Difference between revisions of "Onchocerca - Cattle"

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*Filarial nematode (white thread-like, <6cm long)
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*Found in ligamentum nuchae and gastrosplenic ligament (UK), skin and muscle (overseas)
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{{Taxobox
*Indirect life cycle (intermediate hosts: black fly, ‘’Simulium’’ species and biting midge, [[Ceratopogonidae|‘’Culicoides’’ species]])
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|name              =''Oncocerca spp.
*Little or no significance (UK); subcutaneous and intramuscular nodules may cause economic loss due to carcass trimming (overseas).[[Category:Filarioidea]]
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|kingdom            =
[[Category:To_Do_-_Max]]
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|phylum            =
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|class              = [[Nematodes|Nematoda]]
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|sub-class          =
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|order              =
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|super-family      = [[Filarioidea]]
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|family            =
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|sub-family        =
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|genus              =
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|species            =
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}}
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==''Onchocerca gutturosa''==
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Also known as: '''''Onchocera lienalis — Ligamentary onchocercosis
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===Hosts===
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'''Intermediate hosts''': Blackflies
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'''Definitive hosts''': Cattle
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===Identification===
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''O. gutturosa'' are thin, white worms.  The females are capable of growing up to 60cm in length. The males are considerably smaller at around 4cm in length.
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===Life Cycle===
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Microfilariae are found on the surface of the host. [[Simuliidae|Blackflies]] feed and ingest the microfilariae. These develop and mature into L3 larvae. The blackflies then feed on another host, which becomes infected.
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==Onchocerca gibsoni==
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===Hosts===
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'''Intermediate hosts''': Midges ([[Ceratopogonidae|''Culocoides'']])
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'''Definitive hosts''':  Cattle
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===Identification===
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''O. gutturosa'' are thin, white worms ranging from 2-20cm in length. The microfilariae are around 260μm in length.
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===Life Cycle===
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As for ''Onchocera gutturosa''.
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{{Learning
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|flashcards = [[Cattle_Nematode_Flashcards|Cattle Nematode Flashcards]]
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|literature search =[http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=Onchocerca&occuring1=title&rowId=2&options2=AND&q2=cattle&occuring2=od&rowId=3&options3=AND&q3=&occuring3=freetext&x=46&y=9&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all ''Onchocerca'' spp. in cattle publications]
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}}
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{{OpenPages}}
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[[Category:Filarioidea]]

Latest revision as of 16:18, 18 July 2012


Oncocerca spp.
Class Nematoda
Super-family Filarioidea

Onchocerca gutturosa

Also known as: Onchocera lienalis — Ligamentary onchocercosis

Hosts

Intermediate hosts: Blackflies

Definitive hosts: Cattle

Identification

O. gutturosa are thin, white worms. The females are capable of growing up to 60cm in length. The males are considerably smaller at around 4cm in length.

Life Cycle

Microfilariae are found on the surface of the host. Blackflies feed and ingest the microfilariae. These develop and mature into L3 larvae. The blackflies then feed on another host, which becomes infected.

Onchocerca gibsoni

Hosts

Intermediate hosts: Midges (Culocoides)

Definitive hosts: Cattle

Identification

O. gutturosa are thin, white worms ranging from 2-20cm in length. The microfilariae are around 260μm in length.

Life Cycle

As for Onchocera gutturosa.


Onchocerca - Cattle Learning Resources
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Flashcards
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Cattle Nematode Flashcards
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Literature Search
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Onchocerca spp. in cattle publications




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