Characteristics of Trichostrongyloidea superfamily

Characteristics of Trichostrongyloidea superfamily:

·         The trichostrongyloids are small, often hair like worm in the bursate group.

·         Worms of this group parasitize the alimentary tract of animal and birds except Dictyocaulus.

·         Structurally, they have few cuticular appendages and the buccal capsule is vestigial.

·         The males have well developed bursa and two spicules (it is used for identification)

·                     Life cycle is direct usually non migratory

·         Ensheathed L₃ is the infective stage

·         The most important alimentary genera are

·          

o  

Nematodirus Hyostrongylus Marshallagia Mecistrocirrus

Ostertagia

o   Haemonchus

o   Trichostrongylus

o   Cooperia

·         Dictyocaulus spp. Are found in Trachea and bronchi, particularly of diaphragmatic lobes.