Nematode Overview Flashcards
1
Q
What are the four general morphology factors of the Nematode?
A
- Unsegmented (elongated)
- Circular (cross section)
- Vast size variation
- Shape variations
2
Q
What are the three general shape variations of Nematodes?
A
- Spherical
- Whip- like
- Terminal enlargements
3
Q
Nematodes are Dioecious which, means
A
Separate sexes
4
Q
Males have….
A
two spicules
5
Q
Females…
A
lay thousands of eggs per day
6
Q
Nematode GI tract distinctions
A
mouth variations like papillae or “teeth”
7
Q
What internal structure is extensive in the Nematode?
A
Reproductive tract
8
Q
What are the four nematode egg types?
A
- Ascarid
- Strongyle
- Spiruroid
- Trichuroid
9
Q
What are the characteristics of an Ascarid egg?
A
- round/ oval
- thick outer shell (rough or smooth)
- single cell stage
10
Q
Strongyle egg characteristics
A
- Oval/ elliptical
- Thin smooth shell
- Morula stage
11
Q
Characteristics of the Spiruroid egg
A
- Oval/ rectangular
- Thin smooth shell
- First stage larva
12
Q
Trichuroid characteristics
A
- Elliptical w polar plugs
- Thick outer shell (smooth)
- Single cell stage
13
Q
What are the three types of lifecycles for the Nematodes
A
Direct, Indirect, and Simple
14
Q
What is a direct lifecycle
A
No intermediate host
15
Q
What is an indirect lifecycle
A
Intermediate host(s)
