Classification Phylum




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10- FLEAS


Classification

  1. Phylum: ______________




  1. Class: ______________




  1. Order: ____________


Identification

  1. 1-8 mm (~2-4 mm)




  1. _________________________




  1. ____________________




  1. ______________________________________




  1. Mouthparts:

    1. Three stylets




    1. Pierce skin and suck blood




Food

  1. ______________________________




  1. _____________________________________________




  1. ___________________________________




  1. ___________________________________________________________ ____________________

Metamorphosis

  1. ________:

    1. __________

    2. _____________

    3. _____________

    4. ___________


Generalized Life cycle

  1. Mating usually occurs on the host




  1. Eggs

    1. Deposited on the hairs or feathers of the host or in the nest

    2. Not sticky; typically drop to the ground or into the nest




  1. Larvae:

    1. __________________

    2. ____________________

    3. ________________________________________________

    4. _______________________

    5. Three instars

    6. Completed ~2 w



  1. Pupae:

    1. Produce silken cocoon

    2. ____________________________________________________:

      1. ________________

      2. ________________

      3. ____________________________________________

    3. Completed ~2 w




  1. Common flea species:

    1. Oriental rat flea: Xenopsylla cheopis

    2. Dog flea: Ctenocephalides canis

    3. Cat flea: Ctenocephalides felis

    4. Human flea: Pulex irritans (Pacific coast)

    5. Ground squirrel flea: Oropsylla Montana

    6. Rabbit flea: Cediopsylla simplex

    7. Mouse flea: Leptosylla segnis





Flea Borne Diseases

Plague

  1. History:

    1. 1 Samuel 4 – 6

      1. Philistines had defeated the Israelites at Aphek (~1000 BC)

      2. Captured the ark of the covenant

      3. Took the ark to their cities

      4. Their territory became overrun with mice and rats

      5. The hand of the Lord was against them:

        1. Smote the men with emerods in their secret parts

        2. Probably buboes in their groin

      6. The terrified Philistines returned the ark and offered five golden mice and five golden emerods as a peace offering



    1. Black death:

      1. 14th century

      2. Caused ~ 25 million deaths (1/4 of the world’s population)



    1. Great plague of England:

      1. 1664-1665

      2. Sir Isaac Newton fled London to avoid the disease

      3. In seclusion, he developed calculus



    1. U.S.:

      1. 1900-1992

      2. 869 cases reported



  1. Plague disease:

    1. Pathogen:

      1. __________________

      2. Formerly Pasteurella pestis




    1. Three clinical forms:

      1. __________________

        1. ______________________________________________

        2. _______________________

        3. ______________________




      1. ________________:

        1. ___________________________________

        2. _________________________________________




      1. ____________________________________________



  1. Transmission:

    1. _______________________________________________________

    2. __________________________________________



  1. Flea infection:

    1. _______________________________

    2. _______________________________________________________

    3. ________________________________________________

    4. __________________________________________

    5. _______________________________________________________________________________________________________

    6. ________________________________________________________________


Typhus

  1. Pathogen: ______________________



  1. Reservoir Hosts:

    1. ______________________

    2. ______________________




  1. Transmission:

    1. _______________________________________

    2. ______________________________________

    3. ________________________________________________



Dog Tapeworms

  1. ________________________



  1. ___________________________________________________




  1. _____________________________




  1. ________________________________________________________




  1. __________________________________________________




  1. _____________________________________________________________







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