English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

This is for my Science report and i really need to noe about them and if u can please name a parasite that is helpful to humans and how it is helpful

2006-10-29 00:33:43 · 11 answers · asked by Anonymous in Science & Mathematics Biology

11 answers

Look at this website

2006-10-29 00:38:03 · answer #1 · answered by Anonymous · 0 0

I know one! I've watched an episode of Ripley's Believe it or not and have discovered that leeches do somehow help people in certain situations..! Here's the information..

Leech saliva contains a number of compounds which assist in its feeding. An anaesthetic limits the sensations felt by the host (and thus reduces the chance of the host trying to detach the leech). A vasodilator causes the blood vessels near the leech to become dilated, and thus provide the leech with a better supply.

Lastly, the leech saliva contains a peptide called hirudin, which is a highly effective anticoagulant. The leech needs this to prevent blood clots (which would block its feeding) from forming in the wound created by its mouthparts. These properties are difficult to achieve using other medical techniques, and it is for this reason that leeches have come back into clinical practice in the last 25 years. The small amounts of hirudin present in leeches makes it unsuitable to be harvested for more general medical use, so hirudin (or related chemicals) have been synthesised using recombinant-DNA technology.

Bdellatomy is the practice of cutting the leech open slightly while it is sucking blood to let the blood in it out, so, thinking that it is not full yet, the leech continues to bite instead of detaching itself. This practice was first recorded in 1868 by Daily News.

I hope I helped you..! Good luck in your report!!

2006-10-29 07:45:22 · answer #2 · answered by GeLo'14 3 · 0 0

In the human intestines there are microbacteria that can be classified as parasites (as they are not able to live outside the host) that help to perform the function of digestion in humans. This is an example of a symbiotic relationship, where both the host and the parasite gain mutual benefit from each other. This website may give you more info. Good subject, Good luck with your research and project!

2006-10-29 07:52:25 · answer #3 · answered by missbeehayv 2 · 0 0

Endoparasites
(endo = within; parasites that live inside their hosts)


Plants
Rafflesia

Animals
Acanthocephala
Candiru (Vampire fish of Brazil)
Cestoda (tapeworms)
Clonorchis sinensis (the Chinese liver fluke)
Cymothoa exigua
Dracunculiasis (Guinea Worm Disease)
Enterobius vermicularis
Oestridae (bot flies)
Sacculina
Strongyloides stercoralis

Fungi
Ringworm
Gymnosporangium and other rusts
Pyrenophora teres

Protists (Protozoa)
Balantidium coli (the only ciliated protozoan to infect humans)
Giardia lamblia (the most common intestinal protozoan in the United States)
Entamoeba histolytica (causes Amebiasis, common in developing countries)
Kinetoplastid protists of the Trypanosoma and Leishmania genera (sleeping sickness, Chagas disease and leishmania)
Plasmodium (malarias)

Ectoparasites
(ecto = outside; parasites that live on but not within their hosts, for example, attached to their skin)


Plants
Broomrape
Cuscuta
Mistletoe
Toothwort
The wood rose, Dactylanthus taylorii

Animals
Acarina (Ticks, some mites)
many Hippoboscoidea (Tsetse Flies, Sheep Keds, and relatives)
Hirudinea (some leeches)
Phthiraptera (Lice)
Siphonaptera (Fleas)
Tantulocarida

2006-10-29 07:45:14 · answer #4 · answered by Jeanjean 4 · 1 0

Leaches are helpful. They are used medically to reduce bleeding.
Maggots are used medically also. They only eat dead flesh so are applied to patients to remove dead flesh and leave healthy flesh.
A Tapeworm is a parasite.
A Hookworm is also a parasite.
Misteltoe is a parasite to trees.

2006-10-29 07:42:51 · answer #5 · answered by dragonrider707 6 · 0 0

Rafflesia
Acanthocephala
Candiru
Cestoda (tapeworms)
Ringworm

and finally:
My uncle Ted
and from the X-Files:
Black oil

2006-10-29 07:53:37 · answer #6 · answered by Dr. J. 6 · 0 0

Lenny, Walter, Eddie, Chuck, and Pablo.

2006-10-29 08:02:22 · answer #7 · answered by Jimmy H 4 · 0 0

Ticks, ringworm, heartworm, rabies, fleas, pin worms, aphids, spider mites.

2006-10-29 08:31:26 · answer #8 · answered by pamsolo69 1 · 0 0

ticks, fleas, leeches, candirus (vampire fish of Brazil), and lice.

2006-10-29 07:46:09 · answer #9 · answered by Anonymous · 0 0

http://www.zhealthinfo.com/parasites.htm

I don't mind doing the research, but you need to do the reading.

Happy hunting.

2006-10-29 07:42:46 · answer #10 · answered by rrrevils 6 · 0 0

fedest.com, questions and answers