Difference between revisions of "Crustacea"
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| + | {{toplink | ||
| + | |backcolour = | ||
| + | |linkpage =Parasites | ||
| + | |linktext =PARASITES | ||
| + | |pagetype=Bugs | ||
| + | }} | ||
| + | <br> | ||
| + | |||
| + | ==Introduction== | ||
| + | |||
| + | ==''Linguatula serrata''== | ||
| + | [[Image:Linguatula taenioides.jpg|right|thumb|150px|Copyright Cooper Curtice (Washington, Government Printing Office, 1890) Wikimedia Commons]] | ||
| + | *Also known as the 'tongue worm' | ||
| + | |||
| + | '''Recognition''' | ||
| + | *Tongue-like appearance | ||
| + | **Expanded anteriorly | ||
| + | |||
| + | *Adults are over 10cm in length | ||
| + | **Females measure betwen 30-130mm in length | ||
| + | **Males measure up to 20mm in length | ||
| + | |||
| + | *Transversely striated | ||
| + | |||
| + | '''Life Cycle''' | ||
| + | *6 month life cycle | ||
| + | |||
| + | *Adults inhabit the nasal passages of dogs and sometimes cats | ||
| + | |||
| + | *Eggs are expelled by coughing and sneezing or are passed out with the faeces | ||
| + | |||
| + | *Herbivorous intermediate hosts ingest the eggs | ||
| + | |||
| + | *Eggs hatch in the herbivore intestine | ||
| + | |||
| + | *Larvae migrate to the mesenteric lymph nodes and encyst to become infective nymphs | ||
| + | **Cysts measure 1mm in diameter | ||
| + | |||
| + | *When a dog eats infeced uncooked viscera the life cycle is completed | ||
| + | |||
| + | *Infective nymphs migrate from the viscera during chewing and crawl up into the nasal cavity via the soft palate | ||
| + | |||
| + | *Infective nymphs mature to adults in the nasal cavities and can survive for a year in the final host | ||
| + | |||
| + | '''Pathogenesis''' | ||
| + | *Causes [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|rhinitis]] | ||
| + | |||
| + | *Heavy infection leads to coughing, sneezing and nasal discharge | ||
| + | |||
| + | ==Sea Lice== | ||
| + | |||
| + | ==Links== | ||
| + | |||
| + | [[Respiratory Parasitic Infections - Pathology#Linguatula serrata|Pathology of ''Linguata serrata'' in the nasal passages]] | ||
Revision as of 17:22, 2 November 2008
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This article is still under construction. |
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Introduction
Linguatula serrata
- Also known as the 'tongue worm'
Recognition
- Tongue-like appearance
- Expanded anteriorly
- Adults are over 10cm in length
- Females measure betwen 30-130mm in length
- Males measure up to 20mm in length
- Transversely striated
Life Cycle
- 6 month life cycle
- Adults inhabit the nasal passages of dogs and sometimes cats
- Eggs are expelled by coughing and sneezing or are passed out with the faeces
- Herbivorous intermediate hosts ingest the eggs
- Eggs hatch in the herbivore intestine
- Larvae migrate to the mesenteric lymph nodes and encyst to become infective nymphs
- Cysts measure 1mm in diameter
- When a dog eats infeced uncooked viscera the life cycle is completed
- Infective nymphs migrate from the viscera during chewing and crawl up into the nasal cavity via the soft palate
- Infective nymphs mature to adults in the nasal cavities and can survive for a year in the final host
Pathogenesis
- Causes rhinitis
- Heavy infection leads to coughing, sneezing and nasal discharge