With apologies to Mr Hancock and the Blood Donor sketch!
Living in rural areas brings rural problems... this particular one might make readers scratch a bit.
Jerry turned up after almost a week on the prowl elsewhere... he had also picked up a hitch hiker... in fact several, it turned out later!
He wouldn't let us get near his tail when stroking him... as he had been away for so long, and him being a 'full' tom and all... I at first thought he was a bit sore round the nethers... then, whilst he was yet again grooming himself down there, I saw....
He had a female Tick
] La Tique du Mouton
, fully engorged, at the base of the tail...on the underside... NO
wonder he was tender behind. For personal reasons there is no picture of the Tick in situ... not for Jerry's modesty... just for our personal safety...
Removing the offending beast was no easy task.... it eventually entailed [aarrrg!
] leather gauntlets and the use of the "wrong"* trousers as a lap protector.... me holding Jerry very, very, very firmly, whilst Pauline used the wonderful Tick Remover...
|The Tick1 Tick Remover from Clas Ohlson... Sweden's answer to DIY!!|
Gently pulling, she removed the tick, head and all... with this implement there is no chance of bursting the tick, or squeezing blood back into the wound.
Jerry did NOT like that at all... fought all the way! And then sulked... as only cats can!!
|This is the tick trapped in the remover...|
The upper picture shows that the mouthparts have come away cleanly!
The idea is to get the head and mouthparts in the very narrow slot...
fat chance with a struggling cat!!
But a few cat treats soon brought him round and the comfort 'petting' allowed a fuller inspection... which revealed a lot more, in different stages of development, so I can, therefore, reveal the three stage development of the Sheep Tick. Get ready to itch... but please read.... as in Susan's blog entry on the processionary caterpillars
, these ticks are dangerous. Also please
read Susan's comment [it is the first one]
on this blog entry.... There is also a very good entry on Lyme Disease on Patient.co.uk
is what is known as a hard
tick... this is to difference it from soft bodied ticks... not to do with its attitude! It has three stages after hatching....
|From left: Engorged female, male, engorged 1st instar [nymph]|
The reason they are posing so nicely is that they've been for a swim in a little
Eau de Vie du Mirabelle at around 75% ABV... and are drunk...DEAD drunk!
The female that is shown above lays a huge mass of around a thousand eggs, in long grass, and then dies.
Out of the egg comes the nymph [or first instar]... which as you can see from this picture is very, very small. The newly hatched young crawl up a grass stem and using a sense organ called Haller's organ, situated on their front legs, 'sniff' out a suitable host. At this first stage it can be any mammal passing that has some blood in it! Size at this point is not important... it needs food, fast, to survive and allow it to develop to a second instar nymph. Once fed [engorged]
it lets go and falls off the host... back into the environment... where it moults... and becomes dormant for the winter.
|Unfed and dead 1st instar and engorged 2nd year tick|
Stage two, the second year, is much the same. It awakes from dormancy and again crawls up a stem... and waits... if it gets too dry, it crawls down again to rehydrate and then tries again.The race is on to find a host, feed and moult so that it can complete stage two... much like a computer game really! If it doesn't get a feed before it has used up its energy resources.... it DIES! But it only takes one adult female to lay thousands more...
Once fed and moulted it hibernates again...
|Female from the front showing mouthparts|
|Mouthparts are showing clearly on this shot...|
taken just after release from the Remover.
The mature adults come out of dormancy in the spring and mate... this can take place on or off a host... once mated the female goes in search of that final meal so that she can complete the life cycle.
|The head and mouthparts in close-up...|
Outside are the two Palps [used to help hold the head in place]
Between them is the Hypostome [the syringe]
Prevention is the best cure....
Effective self protective measures include:
- Use of repellent on skin (DEET) and/or permitherin on clothing
- Avoiding contact with overhanging vegetation where ticks are likely to be questing
- Wearing light coloured clothing to easily see ticks and brush them off before they attach to skin
- Tuck trousers into socks or shoes to minimise ticks under clothing
- Regular checks for ticks on clothing
- Full tick examination once leaving tick areas- prompt removal (less than 24 hours) greatly reduces the risk of transmission
- Regular use of tick treatment on companion animals... we use Frontline [available from Point Vert / Gamm Vert amongst others]
- Excluding sheep or deer from garden areas
- Ensuring garden borders and lawns are keep short
- Consider installing a 'buffer zone' of stones or chipping around rural gardens bordering woodland or grassland
Fuller details are:
/ European Wood tick
- Ixodes ricinus
The life cycle of Ixodid ticks involves four
stages: the egg stage and three parasitic stages, larva, nymph and adult.
Ixodidae... hard ticks.
Europe and north Africa (from Iceland to Russia and down to the Atlas Mountains/Iran)
Woodlands, heath lands, forests and bushes
From March to June and August to November
Three host tick - egg to adult takes 1-6 years (usually 2 or 3 years)
On or off host before females can engorge
Females feed for 6-13 days before dropping on the ground, laying thousands of eggs and dying
Female adults can grow 200 times their initial size when engorged. Feeding causes tick paralysis
Adults target medium to large mammals: sheep, cattle, dogs, deer, men, horses
Nymph and Larva target small mammals (90% insectivores), rodents, rabbits, birds, reptiles and bats
Seek host using Haller's organ
- Dogs: Borrelia burgdorferi, B. afzeli, B. garnii
- Cattle: Babesia divergens (redwater), B. bovis, B. ovis, Borrelia burgdorferi (Lyme disease),
- Staphylococcus aureus (sheep tick pyremia), Ehrlichia phagocytophila (cattle tick borne fever),
- Coxiella burnetii (Q fever), Rickettsia conorii (Boutonneuse fever), Anaplasma marginale
- Horses: Borrelia burgdorferi (Lyme disease), Louping ill, Ehrlichia equi
- Man: Borrelia burgdorferi (Lyme disease), Louping ill, Coxiella burnetii (Q fever),Tick borne encephalitis
Female: 3-3.6 mm
Female engorged: 11 mm
Male: 2.4-2.8 mm
Unfed Nymph: 1.3-1.5 mm
The "wrong" trousers are my chainsaw leg protectors.. they are big, clunky, mighty uncomfortable... but very necessary!