In vitro embryonation of Syphacia obvelata eggs

Grice R.L. and Prociv P. (1993) In vitro embryonation of Syphacia obvelata eggs. International Journal for Parasitology, 23 2: 257-260. doi:10.1016/0020-7519(93)90148-R


Author Grice R.L.
Prociv P.
Title In vitro embryonation of Syphacia obvelata eggs
Journal name International Journal for Parasitology   Check publisher's open access policy
ISSN 0020-7519
Publication date 1993-01-01
Sub-type Article (original research)
DOI 10.1016/0020-7519(93)90148-R
Volume 23
Issue 2
Start page 257
End page 260
Total pages 4
Subject 2405 Parasitology
2725 Infectious Diseases
Abstract Mouse infections with the pinworm, Syphacia obvelata, were evaluated as a potential model of human enterobiasis. Eggs of S. obvelata were found to be much less resistant to adverse environmental factors than those of Enterobius vermicularis, perishing rapidly when exposed to desiccation or to water. The average number of eggs produced by a female worm was 317 ± 29s.d. (range: 266-347), which is about 2-3% of the fecundity of E. vermicularis. Eggs expressed from gravid S. obvelata were incubated under various conditions, but the only reliable method of supporting complete embryonation was culture on a floating cellophane membrane. At 30°C on this substrate, eggs were found to be infective between 6 and 42 h, inclusive. The pre-patent period in mice fed these eggs was 11-15 days. The more fastidious developmental and survival requirements of Syphacia eggs indicate that transmission of this species depends on much more intimate contact between hosts than is required by E. vermicularis.
Keyword embryonation
Enterobius vermicularis
mouse parasites
nematode eggs
pinworms
Syphacia obvelata
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 23 Aug 2016, 13:45:38 EST by System User