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{| cellpadding="10" cellspacing="0" border="1"
{| cellpadding="10" cellspacing="0" border="1"
| Predilection site
| Also known as:
| Small intestine
| '''Thread-necked worm
|-
|-
|}
|}
==Introduction==
==Introduction==
''N. battus'' is most prominent within the UK, but is also present to a lesser extend in Norway, Sweden, the Netherlands, and Canada. In heavy infections this parasite can be severe, and if left untreated can lead to the death of the carrying host. It is also capable of causing parasitic [[Enteritis, Parasitic|catarrhal enteritis]].
It is a nematode , and is part of the [[:Category:Trichostrongyloidea|''Trichostrongyloidea'']] superfamily.
{| cellpadding="10" cellspacing="0" border="1"
{| cellpadding="10" cellspacing="0" border="1"
| Also known as:
| Predilection site
| '''Thread-necked worm
| Small intestine
|-
|-
|}
|}
==Hosts==
==Hosts==
==Life Cycle==
==Life Cycle==
The lifecycle of ''N. battus'' is different from to the common ''Trichostrongyle'' lifecycle.
The lifecycle of ''N. battus'' is different from the common ''Trichostrongyle'' lifecycle.
L1-L3 occurs '''within''' the egg. The larvae takes several months to develop. Hatching is stimulated by a cold period followed by a night/day temperature of around 10 degrees. The L3 are highly susceptible to changes in climate, so must be ingested soon after moulting to ensure the success of infection.
L1-L3 occurs '''within''' the egg. The larvae takes several months to develop. Hatching is stimulated by a cold period followed by a night/day temperature of around 10 degrees. The L3 are highly susceptible to changes in climate, so must be ingested soon after moulting to ensure the success of infection.