ektoparasittiryhmät

Ektoparasittiryhmät refers to classifications of external parasites. These are organisms that live on the outer surface of their host, such as the skin, fur, or feathers. They obtain nutrients by feeding on the host's tissues, blood, or secretions.

Common groups of ektoparasites include arthropods, which are invertebrates with an exoskeleton. This broad category encompasses several important types. Insects like fleas, lice, and mites are well-known ektoparasites. Fleas are wingless insects that feed on blood and are often vectors for diseases. Lice are wingless insects that can infest hair or feathers and feed on blood or skin debris. Mites are tiny arachnids, related to spiders, and include species that cause mange or scabies on mammals and birds. Ticks, also arachnids, are larger than mites and typically attach to the host to feed on blood for extended periods, often transmitting diseases.

Another significant group consists of protozoa. While many protozoa are free-living, some are obligate or facultative ektoparasites, particularly on aquatic animals. For example, certain species can attach to fish gills or skin.

The classification of ektoparasites is important for understanding their biology, life cycles, and the diseases they can transmit. This knowledge is crucial for veterinary medicine, public health, and wildlife management. Control strategies often target specific ektoparasitic groups based on their unique characteristics.