Difference between revisions of "Trichomonas gallinae"

From WikiVet English
Jump to navigation Jump to search
Line 36: Line 36:
 
==Disease==
 
==Disease==
 
''T. gallinae'' causes '''yellow, necrotic lesions''' and plaques in the gastrointestinal tract of birds, particularly in the [[Crop - Anatomy and Physiology | crop]] and [[Oesophagus | oesophagus]].
 
''T. gallinae'' causes '''yellow, necrotic lesions''' and plaques in the gastrointestinal tract of birds, particularly in the [[Crop - Anatomy and Physiology | crop]] and [[Oesophagus | oesophagus]].
'''[[Anaemia]]''' is caused when the parasite binds to [[Erythrocytes | erythrocytes]] and induces phagocytosis, causing '''haemolysis'''. For more information see [[Trichomonosis - Birds|avian trichomoniasis]].
+
'''[[Anaemia]]''' is caused when the parasite binds to [[Erythrocytes | erythrocytes]] and ingests them. It is then phagocytosed by leucocytes. For more information see [[Trichomonosis - Birds|avian trichomoniasis]].
  
 
{{Learning
 
{{Learning

Revision as of 19:40, 19 June 2011

Trichomonas gallinae
Kingdom Protista
Phylum Protozoa
Order Trichomonadida
Family Trichomonadidae
Genus Trichomonas
Species Trichomonas gallinae

Introduction

Trichomonas sp. with Giemsa staining. Note the posterior flagellae and undulating membrane. (Source - Wikimedia Commons)

Trichomonas gallinae is the protozoal pathogen responsible for Avian Trichomonosis.

The parasite is identifiable microscopically by its four anterior flagellae and well developed undulating membrane on one side. T. gallinae has no posterior flagellum. Its body is divided by an axostyle.

The ellipsoid nucleus of the parasite is usually found in the posterior aspect of the organism.

T. gallinae requires sugars, starch and glycogen from host cells to survive and replicate.

Transmission

Trichomonas gallinae is present worldwide in wild birds particularly the pigeon and other Columbids.

Transmission between pigeons occurs orally during feeding and mating behaviour.

Transmission to domestic chickens and turkeys is achieved through contaminated water troughs that have been visited by wild birds.

Disease

T. gallinae causes yellow, necrotic lesions and plaques in the gastrointestinal tract of birds, particularly in the crop and oesophagus. Anaemia is caused when the parasite binds to erythrocytes and ingests them. It is then phagocytosed by leucocytes. For more information see avian trichomoniasis.


Trichomonas gallinae Learning Resources
FlashcardsFlashcards logo.png
Flashcards
Test your knowledge using flashcard type questions
Trichomonas gallinae Flashcards
CABICABI logo.jpg
Literature Search
Search for recent publications via CAB Abstract
(CABI log in required)
Trichomonas gallinae Publications


References

Animal Health & Production Compendium, Trichomonas gallinae datasheet, accessed 02/06/2011 @ http://www.cabi.org/ahpc/