PAR: Arthropods

This unit is based on the genetics of Arthropods

Arthropods are winged invertebrates which are characterized by the possession of cuticular exo-skeleton. They vary widely in terms of their general body divisions, number of appendages, life cycle stages and habitat. They are the most successful animals on land and have a wide variety of niches, including those in which they act either as parasite vectors or parasites themselves (ecto-parasites).



taxonomy arthropoda

Insects and Arachnids of parasitic importance. Quite a number of these organisms are of veterinary and medical importance, where they are considered vectors of diseases. Some of the important ones include ticks and mites, head and body lice, bedbugs, mosquitoes, tsetse flies, houseflies, deer flies, black flies, sand flies, biting midges.

Biology (Characteristic Features)

Members are characterized by the presence of jointed appendages, variable morphology, habitats and food types.

Life Cycle

arthropod lifecycle

This involves complete and/or incomplete metamorphosis. Arthropods with complete metamorphosis are usually more common as vectors of diseases, due to their varied diet and habitats, while those with incomplete metamorphosis are usually are more common as parasites.


Many of these parasitic arthropods induce allergic reactions, dermatitis, some feed on subcutaneous tissues, as well as direct/indirect transmission of disease agents.

Epidemiology and Management

These arthropods are associated with age-groups in unhygienic environments. Management: good sanitary conditions, chemotherapy


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