单词 | cercaria |
例句 | “Snails tend to release more cercariae in the mornings, and then as afternoon progresses it tends to taper off,” Hanington says. Creepy Swimmer's Itch Parasite in Northern Lakes Can Scratch Summer Fun 2017-05-29T04:00:00Z When the cercariae enter the blood stream of the final host, you would expect them to face rejection, like a kidney transplant from an incompatible donor. I named a parasite after Barack Obama. It was meant as a compliment. 2016-09-15T04:00:00Z Thus the cercariae, escaping from the snail find themselves on the grass whereupon they promptly drop their tails and stick themselves to the grass-blades. The Eye of Osiris The daughter redia or cercaria, as they are now termed, leave the body of the snail and finally become encysted on the stems of grass, cresses and weeds. Common Diseases of Farm Animals Thus the cercariae, escaping from the snail, find themselves on the grass, whereupon they promptly drop their tails and stick themselves to the grass-blades. The Vanishing Man Meanwhile, this season researchers from Michigan’s Oakland University will be experimenting with protective creams, trying to determine which works best by using an artificial skin system and luring live cercariae. Creepy Swimmer's Itch Parasite in Northern Lakes Can Scratch Summer Fun 2017-05-29T04:00:00Z Warmer temperatures increase snail and parasite metabolisms, at least initially, resulting in increased production of cercariae. Creepy Swimmer's Itch Parasite in Northern Lakes Can Scratch Summer Fun 2017-05-29T04:00:00Z Then comes the unsuspecting sheep to take his frugal meal, and, cropping the grass swallows it, cercariae and all. The Eye of Osiris Then comes the unsuspecting sheep to take his frugal meal, and, cropping the grass, swallows it, cercariae and all. The Vanishing Man |
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