Dictionary > Ectoparasite

Ectoparasite

Definition
noun, plural: ectoparasites
(parasitology) A parasite that lives outside the body of the host
Supplement
Parasitism is s form of symbiosis in which one organism (called parasite) benefits at the expense of another organism usually of different species (called host). This host-parasite association may eventuate to the injury of the host. Parasites may be grouped into ectoparasites and endoparasites. Parasites that live outside the host are called ectoparasites whereas those that live inside the host are called endoparasites. In this regard, the presence of ectoparasites on the host is called infestation rather than infection. The host infested with ectoparasites is not harmed as detrimentally as the other hosts infected with endoparasites. Nevertheless, some of these ectoparasites are vectors of pathogens. For instance, female Aedes mosquito is an ectoparasite of humans and may transmit dengue virus as it feeds on its host.
In humans, ectoparasites are comprised of two major animal groups: parasitic arachnids and parasitic insects. Parasitic arachnids include ticks and mites. As for the ectoparasitic insects, they are exemplified by mosquitoes, tsetse flies, fleas, and lice. In other animals, such as fish and crocodilians, they may be ectoparasitized by leechs. Some of these leeches, e.g. Piscicola geometria – a fish leech species, may transmit spring viraemia carp virus to a carp host.
Word origin: Latin parasitus from Greek parasitos (person who eats at the table of another).
Compare:

See also:

  • parasite
  • parasitism
  • symbiosis
  • arachnid
  • insect
  • ectoparasitism


  • You will also like...

    An artistic depiction of Dunkleosteus fish
    Fish

    The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

    Sugar Homeostasis
    Sugar Homeostasis

    The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

    Nephrolepis exaltata
    Vascular Plants: Ferns and Relatives

    Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

    Ecological Research Measuring & Analysis
    Ecological Research: Measuring & Analysis

    This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..

    Geological Periods
    Geological Periods

    Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

    An artist depiction of a Precambrian multicellular life form.
    The Evolution of Cell Organelles

    The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..

    Related Articles...

    No related articles found

    See all Related Topics