1. Parasites

2. What is a parasite?
Parasitism is a type of symbiotic relationship between two different organisms. The parasite benefits from a prolonged, close association with the host, which is harmed
Many possess special adaptations

3. Tapeworms

4. Tapeworms Up to 35 feet long Lay millions of eggs each day
Attach to the intestines and absorb nutrients from its host

5. Hookworms

6. Hookworms Burning lake water?
Hookworms enter through the skin and migrate through the bloodstream to the lungs and intestines. They may also be ingested through contaminated food or water. You may have itchiness or redness where the larvae penetrate the skin (most likely your feet).
One symptom is craving to eat soil

7. Roundworms

8. Roundworms
Here is a staggering statistic: the World Heath Organization reported that about 25% of the world’s population is infected with roundworm.
These parasites can grow to 13 inches inside the intestine and can lay as many as 300,000 eggs in a single day
Ascaris lumbricoides
Partial cause of distented stomachs in starving children

9. Pinworms

10. Pinworms
Have you ever been awakened in the middle of the night by an itchy anus? If so you have these little guys. They sneak out at night to lay their eggs on the fertile skin surrounding your anus!
Get these nasty little guys from contaminated food

11. Special parasites
While all parasites possess special adaptations to be able to survive in their host, some are more bizarre than others…..

12. Human Bot Fly

13. Human bot fly
Lays egg in human host. Larvae grows and eventually falls out

14. Candiru

15. Candiru Type of catfish with tiny barbs Usually parasitizes fish gills
Has been known to follow urea trails and swim up the urethra

16. Castrating Barnacles

17. Castrating barnacles Briarosaccus callosus
Find way into crab through a ‘kink’ in exoskeleton
Eventually can control crab

18. Leucochloridium paradoxum

19. Leucochloridium paradoxum
Leucochloridium paradoxum are a type of fluke (a.k.a., parasitic flatworm) that prey on
They take up residence in the snail’s eyestalks. As they mature, the flukes become visible through the snail’s translucent skin and look like caterpillars.
Birds eat these, and the cycle starts again
Leucochloridium paradoxum are a type of fluke (a.k.a., parasitic flatworm) that prey on birds—a fascinating turn of events considering they begin their lives as eggs in bird droppings. Thus, the problem facing baby Leucochloridium paradoxum is, “How do I get myself back into one of those feathery things?” Taking a page from Greek history, the infant flatworms rely on Trojan trickery. First, they hang out in the droppings until a snail happens along and eats the bird dung. Then they initiate their devious plan of action by taking up residence in the snail’s eyestalks. (Sure, it sounds slimy and gross to us, but after a childhood spent living in bird feces, it’s a step up.) As they mature, the flukes become visible through the snail’s translucent skin. And that’s when things really get interesting. To a bird, this fluke-filled eyestalk looks like a caterpillar. So the bird devours the stalk and ends up with a bellyful of Leucochloridium paradoxum that will, of course, lay eggs and begin the cycle again

20. Cymothoa exigua

21. Cymothoa exigua A parasitic crustacean
Attaches itself to a fishes tongue and feeds on the blood
Eventually the tongue atrophies, and this parasites functionally replaces the old tongue with its own body.
As a youngster, this nasty little parasitic crustacean begins a life of terror by fighting its way through the gills of its fish host of choice, the snapper. Once there, it attaches itself to the fish’s tongue and begins feeding on the rich blood pumping through the artery underneath. As the parasite grows, it drinks more blood and eventually causes the tongue to atrophy and disintegrate. But does the Cymothoa mouth-squatter leave its fishy friend tongueless? Of course not. It does what any crafty parasite would do and replaces the old tongue with its own body. The fish is actually able to use the parasite just like a normal tongue

22. Lamprey’s

23. Lamprey Type of parasitic fish
Attaches to passing fish and feeds on their blood
Very specialized mouth parts

24. Filaria Worm

25. Filaria worm, Wuchereria bancrofti
Elephantitis is a disease caused by the parasite Wuchereria bancrofti. This parasite is introduced into the body by a mosquito bite. The parasite will then migrate to the lymphatic system. The parasite does not cause any direct harm to the host; it is the side effects of the infestation that cause the damage.
Elephantiasis is the result of the parasites blocking the lymphatic ducts. With the lymphatic ducts blocked, the lymph fluid does not circulate well and will accumulate, causing swelling.

26. Filaria worm, Wuchereria bancrofti
filarial worm embryos living underneath the skin can sense the onset of night, which is their cue to head upward to the skin’s surface in order to increase their chances of being picked up by a passing mosquito
But not all organism negatively affect their host:

27. Coolest Symbiosis Example Boxer Crab, Lybia tessellata

28. Top 5 Parasite Removals I hope you are ready for this….