monarch butterflies
DESCRIPTION
Monarch Butterflies. PowerPoint Pizzazz by the ‘Butterfly Lady’ Jacqui Knight of Russell, Bay of Islands, NZ. Danaus plexippus. Life Cycle of a Monarch Butterfly. 1 – Egg/ Ovum 4 days (longer if cool). 1- Egg Ovum. 4. 2. 3. Egg (Ovum). smaller than a pin male dies soon after mating - PowerPoint PPT PresentationTRANSCRIPT
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Monarch Butterflies
PowerPoint Pizzazzby the ‘Butterfly Lady’ Jacqui Knight
of Russell, Bay of Islands, NZ
Danaus plexippus
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2Life Cycle of a Monarch Butterfly
1- Egg
Ovum
2
3
4
1 – Egg/Ovum4 days(longer if cool)
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• smaller than a pin
• male dies soon after mating
• one female laid 1179 eggs!*
• average female lays 400 eggs!
Egg (Ovum)
Photo and statistics:* Monarch Lab,
University of Minnesota, used with permission
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after about four days eggs are transparent
(can be as little as one day or may take all winter)
black face of caterpillar can be seen
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5Life Cycle : Caterpillar
1 - Egg
Ovum
2 - Caterpillar
Larva
3
4
2 – Caterpillar/Larva10-14 days
1 – Egg/Ovum4 days
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Caterpillars (Larvae)
• emerges only 2mm long
• eats egg shell
• grows in stages (five instars)
• eats day and night for 9-14 days (Summer)
• slower in Winter
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egg to chrysalis, caterpillar grows in size 3000+ times
five pairs of legs
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finally 5-6cm long
Not palatable generally to birds - chemical defence against predators
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10Life Cycle : Chrysalis
1 - Eggs
Ovum
2 - Caterpillar
Larva
3 – ChrysalisPupa
4
2 – Caterpillar/Larva10-14 days
1 – Egg/Ovum4 days
3 - Chrysalis/Pupa10-14 days
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Chrysalis
• caterpillar lays down mat of silk
• in centre of mat a tiny white silk button
• clasps button with last two prolegs and lets go with front legs
• hangs upside down in a J formation
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13skin splits, revealingchrysalisinside
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14wriggling chrysalis pushes old skin up and out ofthe way
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19chrysalis wriggles and moulds into smooth shape
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The make-up of the specks of gold unknown.
The green colouration is caterpillar’s blood or haemolymph.
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21pale green changes to jade green
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cuticle (skin) actually transparenthangs 10-14 days as butterfly body forms inside
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24Fourth Stage : Adult
1 - Eggs
Ovum
2 - Caterpillar
Larva
3 - Pupa
Chrysalis
4 - Adult
Imago
2 – Caterpillar/Larva10-14 days
1 – Eggs/Ovum4 days
4 – Adult/Imagomates
3 - Chrysalis/Pupa10-14 days
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25Chrysalis shell breaks open
Monarchbutterflyemerges
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26Adult pumps fluid into wings to straighten and strengthen
Then knits together two parts of mouth (proboscis)
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27finds a mate…
… and life cycle begins all over again
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• Females have broader veins
AdultPhotograph courtesy of Dale McClung,
http://www.adver-net.com/FMonHome.html
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Adult
• Males have a black dot, a scent pouch, on their lower wing
• Their black veins are also thinner
Photograph courtesy of Dale McClung, http://www.adver-net.com/FMonHome.html
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Food Sources - Butterfly– Echium fastuosum ‘Pride of Madeira’– Schinus molle (Pepper Tree) – Tweedia– Buddleia– Bottlebrush, Poinsettia, Hibiscus– Cosmos, Lantana, Asters, Sage,
Yarrow, Phlox, Zinnias– any flowering plants, nectar-rich
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Butterfly feeder
• sugar waterOR
• apple juice
• pour a little onto a sponge or paper towel
• leave on brightly coloured plate
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Butterfly feeder
• 1 teaspoon sugar dissolved in 2 cups water
• DO NOT USE HONEY (can spread disease from bees to other insects)
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• Milkweed (Gomphocarpus sp.)was called Asclepias sp.
• poisonous cardenolides or cardiac glycosides
• cardenolides are poisonous to vertebrates (animals with backbone)
Food Sources - Caterpillars
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Food Sources - Caterpillars
Swan Plant Gomphocarpus fruticosus
– grows 1-2 metres
– slender leaves
– clusters of small cream flowers
– seedpods resembling swans, silvery green,
– seeds slightly bigger than a pin-head, hard, black
– plants often stripped by Monarch caterpillars and die in height of season
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Food Sources - Caterpillars
Giant Swan Plant Gomphocarpus physocarpus
– 2-3 metres– large round leaf– larger cream flowers– round seedpods more like hairy golfballs– rapid growth, strong plant, usually outlives
caterpillars’ attacks– may need staking - plant out of strong winds
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WARNING!!!
• milky latex-like sap
• poisonous
• can cause itching
• if eaten - vomiting, stupor, weakness, spasms
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37ALTERNATIVE FOOD SOURCES
• Only suitable for caterpillars 2cm +
• Pumpkin, cucumber rind, courgettes
• Put thin slivers on to a plate
• Use the ‘moat’ process to force the caterpillars to eat
• Frass (poop) will change colour!
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Pests
• Birds – generally do not predate Monarchs – caterpillars are poisonous to them – some birds are exception and build up tolerance to poison
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Pests
• Wasps:– Tachinid larva burrows into a Monarch larva
(caterpillar), eats tissues and fluid from Monarch– Brachonid wasp, female
lays one egg inside Monarchlarva. From that egg, asmany as 32 genetically-identical adults develop
Photograph: Morris, Clearwater, Florida, USA
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Pests
• Do not try and kill pests --
• Some wasps are beneficial, introduced to control other pests such as aphids
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Protection from Wasps
1. Vase full of water on a tray
2. Spread a thin layer of water on the tray to act as a moat
3. Put a branch of Swan Plant in the vase
4. Remove small caterpillars very gently from their host plant using a ‘pocket’
5. Add caterpillars by pegging pocket to Swan Plant
6. Add more food daily to the vase
7. Under the tray you will want to put layers of newspaper to catch all the frass or poop
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Protection from Wasps
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New Zealand
• NZ has only 23 species of butterfly – 11 endemic – 12 non-endemic
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New Zealand
• first recorded in NZ 1800s
• believed to have blown here on a storm
• no harmful effects on NZ ecosystem
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New Zealand
• 1960-1970s Monarch Butterflies tagged
• 6500 butterflies tagged
• 1011 recovered
• Only 28 butterflies flew more than 20km
Photo by Ed Wesley, NE Pennsylvania
Photo courtesyLinda & Jeff Ives
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New Zealand
• no pattern of migration
• parks and gardens – thousands of butterflies in one tree
• following taken near Russell, Bay of Islands
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North America
• Native– East of the Rockies: Reserves in Mexico– Autumn: migrate up to 3000km south to
Mexico for the North American Winter• That’s one and a half times the length of New Zealand!
– Spring: migrate back to where their great great grandparents come from – 5th generations!
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North America• Native to America
– West of the Rockies: overwinter in California – e.g. Monterey Peninsula
– Spring: migrate back north – some say to where their forebears lived.
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North America80% of the Eastern Population of
migrating Monarchs enters Mexico by crossing the Rio Grande in Southwest
Texas.
For six weeks each Fall (Autumn) many thousands of monarchs cluster and nectar nightly on the scrubby, dry vegetation. Thousands of square miles
of scrub brush provide shelter and sustenance for the many millions of
Monarchs.
This pair of tagged Monarchs will nectar on the Lantana, warming themselves in the direct sunlight
before resuming their southward trek. Photo courtesy
Rio Bravo Nature Center Foundation, Inc.
Eagle Pass, Texas
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51For further information (USA)
http://www.monarchwatch.org
http://www.monarch.org.nz
http://www.basrelief.org/
http://www.lifestrands.org/
Thanks to Morris (Clearwater, Florida, USA) and Nadine Bovis (Titirangi) for many of the photographs
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Monarch Butterflies
for further information, plants, presentations to schools and clubs etc contact the ‘Butterfly Lady’, Jacqui Knight, Russell, Bay of
Islands, NZThat’s all
folks!