Two Sympatric Spodoptera Species Could Mutually Recognize Sex Pheromone Components for Behavioral Isolation
Two Sympatric Spodoptera Species Could Mutually Recognize Sex Pheromone Components for Behavioral Isolation
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两种同域斜纹夜蛾物种可以相互识别性信息素成分以实现行为隔离
DOI：
10.3389/fphys.2019.01256
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发表时间：
2019-09
影响因子：
4
通讯作者：
Den Jian Yu
中科院分区：
文献类型：
--
作者：
Yan Qi;Liu Xiao Long;Wang Yu Lei;Tang Xiao Qin;Shen Zhi Jie;Dong Shuang Lin;Den Jian Yu
斑点夜蛾和斜纹夜蛾是中国和许多国家的两种同域种。两种蛾都使用一种多组分性信息素混合物，包括一种共同成分Z9，E12-14:OAc，以及两种特定成分Z9-14:OH和Z11-16:OAc，以及一种特定成分Z9，E11-14:OAc。对于这两个物种，已经有充分的证据表明，雄性能够识别并被其物种特有的性信息素所吸引，这是一种生殖隔离的手段，但雄性是否能够相互识别其同域物种的信息素成分尚不清楚。在本研究中，通过天线电图（EAG）和现场评估来解决这个问题。结果表明，各物种雄性对其同域种的特定成分均有显著的响应，但其响应值低于对其主要成分的响应值。在田间试验中，斜纹夜蛾的特异性成分Z9-14:OH和Z11-16:OAc对斜纹夜蛾同种性信息素的捕获量有较强的抑制作用，而斜纹夜蛾的特异性成分Z9、E11-14:OAc对斜纹夜蛾的性信息素的捕获量有较强的抑制作用。此外，两种诱捕剂的联合诱捕完全抑制了斜纹夜蛾的雄鱼捕获量，显著降低了斜纹夜蛾的雄鱼捕获量。结果表明，两个兄弟物种的雄性可以感知对方的特定成分，这表明信息素成分的相互识别可能加强了两个物种之间的行为隔离。本研究为同域飞蛾通过性信息素交流系统进行生殖隔离提供了新的认识，并为利用昆虫性信息素设计针对多物种的交配干扰策略提供了依据。
Spodoptera exigua and S. litura are two sympatric species in China and many other countries. Both moths employ a multiple component sex pheromone blend, including a common component Z9,E12-14:OAc, and two specific components Z9-14:OH and Z11-16:OAc for S. exigua, and one specific component Z9,E11-14:OAc for S. litura. For the two species, it has been well documented that males are able to recognize and behaviorally attracted by their species-specific sex pheromone, which functions as a means of reproductive isolation, but whether males could mutually recognize pheromone components of its sympatric species is unknown. In the present study, the electroantennogram (EAG) and field evaluation were conducted to address this topic. The EAG recordings revealed that males of each species could significantly respond to specific components of its sympatric species, although the response values were lower than that to its own major component. In field tests, the specific components Z9-14:OH and Z11-16:OAc of S. exigua strongly inhibited the male catches of S. litura to its conspecific sex pheromone, while specific component Z9,E11-14:OAc of S. litura significantly reduced the male catches of S. exigua to its sex pheromone. Furthermore, the combined lure of the two species completely inhibited male catches of S. litura, and significantly decreased the male catches of S. exigua, compared to the species-specific lure alone. The results demonstrated that males of the two sibling species could perceive the specific components of its counterpart, suggesting that mutual recognition of pheromone components may function to strengthen the behavioral isolation between the two species. Our study has added new knowledge to the reproductive isolation via sex pheromone communication system in sympatric moth species, and provided a base for designing of mating disruption tactics targeting multispecies by using insect sex pheromones.
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影响因子：
1.9
作者：
B. F. Nesbitt;P. S. Beevor-;D. Hall;R. Lester
通讯作者：
B. F. Nesbitt;P. S. Beevor-;D. Hall;R. Lester
DOI：
10.1016/j.cbpa.2007.06.210
发表时间：
2007-08
影响因子：
2.3
作者：
W. Leal
通讯作者：
W. Leal
影响因子：
--
作者：
B. Hansson;C. Löfstedt;J. Löfqvist;E. Hallberg
通讯作者：
B. Hansson;C. Löfstedt;J. Löfqvist;E. Hallberg
DOI：
--
发表时间：
2002
期刊：
Entomological Knowledge
影响因子：
--
作者：
H. Chun
通讯作者：
H. Chun
影响因子：
3.5
作者：
G. Prestwich
通讯作者：
G. Prestwich