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All marine cone snails are venomous and can sting when handled. Their venom is a complex mixture of toxins, some fast-acting and others slower but deadlier. [44] Many painful stings have been reported, and a few fatalities. [43] Only a few larger species of cone snails are likely to be seriously dangerous to humans. [48]
Humans killed per year Animal Humans killed per year Animal Humans killed per year 1 Mosquitoes: 1,000,000 [a] Mosquitoes 750,000 Mosquitoes 725,000 2 Humans 475,000 Humans (homicide) 437,000 Snakes 50,000 3 Snakes: 50,000 Snakes 100,000 Dogs 25,000 4 Dogs: 25,000 [b] Dogs 35,000 Tsetse flies 10,000 5 Tsetse flies: 10,000 [c] Freshwater snails ...
Freshwater snails are widely known to be hosts in the lifecycles of a variety of human and animal parasites, particularly trematodes (or "flukes"). Some of these relations for prosobranch snails include Oncomelania in the family Pomatiopsidae as hosts of Schistosoma, and Bithynia, Parafossarulus and Amnicola as hosts of Opisthorchis. [14]
While transmission typically occurs only in countries where the freshwater snails are native, a case in Germany was reported where a man got schistosomiasis from an infected snail in his aquarium. [40] Humans encounter larvae of the schistosome parasite when they enter contaminated water while bathing, playing, swimming, washing, fishing, or ...
Most of the cone snails that hunt worms are not a risk to humans, with the exception of larger species. One of the fish-eating species, the geography cone, Conus geographus , is also known colloquially as the "cigarette snail", a gallows humor exaggeration implying that, when stung by this creature, the victim will have only enough time to ...
The website says the spider tends avoid confrontation with humans. The spider does have small fangs, but they are only strong enough to eat other insects. Joro Spider (Trichonephila clavata)
Melanoides tuberculata is known to carry certain parasites which can be dangerous to humans. Pinto & de Melo (2011) [32] compiled a checklist of 37 species of trematode parasites from this species of snail. [32] Eleven of those trematodes are also parasites of human. [32] These snails serve as first intermediate host for parasites which include ...
While roughly 3,000 species of spiders are found throughout the U.S., very few pose a direct threat to humans. Spider bites are rare, and medically significant incidents are even less common ...