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Flashcards in Other Deck (47):
1

Kochs Postulates

1: pathogen isolated from dead animal with disease
2: grow pathogen in pure culture and ID as same
3: re-infect and uninfected individual and see disease
4: Re-isolate from the 2nd organism and ID to regrow in pure culture

2

vector

organism (invertebrate arthropod) that transmits a pathogen from reservoir to host

3

Sylvanic

the cycle in nature of the pathogen (vector-reservoir)

4

reservoir

long term host of pathogen, usually subclinical

5

fomite

an inanimate object that transmits an infectious disease

6

clinical disease

visible or detectable symptoms

7

sub clinical

no visible or detectible symptoms but will test positive for pathogen

8

incubation period

time between pathogen exposure and onset of symptoms

9

pandemic

world-wide outbreak

10

epidemic

outbreak in small area

11

acute

rapid onset, more severe

12

chronic

slowly developing, less severe

13

subacute

symptoms between acute and chronic

14

latent

disease with a period of no symptoms when causative agent is inactive

15

convalescence

healing time

16

Mosquitos: Order & Family

Diptera/ Culicidae

17

Holometabolous

entire metamorphosis with unique form for each life cycle (mosquitos)

18

Mosquito Life Cycle

eggs-larva-pupa-adult

19

Anopheles eggs

equipped with float, laid singly

20

Aedes Eggs

laid individually, sticky substance to stick above flood line, hatching stimulated by water level- can survive winter

21

Culex eggs

laid on rafts in straight up position, cap where larvae come out is oriented down towards water

22

Gonotrophic Cycle

when mosquitos go from egg to completing a round of reproduction and then nonproductive again

23

Mosquito Larvae

obligate aquatic, 4-14 days to become pupae, obligate air breathing (siphon), filter feeders

24

Mosquito Pupa

Non-feeding, short stage, have air trumpets on head, transform to adult inside of pupa

25

Mosquito Adult

can not touch water, crack out of pupa

26

Male vs. Female Mosquitos

Males: fluffy antennae, males feed on nectar

27

Johnston's Organ

on head to detect blood, hearing, smell

28

Female Mosquito Bite

bites, secretes saliva as anticoagulant, saliva carries pathogen if present

29

Tick Order/Family

Ixodida/ ixodidae

30

Tick Scutum

Behind back
male: covers whole back
female: covers less than half

31

hematophagous

no complete metamorphosis (ticks)

32

Haller's Organ

Ticks: temperature, CO2, moisture

33

Tick Life Cycle

egg-larvae-nymph-adult

34

Ixodes scapularis

black-legged tick

35

Dermacentor variablis

american dog tick

36

Amblyomma americanum

lone star tick

37

Tick Mating

occurs on host, female cemented in while feeding and can't get away

38

Survey

identification of breeding sites and identification of species

39

Surveillance

monitoring seasonal appearance/abundance

40

Chemical Control

-adulticides(fogs, misting, residual sprays)
-larvacides (oils, films, altosid-keep in larval state)
-repellants
-phermones

41

Physical Control

source reduction/alteration: draining, filling, container removal, water manipulation

42

Biological Control

predators (Toxorhynchites sp., bacteria, mosquito fish)

43

Genetic

sterile male technique

44

LD

lethal dose, lower number=higher toxicity

45

LC

lethal concentation

46

EC

effective concentration- inverse big bar= lower toxicity

47

Flies

horse fly= solid wings
deer fly= patterned wings