Strongylida

Strongylida
Nippostrongylus brasiliensis
Scientific classification
Kingdom:	Animalia
Phylum:	Nematoda
Class:	Chromadorea
Order:	Rhabditida
Suborder:	Strongylida
Superfamilies
Ancylostomatoidea Diaphanocephaloidea Heligosomoidea Metastrongyloidea Molineoidea Strongyloidea Trichostrongyloidea

The Strongylida suborder includes many of the important nematodes found in the gastrointestinal tracts of ruminants, horses, and swine, as well as the lungworms of ruminants and the hookworms of dogs and cats.

Taxonomy

This suborder includes (superfamily - included families):

• Ancylostomatoidea
  • Ancylostomatidae
• Diaphanocephaloidea
  • Diaphanocephalidae
• Heligmosomoidea
  • Heligmosomidae
• Metastrongyloidea
  • Angiostrongylidae
  • Crenosomatidae
  • Filaroididae
  • Metastrongylidae
  • Protostrongylidae
  • Pseudaliidae
  • Syngamidae
• Molineoidea
  • Molineidae
• Strongyloidea
  • Chabertiidae
  • Cloacinidae
  • Deletrocephalidae
  • Stephanuridae
  • Strongylidae
• Trichostrongyloidea
  • Amidostomatidae
  • Cooperiidae
  • Dictyocaulidae
  • Dromaeostrongylidae
  • Haemonchidae
  • Heligmonellidae
  • Heligmosomatidae
  • Herpetostrongylidae
  • Mackerrasrtongylidae
  • Nicollinidae
  • Trichostrongylidae

Major superfamilies

Diaphanocepaloidea

These are parasites of lizards and snakes. They have a direct lifecycle in soil.

Ancylostomatoidea

These have very large buccal cavities. They infect the small intestine of mammal carnivores by skin penetration.

Strongyloidea

These have large buccal capsules with corona radiata. Most of them infect the large intestine by oral ingestion of the larva.

Trichostrongyloidea

Egg of Trichostrongylus sp.

These worms have very small mouths and are found in a large number of hosts.

Metastrongyloidea

All of these parasites go through a snail to infect the lungs or vascular system of mammals, like artiodactyls, carnivores, marsupials, and cetacea.

References