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39 Cards in this Set
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Lice Order, suborder
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Phthireptera
sucking lice= anoplura chewing lice=mallophagia suborders: amblycera, ischnocera |
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lice general characteristics
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whole life on host, obligate paraste found on hair coat/plumage
very host specific wingless, dorso-ventrally flattened, 6 legs incomplete metamorphis |
direct effect of feeding more important than disease transmission
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lice life cycle
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incomplete metamorphis
egg (nit)-->nymph (3 instars)-->adult |
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Chewing/biting lice characteristics
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width of head>thorax
like birds/mammals only transiently on humans feed on hair, feathers, scales, few are blood feeders |
mallophaga
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Trichodectes canis
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Dog Biting Louse
Dogs/Coyotes Rare found on head/neck/tail may take blood meal may be intermediate host of Dipylidium caninum but more likely to be fleas |
mallophaga
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Felicola subrostratus
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Cat Louse
usually on old/sick cats only louse found on cats tightly clings on fur |
mallophaga
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Bovicola (Damalinia)
general characteristics |
each spp. feeds on specifc grazng hosts
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mallophaga
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Bovicola limbatus
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Angora Goat Biting Louse
economic parasite of Angora goats that may damage mohair |
mallophaga
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Bovicola crassipes
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Angora Goat Biting Louse
economic parasite of Angora goats that may damage mohair |
mallophaga
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Bovicola bovis
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Cattle Biting louse
shoulders/dorsal midline of cattle winter parasite, causes rubbing |
mallophaga
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Bovicola equi
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horse chewing louse "motorized dandruff"
only species of biting lice on horses |
mallophaga
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Bovicola ovis
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sheep
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mallophaga
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Heterodoxus spiniger
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Dog Louse
dogs/coyotes south USA/TX but rarely seen in TX dogs feeds on blood and cell debris |
mallophaga
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Gonocotes gallinae
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Fluff Louse
chickens, pheasants, pigeons found in fluff at feather base |
mallophaga
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Family Gonocotes
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chewing lice, all feed on birds
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mallophaga
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Goniodes gigas
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Large Chicken Louse
Guinea fowl/chickens large lice, on body and feathers little clinical importance |
mallophaga
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Chelopistes meleagridis
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Large Turkey louse
common parasite of wild andd domesticated turkeys on neck and breast feathers |
Mallophaga
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Menopon gallinae
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Shaft Louse
on shaft -->diagnostic Chickens, ducks, pigeons |
Mallophaga
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Menacanthus stramineus
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Chicken Body Louse
poultry/ peafowl/pheasants found in areas of body not heavily feathered pathogenic to young birds |
Mallophaga
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Gliricola porcelli
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Guinea pig louse
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Mallophaga
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Gyropus ovalis
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Guinea Pig Louse
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Sucking Lice
General characteristics |
feed on tssue fluid/blood
width of head< body tarsus w/ 1 claw does not feed on birds |
anoplura=suborder
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Haematopinus asini
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Horse sucking Louse
head, neck, back, inner thigh of horse winter parasite, likes undernourished horses unthriftiness, rough hair coat, irritation |
anoplura
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Haematopinus suis
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Hog Louse
large louse, irrtation-->rubbing by swine-->dec. hide value vector of Mycoplasma haemosuis |
anoplura
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Haematopinus eurysternus
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Short-nosed Cattle louse
body louse in temperate areas |
anoplura
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Haematopinus quadripertusus
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cattle tail louse
tropical parasite lives on tail switch and eye lashes |
anoplura
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Linognathus vituli
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long-nosed cattle louse
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anoplura
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linognathus setosus
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dogs and foxes, cause severe anemia b/c reaches high pop. #s
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anoplura
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solenoptes capllatus
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Little Blue Louse
face and body of cattle |
anoplura
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Polyplax spinulosa
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rats
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anoplura
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Polyplax serrata
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Mice
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anoplura
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Pedicnus spp.
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primates
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anoplura
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Pedculus humanus
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Human head louse, human body louse
distinguish via habitat common parasite of humans all over world |
only incidently found on pets. originate from humans
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Pedculus humanus capitus
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eggs attach to hairs
transmitted by direct contact/fomites |
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pedculus humanus humanus
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eggs attach to clothing, can transmt epidemic typhus (Rickettsia prowazekii) and trench fever (bartonella quintana)
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Pthirus pubis
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Crab louse
human pubic louse that attaches to pubc or facial hairs spread via direct contact but bedding and clothing can serve as fomites |
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Fleas
general info |
95% mammals, 5% birds
may act a biological vectors peircing, sucking mouthparts |
mall laterally flattened, wingless
obligat blood feedng, only adults blood feed not host specific but do have host preference |
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id fleas by:
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combs (ctenidia) genal or pronotol
eyes, mesopleural rod, ocular bristle n front or below eye |
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flea life cycle
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complete metamorphis:
e->l->pupa->a egg layed on host, hatches in environment, larva feeds on debris sometimes flea dirt |
larvae pupate w/ a cocoon and adults find hosts by CO2 and vibration
Both sexes take blood meal |
