Antennal sensitivity to female sex pheromone compounds of Spodoptera frugiperda males (Lepidoptera: Noctuidae) and associated field behaviour,Physiological Entomology

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Antennal sensitivity to female sex pheromone compounds of Spodoptera frugiperda males (Lepidoptera: Noctuidae) and associated field behaviour
Physiological Entomology ( IF 1.6 ) Pub Date : 2020-08-14 , DOI: 10.1111/phen.12331
Samuel Cruz‐Esteban _{1,

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Affiliation

The fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), is one of the most important insect pests of corn, sorghum, rice, and grasses. The sex pheromone produced by S. frugiperda is composed of a mixture of esters. In this study, I determined the antennal responses of FAW males from 22 populations in Mexico to the components of the sex pheromone of this species: (Z)‐7‐dodecenyl acetate (Z7‐12:OAc), (Z)‐9‐tetradecenyl acetate (Z9‐14:OAc), and (Z)‐11‐hexadecenyl acetate (Z11‐16:OAc) at four doses (0.01, 0.1, 1, and 10 μg). In addition, I evaluated the behavioural activity of single compounds in the field. The largest antennal responses of FAW males from all the sampled regions were elicited by Z9‐14:OAc (all doses evaluated) and Z7‐12:OAc (0.01, 0.1, and 1 μg). The male antennal responses evoked by Z11‐16:OAc were smaller but similar to responses to Z7‐12:OAc at lower doses (0.01 and 0.1 μg). In the field test, Z9‐14:OAc produced significantly higher captures of S. frugiperda males compared to Z7‐12:AOc and Z11‐16:OAc. Antennal responses were related to captures obtained in the field, supported by the positive correlation of these variables [electroantennography (EAG) response and behaviour], with the exception of Z7‐12:OAc, which elicited relatively large EAG responses but did not produce high captures of S. frugiperda. These results are of importance to agriculture, enabling the implementation of better methods of monitoring and controlling this pest, and support the suggestion that a mixture of Z9‐14:OAc and Z7‐12:OAc could represent an effective attractant for all evaluated populations of S. frugiperda in Mexico.

中文翻译：

草地夜蛾雄性（鳞翅目：夜蛾科）对雌性性信息素化合物的触角敏感性和相关的野外行为

秋粘虫（FAW），草地贪夜蛾（JE Smith）（鳞翅目：夜蛾科），是玉米、高粱、水稻和草类最重要的害虫之一。S. frugiperda 产生的性信息素由酯的混合物组成。在这项研究中，我确定了墨西哥 22 个种群的秋粘虫雄性对该物种性信息素成分的触角反应：(Z)-7-十二碳烯乙酸酯 (Z7-12:OAc)、(Z)-9-醋酸十四碳烯酯 (Z9-14:OAc) 和 (Z)-11-醋酸十六碳烯酯 (Z11-16:OAc) 四种剂量（0.01、0.1、1 和 10 μg）。此外，我还评估了该领域中单一化合物的行为活动。Z9-14:OAc（所有评估的剂量）和 Z7-12:OAc（0.01、0.1 和 1 μg）引起来自所有采样区域的 FAW 雄性的最大触角响应。Z11-16 引起的雄性触角反应：OAc 较小，但与 Z7-12:OAc 在较低剂量（0.01 和 0.1 μg）下的反应相似。在田间试验中，与 Z7-12:AOc 和 Z11-16:OAc 相比，Z9-14:OAc 对草地贪夜蛾雄性的捕获量明显更高。触角响应与在现场获得的捕获相关，这些变量 [触角电图 (EAG) 响应和行为] 的正相关支持，但 Z7-12:OAc 除外，它引起了相对较大的 EAG 响应但没有产生高捕获 S. frugiperda。这些结果对农业很重要，有助于实施更好的方法来监测和控制这种害虫，并支持 Z9-14:OAc 和 Z7-12:OAc 的混合物可以代表所有评估种群的有效引诱剂的建议。 S. frugiperda 在墨西哥。

更新日期：2020-08-14

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