Univ Federal do Paraná, Curitiba, Paraná, Brazil.
Empresa Brasileira de Pesquisa Agropecuária - Embrapa Soja, Londrina, Paraná, Brazil.
Neotrop Entomol. 2021 Jun;50(3):453-461. doi: 10.1007/s13744-021-00851-9. Epub 2021 Mar 18.
The competition between Telenomus podisi Ashmead and Trissolcus teretis (Johnson) parasitizing eggs of Diceraeus melacanthus (Dallas) and Euschistus heros (Fabricius) was studied in three different laboratory bioassays to gather knowledge in order to improve stink bug management and to strengthen the preservation of naturally occurring parasitoid species. The impact of parasitoid sequence and time intervals (4 to 192 h) between parasitoid species was evaluated. Competition of Te. podisi and Tr. teretis for the same host favored the parasitoid encountering the egg host first, as it usually outcompetes the second parasitoid. We conclude that it is unwarranted in a short-term goal to release both species together in augmentative biological control programs since the repeated release of Te. podisi led to higher parasitism than any other studied variation of parasitoid sequence. However, simultaneous release of multiple species could be important to help the preservation of the diversity of scelionids in the agroecosystem, a hypothesis that needs to be further investigated in future research.
研究了 Telenomus podisi Ashmead 和 Trissolcus teretis (Johnson) 寄生 Diceraeus melacanthus (Dallas) 和 Euschistus heros (Fabricius) 卵的竞争，以获得有关臭虫管理和加强自然发生寄生性物种保护的知识。评估了寄生蜂序列和种间时间间隔（4 至 192 小时）的影响。对于同一宿主，Te. podisi 和 Tr. teretis 的竞争有利于首先遇到卵宿主的寄生蜂，因为它通常会胜过第二种寄生蜂。我们的结论是，在短期内，在增强生物控制计划中同时释放这两个物种是没有道理的，因为重复释放 Te. podisi 导致的寄生率高于任何其他研究的寄生蜂序列变化。然而，同时释放多种物种可能对帮助保护农业生态系统中 scelionids 的多样性很重要，这一假设需要在未来的研究中进一步探讨。
