Phylum Nematoda Flashcards
1
Q
Feature of Phylum Nematoda:
A
Triploblastic Cephalized Bilaterally symmetric Pseudocoelmate Marine, freshwater, terrestrial, or parasitic
2
Q
Synapomorphies of Phylum Nematoda:
A
Tri- or hexaradiate mouth
3
Q
Taxonomy of Phylum Nematoda:
A
No classes
25 000 species
4
Q
Ascaris lumbricoides
A
Causes Ascariasis (Pig roundworm) 25% prevalence From ingestion of eggs in feces Larvae in lungs Adults in intestines
5
Q
Trichinella spiralis
A
Causes Trichinasis 5% prevalence From ingestion of cysts in undercooked meat Larvae encysted in muscle Adults in intestines
6
Q
Enterobius vermicularis
A
Causes Pinworm (itchy bum) 95% prevalence From ingestion of eggs in feces Larvae encysted in feces Adults in intestines
7
Q
Dracunculus medinensis
A
Causes Guineaworm 10% prevalence From ingestion of larvae encysted in copepods Larvae encysted in copepod Adult in intestines Female worms migrate down to feet
8
Q
Ancyclostoma duodenale and Necator americanus
A
Cause Hookworm 60% prevalence From larvae burrowing into skin Eggs in feces Adults in intestines
9
Q
Loa loa
A
Causes Loaiasis 20% prevalence From flies drinking from eyes or skin Eggs in tears Adults on eyes
10
Q
Wucheria bancrofti
A
Causes Filariasis/Elephantiasis
15% prevalence
From mosquitos
Adults and larvae in lymphatic system
11
Q
Turbatrix aceti
A
Vinegar eel
Habitat: Acid pools
Non-parasitic
12
Q
Caenorhabditis elegans
A
Elegant worms
Habitat: Terrestrial
Non-parasitic
Model organism for invertebrate development and genetics
13
Q
What is important about Trichophyton sp. and Microsporum sp.?
A
Causes Ringworm, Athlete’s Foot, Jock’s Itch
Not worms/Caused by fungus
From skin contact
Epidermis
