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Gaynor Malloch
Gaynor Malloch is a Research Scientist collaborating in studying pest arthropod biology on an international and national scale. She shares responsibility for implementing research objectives funded by RESAS, PCL, Bayer and Syngenta. She also supervises and teaches molecular techniques to PhD, MSc and BSc Hons students and visiting / temporary workers.
Current research interests
The Scottish Myzus persicae population is being studied using molecular markers to define clones and superclones. The work has already demonstrated a severe genetic bottleneck with less than 20 major clones in the UK. Genotyping identifies several aphid properties including the presence of insecticide resistance mechanisms, host plant preferences and biological properties such as reproductive potential.
Other work includes laboratory and field virus epidemiology studies. Molecular techniques are being developed to determine the acquisition levels of mosaic potato viruses in various potential aphid vector species in field situations.
Past research
- 2002-present: Research Associate at the James Hutton Institute. Shared responsibility for the research programme in molecular ecology. The current programme involves the molecular analysis of the virus vector aphid Myzus persicae and field virus epidemiology studies. The epidemiology field site is being used to assess the impact of these crop production methods on small mammal populations.
- 1992 - 2002: Research Assistant at the Scottish Crop Research Institute, Dundee. Appointed to this position as part of a SERAD initiative to investigate aphid vector populations using molecular methods. The programme also involved the molecular analysis of population structures of raspberry beetle and their bacterial endosymbionts.
- 1987 - 1992: Assistant Scientific Officer in the Zoology Department of the Scottish Crop Research Institute. Provided technical support for a team studying the population dynamics of the potato cyst nematode Globodera pallida.
Bibliography
- Jackson G.E.; Malloch, G.; McNamara, L.; Little, D. (2020) Grain aphids (Sitobion avenae) with knockdown resistance (kdr) to insecticide exhibit fitness trade-offs, including increased vulnerability to the natural enemy Aphidius ervi., PLoS ONE, 15, Article No. e0230541.
- Walsh, L.E.; Gaffney, M.T.; Malloch, G.L.; Foster, S.P.; Williamson, M.S.; Mangan, R.; Purvis G. (2019) First evidence of retained sexual capacity and survival in the pyrethroid resistant Sitobion avenae (F.) (Hemiptera: Aphididae) SA3 super-clone following exposure to a pyrethroid at current field-rate., Irish Journal of Agriculture and Food Research, 58, 21-26.
- Lazarova, S.S.; Brown, D.J.F.; Oliveira, C.M.G.; Fenton, B.; Mackenzie, K.; Wright, F.; Malloch, G.; Neilson, R. (2016) Diversity of endosymbiont bacteria associated with a non-filarial nematode group., Nematology, 18, 615-623.
- Wilson, A.; Fenton, B.; Malloch, G.; Boag, B.; Hubbard, S.; Begg, G. (2016) Urbanisation versus agriculture: a comparison of local genetic diversity and gene flow between wood mouse Apodemus sylvaticus populations in human-modified landscapes., Ecography, 39, 87-97.
- Malloch, G.; Pickup, J.; Highet, F.; Foster, S.; Williamson M.; Fenton, B. (2016) Assessment of the spread of pyrethroid resistant Sitobion avenae in the UK and an update on the changes in the population structure of Myzus persicae in Scotland., Proceedings Crop Protection in Northern Britain 2016, Dundee, 23-24 February 2016, pp 223-228.
- Fenton, B.; Salter, W.T.; Malloch, G.; Begg, G.; Anderson, E. (2015) Stopped in its tracks: how -cyhalothrin can break the aphid transmission of a potato potyvirus., Pest Management Science, 71, 1611-1616.
- Wilson, A.; Fenton, B.; Malloch, G.; Boag, B.; Hubbard, S.; Begg, G.S. (2014) Coexisting small mammals display contrasting strategies for tolerating instability in arable habitat., European Journal of Wildlife Research, 60, 811-820.
- Kati, A.N.; Mandrioli, M.; Skouras, P.J.; Malloch, G.L.; Voudouris, C.C.; Venturelli, M.; Manicardi, G.C.; Tsitsipis, J.A.; Fenton, B.; Margaritopoulos, J.T. (2014) Recent changes in the distribution of carboxylesterase genes and associated chromosomal rearrangements in Greek populations of the tobacco aphid Myzus persicae nicotianae., Biological Journal of the Linnean Society, 113, 455-470.
- Malloch, G.; Williamson, M.; Foster, S.; Fenton, B. (2014) Analysis of grain aphid (Sitobion avenae) Populations - genetic composition and the frequency of pyrethroid resistance., Research Report 2140004/ R480, Potato Council.
- Van Toor, R.F.; Malloch, G.L.; Anderson, E.A.; Dawson, G.; Fenton, B. (2012) Insecticide resistance profiles can be misleading in predicting the survival of Myzus persicae genotypes on potato crops following the application of different insecticide classes., Pest Management Science, 69, 93-103.
- Fenton, B.; Margaritopoulos, J.T.; Malloch, G.L.; Foster, S.P. (2010) Micro-evolutionary change in relation to insecticide resistance in the peach-potato aphid, Myzus persicae., Ecological Entomology, 35, 131-146.
- Fenton, B.; Kasprowicz, L.; Malloch, G.; Pickup, J. (2010) Reproductive performance of asexual clones of the peach-potato aphid (Myzus persicae, Homoptera: Aphididae) colonising Scotland in relation to host plant and field ecology., Bulletin of Entomological Research, 100, 451-460.
- Van Toor, R.; Malloch, G.; Fenton, B. (2009) A concept for management of aphid virus-vectors and insecticide resistance in Myzus persicae on potatoes in Scotland., Redia, 92, 219-221.
- Margaritopoulos, J.T.; Kasprowicz, L.; Malloch, G.L.; Fenton, B. (2009) Tracking the global dispersal of a cosmopolitan insect pest, the peach potato aphid., BMC Ecology, 9(13).
- Kasprowicz, L.; Malloch, G.; Foster, S.; Pickup, J.; Zhan, J.; Fenton, B. (2008) Clonal turnover of MACE-carrying peach-potato aphids (Myzus persicae (Sulzer), Homoptera: Aphididae) colonizing Scotland., Bulletin of Entomological Research, 98, 115-124.
- Fenton, B.; Malloch, G.; Winfield, A.; Wilson, A.; Ramsey, J.; Jander, G. (2008) Aphids join the genomics age., Annual Report of the Scottish Crop Research Institute for 2007, pp24-25.
- Ramsey, J.S.; Wilson, A.C.C.; de Vos, M.; Sun, Q.; Tamborindeguy, C.; Winfield, A.; Malloch, G.; Smith, D.M.; Fenton, B.; Gray, S.M.; Jander, G. (2007) Genomic resources for Myzus persicae: EST sequencing, SNP identification, and microarray design., BMC Genomics, 8, 423.
- Malloch, G.; Highet, F.; Kasprowicz, L.; Pickup, J.; Neilson, R.; Fenton, B. (2006) Microsatellite marker analysis of peach-potato aphids (Myzus persicae, Homoptera: Aphididae) from Scottish suction traps., Bulletin of Entomological Research, 96, 573-582.
- Lazarova, S.S.; Malloch, G.; Oliveira, C.M.G.; Hubschen, J.; Neilson, R. (2006) Ribosomal and mitochondrial DNA analyses of Xiphinema americanum-group populations., Journal of Nematology, 38, 404-410.
- Fenton, B.; Malloch, G.; Woodford, J.A.T.; Foster, S.P.; Anstead, J.; Denholm, I.; King, L.; Pickup, J. (2005) The attack of the clones: tracking the movement of insecticide-resistant peach-potato aphids Myzus persicae (Hemiptera: Aphididae)., Bulletin of Entomological Research, 95, 483-494.
- Oliveira, C.M.G.; Fenton, B.; Malloch, G.; Brown, D.J.F.; Neilson, R. (2005) Development of species-specific primers for the ectoparasitic nematode species Xiphinema brevicolle, X. diffusum, X. elongatum, X. ifacolum and X. longicaudatum (Nematoda: Longidoridae) based on ribosomal DNA sequences., Annals of Applied Biology, 146, 281-288.
- Malloch, G.; Fenton, B. (2005) Super-infections of Wolbachia in byturid beetles and evidence for genetic transfer between A and B super groups of Wolbachia., Molecular Ecology, 14, 627-637.
- Oliveira, C.M.G.; Ferraz, L.C.C.B.; Monteiro, A.R.; Fenton, B.; Malloch, G.; Neilson, R. (2004) Molecular and morphometric analyses of Xiphidorus species (Nematoda: Longidoridae)., Nematology, 6, 715-727.
- Ritchie, A.; Blackwell, A.; Malloch, G.; Fenton, B. (2004) Heterogeneity of ITS1 sequences in the biting midge, Culicoides impunctatus (L) suggests a population in Argyll Scotland may be genetically distinct., Genome, 47, 546-558.
- Birch, A.N.E.; Boag, B.; Newton, A.C.; Gordon, S.C.; Fenton, B.; Malloch, G.; Hallett, P.D.; Iannetta, P.P.M.; Stephens, S.E.; Neilson, S.; Wright, G.M.; Marshall, B.; McKenzie, B.M.; Squire, G.R.; Gill, P.; Wheatley, R.E. (2004) The SCRI LEAF Innovation Centre: Agro-ecosystem research which develops and promotes sustainable agriculture strategies and policies for Scotland, UK and Europe., Annual Report of the Scottish Crop Research Institute for 2003/2004, pp107-114.
- Fenton, B.; Birch, A.N.E.; Clyne, C.; Kasprowicz, L.; Malloch, G.; Mitchell, C.; Gordon, S.C. (2004) No sex please - we're British aphids., Annual Report of the Scottish Crop Research Institute for 2003/2004, pp164-166.
- Fenton, B.; Malloch, G.; Navajas, M.; Hillier, J.; Birch, A.N.E. (2003) Clonal composition of the peach-potato aphid Myzus persicae (Homoptera: Aphididae) in France and Scotland: Comparative analysis with IGS fingerprinting and microsatellite markers., Annals of Applied Biology, 142, 255-267.
- Birch, A.N.E.; Begg, G.S.; Brennan, R.M.; Fenton, B.; Gordon, S.C.; Griffiths, B.S.; Griffiths, D.W.; Hillier, J.; Malloch, G.; Squire, G.R.; Wheatley, R.E. (2002) Developing sustainable pest management strategies for a changing future., Annual Report of the Scottish Crop Research Institute for 2001/2002, pp184-189.
- Fenton, B.; Malloch, G.L.; Brennan, R.M.; Birch, A.N.E. (2002) Evolution and adaptation of insects and mites to vegetation systems., Annual Report of the Scottish Crop Research Institute for 2000/2001, pp144-147.
- Malloch, G.; Fenton, B.; Goodrich, M.A. (2001) Phytogeny of raspberry beetles and other Byturidae (Coleoptera)., Insect Molecular Biology, 10, 281-291.
- Malloch, G.; Fenton, B.; Butcher, R.D.J. (2000) Molecular evidence for multiple infections of a new subgroup of Wolbachia in the European raspberry beetle Byturus tomentosus., Molecular Ecology, 9, 77-90.
- Fenton, B.; Birch, A.N.E.; Malloch, G.; Lanham, P.G.; Brennan, R.M. (2000) Gall mite molecular phylogeny and its relationship to the evolution of plant host specificity., Experimental and Applied Acarology, 24, 831-861.
- Fenton, B.; Malloch, G.; Germa, F. (1998) A study of variation in rDNA ITS regions shows that two haplotypes coexist within a single aphid genome., Genome, 41, 337-345.
- Fenton, B.; Woodford, J.A.T.; Malloch, G. (1998) Analysis of clonal diversity of the peach-potato aphid, Myzus persicae (Sulzer), in Scotland, UK and evidence for the existence of a predominant clone., Molecular Ecology, 7, 1475-1487.
- Blok, V.C.; Malloch, G.; Harrower, B.E.; Phillips, M.S.; Vrain, T.C. (1998) Interspecific variation in ribosomal DNA in populations of potato cyst nematode Globodera pallida., Journal of Nematology, 30, 262-274.
- Jackson G.E.; Malloch, G.; McNamara, L.; Little, D. (2020) Grain aphids (Sitobion avenae) with knockdown resistance (kdr) to insecticide exhibit fitness trade-offs, including increased vulnerability to the natural enemy Aphidius ervi., PLoS ONE, 15, Article No. e0230541.
- Walsh, L.E.; Gaffney, M.T.; Malloch, G.L.; Foster, S.P.; Williamson, M.S.; Mangan, R.; Purvis G. (2019) First evidence of retained sexual capacity and survival in the pyrethroid resistant Sitobion avenae (F.) (Hemiptera: Aphididae) SA3 super-clone following exposure to a pyrethroid at current field-rate., Irish Journal of Agriculture and Food Research, 58, 21-26.
- Lazarova, S.S.; Brown, D.J.F.; Oliveira, C.M.G.; Fenton, B.; Mackenzie, K.; Wright, F.; Malloch, G.; Neilson, R. (2016) Diversity of endosymbiont bacteria associated with a non-filarial nematode group., Nematology, 18, 615-623.
- Wilson, A.; Fenton, B.; Malloch, G.; Boag, B.; Hubbard, S.; Begg, G. (2016) Urbanisation versus agriculture: a comparison of local genetic diversity and gene flow between wood mouse Apodemus sylvaticus populations in human-modified landscapes., Ecography, 39, 87-97.
- Malloch, G.; Pickup, J.; Highet, F.; Foster, S.; Williamson M.; Fenton, B. (2016) Assessment of the spread of pyrethroid resistant Sitobion avenae in the UK and an update on the changes in the population structure of Myzus persicae in Scotland., Proceedings Crop Protection in Northern Britain 2016, Dundee, 23-24 February 2016, pp 223-228.
- Fenton, B.; Salter, W.T.; Malloch, G.; Begg, G.; Anderson, E. (2015) Stopped in its tracks: how -cyhalothrin can break the aphid transmission of a potato potyvirus., Pest Management Science, 71, 1611-1616.
- Wilson, A.; Fenton, B.; Malloch, G.; Boag, B.; Hubbard, S.; Begg, G.S. (2014) Coexisting small mammals display contrasting strategies for tolerating instability in arable habitat., European Journal of Wildlife Research, 60, 811-820.
- Kati, A.N.; Mandrioli, M.; Skouras, P.J.; Malloch, G.L.; Voudouris, C.C.; Venturelli, M.; Manicardi, G.C.; Tsitsipis, J.A.; Fenton, B.; Margaritopoulos, J.T. (2014) Recent changes in the distribution of carboxylesterase genes and associated chromosomal rearrangements in Greek populations of the tobacco aphid Myzus persicae nicotianae., Biological Journal of the Linnean Society, 113, 455-470.
- Van Toor, R.F.; Malloch, G.L.; Anderson, E.A.; Dawson, G.; Fenton, B. (2012) Insecticide resistance profiles can be misleading in predicting the survival of Myzus persicae genotypes on potato crops following the application of different insecticide classes., Pest Management Science, 69, 93-103.
- Fenton, B.; Margaritopoulos, J.T.; Malloch, G.L.; Foster, S.P. (2010) Micro-evolutionary change in relation to insecticide resistance in the peach-potato aphid, Myzus persicae., Ecological Entomology, 35, 131-146.
- Fenton, B.; Kasprowicz, L.; Malloch, G.; Pickup, J. (2010) Reproductive performance of asexual clones of the peach-potato aphid (Myzus persicae, Homoptera: Aphididae) colonising Scotland in relation to host plant and field ecology., Bulletin of Entomological Research, 100, 451-460.
- Van Toor, R.; Malloch, G.; Fenton, B. (2009) A concept for management of aphid virus-vectors and insecticide resistance in Myzus persicae on potatoes in Scotland., Redia, 92, 219-221.
- Margaritopoulos, J.T.; Kasprowicz, L.; Malloch, G.L.; Fenton, B. (2009) Tracking the global dispersal of a cosmopolitan insect pest, the peach potato aphid., BMC Ecology, 9(13).
- Kasprowicz, L.; Malloch, G.; Foster, S.; Pickup, J.; Zhan, J.; Fenton, B. (2008) Clonal turnover of MACE-carrying peach-potato aphids (Myzus persicae (Sulzer), Homoptera: Aphididae) colonizing Scotland., Bulletin of Entomological Research, 98, 115-124.
- Ramsey, J.S.; Wilson, A.C.C.; de Vos, M.; Sun, Q.; Tamborindeguy, C.; Winfield, A.; Malloch, G.; Smith, D.M.; Fenton, B.; Gray, S.M.; Jander, G. (2007) Genomic resources for Myzus persicae: EST sequencing, SNP identification, and microarray design., BMC Genomics, 8, 423.
- Malloch, G.; Highet, F.; Kasprowicz, L.; Pickup, J.; Neilson, R.; Fenton, B. (2006) Microsatellite marker analysis of peach-potato aphids (Myzus persicae, Homoptera: Aphididae) from Scottish suction traps., Bulletin of Entomological Research, 96, 573-582.
- Lazarova, S.S.; Malloch, G.; Oliveira, C.M.G.; Hubschen, J.; Neilson, R. (2006) Ribosomal and mitochondrial DNA analyses of Xiphinema americanum-group populations., Journal of Nematology, 38, 404-410.
- Fenton, B.; Malloch, G.; Woodford, J.A.T.; Foster, S.P.; Anstead, J.; Denholm, I.; King, L.; Pickup, J. (2005) The attack of the clones: tracking the movement of insecticide-resistant peach-potato aphids Myzus persicae (Hemiptera: Aphididae)., Bulletin of Entomological Research, 95, 483-494.
- Oliveira, C.M.G.; Fenton, B.; Malloch, G.; Brown, D.J.F.; Neilson, R. (2005) Development of species-specific primers for the ectoparasitic nematode species Xiphinema brevicolle, X. diffusum, X. elongatum, X. ifacolum and X. longicaudatum (Nematoda: Longidoridae) based on ribosomal DNA sequences., Annals of Applied Biology, 146, 281-288.
- Malloch, G.; Fenton, B. (2005) Super-infections of Wolbachia in byturid beetles and evidence for genetic transfer between A and B super groups of Wolbachia., Molecular Ecology, 14, 627-637.
- Oliveira, C.M.G.; Ferraz, L.C.C.B.; Monteiro, A.R.; Fenton, B.; Malloch, G.; Neilson, R. (2004) Molecular and morphometric analyses of Xiphidorus species (Nematoda: Longidoridae)., Nematology, 6, 715-727.
- Ritchie, A.; Blackwell, A.; Malloch, G.; Fenton, B. (2004) Heterogeneity of ITS1 sequences in the biting midge, Culicoides impunctatus (L) suggests a population in Argyll Scotland may be genetically distinct., Genome, 47, 546-558.
- Fenton, B.; Malloch, G.; Navajas, M.; Hillier, J.; Birch, A.N.E. (2003) Clonal composition of the peach-potato aphid Myzus persicae (Homoptera: Aphididae) in France and Scotland: Comparative analysis with IGS fingerprinting and microsatellite markers., Annals of Applied Biology, 142, 255-267.
- Malloch, G.; Fenton, B.; Goodrich, M.A. (2001) Phytogeny of raspberry beetles and other Byturidae (Coleoptera)., Insect Molecular Biology, 10, 281-291.
- Malloch, G.; Fenton, B.; Butcher, R.D.J. (2000) Molecular evidence for multiple infections of a new subgroup of Wolbachia in the European raspberry beetle Byturus tomentosus., Molecular Ecology, 9, 77-90.
- Fenton, B.; Birch, A.N.E.; Malloch, G.; Lanham, P.G.; Brennan, R.M. (2000) Gall mite molecular phylogeny and its relationship to the evolution of plant host specificity., Experimental and Applied Acarology, 24, 831-861.
- Fenton, B.; Malloch, G.; Germa, F. (1998) A study of variation in rDNA ITS regions shows that two haplotypes coexist within a single aphid genome., Genome, 41, 337-345.
- Fenton, B.; Woodford, J.A.T.; Malloch, G. (1998) Analysis of clonal diversity of the peach-potato aphid, Myzus persicae (Sulzer), in Scotland, UK and evidence for the existence of a predominant clone., Molecular Ecology, 7, 1475-1487.
- Blok, V.C.; Malloch, G.; Harrower, B.E.; Phillips, M.S.; Vrain, T.C. (1998) Interspecific variation in ribosomal DNA in populations of potato cyst nematode Globodera pallida., Journal of Nematology, 30, 262-274.
- Malloch, G.; Williamson, M.; Foster, S.; Fenton, B. (2014) Analysis of grain aphid (Sitobion avenae) Populations - genetic composition and the frequency of pyrethroid resistance., Research Report 2140004/ R480, Potato Council.
- Fenton, B.; Malloch, G.; Winfield, A.; Wilson, A.; Ramsey, J.; Jander, G. (2008) Aphids join the genomics age., Annual Report of the Scottish Crop Research Institute for 2007, pp24-25.
- Birch, A.N.E.; Boag, B.; Newton, A.C.; Gordon, S.C.; Fenton, B.; Malloch, G.; Hallett, P.D.; Iannetta, P.P.M.; Stephens, S.E.; Neilson, S.; Wright, G.M.; Marshall, B.; McKenzie, B.M.; Squire, G.R.; Gill, P.; Wheatley, R.E. (2004) The SCRI LEAF Innovation Centre: Agro-ecosystem research which develops and promotes sustainable agriculture strategies and policies for Scotland, UK and Europe., Annual Report of the Scottish Crop Research Institute for 2003/2004, pp107-114.
- Fenton, B.; Birch, A.N.E.; Clyne, C.; Kasprowicz, L.; Malloch, G.; Mitchell, C.; Gordon, S.C. (2004) No sex please - we're British aphids., Annual Report of the Scottish Crop Research Institute for 2003/2004, pp164-166.
- Birch, A.N.E.; Begg, G.S.; Brennan, R.M.; Fenton, B.; Gordon, S.C.; Griffiths, B.S.; Griffiths, D.W.; Hillier, J.; Malloch, G.; Squire, G.R.; Wheatley, R.E. (2002) Developing sustainable pest management strategies for a changing future., Annual Report of the Scottish Crop Research Institute for 2001/2002, pp184-189.
- Fenton, B.; Malloch, G.L.; Brennan, R.M.; Birch, A.N.E. (2002) Evolution and adaptation of insects and mites to vegetation systems., Annual Report of the Scottish Crop Research Institute for 2000/2001, pp144-147.
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