Introduction
Not all pine trees are equally affected by the pine processionary moth. This article explores how different pine species vary in their susceptibility to Thaumetopea pityocampa, helping guide planting and forest management decisions.
1. Preferred Host Pines
- The moth shows strong preference for Pinus nigra (black pine) and Pinus radiata.
- These species often support larger colonies and suffer more severe defoliation.
2. Less Susceptible Species
- Pinus sylvestris (Scots pine) and Pinus halepensis (Aleppo pine) are generally less attractive to females for oviposition.
- Larval development may be slower or less successful on these species.
3. Influence of Tree Age and Health
- Younger and stressed trees are often more vulnerable to infestation.
- Dense monocultures increase risk, while mixed stands may reduce attack levels.
4. Implications for Landscape Management
- Choosing less susceptible pine species in urban and periurban plantings can reduce infestation risk.
- Forest diversification strategies help build resilience against Thaumetopea pityocampa.
Conclusion
Tree species selection plays a vital role in preventing or limiting pine processionary moth outbreaks. A thoughtful approach to planting can support pest resistance and forest health.
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