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Crop Protection > 4.2: Characteristics of insects that make them very successful and how they could affect man > Flashcards

4.2: Characteristics of insects that make them very successful and how they could affect man Flashcards

1
Q

Insect as the dominant terrestrial animal life on earth.

A

-Small size
-Have a protective cuticle (exoskeleton)
- efficient nervous system
- the evolution of flight
- high reproductive rate

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2
Q

Why are insects so dominant and successful?

A
  • structure
  • flight
  • small size
  • reproductive capacity
  • adaptability
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3
Q

How many percent of all animals are insects?

A

80%

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4
Q

How many describe species does insect have?

A

900,000

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5
Q

Insects inhibit virtually all terrestrial habitats exception are:

A

Arctic
Antarctic
And peaks of very high mountains

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6
Q

The following are feed on all types of organic matter.

A

Phytophagous
Predaceous
Parasitic
Saprophagous

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7
Q

Feed on a vast array of food plants?

A

Herbivores

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8
Q

Saprophagous insects?

A

Decomposer

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9
Q

Those that feed on dead or dying plants tissues, dead animals(carrion and excrement (feces) of other animals.

A

Saprophagous insects

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10
Q

Generally larger than their prey,consume many prey and all life stages can be predatory(immature and adult)

A

Predators

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11
Q

Can be transient?

A

Ladybirds

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12
Q

Can be residential

A

Predatory mites

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13
Q

Use different approaches to find and kill prey?

A

Predators

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14
Q

Main predators groups?

A

Spiders
Predatory bugs
Predatory mites
Hoverflies

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15
Q

Is a spider an insect?

A

Not an insect

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16
Q

Is a predatory mites an insect?

A

Not an insect

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17
Q

They are specialized in their choice of host and only female searches for host.

A

Parasite

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18
Q

True or false is different parasitoids species can attack different life stages of host?

A

True

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19
Q

True or false. Immatures almost always kill host.

A

True

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20
Q

Lives and feed in or on a larger host and develop inside the host.

A

Parasite

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21
Q

True or false. Adults remain on or in the host.

A

False. Immatures remain on or in the host.

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22
Q

True or false. Immatures and adults are free living, mobile and may be predaceous.

A

False, Only adults

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23
Q

Example of parasite insect?

A

Trichogramma(underline) wasp

24
Q

What family does Trichogramma (underlined) wasp species belong?

A

Family of Trichogrammatidae

25
Q

Energy source and important in the food chain

A

Prey

26
Q

2 Example of pollinators insects.

A

Bee or honey bee ( Apis mellifera L.)- underlined
Moth or the Yucca moth(Tegeticula yuccasella)- underlined

27
Q

What are the groups of insects?

A

Beneficial (non-pest)
Destructive (pest)

28
Q

How many percent does of all insect species are non-pest?

A

99%

29
Q

Non-pest insect are?

A

1.pollinator
2. decomposer
3. Natural enemies (predators and parasitoids)
4.producers of useful products
5. Specimens for scientific studies
6. Aesthetic value

30
Q

The following are the reason why insects become pest. Except ?
(1) change in cropping pattern which can result
in some plant species being eliminated while
new plants are being introduced;
(2) larger areas of land are being utilized for
planting which displaces other organisms in the
area and can result to these organisms moving
to another area; and
(3) change in human values and preferences.
(4)different parasitoid species
can attack different life
stages of host.

A

No. 4

31
Q

Oviposition and feeding indirect of destructive insects.

A

Direct damage

32
Q

This is the vectors of pathogens.

A

Damage

33
Q

Enumerate the types of feeding damage destructive insects.

A

A. Chewing type
B. Boring type
C. Suking type

34
Q

Types of feeding damage destructive insects that are defoliatiors, impact/extent of damage depends on extent of defoliation and plant growth stage/age.

A

Chewing type

35
Q

Types of feeding damage destructive insects that are feed on fruits, stem and roots.

A

Chewing type

36
Q

Caterpillars, beetles, grasshoppers, and
leafminer are examples of what type of feeding damage destructive insects?

A

Chewing type

37
Q

Type of feeding damage destructive insects that make holes/tunnels
- signs yellowing/wilting and drying of
leaves, pitting and scarring, holes with
frass/feces.

A

Boring type

38
Q

• -Asian corn borer (ACB),
-eggplant fruit and shoot borer (EFSB),-
tomato fruitworm, and termites are the examples of what type of feeding damage destructive insects?

A

Boring type

39
Q

chewing type -=defoliators
suck-up liquid/sap=

A

Sucking type

40
Q

Hemipterans= maphids
True bags=

A

Hemipterans

41
Q

IT excrete honeydew
which favors growth of sooty mold
that alters photosynthesis.

A

Homopterans

42
Q

True or false.Stunted growth, fewer leaves,
wilting, drying and death
and some species have toxins in their
saliva or transmit pathogens are examples of sucking type of destructive insects.

A

True

43
Q

Bunchuy top= virus
Papaya ring spot=

A

Virus

44
Q

Tarophagus proserfina= Gabi planthoppers
Thrips tabcci Lindeman=

A

Trips

45
Q

Virus = Bean mosaic
Stewart’s disease=

A

Bacterium

46
Q

Taro feathery mosaic= Gabi or taro
Corn=

A

Stewart’s disease

47
Q

Rice tungro = rice
Squash=

A

Squash leaf curl

48
Q

ACB=Asian corn borer
Eggplant fruit and shoot borer=

A

EFSB

49
Q

Bunchuy top= Pentalonia nigronervosa Coq.
Crazy bitter gourd (namamarako)=

A

Aphis gossypi/glober

50
Q

Papaya ring spot= Aphis gossypi
Bemisita tabaci =

A

Squash leaf curl

51
Q

Corn flea beetle= cahetochnema puliceria
Therigona orayzae M.=

A

Corn seedling maggots

52
Q

Rice tungro= Nepothettix virescens
Thrips tabacci=

A

Tomato spotted wilt

53
Q

Tarophagus proserfina= taro feathery mosaic
Aphis craccivora Koch=

A

Bean mosaic

54
Q

Pentalonia nigronervosa Coq.=
Nilaparvata luggens(Stal.) = rice grassy stunt

A

Bunchy top

55
Q

Tomato spotted wilt = virus
Crazy bitter gourd (namamarako)=

A

Virus

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