Animal Parasitology

"Man is the only animal which esteems itself rich in proportion to the number and voracity of its parasites"
George Bernard Shaw (1856-1950) Irish writer

As a part of my graduate project, I collected some mosquito larvae and mounted one on a slide.
Click on the photos to enlarge.
   Mosquito larvae in small vial of water
   Mosquito larva on slide
I also mounted the following.
 Acanthocephalan from a turtle
Tick 1
 Tick 2

Having completed my graduate level course of Animal Parasitology in the Spring of 2017, I wanted to share images of parasites in various stages of development. These photos were taken through the eyepiece of a microscope with my cell phone in the laboratory setting at Northeastern State University. Many thanks to my professors, Dr. Craig Clifford and Dr. Mark Paulissen! Links to the Centers for Disease Control are provided for additional information.

Leishmania donovani
promastigotes of Leishmania donovani  (visceral leishmaniasis)

promastigotes of Leishmania tropica  (cutaneous leishmaniasis)

trophozoite of Giardia duodenalis 

trypomastigotes of Trypanosoma brucei rhodesiense (trypanosomiasis, East African sleeping sickness)

trypomastigote of Trypanosoma cruzi (Chagas disease, American trypanosomiasis)

gametocyte and trophozoites of Plasmodium falciparum (malaria)

tachyzoites of Toxoplasma gondii (toxoplasmosis)

trophozoites of Trichomonas vaginalis (trichomoniasis)

egg and adult of Clonorchis sinensis (clonorchiasis)

microfilaria of Dirofilaria immitis (dog heartworm)

egg and adult of Trichuris trichiura (human whipworm)

egg and adult male of Schistosoma haemotobium
egg and adult male of Schistosoma mansoni
egg and adult male of Schistosoma japonicum

egg and adult female of Enterobius vermicularis (pinworms)

scolex of Taenia solium (pork tapeworm)

cysticercus of Taenia solium

proglottid and scolex of Diphyllobothrium latum (the fish or broad tapeworm), the largest human tapeworm

eggs, mature proglottid and gravid proglottid of Dipylidium caninum (the double-pored dog tapeworm) mainly infects dogs and cats

eggs of Ascaris lumbricoides - the largest nematode (roundworm) parasitizing the human intestine

egg and adult male Necator americanus (human hookworm)

For more than three centuries, a plague of unshakable lethargy blanketed the American South.

It began with “ground itch,” a prickly tingling in the tender webs between the toes, which was soon followed by a dry cough. Weeks later, victims succumbed to an insatiable exhaustion and an impenetrable haziness of the mind that some called stupidity. Adults neglected their fields and children grew pale and listless. Victims developed grossly distended bellies and “angel wings”—emaciated shoulder blades accentuated by hunching. All gazed out dully from sunken sockets with a telltale “fish-eye” stare.

The culprit behind “the germ of laziness,” as the South’s affliction was sometimes called, was Necator americanus—the American murderer. Better known today as the hookworm, millions of those bloodsucking parasites lived, fed, multiplied, and died within the guts of up to 40% of populations stretching from southeastern Texas to West Virginia. Hookworms stymied development throughout the region and bred stereotypes about lazy, moronic Southerners.

adult male Ancyclostoma duodenale (human hookworm)

adult worm and hydatid cyst of Echinococcus granulosus (hydatid disease)

The remaining images are vectors for disease.
female and male heads of Aedes species of mosquito

larva and heads of female and male Anopheles species

egg raft, larva, pupa, and heads of female and male Culex species mosquito

Phthirus pubis, the pubic or crab louse

Sarcoptes scabiei var. hominis, the human itch mite

female and male Pulex irritans flea (human flea)

female and male Ctenocephalides species of flea

female and male Xenopsylla cheopis - The Oriental rat flea (Xenopsylla cheopis) is the primary vector for Yersinia pestis (plague)

Beverly Afzali,
Feb 7, 2020, 7:10 PM