True limpets

These pests primarily affect mariculture crops, such as edible algae and halophytic plants. By utilizing their radula—a tongue-like structure with rows of teeth—they scrape off the outer layers of plant tissues. This destructive feeding behavior impairs the physiological functions of the crops, leading to stunted growth, reduced biomass, and potential plant death.

The biological cycle of Patellidae involves a planktonic larval stage followed by a sessile adult life. Their ability to adhere strongly to solid substrates allows them to dominate hard surfaces within farming infrastructure. They are highly resilient to fluctuations in tidal zones, which makes their eradication from aquaculture installations a constant challenge for farmers.

The damage caused by these limpets includes visible scarring and localized destruction of leaf or stem tissues. Beyond direct grazing, their presence can attract other opportunistic pathogens, which exploit the wounded tissue. High densities of Patellidae can significantly decrease the economic viability of a harvest by compromising the structural integrity of the plants.

• Regular manual inspection and removal of limpets from infrastructure.
• Installation of fine-mesh barriers to prevent larval colonization.
• Monitoring water salinity levels to discourage settlement.
• Strategic harvesting timing to avoid peak limpet reproductive cycles.

Effective control strategies require a combination of physical and environmental management. Maintaining clean equipment and limiting access to the water intake pipes are critical steps in preventing infestations. In severe cases, modifying the substrate texture or using anti-fouling measures that are safe for crops is recommended to reduce the limpet population.