Metoxenous is a word derived from Greek roots that refers to a type of parasite that relies on multiple hosts in its life cycle. The word is spelled as [mɛtəksɛnəs], with the emphasis on the second syllable. The first part of the word, "meto," means "after" or "successor," while "xenous" means "guest" or "stranger." Thus, the word precisely describes a parasite that moves from one host to another to complete its life cycle. The spelling of metoxenous is relatively challenging and requires a good grasp of phonetic transcriptions.
The term "metoxenous" is a relatively uncommon adjective used in the field of biology and parasitology to describe a specific type of relationship between a parasite and its host. In essence, it refers to a parasitic organism that requires at least two different hosts to complete its life cycle and reproduce successfully.
When a parasite is metoxenous, it begins its life cycle in one host species (known as the intermediate host), where it undergoes various developmental stages. Once this process is complete, the parasite moves on to the final host species (known as the definitive host) to mature, reproduce, and release its offspring.
This complex life cycle involving multiple hosts is a characteristic of many parasitic organisms, particularly in the animal kingdom. The intermediate host typically acts as a vector or carrier for the parasite, helping it reach the definitive host, where it can continue its reproductive cycle. The intermediate host may not be adversely affected by the parasite or may suffer some degree of harm, depending on the specific relationship.
The term "metoxenous" is derived from the Greek words "meta," meaning "among" or "between," and "xenos," meaning "stranger" or "host." It highlights the parasitic organism's dependence on different hosts to complete its life cycle successfully. This distinct way of parasitism demonstrates the intricate and fascinating interactions that exist within the natural world.
Noting a parasite with two cycles of existence passed on different hosts.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.