Difference between revisions of "Oesophagostomum"
| Line 14: | Line 14: | ||
|species = | |species = | ||
}} | }} | ||
| + | ==Introduction== | ||
''Oesophagostomum'' is from the superfamily ''[[Strongyloidea]]''. The female is larger than the male at around 2cm in length. The family is characterized by a large buccal capsule, and has leaf crowns surrounding the mouth. | ''Oesophagostomum'' is from the superfamily ''[[Strongyloidea]]''. The female is larger than the male at around 2cm in length. The family is characterized by a large buccal capsule, and has leaf crowns surrounding the mouth. | ||
| Line 19: | Line 20: | ||
==''O. radiatum''== | ==''O. radiatum''== | ||
| − | + | Also known as: '''''Nodular worm | |
| − | |||
| − | |||
| − | |||
| − | |||
===Hosts=== | ===Hosts=== | ||
| Line 38: | Line 35: | ||
==''O. dentatum''== | ==''O. dentatum''== | ||
| − | + | Also known as: '''''Nodular worm | |
| − | |||
| − | |||
| − | |||
| − | |||
===Hosts=== | ===Hosts=== | ||
| Line 57: | Line 50: | ||
==''O. columbianum''== | ==''O. columbianum''== | ||
| − | + | Also known as: '''''Nodular worm | |
| − | |||
| − | |||
| − | |||
| − | |||
===Hosts=== | ===Hosts=== | ||
| Line 76: | Line 65: | ||
==''O. venulosum''== | ==''O. venulosum''== | ||
| − | + | Also known as: '''''Oesophagostomum viginimembrum — Large bowel worm | |
| − | |||
| − | |||
| − | |||
| − | |||
===Hosts=== | ===Hosts=== | ||
| Line 93: | Line 78: | ||
The prepatent period is around 49 days. | The prepatent period is around 49 days. | ||
| + | ==Literature Search== | ||
| + | [[File:CABI logo.jpg|left|90px]] | ||
| + | |||
| + | |||
| + | Use these links to find recent scientific publications via CAB Abstracts (log in required unless accessing from a subscribing organisation). | ||
| + | <br><br><br> | ||
| + | [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=Oesophagostomum&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&x=68&y=11&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all ''Oesophagostomum'' publications] | ||
[[Category:Strongyloidea]] | [[Category:Strongyloidea]] | ||
Revision as of 11:41, 4 October 2010
 |
This article has been peer reviewed but is awaiting expert review. If you would like to help with this, please see more information about expert reviewing. |
| Oesophagostomum | |
|---|---|
| Class | Nematoda |
| Super-family | Strongyloidea |
Introduction
Oesophagostomum is from the superfamily Strongyloidea. The female is larger than the male at around 2cm in length. The family is characterized by a large buccal capsule, and has leaf crowns surrounding the mouth.
O. radiatum
Also known as: Nodular worm
Hosts
Cattle and buffalo.
Identification
O. radiatum are thin white worms around 2cm in length. In the male, the bursa is large and well developed. In both the male and the female, there are numerous leaf crowns surrounding the mouth, and there is a bottle necked appearance on the anterior end.
Life Cycle
Infection of the host is via ingestion of L3. They moult and transform into L4 within the small and large intestine. The larvae move to the colon where they mature into adults.
The prepatent period is 35-40 days.
O. dentatum
Also known as: Nodular worm
Hosts
Pigs
Identification
The adults are around 1cm in length, and have shallow buccal capsules.
Life Cycle
The larvae enter the intestine, and burrow into the wall where they remain for several weeks, forming nodules. The larvae then re-enter the lumen of the intestine where they mature, and lay eggs.
The prepatent period is 40-50 days.
O. columbianum
Also known as: Nodular worm
Hosts
Sheep and goats.
Identification
The adults are large thin worms around 2cm in length. The male has a large, well developed bursa.
Life Cycle
Infection is by ingestion of the L3, which pass into the small or large intestine, and burrow in the mucosal wall forming nodules. The larvae then develop into L4 and move to the colon, where they fully mature into adults.
The prepatent period is around 45 days.
O. venulosum
Also known as: Oesophagostomum viginimembrum — Large bowel worm
Hosts
Sheep, deer, goats, and camels.
Identification
The females are larger than the males at around 2mm in length. The male has a well developed bursa.
Life Cycle
The eggs are past out into the environment in faeces. They hatch quickly, forming L1. L1 then transforms in L2, which moults into L3; which is the infective stage. The host then becomes infected by ingesting the infective larvae when grazing on the pasture. The L3 mature into L4 within the intestine, and then pass onto the colon to complete development.
The prepatent period is around 49 days.
Literature Search
Use these links to find recent scientific publications via CAB Abstracts (log in required unless accessing from a subscribing organisation).
Oesophagostomum publications