Week Four: Annelida (Chapter 15) Flashcards
Kingdom: Animalia
Phylum: ____?___
Class: Hirudinea
Annelida
What type of parasites are in annelida?
Leeches and earthworms
What is the morphology of leeches?
Slender, leaf shaped bodies
2 sucks (larger posterior, smaller anterior)
Segmented
No exoskeleton
What is the smaller, anterior sucker of a leech called?
Pseudosucker
What does “annelida” mean?
Segmented
Where do leeches live?
Fresh water, salt water, moist, damp locations
How do leeches attach to the host?
Caudal sucker
What is hirudin?
Anticoagulant passed by leeches
Most powerful anticoagulant known
What do leeches look like when they are engorged with blood?
Dark and bloated
Explain the morphology of a leech
Mouth leads to pharynx with salivary glands that secrete hirudin
That leads to crop where ingested blood is stored
hermaphroditic
What is the invasion of the nose, mouth, pharynx, or larynx by leeches called?
Hirudiniasis
What are some ways you can detach leeches?
- Salt solution
- Alcohol
- Vinegar
- Lighted match
What are the leeches that is of veterinary significance and infests monkeys and domestic animals?
Limnatis and Dinobdella
What is the leech that infests wild and domestic aquatic birds
Theromyzon tessulatum
Aquatic leeches may cause…
- Nosebleeds
- Coughing up blood
- Vomiting blood
- Dyspnea
- Pain
- Suffocation
- Difficulty swallowing
