Download - From little things - locusts in NSW
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FROM LITTLE THINGS BIG THINGS GROW
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Did you know
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from little things
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big things grow
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POP QUIZ
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name the natural disaster
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flood
drought
dust storm
locusts
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from little locustshttp://www.daff.gov.au/animal-plant-health/locusts
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big disasters grow
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Did you know
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Locusts change from individuals doing their own thing to ravenous armies working together.
What causes the change?
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…. in other words
population
locust numbers
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When population density is low, locusts behave as individuals, much like grasshoppers.
http://www.daff.gov.au/animal-plant-health/locusts
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When population density is high, individuals undergo changes, andthey form into gregariously behaving bands of nymphs or swarms of adults.
http://www.daff.gov.au/animal-plant-health/locusts
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Swarms may contain millions of locusts and cover an area of several square kilometres.
http://www.daff.gov.au/animal-plant-health/locusts
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Did you know
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An Australian plague locust can eat up to half its body weight in plants each dayor about 0.2g.
http://www.daff.gov.au/animal-plant health/locusts/about/faqs
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POP QUIZ
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Name the biggest eater
A herd of wild elephants or a swarm of locusts?
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A big enough swarm of locusts could eat more than a herd of wild elephants.
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Watch amazing time-lapse footage of locusts moving across African deserts in the next slide.
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Ravenous locust swarms can do severe damage to pasture, to cereal crops such as wheat and oats, and to summer forage crops such as sorghum and lucerne. In closely settled districts, vegetables and even orchard trees can be badly damaged.http://www.dpi.nsw.gov.au/agriculture/pests-weeds/insects/general/locusts
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Changes in body shape and colour, and in fertility, survival and migratory behaviour also occur. These changes are so dramatic in many species that the swarming and non-swarming forms were once considered to be different species.http://www.daff.gov.au/animal-plant-health/locusts
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View a simple experiment on how locusts perceive the signal to swarm in the next slide.
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POP QUIZ
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When locusts strike in Australia who’s affected?
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farmers
consumers
exporters
… in other words
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everyone
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Did you know
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this spring in a field near you
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a locust plague is due
Locust eggs
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POP QUIZ
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What can bedone to save our food?
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* keep an eye on the news
* check websites for sightings http://www.dpi.nsw.gov.au/agriculture/pests-weeds/insects/general/locusts
* find out about control methods
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know what to look for
Can you spot the locust eggs?
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download a guide
http://www.dpi.nsw.gov.au/agriculture/pests-weeds/insects/general/locusts
http://www.daff.gov.au/animal-plant-health/locusts/about/id-guide
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Is this a locust?
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http://www.daff.gov.au/animal-plant-health/locusts/about/id-guide/description_of_adults/9._giant_or_hedge_grasshopper_valanga_irregularis
No way…I’m Australia’s biggest grasshopper. I have red spines with black tips on my legs. Plague locusts are much smaller.
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If you see something,
say something.
And help .. .
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and if you can’t beat ‘em … some people eat ‘em
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Locusts are high in protein and eaten in several countries.
They are stir fried, roasted, grilled, boiled or dried and kept for later.
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For a bit of extra crunch a how does a locust taco sound?
Take a look at this and other recipes from around the world on the United Nations locust web pages: http://www.fao.org/ag/locusts/en/info/info/faq/index.html
But before you take a bite remember…..
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In Australia we spray to kill
locusts so we can’t eat them.
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a presentation by:
http://www.landlearnnsw.org.au