Nematodirus life-cycle - SCOPS
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www.scops.org.uk Nematodirus life-cycle Host stage 14 days L4 worms mature and develop into adults Adults lay eggs Eggs in dung 1st stage larvae develop in the eggs 2nd stage larvae develop in the eggs 3rd stage L3 larvae are infective. They migrate into the herbage and wait to be eaten by the sheep Free-living stages (May take eight to nine months) Development slower and usually too cold before L3s are ready so they sit dormant until following spring
Transcript of Nematodirus life-cycle - SCOPS
www.scops.org.uk
Nematodirus life-cycle
Host stage14 days
L4 worms mature and
develop into adultsAdults lay eggs
Eggs in dung
1st stage larvae develop in the eggs
2nd stage larvae develop in the eggs
3rd stage L3 larvae are infective. They migrate into
the herbage and wait to be eaten by the sheep
Free-living stages(May take eight to nine months)Development slower and usually
too cold before L3s are readyso they sit dormant until
following spring