By: Norman Green
The name coelacanth is used to describe an order of fish that were highly successful, and common in the fossil record from the Devonian period, approximately 400 million years ago, up until the Cretaceous period, which ended 65 million years ago. Their fins were attached...
By: Amelia Emery
The great hammerhead shark is the largest species of hammerhead sharks. Known scientifically as Sphyrna mokarran, it is one of nine kinds of sharks that all share the distinctly shaped head that sets them apart from other sharks and gives them the name hammerhead. Found...
Life cycle of the roundworm Ascaris lumbricoides
By: Christyl Rivers
The life cycle of the Ascariasis, also known as a roundworm, is very common, and is found in about 25% percent of human beings. It is a parasite with a complex life cycle. It is most commonly spread by unwashed produce, or raw foods, that...
By: Olivia Bredbenner
Giardia is the most prevalent protozoal infection in the human intestines. By its nature, it aggressively causes an infection in about 75 % of those exposed. It manifests itself with abdominal bloating, flatulence, nausea, vomiting and fatigue. It has been estimated that up to 2...
By: Alison Bowler
The parasites Schistosoma species have a truly interesting, if somewhat complicated, life cycle. According to the WHO, human infections with this parasite occur from six species of Schistosoma these are - S. mansoni, S. haematobium, S japonicum, S. intercalatum, S. guineansis and S. mekongi...
By: Phyllis Logie
The Roundworm is a parasite which is able to survive by depending on other organisms. It is most commonly found in areas where the sanitation is poor or in areas where human excrement is used as plant fertilizer. Over one billion people worldwide, including the...
The life cycle of Trichinella spiralis
By: Daniel Cloud
Trichinella spiralis, a nematode parasite, is the cause of the disease trichinosis, known to be found in undercooked pork products. Trichinella are the smallest known parasites to infect humans and have a strange life cycle. Small adult worms mature within the intestines of an intermediate...
By: Jerome Carter
Schistosoma are a group of parasitic trematode flatworm species. These parasites are responsible for causing the disease schistosomiasis, also known as bilharziasis, bilharzia or snail fever. In order to complete their life cylce of schistosoma worms require at least two different kinds of hosts- human...
By: Dr Pandula Siribaddana
Popularly known as ‘roundworm’, Ascaris lumbricoides is probably the largest nematode to infect humans as it can grow up to a meter with an average size of about 45 cm. It affects over 1 billion people worldwide and its prevalence is high in the...
By: Srikanth Radhakrishna
Parasites are organisms which benefit at the expense of other living beings (hosts). Trichinella spiralis is a nematode (round worm) parasite. Also called as pork worm, this parasite is found in human beings, bears, pigs and rats. It is very common in raw or undercooked...

 

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