Indoplanorbis

Indoplanorbis (lat. Indoplanorbis exustus) is a species of freshwater air-breathing gastropod belonging to the Planorbidae family. While widely studied as an intermediate host for trematodes in veterinary medicine, it is also recognized as an aquatic pest that can significantly impact agricultural systems, particularly in rice-growing regions of Southeast Asia.

The primary crops threatened by Indoplanorbis are aquatic cultivars such as rice. The snails thrive in flooded fields and irrigation canals, where they feed on young seedlings. By rasping away the delicate plant tissues, they can severely stunt the growth of crops and, in cases of high population density, cause significant yield losses.

The biology of Indoplanorbis is characterized by high reproductive rates and environmental plasticity. Being hermaphroditic, individuals can reproduce efficiently, ensuring rapid colonization of suitable habitats. They lay eggs on submerged vegetation and debris, which allows them to easily disperse within interconnected water systems used for irrigation.

Damage caused by Indoplanorbis includes mechanical injury to leaves and stems, which weakens the plant and leaves it vulnerable to secondary infections. The presence of these snails in irrigation systems can lead to decreased water quality and the spread of pathogens, further exacerbating the stress on agricultural crops.

Management and protection strategies focus on disrupting the snail's habitat. Effective methods include periodic drainage of paddy fields to dehydrate the snails, manual removal of aquatic weeds from irrigation channels to reduce shelter, and the introduction of natural predators such as ducks or snail-eating fish. Chemical control using molluscicides should be implemented carefully to comply with local environmental regulations.