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Otala lactea, known as the milk snail or Spanish snail, is a large, edible [3] species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk, in the family Helicidae, the typical snails. [4] Archaeological recovery at the Ancient Roman site of Volubilis, in Morocco, illustrates prehistoric exploitation of O. lactea by humans. [5]
Freshwater snails are indirectly among the deadliest animals to humans, as they carry parasitic worms that cause schistosomiasis, a disease estimated to kill between 10,000 and 200,000 people annually. [1] [2]
Snails are eaten by humans in many areas such as Africa, Southeast Asia and Mediterranean Europe, while in other cultures, snails are seen as a taboo food. In English, edible land snails are commonly called escargot, from the French word for 'snail'. [1] Snails as a food date back to ancient times, with numerous cultures worldwide having ...
They use this siphon in order to breathe air while they are submerged in water which has a low oxygen content so they cannot effectively use their gill. [ 6 ] Apple snails use the siphon in a way that is reminiscent of a human swimmer using a snorkel , except that the apple snail's siphon can be retracted completely, or extended to various ...
Aquatic animals are important to humans as a source of food (i.e. seafood) and as raw material for fodders (e.g. feeder fish and fish meal), pharmaceuticals (e.g. fish oil, krill oil, cytarabine and bryostatin) and various industrial chemicals (e.g. chitin and bioplastics, formerly also whale oil).
The radula works like a file, ripping food into small pieces. Many snails are herbivorous, eating plants or rasping algae from surfaces with their radulae, though a few land species and many marine species are omnivores or predatory carnivores. Snails cannot absorb colored pigments when eating paper or cardboard so their feces are also colored. [3]
"You need microbes to eat the organic matter," Lubnow said. "They need oxygen." Preliminary cost estimates for the oxygenation project are as high as $2.5 million.
Snails can be bred in boxes or cages stacked several units high. An automatic sprinkler system can be used to provide moisture. Breeding cages need a feed trough and a water trough. Plastic trays a couple of inches deep are adequate; deeper water troughs increase the chance of snails drowning in them. Trays can be set on a bed of small gravel.