Bubble moon snail
| Bubble moon snail | ||||||||||||
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Neverita didyma |
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| Scientific name | ||||||||||||
| Neverita didyma | ||||||||||||
| ( Röding , 1798) |
The bladder moon snail or bladder umbilical snail ( Neverita didyma , syn .: Glossaulax didyma ) is a snail from the family of moon snails that is common in the Indo-Pacific .
features
The almost hemispherical, more wide than long, rather thin-shelled snail shell of Neverita didyma , which in adult snails with six rapidly increasing whorls reaches 5 to 8.5 cm wide, has a smooth surface with clearly visible growth strips. The upper passages as well as the upper part of the body passage are almost flat and form a slightly protruding conical thread that takes up almost a third of the height of the case. The wide and deep navel is covered in its upper half by a spiral-shaped bulge, which is colored light reddish brown and divided into two parts by a transverse furrow. The semicircular case mouth is crooked, the outer lip sharp-edged and the inner lip with thick calluses. The casing is colored reddish yellow, with blue towards the top towards the seam, the tip sometimes completely blue. The base is white, the inside of the mouth is dark red-brown in the upper part and white below.
The yellowish brown operculum of the bladder moon snail is thin, horny and has few, rapidly growing coils. It closes the housing completely.
Distribution and way of life
The bubble moon snail occurs in the Indian Ocean on the coasts of East Africa , Madagascar and India , also around Indonesia and in the Pacific Ocean to Japan and Australia . Neverita didyma lives on sandy and muddy soils in the intertidal zone and below a depth of 100 meters. Like other moon snails feed on Neverita didyma of clams and snails . The prey is grasped with the foot and a hole is drilled in the shell with the radula .
use
The bubble moon snail is collected for its meat and shells. In Thailand it is often fished with fishing nets at depths of 2 to 10 meters.
literature
- Betty Jean Piech: Naticidae and Personidae: A Classification of Recent Species . Delaware Museum of Natural History, Wilmington, DE 1998, 60 pp.
Individual evidence
- ↑ World Register of Marine Species , World Marine Mollusca database: Glossaulax didyma (Röding, 1798)
- ↑ Rodolfo Amando Philippi: The genera Natica and Amaura . Systematic Conchylia Cabinet. Nuremberg, 1852. 73. No. 86. Natica didyma . Bolten.
Web links
- Fischhaus Zepkow: Family Naticidae - moon snails
- Naticidae , p. 509ff. Polinices didyma (Röding, 1798) , p. 518 . From: JM Poutiers: Gastropods . In: Kent E. Carpenter, Volker H. Niem (eds.): FAO Species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 1: Seaweeds, corals, bivalves and gastropods. Food and Agriculture Organization of the United Nations, Rome, 1998.
- World Register of Marine Species , World Marine Mollusca database: Neverita didyma (Röding, 1798)