Dictionary > Parasitoidism

Parasitoidism

Definition
noun
A form of parasitism wherein an organism (called parasitoid) lives on or inside the host at one phase in its life cycle, and usually ends up in the death of the host
Supplement
Parasitism is one of the many forms of symbiosis. In parasitism, one organism (called parasite) benefits at the expense of another organism usually of different species (called host). The parasite benefits at the expense of the host organism. A special form of parasitism is parasitoidism. Parasitodism is a form of parasitism involving a parasitoid organism. Certain insect species are parasitoids. An example is a wasp ovipositing into the body of an alfalfa aphid. Taking this as an example, the parasitoid wasp requires that its parasitic developmental (larval) stage is spent within the alfalfa aphid host. The gravid female wasp deposits the eggs into the body of the host. The larvae are released from the eggs and begin to feed on the tissues of the host. The host lives up until the larval stage of the parasitoids; the host eventually dies when the parasitoids complete the larval phase, and are then released from the host to live freely as an adult parasitoid.
See also:


You will also like...

running freshwater community
Running Water Freshwater Community Factors

This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

Homo Species
The Homo Species

The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..

Digestion and Absorption of Food
Digestion and Absorption of Food

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

Plant meristem
Plant Meristems and Growth

In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

Body temperature regulation by the hypothalamus
Temperature Regulation in Animals

This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

human respiratory system
Respiration

The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..