metacestode


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metacestode

[¦med·ə′ses‚tōd]
(invertebrate zoology)
Encysted larva of a tapeworm; occurs in the intermediate host.
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The present report provides important new information on the prevalence of asexuality among tetrathyridia and underscores the need for further study of this variation among metacestodes of this cosmopolitan genus.
Efficacy of meat inspection will differ from the number and location of incisions, easily leading to missing T solium metacestode infections.
villosum (body cavity), the metacestode Nybelinia surmenicola (stomach wall), the digenean metacercaria Otodistomum sp.
The Caloosahatchee oysters also had metacestode infections at all sites and some, especially the higher salinity sites at Tarpon Bay and Gregs Reef, had prevalences of up to 90%.
Encysted taeniid metacestodes can remain dormant for years before asexual multiplication (13); thus, this animal could have become infected at virtually any point in its life.
In contrast, the metacestode found in the nutria and in the Panamanian patient described in 1965 was shown to be E.
multilocularis metacestode tissue either by examining morphologic features or by DNA detection by using modified PCR (28).
Human alveolar echinococcosis, caused by the metacestode of the fox tapeworm Echinococcus multilocularis, is considered to be the most pathogenic zoonosis in temperate and arctic regions of the Northern Hemisphere.
The life cycle of this tapeworm is indirect and sylvatic; eggs shed by the definitive host, mainly the Red Fox (Vulpes vulpes) in Europe, develop to the metacestode stage in arvicolid rodents, which serve as intermediate hosts.
Liver parts were preserved in 70% ethanol and 4% buffered paraformaldehyde after microscopy examination to detect metacestode lesions.
Metacestodes of moose, Alces alces, of the Chapleau Crown Preserve, Ontario.