Brown cone snail

The Brown cone snail (Conus brunneus) is a predatory marine gastropod belonging to the Conidae family. While not a pest to terrestrial plants, this species is considered a significant threat to marine-based agriculture and aquaculture systems where it can decimate local populations of cultivated mollusks and other small aquatic organisms.

Regarding its biology, Conus brunneus is a highly specialized predator. Its life cycle involves a planktonic larval stage followed by a benthic phase as an adult. They occupy rocky habitats and reefs, using a sophisticated harpoon-like apparatus to inject venom, which paralyzes their prey almost instantaneously upon contact.

The damage caused by this pest is primarily predatory. In aquaculture settings, these snails can infiltrate containment areas and prey on the juvenile stages of commercially important species. Due to their stealth and toxic capabilities, they can significantly reduce yields in open-water farming systems if left unchecked.

The economic harm is reflected in the loss of biological stock. Because the Brown cone snail is a nocturnal and efficient hunter, it can eradicate large numbers of sessile or slow-moving invertebrates in a relatively short timeframe, leading to measurable losses for aquaculture businesses operating in tropical coastal zones.

Control measures primarily involve physical removal and the installation of protective mesh barriers.

• Regular inspection of rearing cages.
• Hand-picking individuals during low tide or night surveys.
• Maintaining clean substrates to reduce hiding spots.