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Mating and adult feeding behaviour influence pheromone production in female Asian longhorn beetle Anoplophora glabripennis (Coleoptera: Cerambycidae)
Agricultural and Forest Entomology ( IF 1.6 ) Pub Date : 2020-12-12 , DOI: 10.1111/afe.12430 Tian Xu 1, 2 , Laura Hansen 1 , Stephen A. Teale 1
中文翻译：
交配和成虫摄食行为影响雌性亚洲长角甲虫 Anoplophora glabripennis（鞘翅目：天牛科）的信息素产生
更新日期：2020-12-12
Agricultural and Forest Entomology ( IF 1.6 ) Pub Date : 2020-12-12 , DOI: 10.1111/afe.12430 Tian Xu 1, 2 , Laura Hansen 1 , Stephen A. Teale 1
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- The Asian longhorn beetle (ALB) Anoplophora glabripennis Motschulsky is a destructive invasive species worldwide. Female ALB produce a pheromone component, α-longipinene, in the genitalia. However, the origin and factors, such as age, mating, adult feeding and host plant, influencing the production of this compound are unclear.
- Our results showed that virgin female ALB consistently produced α-longipinene at various ages after feeding for several days post eclosion, but unfed adult females never produced this compound. Mating significantly reduced the amount of α-longipinene in female genitalia.
- α-Longipinene was the most dominant compound in the volatiles emitted by females, but not in those emitted by males or host twigs (Acer pensylvanicum L.). The proportion of α-longipinene among the beetle-released sesquiterpenes that were known to be male antennally active was significantly greater than that emitted by ALB damaged, mechanically damaged or control twigs.
- These results suggest that ALB females probably derive α-longipinene or a precursor from hosts via adult feeding, and release it at a significantly different ratio from that found in host volatiles. The various ratios of α-longipinene produced by beetles and host twigs may encode information pertaining to multiple purposes such as aggregation, mate and host location.
中文翻译：
交配和成虫摄食行为影响雌性亚洲长角甲虫 Anoplophora glabripennis（鞘翅目：天牛科）的信息素产生
- 亚洲长角牛甲虫 (ALB) Anoplophora glabripennis Motschulsky 是一种世界范围内的破坏性入侵物种。雌性 ALB 在生殖器中产生信息素成分 α-longipinene。然而，影响该化合物产生的起源和因素，如年龄、交配、成虫取食和寄主植物，尚不清楚。
- 我们的结果表明，在羽化后几天进食后，未进食的雌性 ALB 在不同年龄持续产生 α-长萜烯，但未进食的成年雌性从未产生这种化合物。交配显着减少了女性生殖器中 α-longipinene 的数量。
- α-Longipinene 是雌性释放的挥发物中最主要的化合物，但在雄性或寄主枝条（Acer pensylvanicum L. ）释放的挥发物中不是最主要的化合物。在已知具有雄性触角活性的甲虫释放的倍半萜烯中，α-长萜烯的比例显着大于 ALB 受损、机械受损或对照枝条释放的比例。
- 这些结果表明，ALB 雌性可能通过成虫喂养从宿主中获得 α-longipinene 或前体，并以与宿主挥发物中发现的显着不同的比率释放它。甲虫和寄主树枝产生的 α-longipinene 的各种比例可能编码与多种目的有关的信息，例如聚集、交配和寄主位置。
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