strongyloidea Flashcards
(137 cards)
strongyloidea taxonomy
kingdom- Animalia phylum-Nematoda -bursate class- secernentea order- strongylida family- strongyloidea
strongyloidea affect who
- horses: small and large strongyles
- Ruminants and primates
- Pigs 9kindyes)
strongyloidea id
- big mouths and bursa
- front end w/ crowns (corona radiata)
strongyloidea organ/ cell effected
cecum and colon
large strongyles taxonomy
kingdom- Animalia phylum-Nematoda-bursate class- secernentea order- strongylida family- strongyloidea subgroup- large strongyles
large strongyles life cycle
- egg -> L1 -> L2-> L3 (infective)
- spend 6 months to 1 year just crawling around before multiplication
large strongyles in resistantce
3rd stage resistant to desiccation and temp extreems
large strongyles infectious when
only larvae infectious not eggs
strongylus vulgaris taxonomy
kingdom- Animalia phylum-Nematoda -bursate class- secernentea order- strongylida family- strongyloidea subgroup- large strongyles
strongylus vulgaris host
horse
strongylus vulgaris lifecycle
Enters wall of cecum & ventral colon & penetrates to submucosa -> Molts to L4-> Penetrates adjacent small arterioles -> Migrates to anterior mesenteric artery -> Finally enters lumen & carried by blood to arteries in intestinal wall -> Enter surrounding tissue & form nodule where they molt into adult -> Enter lumen of cecum & colon
strongylus vulgaris dx
- L4 occludes arteries and causes inflame thrombosis and destroys intestinal wall
- emboli can -> posterior paralysis kidney infection intestinal infarction, impacted intestinal segment
- verminous enteritis
- aneruisms
strongylus vulgaris recovery
lesions heal well and fast once worms are gone
strongylus edentates taxonomy
kingdom- Animalia phylum-Nematoda -bursate class- secernentea order- strongylida family- strongyloidea subgroup- large strongyles
strongylus edentates host
horses
strongylus edentates id
no teeth
storngylus edentates life cycle
- L3 burrow into wall of lg intestine & reach liver via portal veins
- Molt to L4 in liver
- L4 migrates through liver & pancreas
- Leave liver & migrate through peritoneum back to large intestine
- Molt & penetrate intestinal lumen
strongylus edentates dx
- liver damage bc migrations
- possible peritonitis
- large edematous lesions in bowel wall
- lungs
large strongyles includes what
- strongylus edentates
- strongylus vulgaris
small strongyles taxonomy
kingdom- Animalia phylum-Nematoda -bursate class- secernentea order- strongylida family- strongyloidea subgroup- small strongyles
small strongyles include
- sephanurus dentatus
- syngamus trachea (“married together”)
small strongyles host
- horses
small strongyles lifecycle
- non-mingartory in mucosa
- develop nodules in mucosa
- may overwinter in L4 in submucosal nodules
small strongyles organ effected
adults in cecum and colon