Animal behaviour
description
Transcript of Animal behaviour
Animal behaviour
Homework 2 – Monday
Learning Intentions•I can give an example of an animal which respond to stimuli and give an explanation for the behaviour.
Success Criteria•I can explain, with the aid of examples, the difference between instinctive behaviour and learned behaviours. •I can describe how an animal responds to a stimulus and give an explanation for the behaviour.
Responding to the Environment
What environmental factors would affect the behaviour of animals?
Light, temperature, humidity
Woodlice
They eat leaves and
so areHerbivores
Choice chambers
We need to design an experiment using a choice chamber that will tell us what conditions the woodlice prefer to live in.
Experiment
When several woodlice are inserted into a choice chamber
they more around randomly. You can place one in the light and one
in a dark environment to investigate what conditions they
prefer.
Experimental Report
TitleAimHypothesisMethod (including diagram)Results table and graphConclusionEvaluation
Time (min) Number of Woodlice
12345678
(i) What is the advantage to the woodlice of gathering on the dark side of the choice chamber?
•Woodlice are less likely to be spotted by predators. •Dark area more likely to be damper to prevent drying out
.
ii) Describe how the choice chamber could be changed to study the response of
woodlice to two different levels of humidity instead of different light intensities.
Remove the black cover. Add silica gel/drying agent to one half of the choice
chamber and wet cotton wool/paper towels to the other side
Animal Stimulus
Response Importance to Animal
Woodlice Moisture
Woodlice Light
Blowfly maggots
Light
Paramecium
Weak acid
Move to moisture
Move away from light
In dry conditions, they loose water through their permeable skins and dieProtection- less easily seen by predators in dark
Animal Stimulus
Response Importance to Animal
Woodlice Moisture
Woodlice Light
Blowfly maggots
Light
Paramecium
Weak acid
Move away from light
Protection- less easily seen by predators in dark
Animal Stimulus
Response Importance to Animal
Woodlice Moisture
Woodlice Light
Blowfly maggots
Light
Paramecium
Weak acid Move to
weak acid
More chance of finding food-they feed on bacteria which live in slightly acidic water
When do Fiddler crabs emerge from burrow to forage (low or high tide)?
Emerge from burrow at low tide
to forageWhat is the external trigger
stimulus?What is the significance of this
behaviour?
Type of rhythm Animal
Description of rhythmical behaviour
External trigger stimulus Significance
Fiddler crab
Tidal-occurs at the turn of the tide
Crab hunts for food when tide is out
Tide is influenced by the moon
Less chance of being eaten by a fish when tide is out
When does an owl hunt?
What is the significance of this behaviour?
What is the external trigger stimulus?
Type of rhythm Animal
Description of rhythmical behaviour
External trigger stimulus Significance
OwlCircadian-every 24 hours
Hunts at night
Onset of darkness
Owl has a better chance of killing prey
What is the significance of this behaviour?
What is the external trigger stimulus?
When does a hedgehog hibernate?
Type of rhythm Animal
Description of rhythmical behaviour
External trigger stimulus Significance
Hedgehog
Annual –once a year
Hibernates in autumn
Shorter daylengths
Hedgehog can survive winter
When does a swallow migrate from the UK?What is the external trigger
stimulus?What is the significance of this behaviour?
Type of rhythm Animal
Description of rhythmical behaviour
External trigger stimulus Significance
SwallowAnnual –once a year
Migrates to warmer climate in autumn
Shorter daylengths
Better chance of finding food in warmer climate
Behaviour that is repeated regularly
Apparatus used to find out whether woodlice prefer light or dark, dry or humid conditionsWoodlice move away from this so that they are not seen by predatorsType of behaviour practiced by fiddler crab- comes out of burrow when tide is outType of behaviour practiced by hedgehogs when they hibernateType of behaviour practiced by owl when they start hunting at nightBlowfly maggots move away from this to avoid being seen by predatorsWoodlice move to this because their skin is very permeable and prone to drying out
Rhythmical behaviour
Behaviour that is repeated regularly
Choice chamber
Apparatus used to find out whether woodlice prefer light or dark, dry or humid conditions
Light Woodlice move away from this so that they are not seen by predators
Tidal rhythm
Type of behaviour practiced by fiddler crab- comes out of burrow when tide is out
Annual rhythm
Type of behaviour practiced by hedgehogs when they hibernate
Circadian rhythm
Type of behaviour practiced by owl when they start hunting at night
Light Blowfly maggots move away from this to avoid being seen by predators
Moisture Woodlice move to this because their skin is very permeable and prone to drying out