Nematoda Flashcards
1
Q
Nematoda characteristics
A
- unsegmented
- pseudocoelomate
- complete digestive system
- dioecious + sexually dimorphic
- cuticle
- motile endoparasites
- mostly INDIRECT life cycles
- FOUR LARVAE CYCLES (j1 j2 j3 j4)
- ZOONOSIS
2
Q
Pseudoterranova decipiens
A
sealworm
- yellow/brown J3
- found in MUSCLE
- def host: seals
- intermediate hosts = krill, zooplankton
- zoonosis
3
Q
Anisakis simplex
A
white, coiled J3 def hosts mammals inter hosts krill zooplankton zoonosis DETECTION VIA UV LIGHT IN FISH PLANTS PREVENT ACCESS TO HOSTS
4
Q
swimbladder roundworm = anguillicoloides crassus
A
european eels
invade SWIMBLADDER
diagnosis: swimbladdeer inflammatio, lesions, hyperpplasia, fibrosis, adhesions
Prevention: remove intermiediate hosts? copepods.
5
Q
Echinocephalus
A
oysters, scallops, abalone. larval.
6
Q
what life form are more problematic?
A
larvae
7
Q
why are they such a problem commercially?
A
affect quality of fillet, decrease value
8
Q
how do you prevent zoonosis for humans with these?
A
gut fish immediately after kill. COOK OR FREEZE YOUR FISH. This is the one group that could really hurt you.
