gondii can initially cause mild, flu-like symptoms in the first few weeks following exposure, but otherwise, healthy human adults are asymptomatic. gondii infection is generally asymptomatic but may lead to a serious case of toxoplasmosis. In humans, particularly infants and those with weakened immunity, T. hypomethylation of arginine vasopressin-related genes in the medial amygdala, which greatly decrease predator aversion). gondii–induced behavioral changes in rodents occur through epigenetic remodeling in neurons that govern the relevant behaviors (e.g.
gondii can sexually reproduce, such behavioral manipulations are thought to be evolutionary adaptations that increase the parasite's reproductive success since rodents that do not avoid cat habitations will more likely become cat prey.
Because cats are one of the only hosts within which T. gondii-infected rats have a decreased aversion to cat urine while infection in mice lowers general anxiety, increases explorative behaviors and increases a loss of aversion to predators in general. Support for this "manipulation hypothesis" stems from studies showing that T. gondii alters behavior in ways that increase the rodents' chances of being preyed upon by felids. gondii is capable of infecting virtually all warm-blooded animals, : 1 but felids are the only known definitive hosts in which the parasite may undergo sexual reproduction. aɪ, - iː/) is a parasitic protozoan (specifically an apicomplexan) that causes toxoplasmosis. Toxoplasma gondii ( / ˈ t ɒ k s ə ˌ p l æ z m ə ˈ ɡ ɒ n d i.
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