Difference between revisions of "Heterakis"

Revision as of 12:17, 28 April 2010

HETERAKIS GALLINAE

An atypical ascarid.
Lives in the caeca.
1.5cm long, relatively slender and has a pointed tail. (Thus, it does not look like an ascarid, but is otherwise typical of the group).
Eggs similar to those of Ascaridia.
Life-cycle is non-migratory.
Earthworms can act as transport hosts.
This worm is not very pathogenic – its main importance is as the vector of Histomonas meleagridis, the protozoan parasite that causes 'blackhead'.
Another species of Heterakis is a serious pathogen of pheasants. This burrows deeply into the caecal mucosa causing nodule formation, leading to weight-loss and death.

@@ Line 1: / Line 1: @@
-{{Taxobox
+=== '''''HETERAKIS GALLINAE''''' ===
-|name               =''Heterakis spp.
+*An atypical ascarid.
-|kingdom            =
+*Lives in the caeca.
-|phylum             =
+*1.5cm long, relatively slender and has a pointed tail. (Thus, it does not look like an ascarid, but is otherwise typical of the group).
-|class              =[[Nematodes|Nematoda]]
+*Eggs similar to those of ''Ascaridia''.
-|sub-class          =
+*Life-cycle is non-migratory.
-|order              =
+*Earthworms can act as transport hosts.
-|super-family       =[[Ascaridoidea]]
+*This worm is not very pathogenic – its main importance is as the '''vector of ''Histomonas meleagridis''''', the protozoan parasite that causes 'blackhead'.
-|family             =
+*Another species of ''Heterakis'' is a serious pathogen of pheasants. This burrows deeply into the caecal mucosa causing nodule formation, leading to weight-loss and death.
-|sub-family         =
-|genus              =
-|species            =
-}}
-==''Heterakis gallinarum''==
-Also known as: '''''Heterakis papillosa — Heterakis gallinae — Heterakis vesicularis
+[[Category:Ascaridoidea]][[Category:Poultry_Nematodes]]
-===Hosts===
-Chickens, turkeys, pigeons, pheasants and many other wild birds.
-===Identification===
-''H. gallinarum'' are white worms, which may grow up to 1.5cm in length.  Both the males and females have thin elongated tails.
-===Life Cycle===
-The eggs are present on the ground, and are taken up by earthworms acting as transport hosts. The eggs hatch and develop into L3. The definitive host e.g. chickens, then ingests the earthworms and become infected. The prepatent period is 4 months.
-==''Heterakis isolonche''==
-Also known as: '''''Caecal worm
-===Hosts===
-Pheasant, grouse, chickens, and ducks.
-===Identification===
-''H. isolonche'' are white worms around 1.5cm in length.  The eggs are ovoid and similar in appearance to ''Ascaridia''.
-===Life Cycle===
-As for ''H. gallinarum''.
-==''Heterakis dispar''==
-===Hosts===
-Ducks, geese, and chickens.
-===Identification===
-Similar in appearance to ''H. gallinarum'' except larger.
-===Life Cycle===
-Similar to that of ''H. gallinarum'', except the prepatent period is around 12 months.
-{{Learning
-|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=Heterakis&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&x=57&y=5&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all ''Heterakis'' spp. publications]
-}}
-[[Category:Ascaridoidea]]
-[[Category:Avian Nematodes]]

Difference between revisions of "Heterakis"

Revision as of 12:17, 28 April 2010

HETERAKIS GALLINAE

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