Differential susceptibility of poplar hybrids to the aphid Chaitophorus leucomelas (Homoptera: Aphididae).

After its recent introduction to Chile, the aphid Chaitophorus leucomelas Koch is becoming a serious pest affecting commercial poplar, Populus spp., plantations. The pattern of natural infestation of C. leucomelas among poplar hybrids with different pedigrees and the aphid intrinsic rate of increase (r(m)), of C. leucomelas were assessed in the field. In most of the hybrids, aphid abundance peaked in March (late summer). Among 12 types of poplar crosses, [(P. trichocarpa Torr. & Gray x P. deltoides Bartram ex Marshall) x (P. trichocarpa x P. deltoides)] and [(P. trichocarpa x P. maximowiczii Henry) x P. maximowiczii] showed the highest and lowest aphid densities, respectively. A trend to find more aphids in branch bases was apparent. The intrinsic rate of C. leucomelas increase was higher in [(P. trichocarpa x P. deltoides) x P. deltoides] hybrids, and lower in [(P. trichocarpa x P. maximowiczii) x P. trichocarpa] hybrids. Aphid density and performance were higher in hybrids with P. deltoides parentage, whereas hybrids with P. maximowiczii parentage showed lower aphid densities and performance. Hybrids with P. nigra L. parentage, namely, [P. trichocarpa x P. nigra], also had high aphid density, but aphid performance was lower compared with hybrids with P. deltoides parentage. These results suggest that among poplar hybrids studied, susceptibility to C. leucomelas is inherited through P. deltoides, whereas resistance seems to be inherited through P. maximowiczii. Thus, P. maximowiczii hybrids are recommended for commercial or ornamental planting programs in zones where there is a high risk of aphid infestation.

[1]  Stewart Z. Merritt.  Within-plant variation in concentrations of amino acids, sugar, and sinigrin in phloem sap of black mustard,Brassica nigra (L.) Koch (Cruciferae) , 1996, Journal of Chemical Ecology.

[2]  F. Peairs,et al.  Categories of resistance at four growth stages in three wheats resistant to the Russian wheat aphid (Homoptera: Aphididae). , 2003, Journal of economic entomology.

[3]  V. Argandoña,et al.  Relationships between salicylic acid content, phenylalanine ammonia-lyase (PAL) activity, and resistance of barley to aphid infestation. , 2003, Journal of agricultural and food chemistry.

[4]  H. Niemeyer,et al.  Host plant changes produced by the aphid Sipha flava: consequences for aphid feeding behaviour and growth , 2002 .

[5]  M. Snook,et al.  Aphid Resistance and Leaf Surface Chemistry of Sugar Ester Producing Tobaccos , 2002 .

[6]  A. Shingleton,et al.  Host plant and ants influence the honeydew sugar composition of aphids , 2001 .

[7]  R. B. Hall,et al.  Cottonwood Leaf Beetle (Coleoptera: Chrysomelidae) Larval Performance on Eight Populus Clones , 2001 .

[8]  T. Whitham,et al.  Biodiversity consequences of predation and host plant hybridization on an aphid-ant mutualism , 2001 .

[9]  P. Barbosa,et al.  Pea Aphid (Homoptera: Aphididae) Fecundity, Rate of Increase, and Within-Plant Distribution Unaffected by Plant Morphology , 2000 .

[10]  G. Wilde,et al.  Life History Study of Multiple Clones of Insecticide Resistant and Susceptible Greenbug Schizaphis graminum (Homoptera: Aphididae) , 2000, Journal of economic entomology.

[11]  R. Glinwood,et al.  Change in response of Rhopalosiphum padi spring migrants to the repellent winter host component methyl salicylate , 2000 .

[12]  G. Newcombe,et al.  Defoliation patterns and genetics of insect resistance in cottonwoods , 2000 .

[13]  D. Waterhouse,et al.  The Distribution and Importance of Arthropods Associated with Agriculture and Forestry in Chile , 2000 .

[14]  N. Moran,et al.  Nutritional enhancement of host plants by aphids - a comparison of three aphid species on grasses. , 2000, Journal of insect physiology.

[15]  G. W. Robertson,et al.  Epicuticular wax composition in relation to aphid infestation and resistance in red raspberry (Rubus idaeus L.) , 1999 .

[16]  G. Newcombe,et al.  Resistance of Hybrid Plants and Animals to Herbivores, Pathogens, and Parasites , 1999 .

[17]  N. Moran,et al.  Feeding damage by Diuraphis noxia results in a nutritionally enhanced phloem diet , 1999 .

[18]  J. Pickett,et al.  Aphid responses to non-host epicuticular lipids , 1999 .

[19]  T. Whitham,et al.  THE DEVELOPMENTAL STREAM OF COTTONWOODS AFFECTS RAMET GROWTH AND RESISTANCE TO GALLING APHIDS , 1998 .

[20]  Milton P. Gordon,et al.  Uptake and Biotransformation of Trichloroethylene by Hybrid Poplars , 1997 .

[21]  T. Whitham,et al.  Competition between gall aphids and natural plant sinks: plant architecture affects resistance to galling , 1997, Oecologia.

[22]  G. Newcombe.  The specificity of fungal pathogens of Populus , 1996 .

[23]  J. J. Kruse,et al.  Effects of Hybrid Poplar (Salicaceae) Clone and Phenology on Gypsy Moth (Lepidoptera: Lymantriidae) Performance in Wisconsin , 1996 .

[24]  K. Raffa,et al.  Characterization of Hybrid Poplar Clones for Resistance to the Forest Tent Caterpillar , 1994, Forest Science.

[25]  T. Whitham,et al.  Elevated herbivory in plant hybrid zones: Chrysomela confluens, populus and phenological sinks , 1993 .

[26]  T. Whitham,et al.  The "Hybrid Bridge" Hypothesis: Host Shifting via Plant Hybrid Swarms , 1993, The American Naturalist.

[27]  K. Paige,et al.  THE EFFECTS OF HOST‐PLANT GENOTYPE, HYBRIDIZATION, AND ENVIRONMENT ON GALL‐APHID ATTACK AND SURVIVAL IN COTTONWOOD: THE IMPORTANCE OF GENETIC STUDIES AND THE UTILITY OF RFLPS , 1993, Evolution; international journal of organic evolution.

[28]  E. Hart,et al.  Feeding and oviposition preferences of adult cottonwood leaf beetles (Coleoptera : Chrysomelidae) among populus clones and leaf age classes , 1992 .

[29]  T. Whitham.  Plant Hybrid Zones as Sinks for Pests , 1989, Science.

[30]  M. Mutschler,et al.  Feeding behavior of potato aphid affected by glandular trichomes of wild tomato , 1988 .

[31]  J. Coleman,et al.  Acute Ozone Stress on Eastern Cottonwood (Populus deltoides Bartr.) and the Pest Potential of the Aphid, Chaitophorus populicola Thomas (Homoptera: Aphididae) , 1988 .

[32]  L. F. Wilson,et al.  Preference for Some Nursery-grown Hybrid Populus Trees by the Spotted Poplar Aphid and Its Suppression by Insecticidal Soaps (Homoptera: Aphididae) , 1986 .

[33]  P. White,et al.  Simple Estimation of Intrinsic Increase Rates for Aphids and Tetranychid Mites , 1977 .