filarial worms Flashcards
InfectiveStage
L3 larvae
substance coming from the mosquito, which protects the larva
hemolymph
Affectsthe Lower Limb (Sometimes Scrotum
Wuchereria bancrofti
Vectors/Transmitters are species of:
○ Aedes
○ Anopheles
○ Culex
○ Mansonia
Wuchereria bancrofti
TheAdult Worms of _______________ inhabit the Lymphatic Vessels and Glands
Wuchereria bancrofti
Minute, Thread-Like, Smooth-Skinned, and Tapered on Both Ends
W. bancrofti Adult
● Sheathedwith Graceful Curves
● BodyNuclei Are Equidistant And Regularly Distributed
microfilaria of?
wuchereria bancrofti
● SecondaryKink, Upper Limb
Brugia malayi
● Threadlike, smooth, and tapered on both ends but
bluntly rounded at the terminal part
Brugia malayi
○ UnevenlyDistributed Body Nuclei
TwoProminent Terminal Nuclei (Diagnostic
Microfilaria Brugia malayi
eye worm
loa loa
Vectors/Transmitters
○ Tabanidflies of Genus Chrysops
○ DeerFly
○ Horsefly
○ MangoFly
○ MangroveFly
Loa loa
○ IrregularlyDistributed Body Nuclei that reached
up to the Caudal End
○ VerySmall or No Cephalic Spaces
VerySmall or No Cephalic Spaces ○ IrregularCurves of Body covered with Thin Transparent Sheath
Loa loa microfilaria
River Blindness
Onchocerca volvulus
Present in
○ Senegal, Mali, Sudan, Liberia, Uganda, Mexico
Onchocerca volvulus
Vectors/Transmitters
○ Blackfliesof Genus Simulium
Onchocerca volvulus
Adultworms are White, Opalescent, and Transparent
Onchocerca volvulus
Vectors/Transmitters
○ Midgesof Genus Culicoides
Mansonella ozzardi & perstans
○ Thetail end is tapered like a filament
○ Containsa column of four to six ovoid or bar-like body nuclei
Mansonella ozzardi
effective against the microfilariae of W. bancrofti only, not the adult worm
Ivermectin
● Nativein South America & Africa
Mansonella perstans
● Unsheathed
● Adultworms inhabit the body cavities in man
Mansonella perstans
○ Thebody nuclei fill up the entire body
NoDistinct Space at Cephalic or Tail End
Mansonella perstans
Enlarged lower extremities, due to lymphedema, assume the appearance of an?
elephant’s legs (elephantiasis)
Swelling in the eyes is also called
bug, bung, or bulge eye
