The life cycle often consists of the trypomastigote form in the vertebrate host and the trypomastigote or promastigote form in the gut of the invertebrate host.
42.
These larvae migrate to the head and mouthparts of the horse fly, and enter the bloodstream of another vertebrate host when the horse fly feeds again.
43.
These gametocytes circulate in the blood until they are taken up when a mosquito feeds on the infected vertebrate host, taking up blood which includes the gametocytes.
44.
Life cycles have been elucidated for a number of species . " Lobatostoma manteri " is an example of a species which has obligate vertebrate hosts.
45.
In its vertebrate host, the cercaria matures to an adult form, the fluke, and lays eggs that are discharged with the host feces or urine.
46.
If both praziquantel and artemether can be used together, the entire lifespan of " S . japonicum " would be covered in the vertebrate host.
47.
The vertebrate hosts of the virus were primarily monkeys in a so-called enzootic mosquito-monkey-mosquito cycle, with only occasional transmission to humans.
48.
In all cases, only female mosquitoes can be infected with " Plasmodia " species, since only the females feed on the blood of vertebrate hosts.
49.
The species in this genus are entirely parasitic with part of their life cycle spent in a vertebrate host and another in an invertebrate host-usually a mosquito.
50.
Species in this genus have two hosts ( a vertebrate and an invertebrate ) in their life cycle : for species in this genus the vertebrate host are lizards.
