Nematodes Flashcards by Megan Palmisano | Brainscape

Q

Nematodes

A

Dioecious, complete digestive system

Alae are how to ID various species

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Q

Characteristics

A

Alae

Copulatory bursa with or without spicules

Mouth is sclerotized buccaneers capsule, teeth, and dentigerous ridges

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Q

Life cycle

A

Egg/larvae to larvae in IH and then DH

L3 typically infective

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Q

Oviparous

A

Single stage or morula

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Q

Ovoviparous

A

Single L1 larva

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Q

Larviporous

A

Eggs retained in uterus

Birth to larvae

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Q

Diagnosis

A

Fecal float

In blood mff

Fecal sedimentation if denser

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Q

Trichostrongyles

A

Hairlike, with tiny mouths

Males have copulatory bursa with spicules

Direct lifecycle and usually in the GI

Eggs are non larvated

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Q

Stongyloides

A

Medium size, larger mouth

Sensory structures or teeth

Copulatory bursa

Direct life cycle with extensive larvae migration

Non larvated eggs can be seen in feces

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Q

Oxyuroidea

A

Double bulbed esophagus

Direct lifecycle with no migration

Scotch tape test to dx

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Q

Ascaroidea

A

Very large, 3 anterior lips

The alae is bulbous

Direct lifecycle, often larval migration

Non larvated eggs in feces

No copulatory bursa

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Q

Trichuroidea

A

Short car posterior ends with a whip like anterior end

Beaded esophagus

Usually direct lifecycle

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Q

Filaroidea

A

Long, slender worms

Male has corkscrew like fail

Indirect lifecycle- arthropods

Females are larviporous

Mff can be detected

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Q

Acanthocephalans

A

Not nematode

Ever single proboscis

Fluid filled body cavity

Lack digestive tract

dioecious

Indirect lifecycle- arthropods

Adults in vertebrate SI

Barbs and eggs are multilayered

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