Para Final-ascarids&strongyles Flashcards
Family Ascarididae
-small intestine
-mouth with 3 lips
-males with 2spicules
-oviparous
-oval/rounded eggs with thick shell
-L2 infective
-visceral larva migrans
Genus Toxascaris, Toxocara, Ascaris, Parascaris
Toxascaris
T.leonina
- canids+felids
- direct L.C
- no migration
- rats+reptiles parade if hosts
Toxocara
T.canis -canids S.I -direct L.C -4 routes of infection -lagomorphs are paratenic host T.cati -felids S.I -direct L.C -no prenatal infection -lactogenic infection important T.vitolorum -cattle S.I -no cervical alae -terminal spicule -direct L.C -transplacental+transmammary transmission
Ascaris
A.suum
- swine S.I
- turtle shell like eggs
- direct L.C
- L3 moults in liver
- no transmammary or prenatal transmission
- earthworms+beetles are paratenic hosts
Parascaris
P.equorum
- horse S.I
- 3 large+3 small lips
- male tail with 3 lateral alae
- direct L.C
Family Anisakidae
Anisakis
- zoonotic
- stomach of marine animals
- indirect L.C
- L2 in copepod crustaceans (I.H)
- marine fishes with encapsulated L3 are paratenic hosts
- L3 infectious
Heterakis
H.gallinarum
- small
- in caecum
- direct L.C
- L2 infective
- earthworms are paratenic hosts
- oval eggs
Ascaridia
A.galli and A.columbae
-large
-S.I
-male tail with alae and precloacal sucker
-oval eggs with thick shell
-direct L.C-earthworms with L3 are paratenic hosts
-
Order Strongylida
- strongyliform oesophagus
- males with copulatory bursa and 2 spicules
- radiated crown common
Superfamily Trichostrongyloidea
Family Trichostrongylidea
-No buccal capsule
-strongyle type eggs (not nematodirus)
-direct L.C
-L3 is infective
Phostotropic positive and geotropic negative larvae
-L4 hypobiosis
-small hairlike adults
Large nematodes of abomasum
Small nematodes of abomasum
Small nematodes of S.I
Haemonchus
Big nematodes of abomasum -“barbers pole” worm -haematophagous -female with vulvar flap -male with asymmetrical spicules H.concortus-cattle H.placei-cattle
Small nematodes of abomasum
Ostertagia
Marshallagia
Trichostrongylus
Ostertagia
Small nematodes of abomasum -brown -females with vulvar flap -males with symmetrical spicules O.oestertagi-cattle abomasum T.circumtinta-small ruminants
Marshallagia
Small nematodes of abomasum
-large copulatory bursa with large dorsal ray
M.marshalli-ruminants
Trichostrongylus
Small nematodes of abomasum -very small and thin -reddish/brown -short/thick/twisted spicules of unequal length T.axei-ruminants T.columbriformis-ruminants S.I T.vitrinus-ruminants S.I T.capricola-ruminants S.I T.tenuis-birds S.I and caecum
Small nematodes of S.I
Cooperia
Nematodirus
Hyostrongylus
Cooperia
-cephalic vesicles
-reddish/brown
-short spicules
C.curticei-small ruminants S.I
C.punctata-cattle S.I
C.pectinate-cattleS.I
C.oncophora-cattle+sheep S.I
Nematodirus
-cephalic vesicles
-2 long fused spicules, longer than copulatory bursa
-eggs with less than 16 blastomeres
N.spathiger-sheep S.I
N.battis-sheep S.I
N.filicollis-sheep S.I
N.helvetianus-cattle S.I
Hyostrongylus
Swine stomach
- thin reddish
- hematophagus
- copulatory bursa
- direct L.C
- L3 infective
- L4 hypobiotic in stomach mucosa
Superfamily Strgyloidea
- zoonotic
- buccal capsule
- strongyle type eggs
- direct L.C
- L3 infectious
Stephanurus
Visceral larva migrans -ureter/kidney/liver of pigs -big buccal capsule with radiated crown -L3 infective -paratenic hosts -encapsulation in organs/blood vessels=obstruction S.dentata
Syngamus
-G.I system of birds
-hematophagus
-buccal capsule with teeth
-eggs with mucoid plugs
-permanent copula
-L3 infective
-direct L.C
-earthworms paratenic hosts
-mating in trachea
S.trachea
Family Ancylostomadie
Hook worms -duodenum -zoonotic -cutaneous larva migrans Genus Ancylostoma, Ucinaria, Bunostomum
Ancylostoma
Visceral larva migrans -zoonotic -duodenum -hematophagus -deep buccal capsule -direct L.C -L3 infective -4 ways of infection (cutaneous,oral,prenatal,lactogenic) A.caninum-carnivores A.tubaeforme-cats A.brasiliense-carnivores, tropical region A.duodenale-man, wild animals, swine
Uncinaria
Visceral larva migrans
- zoonotic
- cutting plates
- oral route
- carnivores jejunum/ilium
Bunostomum
Visceral larva migrans
-zoonotic
-percutaneous infection through hair follicles
-ruminants S.I
B.trigonocephalum-small ruminants jejunum/ilium
B.phlebotomus-cattle duodenum
Family Strongylidae
Large strongyle of horses
Genus Strongylus, Tridontoporus
Strongylus
Large strongyles of horses -caecum and colon -intraorganic migration -hematophagous -direct L.C -L3 infective S.equinus-liver/pancreas S.edentatus-right flank/hepatic ligament, no teeth S.vulgaris-cranial mesenteric artery, 4 months of migration
Tridontoporus
Large strongyle of horses
- caecum and colon
- direct L.C
- L3 infective
- no migration
- ulcers in right dorsal colon
Family Trichonematidae
Small strongyles/cyathomines of horses
- caecum/colon
- short buccal capsule, internal+external leaf crowns
- direct L.C
- L3 infective
- L3 can be hypobiotic in mucosa
Family Trichonematidae
L.I of swine and ruminants
Chabertia
Oesophagostomum
Chabertia
- ruminants L.I
- big buccal capsule with radiated crown
- Direct L.C
- L3 infective
Oesophagostomum
- colon of ruminants and swine
- small buccal capsule with radiated crown
- cervical alae and papillae
- copulatory bursa
- direct L.C
- L3 infective
- L3 hypobiotic in colon mucosa when subsequent
Family Trichostrongylidae
Bronchopulmonary strongyle
Lungworms of ruminants
Dictyocaulus
Dictyocaulus
Large lungworm of ruminants -direct L.C -L3 infective -fungus Piobolus help spread by spores D.viviparus- cattle D.filaria-small ruminants
Family Protostrongylidae
Bronchi/bronchioles/alveoli of small ruminants
-larvated eggs
-L1 in feces, posterior end of taxonomic value
-indirect L.C
-slugs are I.H
-L3 infective
-breeding nodules in lungs
Genus Protostrongylus, Neostrongylus, Muellerius, Cystocaulus
-
Family Metastrongylidae
In bronchi of swine
Metastrongylus
Metastrongylus
Bronchi of swine -small buccal capsule -larvated eggs -indirect L.C -earthworms are I.H -L3 infective M.apri
Family Filariodidae
Lungworms of dogs and cats Filaroides -direct L.C -L1 infective -transplacental+oral infection route -feed regurgitation important F.osteri-nodules in trache/bronchi of dogs F.hirthi-pulmonary parenchyma of dogs F.rostratus-trachea/bronchi of cats
Family Crenosomatidae
Lungworms of Fox/canids Crenosoma -bronchi/trachea -indirect L.C -snails and slugs are I.H -L3 infective C.vulpis
Family Angiostrongylidae
In lungs and blood of cats and dogs
-indirect L.C
-slugs and snails are I.H
Angiostrongylus vasorum-pulmonary artery of dogs/foxes
Aelurostrongylus abstrussus-lungs of cats
Ascarids-genuses
Toxascaris Toxocara Ascaris Parascaris Anisakis Ascaridia
Big nematodes of abomasum
Haemonchus
Small nematodes of abomasum
Ostertagia
Teladorsagia
Marshallagia
Trichostrongylus
Strongyles of small intestine
Cooperia
Nematodirus
Strongyles of large intestine
Chabertia
Oesophagostomum
G.I system of swine & birds
Hyostrongylus
Stephanurus
Syngamus
Large strongyles of horses
Strongylus
Triodontophorus
Hook worms
Ancylostoma
Uncinaria
Bunostomum
Bronchopulmonary nematodes
Dictyocaulus Protostrongylus Muellerius Cystocaulus Metastrongylus Filaroides Crenosoma Angylostrongylus Aelurostrongylus
