Toad snail
| Toad snail | ||||||||||||
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Casing of purpura bufo |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Purpura bufo | ||||||||||||
| Lamarck , 1822 |
The toad purple snail ( Purpura bufo ) is a snail from the family of spiny snails that is common in the Indo-Pacific .
features
The large, heavy, thick-walled snail shell of Purpura bufo , which in adult snails can reach a length of up to 6.5 cm, has a strongly inflated body and a short thread. The corridor, which takes up a large part of the shell, is sculpted with broad brown and white spiral ribs that are separated from one another by narrow channels. There are also large, clearly separated nodes. The parietal callus is wide and thick. The outer lip of the case mouth is curved outward. The case has no navel. The posterior canal is deep, the anterior siphon canal bent upwards. The spindle and the inside of the case mouth are white or pink.
Distribution, habitat and way of life
The purple toad snail is widespread in the Indo-Pacific from the coasts of South and East Africa to Papua New Guinea , north to Japan and south to Queensland and is particularly common on the coasts of India . It lives in the intertidal zone on rocks and sand, but also in estuaries.
nutrition
Purpura bufo eats both mussels and barnacles , in whose shell it drills a hole in order to access the meat.
Life cycle
Like other new snails, Purpura bufo is sexually separated, with the female being slightly larger. The male mates with the female with his penis , the mating season being from January to June. Many females usually come together to lay their eggs. They put their long-stalked, yellow or purple, cylindrical egg capsules together on leaf-like structures and attach them to the rocky substrate. Free-swimming Veliger larvae hatch from the opening at the upper end of the capsule , and after a phase they sink as zooplankton and metamorphose into small snails .
Importance to humans
Purpura bufo is collected in India for its meat.
literature
- Sangeeta M. Sonak (1997): Marine Shells of Goa: A Guide to Identification. SIDA / Department for Research Cooperation, SAREC. Tyler's Academic Books, Bangor (Wales) 1997. Purpura bufo : p. 115.
Web links
- Muricidae: Thais bufo (Lamarck, 1822) . 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. 567.
- Fischhaus Zepkow: Family Muricidae - spiny snails
Individual evidence
- ↑ a b K. S. Sundaram (1974): IV Edible Gastropods. CMFRI Bulletin No. 25, The Commercial molluscs of India. CMFRI, Mandapam Camp, pp. 54–62, here p. 60.
- ^ RC Rajalakshmi Bhanu, K. Shyamasundari, K. Hanumantha Rao (1983): Embryogenesis and organogenesis in the intertidal gastropod Thais bufo (Lamarck). Hydrobiologia 99 (1), pp. 23-27.