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As the definitive host ( rats ) eats an infected arthropod, cysticercoids present in the body cavity transform into the adult worm.
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definitive and host
For some coccidiomorphs, the original host has become the intermediate host while in others it has become the definitive host.
The duck is the definitive host for the acanthocephalan parasite.
The eggs are passed through the feces of the definitive host and it is the ingestion of these eggs that lead to infection in the intermediate host.
1 ) An adult worm resides in the small intestine of a definitive host.
2 ) Afterwards, gravid proglottids release eggs that are passed in the feces of the definitive host.
The definitive host then becomes infected after ingesting the cyst-containing organs of the infected intermediate host.
The definitive host of T. gondii is the cat, but the parasite can be carried by many warm-blooded animals ( birds or mammals, including humans ).
A primary host or definitive host is a host in which the parasite reaches maturity and, if possible, reproduces sexually.
In Trichinella spiralis, the roundworm that causes trichinosis, a host has both reproductive adults in its digestive tract and immature juveniles in its muscles, and is therefore considered both an intermediate host and a definitive host.
A dead-end host or incidental host is an intermediate host that does generally not allow transmission to the definitive host, thereby preventing the parasite from completing its development.
A spectacular example is the endoparasitoid Dicrocoelium dendriticum, the Lancet Liver Fluke that causes host ants to die clinging to grass stalks where grazers or birds may be expected to eat them and complete the parasitoidal fluke's life cycle in its definitive host.
In the definitive host, in which sexual reproduction occurs, eggs are commonly shed along with host feces.
definitive and rats
Rodents, especially rats, are definitive hosts and natural reservoirs of H. diminuta.
definitive and infected
As one can see from the life cycles illustrated above, all disease-causing species of Echinococcus are transmitted to intermediate hosts via the ingestion of eggs and are transmitted to definitive hosts by means of eating infected, cyst-containing organs.
Cercarial production from Radix natalensis experimentally infected with Fasciola gigantica is affected by the species of definitive host from which the eggs are obtained, as well as the different laboratory conditions.
Except in rare cases where infected humans are eaten by canines, humans are a dead-end or incidental host ( an intermediate host that does not allow transmission to the definitive host ) for E. multilocularis.
The definitive hosts ( birds and mammals ) become infected when they consume an amphibian or fish that has encysted metacercariae.
Tibetan foxes in the Sêrxü County of China's Sichuan province are heavily infected with Echinococcus, while foxes in western Sichuan are definitive hosts of alveolar hydatid disease.
The cycle starts again when the definitive host ingests the infected crustacean.
definitive and present
This may be the first definitive example of neurons communicating chemically where synapses are not present.
* La Boxe Française-Savate ( 1980 – present ): the technical abilities of both Savate's major kicking arsenal and English Boxing were merged into a definitive sport of combat.
On the site of present day Granada there seems to have existed a Roman settlement, but no definitive proof has been found.
# Episodic, characteristic definitive spells of vertigo lasting 20 minutes to 24 hours with no unconsciousness, vestibular nystagmus always present.
Australians for Constitutional Monarchy and the Australian Monarchist League argue that no model is better than the present system and argue that the risk and difficulty of changing the constitution is best demonstrated by inability of republicans to back a definitive design.
Depending upon the type of infection present, an appropriate specimen is obtained accordingly and sent to the laboratory for definitive identification by using biochemical or enzyme-based tests.
These are clearly abnormal cases and, if present, are considered definitive evidence that a tumor is malignant rather than benign.
At present, the fossil record of definitive dermopterans is limited to two species of the Eocene and Oligocene cynocephalid genus Dermotherium.
The presence of a noncaseating epithelioid granuloma in a gastrocnemius specimen is definitive evidence of sarcoidosis, as other tuberculoid and fungal diseases extremely rarely present histologically in this muscle.
Fuller also questioned a definitive line between male and female: " There is no wholly masculine man ... no purely feminine " but that both were present in any individual.
Notes From The Edge, 2002 ( retrieved 17 August 2012 ).</ ref > Maurice Gibb was also present during the All Things Must Pass sessions, having been a friend of Starr's, and is said to have played keyboards on " Isn't It a Pity ", although there is no definitive evidence as to which version.
With Mike Rathet, he wrote the definitive book on the AFL, " The Other League-the Fabulous Story of the American Football League ", with colorful graphics and action photos, which were not often used to present the AFL.
The only definitive method for determining if cancerous or precancerous cells are present is through biopsy and microscopic evaluation of the cells in the removed sample.
The definitive urogenital sinus ( also known as the persistent cloaca ) is a part of the human body only present in the development of the urinary and reproductive organs.
Even if radiographic malignant features are present, these findings may also represent other tumors and definitive diagnosis must be made immunochemically.
The first stamps of Iraq were a definitive series that appeared in 1923 ; the set of 12 included eight different designs depicting scenes and images from ancient history and the present day.
" Others see Derrida's ( 1982 ) representationalism as consistent with the notion of a mind that has perceptually changing content without a definitive present instant.
There are references to earlier county organisations, especially the MCC Thursday Club around 1800, but the definitive Middlesex club is the present Middlesex CCC.
Labor Days is considered to be Aesop Rock's definitive work, hailing near unanimous praise from all critics, and becoming a cornerstone of the underground rap movement from the late 90's through the present.
The present definitive edition is that edited by Richard Dalby as Uncanny Tales and published by the Tartarus Press ( 1997 ; 2008 ).
Rabbeinu Chananel trained Alfasi to deduce and to clarify the Halakha from Talmudic sources, and Alfasi then conceived of the idea of compiling a comprehensive work that would present all of the practical conclusions of the Gemara in a clear, definitive manner.
Although the FD-causing gene has been identified and it seems to have tissue specific expression, there is no definitive treatment at present.
" The band was not happy with the musical execution or production of the 1996 release, and wanted to present more definitive realizations of the compositions.
# adult worm present in intestine of definitive host
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