Search results
Results From The WOW.Com Content Network
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 >20,000 Crocodiles
Schistosomes from freshwater snails [5] ... Each year, it is estimated that between 4,400 and 200,000 individuals succumb to it. ... Deaths from schistosomiasis per ...
20,000–200,000 per year Gastropod-borne parasitic diseases (GPDs) are a group of infectious diseases that require a gastropod species to serve as an intermediate host for a parasitic organism (typically a nematode or trematode ) that can infect humans upon ingesting the parasite or coming into contact with contaminated water sources. [ 1 ]
Biomphalaria glabrata snails lay egg masses at rather a high rate (about 1 per day). [5] One snail can lay 14,000 eggs during its whole life span. [32] The periostracum of the embryonic shell (inside the egg) begin to grow in 48-hour old embryos. [34] Amorphous calcium carbonate appear in 54-60-hour old embryos. [34]
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.
Physella acuta is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Common names include European physa, tadpole snail, bladder snail, and acute bladder snail.
The average number of newborn snails in the wild is 0.24 snails per day (50 per year) [11] [21] or up to 0.55 snails per day in the laboratory. [11] Each gravid female carries 19–21 embryos inside her. [11] Generation time is quite short at about four months. [7] [11] The species can have three generations per year in the aquarium. [11]
Lymnaea stagnalis, better known as the great pond snail, is a species of large air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae. The great pond snail is a model organism to study parasitology, neurology, embryonal development and genetic regulation.