The Invasion of the Lanternfly

DNA

After capturing a SLF in Berks County last fall, researchers have found a way to sequence and assemble the spotted lanternfly’s genome. Using new technology, the genome was sequenced from one insect.  Typically, this would have required inbreeding the insect over many generations to complete the sequencing, to acquire all the data necessary to sequence the DNA.   However, the DNA from one SLF is as much genetic information the researchers need to track the past and learn more about their movement patterns. It could also potentially help scientists develop gene silencers which could prevent certain genes that allow the SLF to adapt and spread efficiently.

Trap Tree Method

Using pesticides to kill the SLF is not ideal because it harms plants and animals. Therefore, the PA Department of Agriculture has been using methods, called Integrated Pest Management (IPM), that specifically target the plants that host the SLF. IPM kills about 90% of the host trees that are female and leaves the remaining host trees to remain as trap trees. Trap trees are treated with insecticide that will kill the lanternfly when they feed. Though the concern is whether the use of pesticides will impact the surrounding wildlife, the chemicals are being used thoughtfully and judiciously according to Penn State Extension’s SLF expert, Emilie Swackhamer. The pesticides are only being applied to the base and the trunk of the tree. 

Pheromones

Sex attractant trap techniques involves using pheromones that mimic the  way that females SLF’s attract males. The goal is to trap and exterminate male SLF but this method has been largely unsuccessful.