Cause # 3: Food poisoning. Food poisoning occurs when the food you eat is infected by bacteria. Examples of such areCampylobacter, Salmonella, Shigella, E. coli, Listeria, etc. Common symptoms of food poisoning are fever, abdominal pain, diarrhoea, uneasiness, nausea and vomiting. What you can do about it.
Return to main Ciliophora page. Paramecium are the most commonly observed protozoans and, depending on the species, they are from 100-350 um long. They are easily maintained and cultured and Paramecium caudatum (shown at the left) are characterized by a large macronucleus and a single compact micronucleus.
The living gastropod species that has the largest (longest) shell is Syrinx aruanus with a maximum shell length of 0.91 m (3.0 ft), a weight of 18 kg (40 lb) and a width of 96 cm (38 in). Another giant species is Melo amphora, which in a 1974 specimen from West Australia, measured 0.71 m (2.3 ft) long, had a maximum girth of 0.97 m (3.2 ft) and weighed 16 kg (35 lb).