Lab 11: Fleas & Lice
Flea Testing <ul><li>Comb animal with flea comb </li></ul><ul><li>Pay special attention to face & base of tail </li></ul><...
Ctenocephalides spp. <ul><li>Order:  Siphonaptera  without wings </li></ul><ul><li>laterally compressed bodies with powerf...
Clinical Signs of Flea Infestation <ul><li>Flea Bite Dermatitis – allergic reaction to saliva </li></ul><ul><li>Anemia </l...
Disease Transmission <ul><li>Fleas transmit diseases as well as other parasites </li></ul><ul><li>Including: </li></ul><ul...
Treatment/Prevention  of Fleas <ul><li>Adults on host are small, can sometimes find jumping around in environment/bedding ...
Pthiraptera : Lice General Life Cycle <ul><li>Adult lice copulate on surface of skin </li></ul><ul><li>Females attach eggs...
Mallophaga :  Chewing/Biting Lice <ul><li>Smaller than sucking lice ( Anoplura )  </li></ul><ul><li>Yellowish </li></ul><u...
Anoplura :  Sucking Lice <ul><li>Larger than  Mallophaga   </li></ul><ul><li>Red to gray in color, depending on amount of ...
Lice:  More Interesting Info <ul><li>Clinical Signs: Severe anemia associated with sucking lice, esp. in young animals </l...
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parasitology lab notes

  1. 1. Lab 11: Fleas & Lice
  2. 2. Flea Testing <ul><li>Comb animal with flea comb </li></ul><ul><li>Pay special attention to face & base of tail </li></ul><ul><li>Wet a paper towel </li></ul><ul><li>Tap the flea comb onto the paper towel </li></ul><ul><li>If fleas are present, their “dirt” (feces) will dissolve onto the paper towel & stain it red (feces is digested blood!) </li></ul>
  3. 3. Ctenocephalides spp. <ul><li>Order: Siphonaptera without wings </li></ul><ul><li>laterally compressed bodies with powerful back legs </li></ul><ul><li>Piercing/sucking mouthparts </li></ul><ul><li>Spend most of time on host </li></ul>
  4. 4. Clinical Signs of Flea Infestation <ul><li>Flea Bite Dermatitis – allergic reaction to saliva </li></ul><ul><li>Anemia </li></ul><ul><li>Serious skin problems </li></ul><ul><li>Alopecia </li></ul><ul><li>Frequent scratching of rump & back legs </li></ul>
  5. 5. Disease Transmission <ul><li>Fleas transmit diseases as well as other parasites </li></ul><ul><li>Including: </li></ul><ul><ul><li>Dipyllidium canninum, Taenia spp., Dipetelonema reconditum </li></ul></ul><ul><ul><li>Bubonic plague </li></ul></ul><ul><ul><li>Endemic Typhus </li></ul></ul>Adult flea Flea larvae
  6. 6. Treatment/Prevention of Fleas <ul><li>Adults on host are small, can sometimes find jumping around in environment/bedding – eggs & larvae in cages </li></ul><ul><li>Educating clients about treating environment as well as pet is a must </li></ul><ul><li>Larvae can be removed w/topical solutions. </li></ul><ul><li>Adults can be killed using oral pesticide (ie: Capstar) </li></ul><ul><li>Prevention w/topical solutions (ie: Frontline, Advantage, etc.) </li></ul><ul><li>Indoor & outdoor sprays, foggers for environment </li></ul><ul><li>Remember: 5% of population on host & 95% in environment!!! </li></ul>Life cycle of the flea Treatments
  7. 7. Pthiraptera : Lice General Life Cycle <ul><li>Adult lice copulate on surface of skin </li></ul><ul><li>Females attach eggs to hairshaft </li></ul><ul><li>Eggs hatch </li></ul><ul><li>Nymphs emerge & molt 3x to adult stage </li></ul><ul><li>Severe infestations seen more in poorly fed, overcrowded & stressed animals </li></ul>
  8. 8. Mallophaga : Chewing/Biting Lice <ul><li>Smaller than sucking lice ( Anoplura ) </li></ul><ul><li>Yellowish </li></ul><ul><li>Large round head – wider than widest part of thorax </li></ul><ul><li>3 pairs of legs on thorax </li></ul><ul><li>Dog: Trichodectes canis </li></ul><ul><li>Cat: Felicola subrostatus </li></ul><ul><li>Cattle: Damalinia bovis </li></ul><ul><li>Poultry: Goniocotes gallinae </li></ul>Trichodectes canis Felicola subrostratus
  9. 9. Anoplura : Sucking Lice <ul><li>Larger than Mallophaga </li></ul><ul><li>Red to gray in color, depending on amount of blood ingested </li></ul><ul><li>Head narrower than widest part of thorax </li></ul><ul><li>Mouthparts are piercing and have pincer-type like claws </li></ul><ul><li>Dog: Linognathus setosus </li></ul><ul><li>Sheep: Solenopotes capillatus </li></ul><ul><li>Swine: Haematopinus suis </li></ul>Linognathus setosus Haematopinus suis
  10. 10. Lice: More Interesting Info <ul><li>Clinical Signs: Severe anemia associated with sucking lice, esp. in young animals </li></ul><ul><li>Infested animals are more susceptible to other diseases </li></ul><ul><li>Transmission: direct contact, fomites </li></ul><ul><li>Eggs are called nits , infestation is called pediculosis </li></ul><ul><li>Diagnosis with examination of haircoat w/ magnifying glass </li></ul><ul><li>Control & Treatment with effective pesticides, sprays & dusts </li></ul>
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