Parasitology intro

Parasite

An organism that lives on or in a host and causes harm to the host.

Parasitism

A type of symbiotic relationship where one organism benefits at the expense of another.

Symbiosis

The interaction between two different organisms living in close physical proximity.

Ectoparasite

A parasite that lives on the exterior surface of a host.

Endoparasite

A parasite that lives within the tissues or organs of a host.

Life Cycle

The series of changes in the life of an organism, including reproduction and development.

Zoonotic diseases

Diseases that are transmitted from animals to humans.

Microorganism

A microscopic organism, which may exist in its single-celled form or as a colony of cells.

Host

An organism that provides nourishment and habitat for a parasite.

Interspecies Associations

Interactions between different species, including relationships like mutualism, commensalism, and parasitism.

Aberrant parasite

A parasite that is found in an unusual location within the host.

Obligatory parasite

A parasite that cannot complete its life cycle without exploiting a suitable host.

Definitive host

The host in which a parasite reaches maturity and, if applicable, reproduces.

Intermediate host

An organism that harbors the immature or non-reproductive forms of the parasite.

Facultative parasite

A free-living organism that can become parasitic under certain conditions.

Prepatent period

The time between infection and the first detection of the parasite in the host.

Infection

The invasion and multiplication of a parasitic organism within the host.

Integumentary parasites

Parasites that inhabit the outer layer of the host's skin or exoskeleton.

Taxonomy

The classification of organisms into groups based on similarities and differences.

Ciliophora

A phylum of protozoa that have hair-like structures called cilia.

Trematodes

Flatworms that are commonly known as flukes.

Cestodes

Flatworms known as tapeworms, typically segmented.

Nematodes

Roundworms, a diverse group with numerous species, some of which are parasitic.

Phylum

A level of classification in biology; a taxonomic rank below kingdom.

Genus

A category used in the biological classification of organisms, grouping together species.

Species

The basic unit of biological classification, referring to a group of organisms that can interbreed.