• a aquatic plant that is sumerged in water that is native to Europe, Asia and northern Africa
  • has slender stems, feathery leaves and tiny flowers produced abrove the water's surface
  • very attrative plant
  • arrived in Wisconsin around 1960s
  • came from Europe on the bottom of traveling boats
  • Reproduce by fragmentation
  • The plant produces fragments after creating fruits once or twice during the summer
  • These fragments may then be carried downstream by water currents
  • fragmentation is the breaking off of pieces of the plant and when the pieces break off they are carried downstream and then turn into new plants
  • was first detected in Lake Huron in 1952
  • It starts spring growth sooner than other native aquatic plants
  • Since it is very hard to control, it is considered the most problematic plant in Washington
  • difficult or impossible to remove in a waterbody because it is well established

  • The Adult Eurhychiopsis lecontei, a plant eating weevil native to North America, a weevil is a tick-like creature,
feeds on the stems and leaves, and the larvae bore into the stem of the Eurasian Watermilfoil.

  • The Eurasian watermillfoill was problably purposely introduced to the great lakes


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Photostory Script for Eurasian Watermilfoil:

Slide #1: Introduction Slide:
The Myriophyllum spicatum, or the Eurasian Watermilfoil is an invasive species of aquatic
plants, or specifically, Myriophyllum that is currently crowding the Great Lakes and other fresh
bodies of water in the United States of America.

Slide #2: Description:
The Eurasian Watermilfoil is an aquatic plant that grows when submerged in water
that is native to Europe, Asia and northern Africa. It has green, slender stems and
green feathery leaves. Its flowers, which are of an orange/reddish color, are
produced above the water's surface. Some people consider it a very attractive

Slide #3: Invasiveness:
The Eurasian Watermilfoil is not native to the US, but it came to the US from
Europe on the bottom of traveling boats. It was first detected Lake Huron in 1952.
Part of why it is so invasive is that it reproduces earlier than any other plant native to the area
and it also reproduces by fragmentation. The other reason, is that it thrives in slow-moving or still
freshwater such as the Great Lakes, and it grows in dense mats that can crowd lakes or streams
and leave no room for native species to grow and to live.

Slide #4: Management:
The Eurasian Watermilfoil is difficult or impossible to remove in a water body because it
is well established in freshwater lakes, because of this, it is considered the most problematic
plant in Washington. But to control the Watermilfoil's population, two animals have been
introduced to the locations of invasion, the Acentria ephemerella, an aquatic insect and the
Euhrychiopsis lecontei, a weevil native to North America.

Slide #5: Predators:
Two different species of animals have been introduced to the areas of invasion to help with the
Eurasian Watermilfoil situation. The larvae of the Acentria ephemerella, a species
of Crambidae, or Grass Moths, helps to fight off the population by burrowing into the stems and stripping
off the outer part of the stem while it feeds. The adult Euhrychiopsis lecontei, a species of
Curculionidae (aka "true beetles" or weevils), the largest animal family in the world, feeds on the
stems and leaves, while the larvae performs similar anti-invasive tactics to the Acentria ephemerella,
but there is some proof that fish such as bluegills can reduce the populations of weevils.

Side #6: Prey:
The Eurasian Watermilfoil is not a carnivorous plant such as the Dionaea muscipula, or
more commonly known as, the Venus Flytrap. However, many plants and animals do suffer or die
because of this plant being present in their natural ecosystem. This is because the Eurasian Watermilfoil
grows very rapidly and in dense mats, which leaves no room for other aquatic plants to grow. Several invasive
species have also been seen in Lake Huron, such as Sea Lamprey which has seemed to attributed
to the decline in population of Chinook salmon and Lake Whitefish.

Slide #7: Interesting Facts:
Although the it is an important and pressing matter, the Eurasian Watermilfoil was probably
introduced into the Great Lakes ecosystem on purpose. No one knows why, but it is known that
even if the first traces of the Watermilfoil were discovered around the 1970s, it might have arrived
in the US as early as the 1800s. In some places, it is considered an Aquatic Nuisance Species.

Slide #8: Conclusion/Solution Slide:
The Eurasian Watermilfoil is a dangerous plant that is not to be underestimated. It can reproduce
quickly and in large numbers; grows in thick, dense mats that crowd lakes; thrives in slow moving or
still freshwater and is invading our Great Lakes as we speak. There are several solutions to this problem, but
some of them involve adding chemicals to the lake, killing the Milfoil, but all other species as well. The best
solution, that doesn’t involve exterminating all living things in the area, would be to introduce more
animals such as the Grass Moth and the Euhrychiopsis lecontei to slowly eat away at the Eurasian
Watermilfoil's population until they are no more infesting our freshwater lakes, streams, river, etc.

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All pics must be from Creative Commons

external image popup_eurasian_watermilfoil.png
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Picutre #1:
Eurasian Watermilfoil
Picture #2:
Euasian Watermilfoil mats crowding a lake
Picture #3:
Researchers collecting a sample of the Eurasian Watermilfoil
Picture #4:
Picture of Eurasian Watermilfoil at Cornwell University Research Ponds in New York
Picture #5:
The Larvae of the Eurhychiopsis lecontei burrowing into the Eurasian Watermilfoil
Picture #6:
The Acentria ephemerella, an aquatic insect that was accidentally introduced, but helps fight off the Eurasian Watermilfoil population
Picture #7:
Eurasian Watermilfoil in the Patuxent River
Picture #8:
Eurasian Watermilfoil invades lakes, ponds and other bodies

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Your Photostory was not where its supposed to be. But your page is very well made and your Inspiation was very organized.
Julie, Lane, and Sydney
We coulden't find the Photostory and the pictures are suposed to be links. the skript is okay and the pictures are good too.
~Lisa P, Gloria N.

I couldn't find your photostory and it was very hard to read your concept map web thing. You do have a lot of information but make sure to state your sources. - Katie C