Author, Donkey, Bureaucrats, Administrators
53,803
edits
Changes
Jump to navigation
Jump to search
no edit summary
|}
|}
==''Haemonchus contortus''==
{| cellpadding="10" cellspacing="0" border="1"
{| cellpadding="10" cellspacing="0" border="1"
| Also known as:
| Also known as:
Within the UK, it is found most commonly in the South, where the climate tends to be a little warmer and drier. Some have shown complete resistance to current anthelmintics which is posing a real problem, making sheep and goat farming extremely difficult in some areas of the country.
Within the UK, it is found most commonly in the South, where the climate tends to be a little warmer and drier. Some have shown complete resistance to current anthelmintics which is posing a real problem, making sheep and goat farming extremely difficult in some areas of the country.
===Identification===
The eggs are yellow, and approximately 70–85 μm long by 44 μm wide. The adult female is 18–30 mm and is easily recognized by its distinct “barber pole” coloration. The female has a red and while appearance, the red is due to the fact it is a blood feeder, and the white represents the ovaries coiled around the blood filled intestines.
The male adult worm is considerably smaller than the female, and is around 10–20 mm. It holds a characteristic copulatory bursa, which is an important diagnostic aid.
===Hosts===
===Hosts===
L3 then moults into L4 within 48hrs. The L4 then penetrate the lining of the abomasum using their anterior spicules. L4 are able to draw blood from the host through the buccal capsule, causing severe anaemia in some cases. As adults they are able to move freely along the mucosal surface.
L3 then moults into L4 within 48hrs. The L4 then penetrate the lining of the abomasum using their anterior spicules. L4 are able to draw blood from the host through the buccal capsule, causing severe anaemia in some cases. As adults they are able to move freely along the mucosal surface.
Eggs are subsequently shed onto pasture by the host within 3 weeks of infection, and the life cycle continues.
Eggs are subsequently shed onto pasture by the host within 3 weeks of infection, and the life cycle continues.
==''Haemonchus longistipes''==
==''Haemonchus longistipes''==
|}
|}
===Indentification===
===Identification===
These are relatively small worms, with the males being around 10-20mm, and the females 18-30mm.
These are relatively small worms, with the males being around 10-20mm, and the females 18-30mm.
The male has a dorsal lobe, which are longer than those seen in '''H. contortus''' and barbed spicules, which are shorter.
The male has a dorsal lobe, which are longer than those seen in '''H. contortus''' and barbed spicules, which are shorter.
===Life Cycle===
===Life Cycle===