Changes

**a '''buccal cavity'''

**a '''buccal cavity'''

**'''teeth''' or '''cutting plates'''

**'''teeth''' or '''cutting plates'''

=== Feeding Habits ===

=== Feeding Habits ===

*Others suck a plug of mucosa into the buccal cavity (plug feeders), leaving a circular ulcer

*Others suck a plug of mucosa into the buccal cavity (plug feeders), leaving a circular ulcer

*Yet others bury their heads deep into the mucosa and suck blood

*Yet others bury their heads deep into the mucosa and suck blood

=== General Life-Cycle ===

=== General Life-Cycle ===

*The basic life-cycle is very simple:

*The basic life-cycle is very simple:

 

**egg → L1 → L2 → L3 → L4 → adult

egg → L1 → L2 → L3 → L4 → adult

 

*With a moult in between each larval stage

*With a moult in between each larval stage

*But there are many variations on this theme

*But there are many variations on this theme

=== Nematode Eggs ===

=== Nematode Eggs ===

These vary greatly in appearance and are very useful for diagnosis as they can often be detected and counted in faecal samples

*These vary greatly in appearance and are very useful for diagnosis as they can often be detected and counted in faecal samples

 

*NOTE: we use the typical '''strongyle''' egg to provide us with a yard-stick for comparing sizes. A "large egg", for example, means larger than a strongyle egg. A typical strongyle egg is approximately '''80µm''' long

NOTE: we use the typical '''strongyle''' egg to provide us with a yard-stick for comparing sizes. A "large egg", for example, means larger than a strongyle egg. A typical strongyle egg is approximately '''80µm''' long

 

== Nematode Superfamilies ==

== Nematode Superfamilies ==

NOTE: the Trichostrongyloidea, Strongyloidea and hookworms are very closely related, and are often collectively known as '''"the strongyles"'''. Typically, they produce almost identical eggs, called '''"typical strongyle eggs"'''.

NOTE: the Trichostrongyloidea, Strongyloidea and hookworms are very closely related, and are often collectively known as '''"the strongyles"'''. Typically, they produce almost identical eggs, called '''"typical strongyle eggs"'''.

'''NON-BURSATE'''

'''NON-BURSATE'''