Parasites

Question 1

Host

Answer 1

animal which serves as residence for parasite

Question 2

Larvae

Answer 2

first immature stage emerging from the egg

Question 3

Pupae

Answer 3

stage following the larval stage

Question 4

Nymph

Answer 4

any immature stage of a parasite (larvae or pupae)

Question 5

External (ectoparasite)

Answer 5

live outside digestive, circulatory, reproductive and internal organs as adults

Question 6

External (endoparasite)

Answer 6

live within digestive, circulatory, reproductive and internal organs as adults

Question 7

What damage do Ectoparasite’s inflict

Answer 7

1. damage and irritate skin
2. cause restlessness or nervousness
3. transmit infectious organisms
4. draw blood

Question 8

What damage do Endoparasite’s inflict

Answer 8

1. absorb food intended for host
2. draw blood and lymph fluid
3. damage tissue, causing internal bleeding
4. create obstructions in intestines and circulatory system
5. produce toxins

Question 9

There are two types of parasites, so what are the two ways to control them?

Answer 9

Externally: including spraying, dusting, dipping, pour-ons, injections, sanitation and pasture rotation

Internally: putting chemicals into the body (worming)

Question 10

Two families of Tick

Answer 10

Argasidae and Ixodidae

Question 11

Three most important Ticks

Answer 11

1. Lone Star Tick
2. Gulf Coast Tick
3. Spinose Ear Tick

Question 12

Who do ticks use as their hosts?

Answer 12

All

Question 13

Life cycle of a tick

Answer 13

1. adults lay eggs that hatch in 10-12 days
2. hatched eggs find host, attach and feed on blood
3. stay attached until adult life then detach and lay eggs

Question 14

How long do tick’s live for?

Answer 14

from a few days to several months

Question 15

Damage caused by ticks

Answer 15

1. anemia
2. weight loss
3. death

Question 16

Symptoms caused by ticks

Answer 16

1. unthrifty
2. rubbing on objects
3. unnatural head and ear carriage

Question 17

How to control ticks

Answer 17

1. pasture rotation
2. cold winters
3. chemicals

Question 18

Life cycle of lice

Answer 18

1. adults lay and glue eggs to hair follicles
2. hatching in 1-2 weeks, becoming adults in 2-4 weeks
3. live entire life on host

Question 19

What do lice feed off of?

Answer 19

blood and skin

Question 20

Who do lice choose for a host?

Answer 20

all species
-only one affects swine

Question 21

Damage caused by lice

Answer 21

1. irritation
2. anemia
3. unthrifty
4. weight loss

Question 22

Symptoms caused by Lice

Answer 22

1. rough hair coat
2. rubbing
3. scratching

Question 23

How to control lice

Answer 23

chemical control with sprays, dips, dust, pour-ons and injections

Question 24

What do mites include?

Answer 24

1. many species of mites
2. hosts are all species
3. causing skin problems like: scabies, scabs, mange or barn itch

Question 25

Life cycle of mites

Answer 25

1. lay eggs on skin of animal 2. eggs hatch in 4 days 3. feed on skin 4. reaching adult stage in about 12 days 5. live entire life on host

Question 26

Damage caused by mites

Answer 26

1. hair falls out 2. skin becomes rough and crusty

Question 27

Symptoms caused by mites

Answer 27

1. spots of rough, crusty skin with no hair 2. scratching and itching

Question 28

How to control mites

Answer 28

1. chemicals are used 2. some are serious, might require quarantine of animal

Question 29

Hookworm cycle

Answer 29

1. larvae is passed to host (directly or indirectly) 2. larvae migrate to lungs then trachea 3. coughed up and swallowed, ending up in small intestine 4. mature and begin to feed, shedding eggs in feces

Question 30

Stomach worm host

Answer 30

all animals

Question 31

Life cycle of stomach worms

Answer 31

1. adults live as blood sucking parasites attached to stomach wall 2. eggs pass out with feces then hatch in 15-20 days 3. larvae is eaten and travel to stomach where they mature into adults

Question 32

Damage caused by stomach worms

Answer 32

1. holes in stomach lining 2. poor digestion

Question 33

Symptoms caused by stomach worms

Answer 33

1. anemia (paleness of gums) 2. weight loss 3. dull hair coat 4. unthrifty

Question 34

How to control stomach worms

Answer 34

1. sanitation 2. pasture rotation 3. chemical wormer

Question 35

What animals do Strongyles mainly attack?

Answer 35

young animals host- all species

Question 36

Do they build up immunity as they get older?

Answer 36

yes

Question 37

What is another name for Strongyles?

Answer 37

blood worms

Question 38

Life cycle of strongyles

Answer 38

1. live in small intestine, blood sucking 2. eggs are laid then pass to feces 3. hatch in 5-20 days 4. larvae are eaten then travel to small intestine 5. burrow holes into arteries and internal organs

Question 39

Damage caused by strongyles

Answer 39

1. most detrimental 2. reduced digestion 3. blocking arteries 4. organ damage 5. colic in horses

Question 40

Symptoms caused by strongyles

Answer 40

1. anemia 2. weight loss 3. rough hair coats 4. scouring

Question 41

How to control strongyles

Answer 41

1. sanitation 2. pasture rotation 3. chemical wormer

Question 42

What animals do whipworms infect?

Answer 42

1. swine 2. sheep 3. goat

Question 43

Life cycle of whipworms

Answer 43

1. adults live in caecum where they lay eggs to pass through feces 2. eggs are eaten and hatch 3. larvae return to caecum to become adults and repeat

Question 44

Damage caused by whipworm

Answer 44

1. serious damage to intestinal part of digestive tract

Question 45

Symptoms caused by whipworm

Answer 45

1. unthrifty 2. diarrhea 3. bloody diarrhea 4. weight loss 5. death

Question 46

How to control whipworm

Answer 46

1. use very strong chemical wormer 2. such as atgard or tramisol

Question 47

Who do broad tapeworms affect?

Answer 47

1. all species (major host) 2. mites are intermediate hosts

Question 48

Life cycle of tapeworms

Answer 48

1. adults live in small intestine feed on food not host 2. may grow lengths of 10-12 feet 3. segments containing eggs break off and passed with feces 4. eggs eaten by mites, developing until eaten by major host 5. hatch in small intestine to mature

Question 49

Damage caused by tapeworms

Answer 49

1. no physical damage 2. compete for food

Question 50

Symptoms caused by tapeworms

Answer 50

1. weight loss 2. diarrhea 3. unthrifty

Question 51

How to control tapeworms

Answer 51

1. chemical control 2. must be edible to tapeworm

Question 52

Parasites cause what and for who?

Answer 52

cause numerous health problems for livestock and humans

Question 53

There are many what to prevent parasites?

Answer 53

various chemicals and natural ways

Question 54

Why are precautions important?

Answer 54

necessary precaution are imperative in order to prevent infection