Significance of Final host
The final host is where a parasite matures and reproduces sexually, completing its life cycle. This host can be animals or humans, such as when the liver fluke reaches maturity. Examples include Nile crocodiles for certain pentastomes, snakes, lizards, and crocodilians for other pentastomid species, cats for producing oocysts, guineafowls, and birds for specific parasites. The final host provides the environment necessary for the parasite's adult stage and reproduction.
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The concept of Final host in scientific sources
Final host is where a parasite matures, reproduces sexually, and completes its life cycle. Examples include crocodiles for pentastomes, cats for producing oocysts, and animals/humans for liver flukes. It is also used to describe the regular hosts for a specific type of parasite.
From: Onderstepoort Journal of Veterinary Research
(1) Spreading the risk of transmission between various final hosts would appear a more reliable way to assure high parasite survival rates than a specialist approach.[1] (2) This phrase is used to describe the birds that are the regular hosts for a specific type of parasite.[2] (3) These are the hosts in which the adult pentastomes reproduce, and the text mentions that Nile crocodiles are thought to be final hosts for a particular pentastome species.[3] (4) Adults of most pentastomid species inhabit the nasal passageways and lungs of snakes, lizards and crocodilians, which are considered their final hosts as stated in the provided information.[4] (5) This is the host in which a parasite reaches its adult and mature form, and the Contracaecum larvae survive to reach this host.[5]
From: The Malaysian Journal of Medical Sciences
(1) This is the host, like animals or humans, where the liver fluke reaches sexual maturity, completing its life cycle.[6]