Research conducted at the Great Lakes Forestry Centre in Sault Ste. Marie, Ontario, has highlighted new concerns regarding an invasive insect nearing the Canadian border. According to Amanda Roe, a research scientist with Natural Resources Canada at the forestry centre, studies have revealed that the eggs of the spotted lanternfly can endure extremely low temperatures, surviving as low as -25 degrees Celsius. This resilience suggests that winter conditions may not be sufficient to prevent the harmful pest from establishing populations in various parts of Canada.
Originating from Asia, the spotted lanternfly is a destructive sap-sucking insect that uses straw-like mouthparts to extract sap from trees and plants. First identified in the United States in 2014, the insect has rapidly spread across the eastern U.S., with populations now established in at least 19 states, including Michigan and New York, as well as areas along Lake Erie.
The insect’s impact extends to over 100 plant species, with a significant focus on grape production, as noted by Olivier Morin, a plant health survey biologist with the Canadian Food Inspection Agency. In infested regions of the U.S., vineyards and agricultural operations have faced substantial challenges due to the spotted lanternfly. The insect’s feeding habits can reduce crop yields, weaken plants, and lead to the secretion of honeydew, a sugary waste that fosters mold growth on surfaces.
Furthermore, the spotted lanternfly poses a threat to maple trees, a matter of concern for Canada’s maple syrup industry. The Ontario Maple Syrup Association has been monitoring the insect’s presence for three years to better understand the potential risks it poses, especially to maple syrup production.
While current research sheds light on the insect’s cold tolerance, there remains uncertainty about its adaptability in new environments over time. Human activities play a significant role in the insect’s spread, with spotted lanternflies being adept hitchhikers, often traveling long distances by attaching themselves to vehicles, cargo, and outdoor equipment. The Canadian Food Inspection Agency has intercepted spotted lanternflies on incoming shipments and vehicles from the U.S., indicating a looming threat of establishment in Canada.
In case of spotting a spotted lanternfly, individuals are advised to capture the insect if possible, seal it in a container, and report it to the Canadian Food Inspection Agency. Despite efforts to slow the spread of the insect, it is anticipated that the spotted lanternfly will eventually reach and spread within Canada, necessitating proactive measures to mitigate its impact.
