Gallerucella Calmariensis

Battle against beetle continues in 2011

April 28, 2011 // 0 Comments

The beetle battle against purple loosestrife that began in May of 2007 continues in May of 2011. Like with so many non native invasive species “control” is all we have to work with. In this case that is the good news, because in so many others we have no control at all or if we do it is a chemical control. But we need to work to keep the news good and the invader under control. I want to share a little of what I have learned from this effort over the past four years. First that there are always some folks ready and willing to get involved on a worthy project. Absolutely great and I thank each and every person and organization for their effort! One thing that had me wondering almost from the beginning is if the control is so good why is it I can go back every year to some of my original sources for beetles for more beetles. I remember going back to one very infested spot one year to gather some beetles and there were absolutely none to be found or purple loosestrife. The only variable I noticed was that when there is around a foot of water the Loosestrife is growing in the beetles were not very effective but beetles are generally there. When there is little water or at a shore line the beetles were effective and not there the next year. The good news from this is I/we can always get beetles for spreading around. Why would that be because in most cases the beetles we place effectively reducing the infestation allowing native plants to regain their natural strength? I contacted an expert at MSU and shared what I am experiencing and found that is their experience too. It has something to do with the winter hibernation of the beetle and I’m not sure hibernation is the correct term but I suspect you understand what I mean. It is important to understand and remember that this beetle eats absolutely nothing else so eats itself out of house and home. So here we go again in May 2011 spreading the Purple Loosestrife control beetle Gallerucella calmariensis, and volunteers are the key again. This program has lots of […]