definitive host


Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.
Related to definitive host: paratenic host, reservoir host

definitive host

[də′fin·əd·iv ′hōst]
(biology)
The host in which a parasite reproduces sexually.
References in periodicals archive ?
Some of these parasites, in particular, can induce phenotypic changes in their intermediate hosts that are supposed to increase the probability of predation by their definitive hosts, thus increasing their own probability of transmission (Poulin and Thomas, 1999; Moore, 2002).
parva adults reach enormous parasite burdens in the intestines of their definitive hosts (Ribas et al.
This case study strongly suggests logistic regression has the potential to determine parasite intermediate hosts if definitive host stomach contents can be routinely and adequately sampled and the food items identified to taxa.
and finally infecting the definitive host (a vertebrate).
The definitive host of Toxoplasma gondii is the cat because sexual reproduction occurs in the epithelial tissue of the feline intestine.
Humans are not the definitive host for this roundworm.
Byrd, 1935), which describe snakes as the definitive host and tadpoles and frogs as second intermediate hosts.