scholarly journals Preference for and Suitability of Selected Elms, Ulmus spp. and Their Hybrids for the Elm Leaf Beetle, (Pyrrhalta luteola Coleoptera: Chrysomelidae)

1994 ◽  
Vol 12 (4) ◽  
pp. 231-235
Author(s):  
Fredric Miller ◽  
George Ware
Keyword(s):  
Multiple Choice ◽  
Leaf Beetle ◽  
Feeding Preference ◽  
Dutch Elm Disease ◽  
Adult Longevity ◽  
Shade Trees ◽  
Breeding Programs ◽  
Elm Leaf Beetle ◽  
Choice Feeding ◽  
Species Hybrids

Abstract Selected elms Ulmus spp. and their hybrids growing at the Morton Arboretum, Lisle, IL were evaluated in the laboratory for feeding preference by the elm leaf beetle, Pyrrhalta luteola (Muller). Results from the single-choice and multiple-choice feeding studies showed that U. szechuanica was the least suitable for feeding and reproduction by the adult elm leaf beetle. The hybrids U. pumila x U. parvifolia and U. pumila x U. americana, and U. pumila (control) appeared to be highly suitable for feeding and reproduction by the adult elm leaf beetle. Adult longevity and the pre-ovipositional period appeared to be a function of suitability as adults feeding on U. szechuanica had the shortest longevity and the longest pre-ovipositional period. The converse was also true. Results from multiple-choice studies were consistent with the single-choice studies. The intermediately suitable species/hybrids of U. japonicawilsoniana x U. pumila, U. Japonica, U. macrocarpa, and U. wilsoniana show promise for further elm breeding programs. Further studies are needed to evaluate hybrid crosses of the intermediately and least preferred elms as potential sources of shade trees resistant to Dutch elm disease and not preferred by the elm leaf beetle.

scholarly journals Suitability and Feeding Preference of Selected North American, European, and Asian Elm (Ulmus spp.) Biotypes to Elm Leaf Beetle (Coleoptera: Chrysomelidae)

2002 ◽  
Vol 20 (3) ◽  
pp. 148-154
Author(s):  
Fredric Miller ◽  
George Ware
Keyword(s):  
North American ◽  
Leaf Beetle ◽  
Feeding Preference ◽  
Leaf Beetles ◽  
The North ◽  
Elm Leaf Beetle ◽  
Ovipositional Response ◽  
Valley Forge ◽  
Choice Feeding ◽  
Diploid Form

Abstract Recently introduced North American elm cultivars, simple and complex elm hybrids of European and Asian parentage, and simple Asian hybrids of U. pumila and U. japonica parentage growing at The Morton Arboretum, Lisle, IL, were evaluated in laboratory bioassays for ovipositional response, and feeding preference and suitability for larvae and adults of the elm leaf beetle, Xanthogaleruca luteola (Muller). Larval and adult no-choice and adult multiple-choice feeding studies revealed that the North American cultivars of U. americana ‘Jefferson’ and U. americana ‘Valley Forge’, U. americana (diploid form), and U. americana were the least preferred for feeding and reproduction by the elm leaf beetle. Among simple and complex European hybrids, ‘Homestead’, ‘Patriot’, and ‘Prospector’ were least preferred and least suitable for larval development, feeding, and reproduction by adult elm leaf beetles. Hybrids of ‘Frontier’, ‘Pioneer’, and ‘Regal’; the simple Asian hybrids of ‘Cathedral’ and ‘New Horizon’; and U. pumila were more highly preferred for feeding and suitable for reproduction. The least preferred and least suitable North American biotypes of U. x americana ‘Jefferson’, U. americana ‘Valley Forge’, and U. americana (diploid form), simple and complex European hybrids of ‘Homestead’, ‘Patriot’, and ‘Prospector’, show promise for use in areas where the elm leaf beetle is persistent and for future elm breeding programs.

scholarly journals Feeding and Ovipositional Responses of Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae) to Simple and Complex Asian Elm Hybrid Selections

2001 ◽  
Vol 19 (3) ◽  
pp. 128-131
Author(s):  
Fredric Miller ◽  
George Ware
Keyword(s):  
Leaf Tissue ◽  
Leaf Beetle ◽  
Adult Longevity ◽  
Adult Males ◽  
Breeding Programs ◽  
Leaf Beetles ◽  
Elm Leaf Beetle ◽  
The Mean ◽  
Ulmus Davidiana ◽  
Preovipositional Period

Abstract Nine recently developed simple and complex Asian hybrids with Ulmus davidiana, U. japonica, U. parvifolia, U. pumila, U. szechuanica and/or U. wilsoniana parentage were evaluated in no-choice laboratory bioassays for their suitability for the adult elm leaf beetle, Xanthogaleruca luteola (Müller). Suitability of each biotype was defined by the mean percentage of leaf tissue removed, the mean percentage of females ovipositing, and the mean number of eggs laid per female. Adult female beetles laid significantly more eggs on U. pumila (control) and the complex hybrid U. ‘Morton Red Tip’-Danada Charm™ indicating their greater suitability for ELB. The least suitable single and complex hybrids for adult elm leaf beetles as indicated by feeding and reproduction were U. davidiana x U. ‘ Morton’ -Accolade™ and U. szechuanica x U. japonica. Females feeding on more suitable elms oviposited 3 days earlier than females feeding on less suitable elms. Adult beetle fecundity was correlated with the length of the preovipositional period but mean percentage of females ovipositing was not correlated with length of the preovipositional period. Adult males and females lived approximately 4 days longer on the more suitable elms than on less suitable elms but adult longevity was not correlated with suitability. The percentage of leaf tissue removed by adult beetles on the different biotypes was correlated with beetle fecundity. Less suitable selections of U. davidiana x U. ‘ Morton’ -Accolade™ and U. szechuanica x U. japonica seem promising for future elm breeding programs.

scholarly journals Repellent, antifeedant and insecticidal effects of neem oil on Microtheca punctigera

2008 ◽  
Vol 51 (6) ◽  
pp. 1121-1126 ◽  
Author(s):  
Adriana Yatie Mikami ◽  
Maurício Ursi Ventura
Keyword(s):  
Multiple Choice ◽  
Feeding Preference ◽  
Biological Parameters ◽  
Wild Radish ◽  
Neem Oil ◽  
Raphanus Raphanistrum ◽  
Neem Tree ◽  
Oil Emulsion ◽  
Choice Assay ◽  
Choice Feeding

The effects of concentrations (0.00, 0.25, 0.50 and 1.00%) of the neem tree (Azadirachta indica - Meliaceae) oil emulsion on the behavioral and biological parameters of M. punctigera were investigated in the laboratory. Wild radish (Raphanus raphanistrum L.) host plant was used. Multiple and no-choice feeding preference assays were conducted which shown multiple effects. The males were repelled by the neem oil in multiple-choice assay. The adult (multiple-choice) and larvae (multiple and no-choice) feeding were deterred. The larvae mortality was higher in the neem oil treated than the control leaves. Further investigations are suggested to test neem oil in the management of the pest in the field.

Design and analysis of multiple choice feeding preference data

Oecologia ◽  
2004 ◽  
Vol 138 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Jeffrey S. Prince ◽  
W. G. LeBlanc ◽  
S. Maci�
Keyword(s):  
Multiple Choice ◽  
Feeding Preference ◽  
Preference Data ◽  
Choice Feeding

OCCURRENCE OF THE ELM LEAF BEETLE, GALERUCELLA XANTHOMELAENA (SCHR.), AT ST. CATHARINES, ONTARIO

1946 ◽  
Vol 78 (1) ◽  
pp. 22-22
Author(s):  
R. W. Sheppard
Keyword(s):  
Leaf Beetle ◽  
Dutch Elm Disease ◽  
Ulmus Americana ◽  
Elm Leaf Beetle ◽  
Large Numbers ◽  
The City

In July 11, 1945, in the city of St. Catharines, Ontario, while looking for some elm trees reported by Dutch elm disease scouts as being severely leaf-eaten, I found two white elms (Ulmus americana L.) carrying large numbers of coleopterous larvae which were at once taken to be referable to the elm leaf beetle, Galerucella xanthomelaena (Schr.)

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