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quiz 4par

spiro

QuestionAnswer
INDIRECT life cycle – arthropod I.H. (L1 –L3) SPIRUROIDS
Most have 2 lateral lips – pseudolabia SPIRUROIDS
Spicules – dissimilar shape and size SPIRUROIDS
Ovoviviparous (embryonated) eggs SPIRUROIDS
Horse Eyeworm Thelazia lacrymalis
Dog Eyeworm Thelazia californiensis
Found in lachrymal ducts, conjunctival sac and under nictitating membrane Thelazia californiensis
Dogs, sheep, deer, cats and horses Thelazia californiensis
Zoonotic Thelazia californiensis
VECTOR – Fruit fly, Fannia canicularis & F. benjamini (muscoid latrine flies) Thelazia californiensis
Phospholine & IsoflurophateLevamsiole & Doramectin Thelazia californiensis
Adults -in the stomach, cecum & colon Habronema
Adults have a cylindrical buccal capsule Habronema
Eggs: long, thin-shelled and embryonated when passed in the feces (hot dog shape) Habronema
Proud Flesh (excessive granulation tissue Habronema
Summer sores or Swamp cancer Habronema
Chronic gastritis & ulcerations Habronema
Adults reside in nodules in the stomach Draschia
Same life cycle (M. domestica) and pathology as Habronema Draschia
Large stout worms PHYSALOPTERA
Stomach or intestine (cats and dogs) PHYSALOPTERA
2 large pseudolabia armed w/teeth – firmly attached to mucosa PHYSALOPTERA
Female – many ovaries & uteri PHYSALOPTERA
Eggs: thick walled, embryonated PHYSALOPTERA
Dogs/Cats pass eggs w/L1…..ingested by I.H. (roaches, crickets, beetles) L1 to L3…or Paratenic host (frogs, snakes, rodents) PHYSALOPTERA
Vomiting Anorexia Dark, tarry fecesAnimals may lose weight PHYSALOPTERA
The adults reside in nodules in the wall of the esophagus, stomach or aorta SPIROCERCA LUPI
DH: Dogs and cats (wild) SPIROCERCA LUPI
Important factor in development of a malignant tumor of the esophagus SPIROCERCA LUPI
Ingested by dung beetle (L1 – L3) SPIROCERCA LUPI
Ingestion by D.H. – walls of esophagus & stomach SPIROCERCA LUPI
I.H. ingested by a paratenic host (amphibia, reptiles, wild birds) – L3 encyst in esophagus, mesentery or organ SPIROCERCA LUPI
SPIROCERCA LUPI Vomiting, Sudden death (rupture of aorta)Wasting (loss of weight), emaciation
REPORTABLE DISEASE IN THE U.S. DRACUNCULUS
1900 – found throughout Africa, the Middle East, Central & South Asia DRACUNCULUS
Tadpoles of frogs (Xenopus & Rana) were capable of ingesting copepods w/ L3 DRACUNCULUS
Ingested – L3 migrate (gut – somatic tissues) DRACUNCULUS
(raccoons, dogs, cats) – N.America D. insignis
(HUMANS) – Africa, India D. medinensis
DRACUNCULUS Female is larviparous (viviparous) and may reach 3 feet long
Contraction instigated by water, cause worm and uterus to protrude through the wound DRACUNCULUS
Created by: alljacks