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Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers.
These snails have rounded shells with a high spire, an oval aperture, and a siphonal notch. This family of snails is found worldwide. These snails are found mostly in shallow water, on sandy or muddy substrates, often intertidally, but sometimes in deep water. They can be present in very large numbers in suitable habitat.
The flukes have a complex life cycle with freshwater snails as intermediate hosts; people swimming or washing in the water are at risk of infection. [52] Molluscs can also carry angiostrongyliasis , a disease caused by the worms of the Angiostrongylus spp., which can occur after voluntarily or inadvertently consuming raw snails, slugs, other ...
These snails can survive in aestivation for a few months when removed from their freshwater habitat or when the habitat dries out. [28] For example, the snail lives in banana plantation drains in Saint Lucia. [29] Biomphalaria glabrata can also survive up to 16 hours in anaerobic water using lactic acid fermentation. [30]
[29] [30] The dog conch can be found in littoral and sublittoral zones, from shallow water to a depth of 55 m (180 ft). [1] It is normally found in large colonies, [17] and is usually abundant wherever it occurs. [31] One known predator of the dog conch is the cloth-of-gold cone snail, Conus textile.
Cone snail venom apparatus. There are approximately 30 records of humans killed by cone snails. Human victims suffer little pain, because the venom contains an analgesic component. Some species reportedly can kill a human in under five minutes, thus the name "cigarette snail" as supposedly one only has time to smoke a cigarette before dying.
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The incubation period in dogs is 5–7 days, although it may take as long as 33 days. After onset, there is a sharp fever coupled with anorexia, vomiting and dysentery. The rickettsia attacks the canine's lymph system causing enlarging and eventually hemorrhaging many of the lymphnodes. The disease can spread to other tissues such as leukocytes.