Will Old Nests Deter New Wasps?
Old wasp nests can sometimes deter new wasps from building nearby. Wasps are territorial and may avoid areas where a previous nest was located as the presence of an old nest can signal that the territory is already claimed. However, this deterrent effect is not guaranteed. In some cases, certain species of wasps may still choose to build nests in the same location, especially if the site is particularly favorable for nesting. Additionally, if the old nest is not removed, it could attract other pests or insects, which might draw in more wasps.
Factors Influencing Wasps' Nesting Decisions
Removing old nests as a precaution and keeping the area clean and free of food sources can help deter wasps from nesting in a specific location. For species that leave visible nests in the Eastern States, such as European Paper Wasps (Polistes dominula), it is common for them to reuse old nests. In one experiment, the author encouraged the wasps to move on by removing and burning the old nests. The wasps complied, showing that they can be deterred with appropriate measures.
Wasps have a unique way of recycling old nests. The “paper” from the old nest can be used to make a new nest, which is a much easier process than the original method of stripping wood from a twig, chewing it into a mushy pulp, and making brand new paper. New generations of wasps will often recycle some of the materials in an old nest to make their own nests.
Special Cases and Further Insights
Some species, such as hornets and yellowjackets, do not return to or reuse old paper nests. However, dermestid beetles and other insect scavengers can breed in the dry remains of wasps and their larvae and pupae that died inside the developmental cells of the nest. Most Polistes spp. paper wasps do not reuse nests from the previous year, but the European paper wasp (Polistes dominula) sometimes will.
Another fascinating fact is that leafcutting bees will sometimes rear their young in the empty developmental cells of old paper wasp nests. They cap the occupied cells with little discs cut from leaves and flower petals, showing the versatility of these old structures.
Understanding the behavior of wasps regarding old nests can help manage infestations more effectively. If you are dealing with wasp nests on your property, it's wise to consult a professional to ensure safe removal and prevent potential issues. Always take precautions to avoid disturbing wasp nests, as they can be harmful to humans.
In conclusion, while old wasp nests can sometimes deter new wasps, they can also attract other pests or be used for recycling by wasps. The behavior of wasps is complex and can vary greatly depending on the species and circumstances. Proper management and understanding of wasp behavior can help in controlling infestations and maintaining a safe environment.