United States: A new CABI-led study examines the relationship between two natural enemies of brown marmorated stink bug pest

Published 2022년 1월 24일

Tridge summary

A study led by CABI, in collaboration with the MARA-CABI Joint Laboratory for Bio-safety and Agriculture and Agri-Food Canada, has explored the competitive interaction between two natural enemies of the brown marmorated stink bug, the Asian Samurai Wasp (Trissolcus japonicus) and T. cultratus. Published in Ecology and Evolution, the research reveals that while T. cultratus outcompets Samurai Wasp larvae, Samurai Wasp is a superior adult competitor, guarding its egg masses more aggressively. This finding suggests that both species can coexist through counterbalance competition, where the inferior larval competitor, in this case Samurai Wasp, has superior adult host exploitation abilities. This research is of significant importance in understanding the dynamics of natural enemies combating the brown marmorated stink bug, a global pest that causes substantial crop damage.

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Original content

A new CABI-led study has examined the relationship between two closely-related natural enemies of the brown marmorated stink bug in respect of how they interact when trying to attack the fruit and nut pest’s egg masses.The brown marmorated stink bug is a global pest which in 2016 caused $60m worth of damage to Georgia’s hazelnut (a third of its crop) and in 2010, $37m worth of apples were destroyed in parts of the USA.Dr Tim Haye, an expert on the brown marmorated stink bug (Halyomorpha halys) based at CABI’s centre in Switzerland, teamed up with researchers from the MARA-CABI Joint Laboratory for Bio-safety and Agriculture and Agri-Food Canada, to understand how competition between two scelionid parasitoids on the stink bug’s eggs may provide insight into how they may coexist to fight the devastating crop pest.Leading the fightCABI is leading the fight to see if the Asian Samurai Wasp (Trissolcus japonicus) can be used as a natural enemy to control the pest. The latest research, ...

Source: Cabi