different leaf trichome densities

MEI Wen-Juan1,2,3, YAO Feng-Luan1,2,3, LIN Shuo1,2,3, DING Xue-Ling1,2,3, ZHENG Yu1,2,3, LU Xue-Song1,2,3, HE Yu-Xian1,2,3,*, WENG Qi-Yong1,2,3,*   

  1. (1. State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China; 2. Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests, Fuzhou 350013, China;3. Fujian Engineering Research Center for Green Pest Management, Fuzhou 350013, China)
  • Online:2021-09-20 Published:2021-09-03

摘要:

 【目的】产卵是昆虫发育过程中繁衍后代、维持种群数量的重要环节。在前期研究发现日本刀角瓢虫Serangium japonicum喜欢在茄子Solanum melongena叶片上产卵的前提下,本研究旨在深入探究日本刀角瓢虫对不同叶毛密度茄子品种的产卵选择性,以期进一步明确植物叶毛介导的日本刀角瓢虫产卵选择机制。【方法】观察日本刀角瓢虫雌成虫在4个茄子品种(黑到底、黑妞、日友长直壮、络星)叶碟和植株上的产卵选择性,测定不同茄子品种上日本刀角瓢虫后代的生长发育及成虫的繁殖力、捕食能力和对叶片的附着力,观察4个茄子品种叶片背面超微结构,测定日本刀角瓢虫雌成虫对茄子叶片的气味选择,测量茄子叶片上烟粉虱Bemisia tabaci卵粒的长度和宽度,测定日本刀角瓢虫卵被其雌成虫的同类捕食风险。【结果】日本刀角瓢虫偏好在黑到底上产卵,后代个体在黑到底品种上总发育历期(15.41±0.21 d)最短,亲代单雌产卵量(877.44±15.27粒/头)最高。但是,日本刀角瓢虫的产卵量占比与子代生长表现(发育历期、存活率和成虫体重)和成虫生存表现(繁殖力和捕食能力)均无显著相关性,而与叶片背面叶毛密度和长度存在显著正相关性;日本刀角瓢虫在茄子叶碟上的产卵量占比与日本刀角瓢虫雌成虫附着力存在显著正相关性。日本刀角瓢虫雌成虫附着力与叶毛密度显著正相关,而与亲代生长表现无显著相关关系。茄子叶片气味、猎物质量以及被同类捕食风险均不显著影响日本刀角瓢虫的产卵选择。【结论】茄子叶片背面叶毛密度及叶毛介导的日本刀角瓢虫附着力在日本刀角瓢虫对茄子叶片的产卵选择性中起重要作用。

关键词: 日本刀角瓢虫, 产卵选择, 叶片, 叶毛密度, 选择性生长表现假说, 附着力

Abstract:  【Aim】 Oviposition is vital for the survival and development of insect populations. Our previous study demonstrated that Serangium japonicum prefer to lay eggs on eggplant (Solanum melongena) leaves. This study aims to explore the oviposition preference of S. japonicum to eggplant varieties with different leaf trichome densities, so as to further clarify the mechanisms regarding to leaf trichome-related oviposition preference in S. japonicum. 【Methods】 Leaf discs and plants of four eggplant varieties (Heidaodi, Heiniu, Riyouchangzhizhuang and Luoxing) were provided for S. japonicum to determine the oviposition preference. The offspring performance including the growth and development, and adult fecundity, predation capability and attachment force of S. japonicum on leaves of each of the four eggplant varieties was tested. Microstructure of the abaxial leaf surface of the four eggplant varieties, the preference of S. japonicum female adults to leaf odours, the length and width of Bemisia tabaci eggs on eggplant leaves, and the cannibalism risk of S. japonicum eggs by its female adults were examined. 【Results】 S. japonicum preferred to lay eggs on Heidaodi, where the shortest offspring developmental duration (15.41±0.21 d) and the highest fecundity (877.44±15.27 eggs laid per female) were found. However, the proportion of S. japonicum eggs had no significant correlation with offspring performance (developmental duration, survival rate and adult body weight) and adult performance (fecundity and predation capability), but was significantly positively correlated with the density and length of leaf trichomes on the abaxial leaf surface (ALS). Furthermore, the proportion of S. japonicum eggs laid on leaf discs was significantly positively correlated with the attachment force of its female adults. The attachment force of S. japonicum female adults was positively correlated with leaf trichome density but had no significant correlation with adult performance. The leaf odour, prey quality, and cannibalism risk on the four eggplant varieties had no significant effects on the oviposition preference of S. japonicum. 【Conclusion】 The density of ALS leaf trichome and the attachment force of S. japonicum mediated by leaf trichomes play an important role in the oviposition preference of S. japonicum.

Key words: Serangium japonicum, oviposition preference, leaf, leaf trichome density, preference-performance hypothesis, attachment force