Tamarack Pests

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Fungi Isolated from Eastern Larch Beetles in Minnesota Ophiostoma floccosum Ophiostoma picea Ophiostoma ips Leptographium abietinum Pesotum fragrans Phlebiopsis gigantea Pichia scolyti * based on DNA sequencing Work by Andy Graves -UC Davis, Robert Blanchette-U of MN, Tom Harrington- Iowa State Blue stain fungi – degrade wood quality, may help kill trees by plugging vessels, may be food source for beetles 8
Larch casebearer Exotic needle miner- first found in NA in 1886, Lake States 1920’s - larvae eat the inside of the needle - persistent defoliation by 1930’s led to release of parasites from Europe. 9
Page 1 and 2: Tamarack Pests • Mostly found on
Page 3: Larch sawfly Found around the world
Page 6 and 7: Stem decays Ontario 1950’s Phelli
Page 10 and 11: Outbreak since 2000 Likely cause st
Page 12 and 13: Larch beetle mortality 2000 through
Page 14 and 15: August 2011 14
Page 16 and 17: Tamarack mortality due to Eastern l
Page 18 and 19: Reproductive biology Brood 1 Summer
Page 20 and 21: Black backed woodpecker 20
Page 22 and 23: What is causing the eastern larch b
Page 24 and 25: What is causing the eastern larch b
Page 26 and 27: Overwintering of ELB Confusion in t
Page 28 and 29: Seasonal changes in mean supercooli
Page 30 and 31: Currently……. I still do not kno
Page 32 and 33: Research Background Only two major
Page 34 and 35: Research Studies of insect biology
Page 36 and 37: Research The influence of tamarack

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