Pomacea paludosa (Say, 1829)

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Pomacea paludosa
Pomacea paludosa, the Florida / cuba apple snail.
(picture not licenced under creative commons)
Pomacea paludosa
Pomacea paludosa.
(picture not licenced under creative commons)
Pomacea paludosa
Pomacea paludosa.
(picture not licenced under creative commons)
Pomacea paludosa
Pomacea paludosa.
(picture not licenced under creative commons)
Pomacea paludosa
Pomacea paludosa.
(picture not licenced under creative commons)
Pomacea paludosa
Pomacea paludosa.
(picture not licenced under creative commons)

Shell: globose; shell opening (aperture) large, oval,  large and deep umbilicus; 40-55 mm wide, 45-65 mm high.
Colour: yellow to green with reddish streaks, dark spiral bands.
Operculum:
Body: Pale grey foot, with black pigment on the upper side of the body.
Eggs: The white to slightly pinkish eggs are laid on emerging stems of vegetation. The clutches of 10 to 80 eggs, are losely packed together.
Compared with mmany other Pomacea species, the eggs of Pomacea paludosa are relatively big, about 3 to 6 mm diameter.
The young snails appear after 2 or more weeks and drop into the water. Due to their relatively big size when born, these snails are less sensitive to desiccation than their smaller counterparts of other species like Pomacea flagellata. An important advantage given the conditions that occur in their habitat (swamps). A similar egg strategy has been observed in Pomacea urcues, which inhabits temporary water bodies in the Venezualan savanna.

Pomacea  paludosa
Pomacea paludosa, the Florida / cuba apple snail. Female depositing her eggs on a branch.
(picture not licenced under creative commons)
Pomacea  paludosa
Pomacea paludosa, the Florida / cuba apple snail.
(picture not licenced under creative commons)
Pomacea  paludosa
Eggs from Pomacea paludosa. Size of the eggs: 3 - 6 mm.
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Pomacea  paludosa
Pomacea paludosa hatchlings between the remnants of the eggs.
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Pomacea  paludosa
Pomacea paludosa hatchlings.
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Behaviour: amphibious animal; submerged during the day, hidden in the vegetation near the border and the surface. More active during the night, also leaves the water in search for fresh vegetation.
When disturbed they let themselves fall on the bottom to hide in the mud.
Distribution:
south-east U.S.A. (Florida) and Cuba. Has recently spread to Hawaii (only local populations).  Pomacea paludosa can be found in the aquarium trade, although not very common.
Fossil records: Fossil Pomacea paludosa shells can be found in the Bermont formation in Florida (Pleistocene).

Pomacea  paludosa
Fossil shell of Pomacea paludosa, from the Bermont Formation (Florida, USA, middle Pleistocene: 800.000-200.000 years ago).
(picture not licenced under creative commons)

 

Thanks to, and for the use of their photographs.

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