Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
57 Cards in this Set
- Front
- Back
|
Cattle Louse Order
|
Mallophaga
|
|
|
Cattle Louse Metamorphosis
|
Paurometabolous
|
|
|
Cattle Louse (red lice) Anatomical Features
|
1/16 to 1/8 of an inch long,
yellowish-white with red heads and dark bands across their bodies |
|
|
Cattle Louse (blue lice)
|
Somewhat larger than red lice, bluish-slate color
|
|
|
Cattle Louse Life History
|
hatch from nits fastened to cattle hair, breed continuously,
new generation every 30 days |
|
|
Cattle Louse Damaging Stage
|
Immatures and Adults
|
|
|
Cattle Louse Commodities Attacked
|
All ages of cattle (prefer Angus, Holstein)
|
|
|
Cattle Louse Type of Damage
|
Cattle rub and scratch causing bruising, hair loss
Damage is worst in winter when hair is long |
|
|
Cattle Louse Control Measures
|
Keep cattle in top condition, in clean, well-ventilated barns that are not overcrowded
Insecticide dusts or sprays |
|
|
Hog lice Order
|
Anoplura
|
|
|
Hog Lice Metamorphosis
|
Paurometabolous
|
|
|
Hog Lice Anatomical Features
|
Very large-1/4 inches
Head narrower than thorax slender, piercing-sucking stylets |
|
|
Hog Lice Life History
|
Entire life cycle on hog (25-30 days)
Up to 90 eggs hatch in 12-20 days, nymphs mature in 10-12 days |
|
|
Hog Lice Damaging Stage
|
Immatures and Adults
|
|
|
Hog Lice Commodities Attacked
|
Hogs only, of any age
|
|
|
Hog Lice Type of Damage
|
Itching and discomfort cause hog to scratch and causes thick, cracked, tender, and sore hide
Causes hog to be more susceptible to disease Can cause discounted carcass price |
|
|
Hog Lice Control Measures
|
Isolation of new hogs, treatment of entire herd, floors, walls, equiptment
|
|
|
Cattle grub Order
|
Diptera
|
|
|
Cattle Grub Metamorphosis
|
Holometabolous
|
|
|
Cattle Grub Anatomical Features
|
Black, 1/2 inch long
Hairy flies with strpies and setae on the thorax Larvae are white, 1 inch long with a pair of spiracles |
|
|
Cattle Grub Life History
|
Females attach eggs to hair on legs or belly
Eggs hatch within 4 days Larvae penetrate skin and migrate through the body to the back forming a cyst Grubs drop to ground, pupate, and change into flies Only 1 generation/ year |
|
|
Cattle Grub Damaging Stage
|
Larvae (bots)
|
|
|
Cattle Grub Commodities Attacked
|
Bison, cattle
|
|
|
cattle Grub Type of Damage
|
Lower meat price because of trimming costs,
Hide price reduced because of breathing holes |
|
|
Cattle Grub Control Measures
|
Insecticides that are applied after the grubs have entered the cattle, but before tey reach the esophagus or spinal cord
|
|
|
Facefly Order
|
Diptera
|
|
|
FaceFly Metamorphosis
|
Holometabolous
|
|
|
Facefly Anatomical Features
|
20% larger than house fly, slightly longer, more robust
|
|
|
Facefly Life History
|
Overwinters at adult
Hiberates in high places such as lofts, attics (domestic pest) Mate in spring, congregate in sunny spots Females lay eggs in fresh cow manure Eggs hatch in one day Larvae complete development in 2.5 to 4 days, turning from white to yellow and moving to the soil to enter pupal stage Emerge as adults in 5-7 days Life cycle complete in about 2 weeks Numerous generations per year |
|
|
Facefly Damaging Stage
|
Adult
|
|
|
FaceFly Commodities Attacked
|
Beef and Dairy Cattle
Horses Openfaced Sheep |
|
|
Facefly Type of Damage
|
Disrupt grazing,
Causes weight loss, Lowers milk production, transmits pinkeye, infectious abortion, eyeworm |
|
|
Facefly Control Measures
|
Cattle insecticide ear tags, dust bags, backrubbers
Horses: Daily application as smears, sprays, or dusts |
|
|
Sheep Ked Order
|
Diptera
|
|
|
Sheep Ked Metamorphosis
|
Holometabolous
|
|
|
Sheep Ked Anatomical Features
|
Looks like a tick
Wingless Grayish-brown 1/4 inch long Piercing-suckin mouthparts in adults |
|
|
Sheep Ked Life History
|
Entire life history on host
Female produces about 15 full grown maggots Puparium forms after a few more hours and keds emerge in 2-5 weeks |
|
|
Sheep Ked Damaging Stage
|
Adult
|
|
|
Sheep Ked Commodities damaged
|
Sheep, some goats
|
|
|
Sheep Ked Type of Damage
|
Irritation causes rubbing, biting, scratching and reduces amount and quantity of wool
Can also cause anemic condition, making the animal more susceptible to disease |
|
|
Sheep Ked Control Measures
|
Insecticide in the spring after sheep are sheared
Can be done on a warm, sunny day in winter of fall in infestation is sever Hand dusting is appropriate for a few sheep |
|
|
Stable Fly Order
|
Diptera
|
|
|
Stable Fly Metamorphosis
|
Holometabolous
|
|
|
Stable Fly Anatomical Features
|
1/4 inch long
Grayish Resembles houseflys, 7 dark spongs in a figure 8 pattern on the abdomen piercing-sucking mouthparts which extend from the head |
|
|
Stable Fly Life History
|
Northern-Overwinter as immatures
Southern-All stages found in winter Female must have blood meal before eggs can mature Life cycle: 20-60 days Larvae develop in wet straw, manure, etc |
|
|
Stable Fly Damaging Stage
|
Adult
|
|
|
Stable Fly Commodities Attacked
|
Variety of cattle, hogs, dogs, rabbits, sheep, goats, humans
|
|
|
Stable Flys Type of Damage
|
Bites legs of animals
Causes animals to stomp feet Causes blood and weight loss |
|
|
Stable Fly Control Measures
|
Sanitation, elimination of breeding sites
Wet or dry forms of insecticides Larvacides applied to manure or as feed additive |
|
|
Poultry Lice Order
|
Mallophaga
|
|
|
Poultry Lice Metabolism
|
Paurometabolous
|
|
|
Poultry Lice Anatomical Features
|
Wingless, 6-legged,
flattened body and broadly rounded head, head wider than thorax |
|
|
Poultry Lice Life History
|
Eggs laid on hosts feathers, entire life cycle spent on host
most generations completed in 2-7 weeks |
|
|
Poultry Lice Damaging Stage
|
Immatures, Adults
|
|
|
Poultry Lice Commodities Attacked
|
Fowl: Chickens, Ducks, and Turkeys
|
|
|
Poultry Lice Type of damage
|
Chew on dry skin, feathers, scabs, may ingest blood from irritated skin
|
|
|
Poultry Lice Control Measures
|
Sanitation, Cleanliness, Insecticides
|
