interesting fact of the day
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Archived from the IMDb Discussion Forums — Game of Thrones
Demented_DoggVI — 9 years ago(October 12, 2016 04:53 AM)
the lancet liver fluke or dicrocoelium dendriticum is a parasite fluke that tends to live in cattle or other grazing mammals ,spends its adult life inside the liver of its host. after mating, the eggs are excreted in the feces.
the first intermediate host, the terrestrial snail , consumes the feces, and becomes infected by the larval parasites. the larvae drill through the wall of the gut and settle in its digestive tract, where they develop into a juvenile stage. the snail attempts to defend itself by walling the parasites off in cysts, which it then excretes and leaves behind in the grass or substrate.
the second intermediate host, an ant , uses the trail of snail slime as a source of moisture. the ant then swallows a cyst loaded with hundreds of juvenile lancet flukes. the parasites enter the gut and then drift through its body. most of the cercariae encyst in the haemocoel of the ant and mature into metacercariae, but one moves to the sub-esophageal ganglion (a cluster of nerve cells underneath the esophagus). there, the fluke takes control of the ants actions by manipulating these nerves. as evening approaches and the air cools, the infected ant is drawn away from other members of the colony and upward to the top of a blade of grass. once there, it clamps its mandibles onto the top of the blade and stays there until dawn. afterward, it goes back to its normal activity at the ant colony. if the host ant were to be subjected to the heat of the direct sun, it would die along with the parasite. night after night, the ant goes back to the top of a blade of grass until a grazing animal comes along and eats the blade, ingesting the ant along with it, thus putting lancet flukes back inside their host. they live out their adult lives inside the animal, reproducing so that the cycle begins again.infected ants may contain 100 metacercariae, and a high percentage of ants may be infected. typical infections in cattle may be in the tens of thousands of adult worms. -
merej — 9 years ago(October 12, 2016 05:11 AM)
there, the fluke takes control of the ants actions by manipulating these nerves. as evening approaches and the air cools, the infected ant is drawn away from other members of the colony and upward to the top of a blade of grass. once there, it clamps its mandibles onto the top of the blade and stays there until dawn. afterward, it goes back to its normal activity at the ant colony
I wonder whether them ants remember their nightly activities? And how do they explain the absence to their mates?
Very odd, this.
After all is said and done, a lot more will have been said than done.