accidentally imported to detroit in wooden packing material from china in mid-1990s. spread by...
TRANSCRIPT
Accidentally imported to Detroit in wooden packing material from China in mid-1990s.
Spread by humans – DON’T MOVE FIREWOOD!!!
Current map at http://emeraldashborer.info/files/MultiState_EABpos.pdf
Emerald Ash Borer (EAB) Life Cycle
Adult (May-July)
Prepupa (August-
April)
Larva (May-November, 4 instars,
1 or 2 years)
Egg (May-July)
Pupa (April-June)
David Cappaert
D. Cappaert, MSU
EAB larvae kill ash trees by feeding on phloem tissue beneath the bark, creating galleries which girdle the tree (cut off its ability to transport sugars).
www.paulnoll.com
Woodpeckers
Asian parasitoid insects
North American parasitoid insects
Cappaert
Parasitism is a relationship where one organism benefits at the expense of another organism (usually of a different species).
A parasite is smaller to its host and usually doesn’t kill its host (fleas on a dog)
A parasitoid is similar in size to its host and kills its host (Alien movie)
Atanycolus (North American parasitoid)
Photos by David Cappaert
Atanycolus (North American parasitoid)
Photos by David Cappaert
Parasitoid larva feeds on EAB larva
Egg on EAB
Female oviposits on EAB through bark
Parasitoid finishes feeding then forms cocoon
POP QUIZ
Name the life stages of EAB Which life stages may be present in
the winter? Name five states where EAB is
present What parts of ash trees do EAB
larvae and EAB adults eat? What organisms prey on EAB?
POP QUIZ - answers Egg, larva, prepupa, pupa, adult Larva (two year life cycle) and
prepupae Michigan, Ohio, Indiana, Illinois,
Wisconsin, Minnesota, Pennsylvania, West Virginia, Virginia, Missouri, Kentucky, New York
EAB larvae eat phloem, EAB adults eat leaves
Woodpeckers and parasitoid wasps