Definitions & Categories Of Parasites Flashcards Preview

Parasitology > Definitions & Categories Of Parasites > Flashcards

Flashcards in Definitions & Categories Of Parasites Deck (17)
Loading flashcards...
0

Symbiosis

Association of two species, primarily for getting food on the part of one or both members

1

Commensalism

Association that is beneficial to one partner and the other is neither benefited nor injured

2

Mutualism

Type of commensalism where associations are beneficial to both organisms

3

Parasitism

Symbiotic relationship where one animal (the host) is to some degree injured through the activities of the other animal (the parasite). One species lives upon or within the other and has a metabolic dependence on the species

4

Helminthic parasites

Wormlike invertebrates
-Nematode (roundworm)
-Cestode (tapeworm)
-Trematode (fluke)

5

Protozoan

Unicellular eukaryotic microorganisms
-Rhizopods (amebas)
-Ciliates
-Flagellates
-Sporozoa

6

Arthropods

Hard exoskeleton, jointed appendages
1. Lice
2. Bed bugs
3. Ticks
4. Fleas
5. Mites

7

Rhizopods:
1. Organelles of locomotion?
2. Method of reproduction?

1. Pseudopods
2. Binary fission

8

Ciliates:
1. Organelles of locomotion?
2. Method of reproduction?

1. Cilia
2. Binary fission

9

Flagellates:
1. Organelles of locomotion?
2. Method of reproduction?

1. Flagella
2. Binary fission

10

Sporozoa:
1. Organelles of locomotion?
2. Method of reproduction?

1. None
2. Schizogony/sporogony

11

Nematode:
1. Morphology?
2. Sex?
3. Alimentary tract?
4. Intermediate host?

1. Spindle shaped
2. Separate sexes
3. Tubular
4. Variable

12

Cestode:
1. Morphology?
2. Sex?
3. Alimentary tract?
4. Intermediate host?

1. Head with segmented body (proglottids)
2. Hermaphroditic
3. None
4. One

13

Trematode:
1. Morphology?
2. Sex?
3. Alimentary tract?
4. Intermediate host?

1. Leaf shaped with oral and ventral suckers
2. Most are hermaphroditic
3. Blind
4. Two

14

Trophozoite

Feeding, reproductive stage; sensitive to environment

Macroscopic Observation:
Higher numbers seen in liquid stool vs soft or formed

Liquid > soft > formed

15

Cyst

Protective, infective stage, survives environment.

Macroscopic Observation:
Higher numbers seen in formed stool vs liquid or soft

Formed > soft > liquid

16

Permanent stains for parasitology:

1. Wheatley Trichome Stain
2. Iron-hematoxylin stain
3. Acid-fast stain