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c) Leaf-blister sawfly (Phylacteophaga froggatti) Leaf-blister sawfly was accidentally introduced to WA in 1978. The distribution range of this species is restricted to coastal areas. It appears that this species is not able to maintain populations during the dry hot summers of inland areas. The most effective species of natural enemy is missing from WA (Loch et al., 2004); however, a suite of other specialist and generalist natural enemies are present in WA. Eggs are laid mostly on juvenile leaves, so most damage occurs in plantations up to three years old. 1990– 94 1995 1996 Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Mt Barker Northcliffe Denbarker Porongurups Palmdale Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Perillup Mt Barker Denmark Albany Manypeaks Mettler Northcliffe Denbarker Porongurups Palmdale Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Perillup Mt Barker Denmark Albany Manypeaks Mettler Northcliffe Denbarker Porongurups Palmdale Denmark Albany Manypeaks Mettler CRC for Forestry Technical Report 216: November 2011 Are insect herbivores in eucalypt plantations a worsening problem? 50
1997 1998 Harvey Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Perillup Mt Barker Northcliffe Denbarker Porongurups Palmdale Harvey Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Perillup Mt Barker Denmark Albany Manypeaks Mettler Northcliffe Denbarker Porongurups Palmdale 1999 Boddinton Harvey Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Perillup Mt Barker Denmark Albany Manypeaks Mettler Northcliffe Denbarker Porongurups Palmdale 2000 Boddinton Harvey Collie Busselton Donnybrook MacAlinden Boyup Brook Frankland Scott River Manjimup Rocky Gully Perillup Mt Barker Denmark Albany Manypeaks Mettler Northcliffe Denbarker Porongurups Palmdale Denmark Albany Manypeaks Mettler CRC for Forestry Technical Report 216: November 2011 Are insect herbivores in eucalypt plantations a worsening problem? 51
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CRC for Forestry Researching sustai
Page 3 and 4:
Acknowledgements We thank David de
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Contents Acknowledgements .........
Page 7 and 8: Executive summary The total area of
Page 9 and 10: Introduction Over the last few deca
Page 11 and 12: Databases Methods The annual Pest,
Page 13 and 14: a set of tables roughly correspondi
Page 15 and 16: Table 2. Correlation coefficients f
Page 17 and 18: (c) Esperance, WA Number of insect
Page 19 and 20: (a) Green Triangle Severity index (
Page 21 and 22: For WA, Abbott (1993a) and Strauss
Page 23 and 24: 3 Have new insect herbivore species
Page 25 and 26: Discussion In general, there was su
Page 27 and 28: insect herbivores have been acciden
Page 29 and 30: Findings from this report are consi
Page 31 and 32: Future trends So what trends might
Page 33 and 34: Conclusions In this historical anal
Page 35 and 36: References Abbott, I. (1993a) Insec
Page 37 and 38: Jones, R.E. (2001) Mechanisms for l
Page 39 and 40: Paine, T.D., Steinbauer, M.J. & Law
Page 41 and 42: Appendices Changes in damage caused
Page 43 and 44: 2010 Wattle Range Dorodong Poolaije
Page 45 and 46: 2009-10 Wattle Range Dorodong Poola
Page 47 and 48: d) Autumn gum moth (Mnesampela priv
Page 49 and 50: e) Spitfire sawfly (Perga affinis)
Page 51 and 52: 2. South-west WA a) Yellow-belly ch
Page 53 and 54: ) Eucalyptus weevil (Gonipterus pla
Page 55 and 56: 2000 Boddinton Harvey Collie Bussel
Page 57: 2007 Boddinton Harvey Collie Bussel
Page 63 and 64: d) Autumn gum moth (Mnesampela priv
Page 69 and 70: 1994 1995 1996 1997 Collie Busselto
Page 75 and 76: ) Eucalyptus weevil (Gonipterus sp.
Page 77: d) Autumn gum moth (Mnesampela priv
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