Tree Fruit Research & Extension Center

Enhancing Western Orchard Biological Control

Research Highlights

Graduate Student Projects

Nik Wiman, a PhD student in Dr. Vince Jones' Insect Ecology lab at WSU-TFREC, is studing the interaction between leafrollers and various natural enemies. The following video shows the activity of female Tachinid flies attacking leafroller larvae. The first segment shows a species that attaches eggs to the body of the leafroller using a telescoping ovipositor. A maggot will emerge from the eggs and develop inside the leafroller host and ultimately kill it. The next segment shows a different tachinid species laying eggs onto the surface of an apple leaf (in slow motion). With this species the maggot emerges from the egg and must find the leafroller and bore into it for parasitism to occur. The final segment is of a mature tachinid maggot after it has killed and emerged from the leafroller.

 

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