Banded pit snail
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Banded pit snail ( Lacuna vincta ) |
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| Lacuna vincta | ||||||||||||
| ( Montagu , 1803) |
The banded pit snail ( Lacuna vincta ) is a snail from the subfamily of the pit snail (order Sorbeoconcha ), and has many characteristics similar to the flat pit snail . The name comes from the red spiral bands on the case .
Appearance
The animal has a delicate, cone-shaped house in yellow or red-brown, plus red spiral bands, while the navel of the housing is white. This is much narrower compared to the related species already mentioned, the flat pit snail. The house has up to five entrances, but they are not arched so that it is only one centimeter high. The mouth is wide and ovoid, it is about half the height of the case.
Occurrence
This species is found on flat algae, especially on laminariums on sheltered coasts. The snails cavort on the edges of the waters of the Atlantic and its tributaries, the English Channel , North Sea and western Baltic Sea . This snail is quite common on algae-rich coasts.
Way of life
In contrast to the flat pit snail, where the female is twice the size of the male, in the species Lacuna vincta both sexes are the same size. Characteristic are the white-yellow to pink-colored, ring-shaped egg clutches that can be found in spring. This strange clutch is deposited on large algae, especially the washed-up seaweed from the permanent flood zone are popular places and are often densely covered with spawning rings.
Small swimming larvae, known as veliger , hatch from the eggs, and before they develop into snails and the associated bottom life, they float around in the sea's plankton for two to three months .
swell
Taxonomy:
- Costello, MJ; Bouchet, P .; Boxshall, G .; Emblow, C .; Vanden Berghe, E. (2004). European Register of Marine Species ( http://www.marbef.org/data/erms.php ), accessed November 21, 2006. Record
