Difference between revisions of "Chrysomya bezziana"

Revision as of 20:01, 30 March 2010

Screw Worm Myiasis

Screw worm larvae - John Kucharski - Wikimedia Commons

C. bezziana cause myiasis in both animals and humans

Located mainly in tropical regions

Larvae are obligate parasites

Recognition

Similar to Calliphora spp.
- Iridescent
- Clear wings
- Blue abdomen

Longitudinal stripes on thorax

Larvae have bands of spines
- Look like screws

Life cycle

Eggs laid in wounds or body cavities

Larvae feed as colonies

Larvae drop to the ground to pupate

Pathogenesis

Spiracles are exposed as larvae feed which expands the wound
- Creates a foul smelling lesion

Cause irritation and pyrexia

Control

In the USA
- Mass eradication through the release of sterile males
- Currently only persists where flies have migrated across the Mexican border

In Africa
- Introduced into Libya through the importation of infested livestock
- Sterile males released
- Eradication occurred in 1991

@@ Line 1: / Line 1: @@
-{{OpenPagesTop}}
+===Screw Worm Myiasis===
-Also known as: '''''Screw Worm — Old world screwworm'''''
+[[Image:Screw Worm.jpg|right|thumb|150px|Screw worm larvae - John Kucharski - Wikimedia Commons]]
+*''C. bezziana'' cause myiasis in both animals and humans
-{{Taxobox
+*Located mainly in tropical regions
-|name               = ''Chrysomya bezziana
-|kingdom            =
-|phylum             =
-|class              = [[:Category:Insecta|Insecta]]
-|sub-class          =
-|order              = Diptera
-|super-family       =
-|family             = [[Calliphoridae]]
-|sub-family         =
-|genus              =
-|species            =''Chrysomya bezziana
-}}
-[[Image:Chrysomya bezziana.jpg|thumb|right|250px|''Chrysomya bezziana'' - FAO/IAEA, Wikimedia Commons]]
+*Larvae are '''obligate''' parasites
-==Hosts==
-Cattle, sheep, dogs and occasionally humans.
-==Identification==
+'''Recognition'''
-''C. bezziana'' is a blue/green fly, with 4 longitudinal black stripes, and around 8-10mm in length.  They are similar to [[Calliphoridae|''Calliphora spp.'']], and are of the family [[Calliphoridae]].
+*Similar to [[Calliphoridae|''Calliphora spp.'']]
+**Iridescent
+**Clear wings
+**Blue abdomen
-==Life Cycle==
+*Longitudinal stripes on thorax
-''C. bezziana'' is an obligate agent of myiasis.  The female lays eggs in fresh open wounds or body orifices.  Eggs then hatch and the larvae begin to penetrate the skin. The larvae then mature and begin to pupate, before becoming fully reproductive adults.
-The complete life cycle from egg to adult is 2-3 weeks.
+*Larvae have bands of spines
+**Look like screws
-{{Learning
-|literature search = [http://www.cabdirect.org/search.html?q=title%3A%28%22Chrysomya+bezziana%22%29 ''Chrysomya bezziana'' publications]
-}}
+'''Life cycle'''
+*Eggs laid in wounds or body cavities
-{{OpenPages}}
+*Larvae feed as colonies
-[[Category:Myiasis_Producing_Flies]]
+*Larvae drop to the ground to pupate
-[[Category:Expert_Review]]
+'''Pathogenesis'''
+*Spiracles are exposed as larvae feed which expands the wound
+**Creates a foul smelling lesion
+*Cause irritation and pyrexia
+'''Control'''
+*In the USA
+**Mass eradication through the release of sterile males
+**Currently only persists where flies have migrated across the Mexican border
+*In Africa
+**Introduced into Libya through the importation of infested livestock
+**Sterile males released
+**Eradication occurred in 1991[[Category:Parasites]][[Category:Flies]][[Category:Myiasis_Producing_Flies]]

Difference between revisions of "Chrysomya bezziana"

Revision as of 20:01, 30 March 2010

Screw Worm Myiasis

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