Molluscs
125
Pila virens Lamarck 1822
Common name: Apple snail.
Distribution: Southern India (Budha
and Madhyastha, 2010).
Habitat: Lentic and lotic habitats such as
streams, ponds, tanks, paddy fields.
Description: This species has a globose shell with a sharp spire. Height of
the shell is from 40 to 65 mm. Shallow
sutures (angle 90° and more) and
medium-sized umbilicus are present.
The shell surface is smooth in most
cases, although more eroded forms
are also seen. The color can vary from
uniform yellow-olive to dark brown.
Reddish brown spiral bands can be
absent at the outside in some varieties.
Operculum is corneous and calcified at
the inside in older snails (Dey, 2007).
Nutritional Facts
Proximate Composition (mg/g WW)
CHO a Glycogen Protein
Free
AA Lipid
Free
FA
11.6
3.1
49.4
4.8 29.6 19.7
a Carbohydrate.
Source: Data from Janakiram et al. (1983).
Lanistes libycus Morelet 1848
Order: Architaenioglossa
Family: Ampullariidae
Common name: Freshwater snail.
Distribution: West Africa (Jørgensen
et al., 2010).
Habitat: Lakes, marshes, and streams.