Changes

Jump to navigation Jump to search
987 bytes removed ,  14:51, 29 March 2010
no edit summary
Line 2: Line 2:     
*The two genera of veterinary importance are ''Hippobosca'' and ''Melophagus''
 
*The two genera of veterinary importance are ''Hippobosca'' and ''Melophagus''
 +
 +
    
<big>
 
<big>
 
'''[[Hippobosca spp.|''Hippobosca spp.'']]
 
'''[[Hippobosca spp.|''Hippobosca spp.'']]
    +
'''[[Melophagus spp.|''Melophagus spp.'']]
    
</big>
 
</big>
===''Melophagus'' spp.===
  −
  −
*Also known as sheep ked
  −
  −
*Found worldwide
  −
  −
*Bites sheep and goats
  −
**A separate species is found on deer
  −
  −
  −
'''Recognition'''
  −
*4-6mm long
  −
  −
*Hairy
  −
  −
*Forward pointing proboscis
  −
  −
*Short head
  −
  −
*Reddish brown colouring
  −
  −
*Dorso-ventrally flattened
  −
  −
*'Tick-like' in appearance
  −
  −
*'''Wingless'''
  −
  −
*Strong legs and claws
  −
  −
  −
'''Life cycle'''
  −
*Whole life cycle spent '''on''' the host
  −
**Adults may survive for 1 week off the host
  −
  −
*Single larvae laid on fleece which pupate
  −
  −
*Adult keds emerge a '''few weeks to a few months''' after pupating depending on environmental temperature
  −
  −
  −
'''Pathogenesis'''
  −
*Most numerous in '''autumn and winter'''
  −
  −
*Located in the superficial layers of the fleece
  −
**This aids transmission
  −
  −
*Long wooled breeds are most susceptible to infection
  −
  −
*Cause anaemia
  −
  −
*Wool damage
  −
**Irritation and self-inflicted damage
  −
**Staining by ked faeces
  −
  −
*Intermediate host for non-pathogenic ''Trypanosoma melophagium'' in sheep
  −
     −
'''Control'''
  −
*Sheep dipping and spraying
     −
*Shearing to decrease numbers
      
[[Category:Parasites]][[Category:Flies]][[Category:Biting_Flies]]
 
[[Category:Parasites]][[Category:Flies]][[Category:Biting_Flies]]
Author, Donkey, Bureaucrats, Administrators
53,803

edits

Navigation menu