types of defences insects used

8/22/2019 Types of Defences Insects used

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DEFENCESIN

ANIMALS


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PREDATION

DEFENCES INANIMALS


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MORPHOLOGICAL DEFENCES

BEHAVIORAL DEFENCES

CHEMICAL DEFENCES


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MORPHOLOGICALDEFENCES


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CAMOUFLAGE


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Stripes and spots.Helps break up ananimal's outline.

For example: Zebra-

black-white help toblend in tall grass at

night.

DISRUPTIVE

OLOURATION


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An animal blendsbest into its

environment when

it is a solid color.The white fur ofthe polar bear is

perfect for anarctic environment

SOLID COLOUR


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Have different colors on their backs and stomachs.Example : Red squirrel

-reddish-brown fur on top makes it harder for predators to

see when it is on the ground. When it is perched on a treebranch.-white fur on its belly helps it to blend into the lighter sky

above when it is perched on tree.

OUNTER SHADING


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The Model - the speciesor object that is copied.

The Mimic - looks and

acts like another speciesor object.

Batesian mimicry-harmless species mimics

a toxic or dangerousspecies.

Example: King snakemimic coral snake

MIMICRY


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Mullerian mimicry- two equally toxic

species mimic each other.Example: Monarch and Viceroy

butterfly


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Walking stick look much like a twig

-

Katydid looks like a leaf

Praying mantis looklike a twig and leaf.

Cryptic colouration- look so much likeanother object that they almost

disappear.


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Eyespots- butterflies and moths

have large eyespots. Theseeyespots trick birds into thinking

the butterfly or moth is much

larger than it really is.


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BEHAVIORALDEFENCES


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Defensive

behaviorAnimals remain immobile when firstthreatened. Their first reaction is tostand and assess the situation. If

frightened their natural instinct is toescape.


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Anti-predator behaviour

Exploratory behaviour

HidingPlay

Grooming

Escape (Flight)

Stereotype

Types of behavior


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TAKE ONDIFFERENT

BODYTYPES

FROMHARD TO

LIQUID

SEA CUCUMBER


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PLAYING

DEADANDSECRETE

TOXICFOAM

OPOSSUM


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BREAK THEIROWN BONES

AND FORM

SHARPCLAWS

HAIRY FROG


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BLOW UPHEMSELVES(EXPLOSIVE

BACKPACS)

TERMITES


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CHEMICALDEFENCES


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Animals which synthesizetheir own toxin are able to

convert chemical compoundsin their body to a poison.

Many animals accumulatetoxin from their food ratherthan synthesizing it from

scratch.


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Bombardierbeetle shooting

boiling stream ofpoison towards

predator.

BOMBARDIER BEETLE


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EXPLOIDING ALLOVERTHEMSELVES

WHEN THEENEMIES ARE TOO

CLOSE

MALAYSIAN ANT


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COVERTHEMSELVES

IN THEIROWN POOP

POTATO BEETLEBABIES


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Monarch butterfliesaccumulate toxins fromthe plants they inhabit

since young. Toxins thatmakes them not that

tasty Their bright coloration

allows birds to

remember and avoid

them.

MONARCH BUTTERFLIES


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Bites can causeextreme painand swelling

Sidewinder rattlesnake


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q RETRIEVED FROMhttp://biology.about.com/od/ecology/a/defensemechan.htm

RETRIEVED FROMhttp://www.cracked.com/article_19184_the-8-most-disgusting-animal-defenses.html

Retrieved fromhttp://mentalfloss.com/article/12258/7-absolutely-insane-animal-defense-mechanisms

Retrieved fromhttp://webecoist.momtastic.com/2008/11/04/9-of-the-most-bizarre-animal-defense-mechanisms

retrieved fromhttp://scienceray.com/biology/zoology/seven-defense-mechanisms-of-animals

REFERENCES
http://biology.about.com/od/ecology/a/defensemechan.htmhttp://www.cracked.com/article_19184_the-8-most-disgusting-animal-defenses.htmlhttp://mentalfloss.com/article/12258/7-absolutely-insane-animal-defense-mechanismshttp://webecoist.momtastic.com/2008/11/04/9-of-the-most-bizarre-animal-defense-mechanismshttp://scienceray.com/biology/zoology/seven-defense-mechanisms-of-animalshttp://scienceray.com/biology/zoology/seven-defense-mechanisms-of-animalshttp://scienceray.com/biology/zoology/seven-defense-mechanisms-of-animalshttp://webecoist.momtastic.com/2008/11/04/9-of-the-most-bizarre-animal-defense-mechanismshttp://webecoist.momtastic.com/2008/11/04/9-of-the-most-bizarre-animal-defense-mechanismshttp://mentalfloss.com/article/12258/7-absolutely-insane-animal-defense-mechanismshttp://mentalfloss.com/article/12258/7-absolutely-insane-animal-defense-mechanismshttp://www.cracked.com/article_19184_the-8-most-disgusting-animal-defenses.htmlhttp://www.cracked.com/article_19184_the-8-most-disgusting-animal-defenses.htmlhttp://biology.about.com/od/ecology/a/defensemechan.htmhttp://biology.about.com/od/ecology/a/defensemechan.htm

types of defences insects used

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