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Finding food

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?.

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Finding food

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  1. Finding food Chris Elliott Room: L0/016 Tel: 8654 E-mail : cje2@york.ac.uk

  2. Finding food • Aim: how do animals recognise food? • Use simple invertebrates to work on this question • Use your ingenuity to work on this question

  3. Fruit flies like a banana • So how do they find it?

  4. Food is an active choice? Crickets Cockroaches Fruit fly Locusts

  5. Passive choice • These animals are fixed or slow moving • Can’t choose which way to go • Have to take what comes within their range

  6. What experiments? • might be possible? • How far away? • Which sensory system(s)? Apple in different colours

  7. What experiments? • might be possible? • How long do they remember? • How narrow a range of food? • What about unfamiliar foods? • Soft or hard food?

  8. 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?

  9. Experimental techniques • these might include • Video measurements? • Mazes? • Choice experiments? • Time trials? • Safety • risk assessment?

  10. What animals? • Snails • Pond, garden • Insects • Drosophila, Locusts, Cockroaches, crickets

  11. Aim: • Design a simple experiment • It must be simple • Focus the question • Its your choice! • Gain some results • Draw some conclusions • Make a poster

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