Bursa rhodostoma
| Bursa rhodostoma | ||||||||||||
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Housing of the bursa rhodostoma thomae |
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| Scientific name | ||||||||||||
| Bursa rhodostoma | ||||||||||||
| ( GB Sowerby II , 1835) |
Bursa rhodostoma is the name of a predatory living snail from the family of the frog screws that both the Red Sea and the Indo-Pacific and the western Atlantic is widespread.
features
The egg-shaped snail shell of Bursa rhodostoma has a short thread with a flat seam. The pink case mouth is set with white teeth. The case is sculptured with protruding axial buttons that run between powerful lateral varices and spiral strings of globules. The housing opening is almost circular with a flat front siphon channel and a short rear channel. The outer lip of the case mouth is curled and finely serrated on the inside, the parietal wall folded over irregularly. The surface is cream-colored with brown spots, the inside of the case mouth is pink, the folds and teeth are white. The house reaches around 2.6 cm in adult snails, length with a diameter of about 2.1 cm.
distribution and habitat
Bursa rhodostoma is common in the Indo-Pacific . The subspecies Bursa rhodostoma thomae Orbigny occurs just as in the Indian ( Mauritius ) and Pacific Ocean ( Marquesas ) in the western Atlantic Ocean ( Grand Cayman , Florida , Hispaniola , Virgin Islands , Brazil ). The snail is found mainly on coral reefs at depths of 13 to 160 m, often in dead coral heads.
Life cycle
Like other frog snails, Bursa rhodostoma is sexually separate. The male mates with the female with his penis . Veliger larvae hatch from the eggs and live as plankton until they have metamorphosed into the finished snail.
food
Bursa rhodostoma eats poly-bristles , syringe worms and echinoderms , including sea urchins .
Web links
- Fischhaus Zepkow: Family Bursidae - frog snails
- Underwater Kwajalein: Bursa rhodostoma (Linnaeus, 1758)
- Bursidae: Bursa rhodostoma (Linnaeus, 1758). 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. p. 552.
Individual evidence
- ^ A b c E. Alison Kay: Hawaiian Marine Shells. Bishop Museum Press, 1979. p. 229.
- ↑ Underwater Kwajalein: Family Bursidae - Bursa rhodostoma (Sowerby, 1835) (...) eating an Echinothrix urchin , August 10, 2010 / September 12, 2011; accessed on April 18, 2018.