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30 Cards in this Set
- Front
- Back
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Features of arachnids? |
4 pairs of legs have ticks and mites no antennae or wings body is 2 parts (gnathosoma) (idiosoma)
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Features of ticks? |
need blood meal (obligate parasites) (need host at some point) most life cycle spent off host variable host specificity |
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What is a chelicerae? |
cutting part of mouth |
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What is a hypostome? |
needle that does the sucking (has backwards spines so it stays in) |
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legs on larva? nymph? adult? |
3 pairs 4 pairs 4 pairs |
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how many hosts does a 3 host tick have (stupid question) |
Usually they get on hosts at major points in their lives |
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How serious is a tick bite? |
serious can take 5 ml blood scar and damages hide can paralyze host. may reduce growth of host |
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Two kinds of ticks? Soft and hard? (names and features) |
Argasidae (soft) no scutum puthparts underneath (rapid feeders) Ixodidae (hard) scutum present mouth parts anterior (slower feeders) |
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Argasidae ticks? (3) |
Argas persicus (fowl tick) Ornithodoros moubata (tampan ticks) otobius megnini (spinose ear tick) |
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The fowl tick? Name and features? |
Argus persicus reddish tick (head underneath) distinct pattern margining body |
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Life cycle of Argus persicus? |
egg laid in cracks. hatch in 3 weeks (larvae feed 5-10 days) can survive 3 months without food. 4 nymph stages (nymp feeds 1-2 hours) adults suvive 5 years without food. (adults only need a few minutes to feed0 |
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Argus persicus effect on host? |
anaemia, irritation, reduce egg production, paralysis caused by larvae, (tick fever).
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Treatment of Argus Persicus? |
OP spray Burn it down |
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What are features of Ixodes ticks? |
long palps, anal groove IN FRONT of anus
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How can you tell if it's a paralysis tick? |
smiley face = isn't sad face = is paralysis (this is anal groove) |
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Story of Ixodes ticks? How many species in australia |
Got from marsupials onto dogs. 22 species in australia |
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What is a common paralysis tick that lives on bandicoots (commonly)? Life cycle? |
Ixodes holocylus 3 host tick life cycle takes 18 montsh larvae and adults in spring. nymphs in autumn |
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Ixodes holocylus effect on host? |
all stages cause irritation and paralysis.1 female tick can kill a dog. 4 female ticks kill calf. Can affect human.
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How long to females engorge? How long for signs? |
up to 21 days 5 days are signs. (ascending motor paralysis
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treatment for Ixodes holocyclus? |
remove acaricidal wash hyperimmune serum paralysis |
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What is the most important cattle tick? and features? |
Boophilus microplus short palps with ridges pale legs anal groove behind anus (hard to see engorging female has "waist" |
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where is Boophilus microplus? |
in northern australia. Can also get on dogs, sheep, horses, pigs |
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Life cycle of Boophilus microplus? |
1 host tick life cycle 22 days eggs hatch - nymphs climb grass. these stay on cow for 18-37 days most drop off in early morning on day 22. |
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How much blood does Boophilus microplus take every day? |
5 ml |
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Effect on host of Boophilus microplus? |
irritation. damage to hides (lose 25% value) anaemia anorexia (reduced appetite) reduced production (milk and growth) transmit protazoans (Babesia, Anaplasma, Theileria) |
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What temp does Boophulus microplus like? |
cold and wet |
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How long to spell a paddock infected with Boophulus microplus? |
50% dead by 2 weeks in summer. 10% left by 4 weeks. In cool weather can be up to 11 weeks. |
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What cattle is resistant to Boophulus microplus? |
Zebu cattle. |
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What is the treatment plan with Boophulus microplus? |
6 dips at 21 day intervals. or 4 pour ons at 35 day intervals. For zebu cattle, 2 dips or 1 pour on. |
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Vaccine against Boophulus microplus? |
Causes blood to attack ticks insides. It's guts break down and it dies |
