Higher classification Littoraria | Superfamily Littorinoidea Genus Littoraria Phylum Mollusca Rank Species | |
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Similar Littoraria, Gastropods, Molluscs, Spartina alterniflora, Littorinidae | ||
Marsh periwinkle littoraria irrorata
Littoraria irrorata, common name the Marsh periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae.
Contents
- Marsh periwinkle littoraria irrorata
- Littoraria irrorata say 1822 marsh periwinkle snail
- Description
- Distribution
- Feeding habits
- Habitat
- References
This species occurs in salt marshes on the Atlantic coast and Gulf Coast of North America, from Massachusetts to Texas.
Some colonies of this species of snail are the only mollusks known to practice fungiculture.
Littoraria irrorata say 1822 marsh periwinkle snail
Description
The maximum recorded shell length is 29.2 mm.
Distribution
This species can be found along Ireland, the Northwest Atlantic Ocean and the Gulf of Mexico.
Feeding habits
Littoraria irrorata feeds on fungi that it encourages to grow. It creates and maintains wounds on the grass, Spartina alterniflora, which are then infected by fungi, probably of the Phaeosphaeria and Mycosphaerella genera. Such fungi are the preferred diet of the snail. L. irrorata also deposits faeces on the wounds that they create, which encourage the growth of the fungi because they are rich in nitrogen and fungal hyphae. Juvenile snails raised on uninfected leaves do not grow and are more likely to die, indicating the importance of the fungi in the diet of L. irrorata.
Habitat
The minimum recorded depth for this species is 0 m; maximum recorded depth is 22 m.
