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Parasitology is the study of parasites, their hosts, and the relationship between them. As a biological discipline , the scope of parasitology is not determined by the organism or environment in question but by their way of life.
The technical languages of ecology and parasitology sometimes involved different meanings for the same words. There were philosophical differences, too: Poulin notes that, influenced by medicine, "many parasitologists accepted that evolution led to a decrease in parasite virulence, whereas modern evolutionary theory would have predicted a ...
Medical parasitology is concerned with three major groups of parasites: parasitic protozoa, helminths, and parasitic arthropods. [2] Parasitic diseases are thus considered those diseases that are caused by pathogens belonging taxonomically to either the animal kingdom , or the protozoan kingdom .
Cestoda is a class of parasitic worms in the flatworm phylum (Platyhelminthes). Most of the species—and the best-known—are those in the subclass Eucestoda; they are ribbon-like worms as adults, commonly known as tapeworms.
Saurophthirus, an ectoparasitic Cretaceous insect [1]. Paleoparasitology (or "palaeoparasitology") is the study of parasites from the past, [2] and their interactions with hosts and vectors; it is a subfield of paleontology, the study of living organisms from the past.
Whole blood with microfilaria worm, giemsa stain. L. loa worms have a simple structure consisting of a head (which lacks lips), a body, and a blunt tail. The outer body of the worm is composed of a cuticle with three main layers made up of collagen and other compounds which aid in protecting the nematodes while they are inside the digestive system of their host.
Necator americanus is a species of hookworm (a type of helminth) commonly known as the New World hookworm.Like other hookworms, it is a member of the phylum Nematoda.It is an obligatory parasitic nematode that lives in the small intestine of human hosts. [1]
The helminth Spinochordodes parasitising a bush-cricket (Meconema sp.) A plate from Félix Dujardin's 1845 Histoire naturelle des helminthes ou vers intestinaux. Helminthology is the study of parasitic worms (helminths).