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Invasive Species!!!!

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by

rabia choudry

on 16 October 2012

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Transcript of Invasive Species!!!!

invasive insect specie
found in northern America in June 2003
arrived in north America through improper treated wooden packaging material from Asia
it is a green beetle native to Asia
Emerald Ash Borer is highly destructive to ash trees in its area
it has spread to multiple locations in the lower Peninsula and far north as the Mackinac bridge
its a herbivore it eats plants or to be more specific it eats ash trees
it is a primary consumer Emerald Ash Borer! The Threat slender, cream coloured, flattened, brown head
mature are from 26-32mm long
have a pair of brown pinchers at the tip Larva metallic green
8.5 to 13.5mm long
head is flat, with black eyes
small antenna extending from the head
curved back
has wings Adult Emerald Ash Borer Egg
light yellow/cream coloured prior to hatching
1mm long and 0.6mm in diameter Pupa
are 10-14mm long, cream coloured, terminal abdominal segments that curve upwards
their antenna extend to the base of the wings Symptoms and Damage ash trees in Ontario, north central region of us have been having a poor range of healthy tree conditions
including generalized crown dieback, leaf diseases and drought
not clear if the symptoms of ash decline are caused by the Emerald Ash Borer or some other factor What It Does adult will colonize a tree by laying eggs on the bark crevices on the trunk and branches
larvae then tunnel beneath the bark and feed on cambium a layer of cells between the bark and sapwood
high numbers of larval tunnels girdle the trunk, cutting off transport of water and nutrients
tree starts to die from the top to the bottom
adult beetles also feed on the leaves of ash trees, this feeding damage is not major compare to larval tunneling Biological Control 10hg term management to control invasive species
it involves research of the species origin, isolate, find its natural enemies
from parasites to predators
u.s permits to release highly host specific natural enemies or "bio control agents"
after the compremation and extensive research on the biology of both host and natural enemies in U.S Emerald Ash Borer's Predators
2 types
stingless wasp
wood peckers eat the larvae
wood peckers go crazy looking for fresh larvae Economic Factors estimated costs for urban areas in north America because of Emerald Ash Borer ranges up to $12 billion Environmental Impact killed millions of ash trees
in 5 years 98% of ash trees have died
impacts ash organisms Facts Emerald's scientific name is Agrilus Planipennis
adults Latin name is Agrilus Planipennis Fairmaire
natural range is eastern Russia, northern China, Japan and Korea
attacks healthy trees as well but lays its eggs and only feeds on stressed trees Emerald is able to attack/kill any healthy tree
native ash species are at risk
in natural and urban settings, green ash trees are the most planted trees in urban forests
ash trees of all sizes can be attacked
it is very hard to detect Emerald
commonly we find out that a tree is infested after a year after the attack
estimated that Emerald has attacked several hundred thousand ash trees in Essex country
8-10 million trees in south Eastern Michigan Thankyou for watching my presentation!!! Life Cycle lives a 1 year life cycle
but some might live a 2 year life cyclsingle eggs are laid, from May through July
hatched in 20 days
larvae go through 4 stages as they eat on sapwood
larvae eat aggressively until October or even November and then stay in the tree over winter
new adults stay in their pupal chambers or 8-15 days then go throgh the bark to go outside
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