Brazilian Agricultural Research Corporation (Embrapa Semi-arid), Petrolina, Pernambuco, Brazil.
Univ of Pernambuco (UPE), Petrolina, Pernambuco, Brazil.
Neotrop Entomol. 2021 Jun;50(3):470-475. doi: 10.1007/s13744-021-00850-w. Epub 2021 Mar 1.
The American grapevine moth (AGVM), Lasiothyris luminosa (Razowski & Becker) (Lepidoptera: Tortricidae), was recently registered as a new pest for table grapes in the Northeast region of Brazil. In the present study, two approaches were made aiming to aid information to support management strategies for the new pest control: (i) study AGVM biology in the laboratory and its population dynamics in the field and (ii) evaluate Trichogramma pretiosum Riley as a potential biological control method against L. luminosa. The AGVM population dynamics showed a similar trend in the three grapevine monitored vineyards. The larvae started occurring at 30 days after pruning (DAP), pre-bloom stage, with a peak population between 54 and 78 DAP, following a decrease until harvest. The AGVM females larva, pupa, and egg-adult period were longer than males. The egg-adult period was 42.1 and 45.2 days for male and females, respectively. Trichogramma pretiosum was able to parasitize L. luminosa eggs. The T. pretiosum egg-adult period was 10.2 days with a 98.5% pupa survivorship at 25 °C. The release of T. pretiosum in the vineyards resulted in 65.5 to 73.2% AGVM egg parasitism. Our findings bring the first biological and population dynamics information for L. luminosa, which can help developing efficient approaches to monitor and control the pest in grapevines. The release of T. pretiosum in the vineyard is a potential biological control option to AGVM.
美国葡萄蔓蛾 (AGVM)，Lasiothyris luminosa (Razowski & Becker)（鳞翅目：卷蛾科），最近被登记为巴西东北部地区鲜食葡萄的新害虫。在本研究中，采用了两种方法来辅助信息支持新害虫的管理策略：（i）在实验室研究 AGVM 生物学及其在田间的种群动态，（ii）评估 Trichogramma pretiosum Riley 作为防治 L. luminosa 的潜在生物防治方法。AGVM 种群动态在三个监测葡萄园的葡萄藤中表现出相似的趋势。幼虫在修剪后 30 天（DAP），开花前阶段开始发生，在 54 到 78 DAP 之间达到高峰，随后下降直到收获。AGVM 雌性幼虫、蛹和卵-成虫期比雄性长。雌雄的卵-成虫期分别为 42.1 和 45.2 天。Trichogramma pretiosum 能够寄生 L. luminosa 卵。T. pretiosum 的卵-成虫期为 10.2 天，在 25°C 时，蛹存活率为 98.5%。在葡萄园释放 T. pretiosum 导致 AGVM 卵的寄生率达到 65.5%至 73.2%。我们的研究结果为 L. luminosa 提供了首次生物学和种群动态信息，这有助于开发有效的方法来监测和控制葡萄藤中的害虫。在葡萄园释放 T. pretiosum 是防治 AGVM 的一种潜在生物防治选择。
