11. He also examined host specificity of species. 12. Adult tapeworms often have a high final host specificity , with some species only found in one host vertebrate. 13. Because of this highly modified system of host immunosuppression, a high level of parasitoid-host specificity is not surprising. 14. The different species of " Brucella " are genetically very similar, although each has a slightly different host specificity . 15. "G . intestinales " is divided into eight assemblages based on host specificities and genetic divergence of marker genes. 16. Host specificity is confirmed not only through the strain's ability to infect various hosts, but their reproductive ability afterwards.17. When a pathogen exhibits this type of host specificity within a plant family, it is referred to as a pathotype. 18. For this purpose, some Parasitidae mites ( for example, " Poecilochirus " species ) are used due to their phoront-host specificity . 19. The high host specificity of the mites is held responsible for the fact that mostly even-toed ungulates struggled with these consequences. 20. Generally, Lycaenidae species which have a myrmecophilous relationship with the ant genus " Myrmica " are locked to primary host specificity .