PncA

Pila
File:Pila globosa.jpg Pila globosa
regnum	Animalia
phylum	Mollusca
classis	Gastropoda

Pila is a genus of freshwater snails, aquatic gastropod mollusks in the family Ampullariidae, commonly known as apple snails. These snails are notable for their large, globular shells and their ability to survive in both aquatic and terrestrial environments.

Description

Pila species are characterized by their large, rounded shells, which can vary in color from green to brown. The shells have a smooth surface and a prominent operculum, which the snail uses to close its shell opening. This operculum is a key adaptation that allows Pila to survive in fluctuating water levels by sealing in moisture when the snail is on land.

Habitat

Pila snails are typically found in freshwater habitats such as ponds, lakes, and slow-moving rivers. They are well adapted to environments that experience seasonal changes in water availability. During dry periods, Pila can aestivate by burrowing into the mud and sealing their shells with the operculum to prevent desiccation.

Distribution

The genus Pila is distributed across tropical and subtropical regions of Africa and Asia. They are particularly common in the Indian subcontinent, where they are often found in rice paddies and other agricultural areas.

Ecological Role

Pila snails play a significant role in their ecosystems as both herbivores and prey. They feed on a variety of plant materials, including algae and detritus, contributing to the nutrient cycling in aquatic environments. In turn, they serve as a food source for a variety of predators, including birds, fish, and mammals.

Human Use

In some cultures, Pila snails are harvested for food. They are considered a delicacy in parts of Asia and Africa, where they are prepared in various culinary dishes. Additionally, Pila shells are sometimes used in traditional medicine and as decorative items.

Conservation

While Pila snails are not currently considered endangered, their populations can be affected by habitat destruction, pollution, and the introduction of invasive species. Conservation efforts focus on preserving their natural habitats and maintaining the ecological balance of the ecosystems they inhabit.

Also see

• Ampullariidae
• Gastropoda
• Freshwater snail
• Mollusca