Just like carnivorous animals such as eagles and owls, fireflies, which eat snails and shellfish, occupy a high position on the food chain. If lower links in the chain are affected, it will influence the fireflies 'living conditions. Thus, these insects serve as an excellent gauge of the condition of the natural environment.
就像大冠鷲、貓頭鷹等肉食性動物，吃蝸牛、螺貝類的螢火蟲在食物鏈金字塔中也位居高層，一旦下層的螺絲鬆動，就會影響牠的存活條件，因此常被視為檢驗生態環境良莠的指標性昆蟲。