Ramshorn snail (genus Gyraulus)

The Gyraulus genus belongs to the family Planorbidae, comprising small freshwater snails. In agricultural contexts, particularly within hydroponics, aquaponics, and specialized greenhouse vegetable production, these snails are categorized as pests that disrupt plant growth and technical efficiency.

These mollusks predominantly damage aquatic crops such as lettuce, herbs, and leafy greens. They are frequently encountered in systems where water is recirculated, making their way into tanks, irrigation pipes, and seedling trays where they cause significant aesthetic and structural damage to young plants.

Biologically, these snails are highly adaptable, exhibiting rapid reproduction rates and the ability to thrive in stable nutrient-rich environments. They deposit egg clutches on the undersides of leaves and internal surfaces of plumbing, making them difficult to detect until the population reaches high density.

The damage caused by Gyraulus involves scraping leaf tissue and feeding on succulent plant parts, which leads to stunted growth and reduced marketability of the produce. Furthermore, their presence often clogs irrigation nozzles and filters, leading to pump failures and potential spread of aquatic plant diseases.

Management strategies focus on strict biosecurity and mechanical control. Implementing fine-mesh filtration at the water intake is essential. Regular cleaning of hydroponic channels and manual removal of egg masses from surfaces are considered the most effective practices for limiting population outbreaks without using chemical molluscicides.

• Mechanical removal of adults
• Fine-mesh water filtration
• Regular inspection of roots and leaves
• UV water treatment