finding food n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Finding food PowerPoint Presentation
Download Presentation
Finding food

Loading in 2 Seconds...

play fullscreen
1 / 11

Finding food - PowerPoint PPT Presentation


  • 117 Views
  • Uploaded on

Finding food. Chris Elliott Room: L0/016 Tel: 8654 E-mail : cje2@york.ac.uk. Finding food. Aim: how do animals recognise food? Use simple invertebrates to work on this question Use your ingenuity to work on this question. Fruit flies like a banana. So how do they find it?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Finding food' - stephen-best


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
finding food

Finding food

Chris Elliott

Room: L0/016

Tel: 8654

E-mail : cje2@york.ac.uk

finding food1
Finding food
  • Aim: how do animals recognise food?
  • Use simple invertebrates to work on this question
  • Use your ingenuity to work on this question
fruit flies like a banana
Fruit flies like a banana
  • So how do they find it?
food is an active choice
Food is an active choice?

Crickets

Cockroaches

Fruit fly

Locusts

passive choice
Passive choice
  • These animals are fixed or slow moving
    • Can’t choose which way to go
    • Have to take what comes within their range
what experiments
What experiments?
  • might be possible?
    • How far away?
    • Which sensory system(s)?

Apple in different colours

what experiments1
What experiments?
  • might be possible?
    • How long do they remember?
    • How narrow a range of food?
    • What about unfamiliar foods?
    • Soft or hard food?
what techniques
What techniques?
  • Watching?
    • See what happens;
    • decide on your question(s)
      • refine your approach
      • narrow the question
  • Ask what hypothesis you are testing?
    • multiple stages to your experiment
    • how many replicates?
experimental techniques
Experimental techniques
  • these might include
    • Video measurements?
    • Mazes?
    • Choice experiments?
    • Time trials?
  • Safety
    • risk assessment?
what animals
What animals?
  • Snails
    • Pond, garden
  • Insects
    • Drosophila, Locusts, Cockroaches, crickets
slide11
Aim:
  • Design a simple experiment
    • It must be simple
  • Focus the question
    • Its your choice!
  • Gain some results
    • Draw some conclusions
    • Make a poster