Turbinella laevigata
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Turbinella laevigata |
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| Scientific name | ||||||||||||
| Turbinella laevigata | ||||||||||||
| Anton , 1838 |
Turbinella laevigata is the name of a snail from the family of turbinellidae (genus Turbinella ) attached to the Atlantic coast of Brazil is widespread.
features
The large snail shell of Turbinella laevigata , which is up to 20 cm long in adult snails, has 7 to 8 rounded whorls, which are only very flat sculpted spirally and of which the first two whorls form the teat-shaped protoconch . The body around it takes up about two thirds of the entire shell. The case mouth is rather small and elongated and has a sharp-edged outer lip. The white surface of the shell is covered with a rather thick brown periostracum .
Distribution and occurrence
Turbinella laevigata is endemic to the western Atlantic Ocean on the coast of Brazil between Amapá and Espírito Santo . It lives in shallow waters in the intertidal zone and up to 40 m deep, but was found up to 60 m deep off Amapá.
Life cycle
Like other new snails, Turbinella laevigata is segregated. The male mates with the female with his penis . The female lays clutches (oothecae) about 51 to 74 mm long and 38 to 45 mm wide, which consist of around 13 to 18 disc-shaped egg capsules with a convex and a concave side and a diameter of 16 to 40 mm and a thickness of 0.2 up to 0.6 mm. The capsules sit on a common basal membrane that is attached to a solid substrate such as the red alga Bryothamnion seaforthii via a solid stem . Each capsule contains about 240 eggs, which develop into snails within the egg capsule. Young animals before hatching had juvenile shells 5 to 8 mm long with three complete circumferences.
food
There are no nutritional publications for Turbinella laevigata . Other species of the Turbinella genus, as well as other genera in the Turbinellidae family, eat - in some cases exclusively - poly-bristle and injection worms .
Web links
Individual evidence
- ^ A b E. C. Rios: Seashells of Brazil. Fundação Cidade do Rio Grande, Fundação Universidade do Rio Grande, Museu Oceanográfico, 1985. p. 114.
- ↑ a b Helena Matthews-Cascon, Cristina de Almeida Rocha-Barreira, Carlos Meirelles, Gregorio Bigatti, Pablo Penchaszadeh (2009): Description of the Ootheca of Turbinella laevigata (Mollusca, Gastropoda). Braz. Arch. Biol. Technol. 52 (2), pp. 359-364.