Changes

Jump to navigation Jump to search
Line 1: Line 1: −
{{unfinished}}
+
{{OpenPagesTop}}
 +
{{Taxobox
 +
|name              =''Ancylostoma caninum
 +
|kingdom            =Animalia
 +
|phylum            =[[Nematodes|Nematoda]]
 +
|class              =Secernentea
 +
|sub-class          =
 +
|order              =Strongylida
 +
|super-family      =[[Ancylostomatoidea]]
 +
|family            =Ancylostomatidae
 +
|sub-family        =
 +
|genus              =Ancylostoma
 +
|species            =''A. caninum''
 +
}}
   −
==Scientific Classification==
+
==Description==
{| cellpadding="10" cellspacing="0" border="1"
+
[[File:Hookworms.jpg|thumb|Image of ''Ancylostoma caninum''<br><small>Copyright Joel Mills 2006 Wikimedia Commons]]</small>
| Kingdom
+
''Ancylostoma caninum'' is a hookworm that belongs to the superfamily [[:Category:Ancylostomatoidea|Ancylostomatoidea]].  This superfamily contains exotic hookworms that infect both man and animals.  ''A. caninum'' is rarely found in the UK but it is a major pathogen of dogs in many warmer and tropical regions of the world and it may be encountered in dogs that have travelled under the Pet Travel Scheme.  The [[Ancylostomatoidea Life-Cycle|life-cycle of ''Ancylostoma caninum'']] is detailed elsewhere but it should be noted that L3 larvae of this species mainly enter by the transcutaneous route so that intestinal disease and blood loss are mainly seen in younger animals.
| Animalia
  −
|-
  −
| Phylum
  −
| Nematoda
  −
|-
  −
| Class
  −
| Secernentea
  −
|-
  −
| Order
  −
| Strongylida
  −
|-
  −
| Superfamily
  −
| Ancylostomatoidea
  −
|-
  −
| Family
  −
| Ancylostomatidae
  −
|-
  −
| Genus
  −
| Ancylostoma
  −
|-
  −
| Species
  −
| '''A. caninum'''
  −
|-
  −
|}
      +
==Identification==
 +
[[File:Hookworm egg 1.jpg|thumb|Image of an egg of ''Ancylostoma caninum''<br><small>Copyright Joel Mills 2006 Wikimedia Commons]]</small>
 +
''A. caninum'' may be recognised on examination under a microscope by its large buccal cavity which contain three pairs of teeth along its anterior and ventral edges.  Two smaller teeth are also present at the base of the cavity.
   −
==Description==
+
Like almost all hookworm eggs, those of ''A. caninum'' are oval in shape and around 50 um in diameter.  The shell membrane is thin and transparent and, by the time the egg is passed in the faeces, it contains a segmented ovum at the 4 or 8 cell stageIn a tropical climate, the egg will hatch within 24 hours and only L1 larvae will then be detectable.
''Ancylostoma caninum'' is rarely found in the UK but it is a major pathogen of dogs in many warmer and tropical regions of the world and it may be encountered in dogs that have travelled under the Pet Travel Scheme.  ''A. caninum'' may be recognised on examination under a microscope by its large buccal cavity which contain three pairs of teeth along its anterior and ventral edges.  Two smaller teeth are also present at the base of the cavityThe life-cycle of ''A. caninum'' is detailed [[Ancylostomatoidea Life-Cycle|elsewhere]] but it should be noted that L3 larvae of this species mainly enter by the transcutaneous route so that intestinal disease and blood loss are mainly seen in younger animals.
      
==Pathogenesis==
 
==Pathogenesis==
Line 45: Line 36:     
==Zoonotic Potential==
 
==Zoonotic Potential==
''A. caninum'' is capable of infecting humans, producing a disease called '''cutaneous larva migrans'''. The L3 larvae penetrate the skin and migrate for up to two weeks before they are killed by the development of an immune response. The larvae are acquired in tropical locations where bare skin comes into contact with sand or warm moist soil. The larvae are thought to lack the collagenolytic enzymes that would allow them to penetrate into the dermis and complete their life-cycle and instead, they continue to migrate in the superficial layers of the skin at a rate of up to 2 cm per day.  Small serpiginous (snake-like) tunnels may be seen to radiate from the initial point of penetration.  The disease is usually treated with thiabendazole.  This disease is one of several referred to as cutaneous larva migrans, with other causes including migration of avian schistosome, ''Strongyloides westeri'' and ''papillosus'' and ''Pelodera strongyloides'' larvae.  
+
Hookworms are able to cause a disease called [[Cutaneous Larva Migrans]] in humans.
 +
 
 +
{{Learning
 +
|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=title%3A%28%22Ancylostoma+caninum%22%29&occuring1=freetext&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&publishedstart=2000&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all&x=48&y=10 ''Ancylostoma caninum'' publications since 2000]
 +
|Vetstream = [https://www.vetstream.com/canis/search?s=nematode Nematoda]
 +
}}
 +
 
 +
{{review}}
 +
 
 +
{{OpenPages}}
    +
[[Category:Ancylostomatoidea|C]][[Category:Dog_Nematodes]]
   −
[[Category:Ancylostomatoidea]][[Category:Dog_Nematodes]]
+
[[Category:Expert_Review]]
[[Category:To_Do_-_James]]
 
147

edits

Navigation menu