Publications

the number of broods of the imported elm-leaf beetle.		1892	17831809
the elm-leaf beetle. galeruca xanthomelaena schr.		1892	17792206
control of the elm leaf beetle in colorado.		1973	4690261
feeding responses of adapted and non-adapted insects to the defensive properties of baccharis halimifolia l. (compositae).	trirhabda bacharidis (weber) (chrysomelidae), a univoltine, monophagous beetle is the dominant herbivore on baccharis halimifolia (compositae), a woody, perennial shrub that leafs out in early spring and retains its leaves into november. available plant biomass increases during the season but t. bacharidis feeds only during spring and early summer. during the remainder of the growing season, there are no major herbivores feeding on b. halimifolia. b. halimifolia leaves increase in toughness and ...	1982	28310500
a rapid cold-hardening process in insects.	traditionally studies of cold tolerance in insects have focused on seasonal adaptations related to overwintering that are observed after weeks or months of exposure to low temperature. in contrast, an extremely rapid cold-hardening response was observed in nonoverwintering stages that confers protection against injury due to cold shock at temperatures above the supercooling point. this response was observed in nondiapausing larvae and pharate adults of the flesh fly, sarcophaga crassipalpis, non ...	1987	17800568
evaluation of the palatability of chrysomelid larvae containing anthraquinones to birds.	chrysomelid larvae of the subfamily galerucinae, tribe galerucini, are known to contain 1,8-dihydroxylated 9,10-anthraquinones. since nonhydroxylated 9,10-anthraquinone is the active agent in several commercial products sold to protect seeds against birds, we suggested that the naturally occurring dihydroxylated anthraquinones of galerucine larvae may also act as protective devices against bird predation. tits (parus spp.) are potential predators of larvae of the tansy leaf beetle, galeruca tana ...	1994	28306931
elm leaf beetles have greatly reduced levels of gene diversity.		1995	7677733
host location in oomyzus gallerucae (hymenoptera: eulophidae), an egg parasitoid of the elm leaf beetle xanthogaleruca luteola (coleoptera: chrysomelidae).	eggs of the elm leaf beetle xanthogaleruca luteola are often heavily attacked by the chalcidoid wasp oomyzus gallerucae. we studied the chemical signals mediating interactions between the egg parasitoid, its host, and the plant ulmus campestris. olfactometer bioassays with o. gallerucae showed that volatiles of the host-plant complex attract the parasitoid. in order to determine the source of attractive volatiles within this host-plant-complex, we tested separately the effect of odours of eggs, ...	1997	28307380
allozyme gene diversities in some leaf beetles (coleoptera: chrysomelidae).	gene diversity at allozyme loci was investigated in the bean leaf beetle, ceratoma trifurcata forster; the elm leaf beetle, xanthogaleruca luteola (muller); the cottonwood leaf beetle, chrysomela scripta fabricus; the western corn rootworm, diabrotica virgifera virgifera leconte; the southern corn rootworm, also called the spotted cucumber beetle, d. undecimpunctata howardi baker; the northern corn rootworm, d. barberi smith and lawrence; and the colorado potato beetle, leptinotarsa decemlineata ...	1999	10624512
resistance of temperate chinese elms (ulmus spp.) to feeding by the adult elm leaf beetle (coleoptera: chrysomelidae).	newly acquired ulmus species from the temperate regions of china growing at the morton arboretum, lisle, il, were evaluated in laboratory bioassays for feeding preference and suitability for larvae and adults of the elm leaf beetle, pyrrhalta luteola (müller). larval and adult no-choice and adult multiple-choice feeding studies revealed that u changii, u. lanceaefolia, u. prunifolia, u. pseudopropinqua, and u. taihangshanensis were the least suitable for feeding and reproduction by the elm leaf ...	2001	11233108
analysis of volatiles induced by oviposition of elm leaf beetle xanthogaleruca luteola on ulmus minor.	egg deposition of the elm leaf beetle xanthogaleruca luteola causes the emission of volatiles from its food plant, ulmus minor. these volatiles are exploited by the egg parasitoid, oomyzus gallerucae, to locate its host. in contrast to other tritrophic systems, the release of volatiles is not induced by feeding but by egg deposition. previous investigations showed that the release is systemic and can be triggered by jasmonic acid. comparison of headspace analysis revealed similarities in the ble ...	2001	11441441
satellite dna in the elm leaf beetle, xanthogaleruca luteola (coleoptera, chrysomelidae): characterization, interpopulation analysis, and chromosome location.	in this paper the satellite dna (stdna) of the phytophagous beetle xanthogaleruca luteola is analyzed. it is organized in a tandem repeat of 149-bp-long monomers, has an at content of 59%, and presents inverted internal repeats. restriction analysis of the total dna with methylation-sensitive enzymes suggests that this repetitive dna is not methylated. analysis of the electrophoretic mobility of stdna on non-denaturing polyacrylamide gels showed that this stdna is not curved. in situ hybridizati ...	2002	12826758
evaluation of systemic insecticides as a treatment option in integrated pest management of the elm leaf beetle, xanthogaleruca luteola (müller) (coleoptera: chrysomelidae).	this study evaluates the efficacy of two systemic insecticides (imidacloprid and abamectin) in an operational setting and their suitability to be incorporated into an integrated pest management program. elm leaf beetle abundance and leaf damage were compared between treated trees and untreated control trees from 1995 through 1999. laboratory bioassays using first-instar larvae were also used to measure the toxicity of leaves collected from treated trees at varying times after treatment. trunk in ...	2003	14650518
identification of cry1i-type genes from bacillus thuringiensis strains and characterization of a novel cry1i-type gene.	a pcr-restriction fragment length polymorphism method for identification of cry1i-type genes from bacillus thuringiensis was established by designing a pair of universal primers based on the conserved regions of the genes to amplify 1,548-bp cry1i-type gene fragments. amplification products were digested with the bsp119i and bani enzymes, and four kinds of known cry1i-type genes were successfully identified. the results showed that cry1i-type genes appeared in 95 of 115 b. thuringiensis isolates ...	2003	12957903
engineered bacillus thuringiensis go33a with broad insecticidal activity against lepidopteran and coleopteran pests.	a recombinant plasmid pstk-3a containing cry3aa7 gene encoding a coleopteran-specific insecticidal protein was constructed and introduced into wild bacillus thuringiensis subsp. aizawai g03, which contained cry1aa, cry1ac, cry1ca, and cry2ab genes and was highly toxic to lepidopteran insect pests. the genetically engineered strain were named g033a. sodium dodecyl sulfate-polyacrylamide gel electrophoresis and western blot analysis demonstrated that the cry3aa7 gene was expressed normally and pro ...	2006	16572346
insecticide and antifeedant activity of different plant parts of melia azedarach on xanthogaleruca luteola.	in laboratory choice and no-choice bioassays, treatment of elm leaves with extracts obtained from unripe fruits and green or senescent leaves of melia azedarach at 1-10% concentration significantly deterred feeding by adults of the elm leaf beetle, xanthogaleruca luteola. also, in no-choice tests, adults fed on leaves treated with 2, 5 or 10% extract showed a dramatic increase in mortality rates. extracts from the different plant structures were similarly active, and starvation as a consequence ...	2006	16889905
effects of induced water stress on leaf trichome density and foliar nutrients of three elm (ulmus) species: implications for resistance to the elm leaf beetle.	seedlings of three elm species with variable susceptibility to the elm leaf beetle (pyrrhalta luteola müller) (coleoptera: chrysomelidae) were subjected to three water stress treatments (no stress, low stress, and high stress) in a greenhouse experiment. the species tested were ulmus pumila l. (siberian elm = highly susceptible), u. parvifolia jacq. (chinese elm = resistant), and u. americana l. (american elm = intermediate). the seedlings were analyzed for changes in the levels of selected host ...	2007	17540070
susceptibility of 32 elm species and hybrids (ulmus spp.) to the elm leaf beetle (coleoptera: chrysomelidae) under field conditions in arizona.	we evaluated elm leaf beetle, pyrhalta luteola (müller) (coleoptera: chrysomelidae), defoliation of 32 elm species or hybrids (taxa) established under field conditions in holbrook, az. percentage of defoliation, number of eggs, and number of larvae were estimated on randomly selected 15-cm shoot lengths annually in july, from 1996 to 2001. the following nine taxa consistently sustained 15-46% mean overall defoliation: 1) siberian elm, u. pumila l.; 2) 'dropmore' elm, u. pumila; 3) 'camperdownii' ...	2007	18232397
anatomical and nutritional factors associated with susceptibility of elms (ulmus spp.) to the elm leaf beetle (coleoptera: chrysomelidae).	a wide range of susceptibility exists across elm (ulmus) species and hybrids to the elm leaf beetle, pyrrhalta luteola (müller) (coleoptera: chrysomelidae). we evaluated various elm species, hybrids, or cultivars (taxa) growing in an experimental plantation in the city of holbrook, az, for leaf anatomical (toughness and trichome density) and nutritional (minerals and sugars) traits that may be associated with host resistance. leaf toughness and percentage of defoliation (susceptibility) were not ...	2008	18613598
coleopteran-specific and putative novel cry genes in iranian native bacillus thuringiensis collection.	the characterization of the strains containing coleopteran-specific and also putative novel cry genes in iranian native bacillus thuringiensis collection is presented. characterization was based on pcr analysis using 31 general and specific primers for cry1b, cry1i, cry3a, cry3b, cry3c, cry7a, cry8a, cry8b, cry8c, cry14, cry18, cry26, cry28, cry34 and cry35 genes, protein band patterns as well as their insecticidal activity on xanthogaleruca luteola mull. larvae. forty six isolates (65.7%) conta ...	2009	19631215
antifeedant activity of ethanolic extract from flourensia oolepis and isolation of pinocembrin as its active principle compound.	the ethanolic extract from flourensia oolepis aerial parts showed strong antifeedant activity against the pest larvae, epilachna paenulata, with an antifeedant index (ai%) of 99.1% at 100 microg/cm(2). based on chromatographic fractionation of the extract, guided by bioassays on e. paenulata, the flavanone pinocembrin (1) was isolated as the most active principle. in a choice assay, compound 1 showed strong antifeedant activity against e. paenulata, xanthogaleruca luteola and spodoptera frugiper ...	2009	19342224
cold tolerance and supercooling capacity in overwintering adults of elm leaf beetle xanthogaleruca luteola (coleoptera: chrysomelidae).	elm leaf beetle, xanthogaleruca luteola (muller) is one of the key pests of elm trees all over the world, and survives winter in reproductive diapause in sheltered locations. seasonal variation of whole body supercooling points (scps), lt50 (temperature at which 50% of the test individuals die) and survival rate after exposure to subzero temperatures were determined in field collected adults during october 2008 to may 2009 and october 2009 to may 2010. the scp of adults decreased significantly f ...	2011	22217772
an elm est database for identifying leaf beetle egg-induced defense genes.	plants can defend themselves against herbivorous insects prior to the onset of larval feeding by responding to the eggs laid on their leaves. in the european field elm (ulmus minor), egg laying by the elm leaf beetle ( xanthogaleruca luteola) activates the emission of volatiles that attract specialised egg parasitoids, which in turn kill the eggs. little is known about the transcriptional changes that insect eggs trigger in plants and how such indirect defense mechanisms are orchestrated in the ...	2012	22702658
male mate recognition via cuticular hydrocarbons facilitates sexual isolation between sympatric leaf beetle sister species.	chemical signals in insects have been documented to play an important role in mate recognition, and divergence in chemical signals can often cause sexual isolation between closely related species or populations within species. we investigated the role of cuticular hydrocarbons (chcs), short distance chemical signals, in male mate recognition between the two sympatric elm leaf beetles, pyrrhalta maculicollis and pyrrhaltaaenescens. mating experiments demonstrated that strong sexual isolation betw ...	2014	25172230
adaptation to different host plant ages facilitates insect divergence without a host shift.	host shifts and subsequent adaption to novel host plants are important drivers of speciation among phytophagous insects. however, there is considerably less evidence for host plant-mediated speciation in the absence of a host shift. here, we investigated divergence of two sympatric sister elm leaf beetles, pyrrhalta maculicollis and p. aenescens, which feed on different age classes of the elm ulmus pumila l. (seedling versus adult trees). using a field survey coupled with preference and performa ...	2015	26378220
elm leaves 'warned' by insect egg deposition reduce survival of hatching larvae by a shift in their quantitative leaf metabolite pattern.	plants may take insect eggs on their leaves as a warning of future herbivory and intensify their defence against feeding larvae. responsible agents are, however, largely unknown, and little knowledge is available on this phenomenon in perennial plants. we investigated how egg deposition affects the anti-herbivore defence of elm against the multivoltine elm leaf beetle. prior egg deposition caused changes in the quality of feeding-damaged leaves that resulted in increased larval mortality and red ...	2016	26296819
characterization of acetylcholinesterase from elm left beetle, xanthogaleruca luteola and qsar of temephos derivatives against its activity.	insect acetylcholinesterase (ache) is the principal target for organophosphate (op) and carbamate (cb) insecticides. in this research, an ache from third instar larvae of elm left beetle, xanthogaleruca luteola was purified by affinity chromatography. the enzyme was purified 75.29-fold with a total yield of 8.51%. as shown on denaturing sds-page, the molecular mass of purified ache was 70kda. the enzyme demonstrated maximum activity at ph7 and 35°c. furthermore, a series of temephos (tem) deriva ...	2017	28187825
description and phylogeny of a new microsporidium from the elm leaf beetle, xanthogaleruca luteola muller, 1766 (coleoptera: chrysomelidae).	this study describes a new genus and species of microsporidia which is a pathogen of the elm leaf beetle, xanthogaleruca luteola muller, 1776 (coleoptera: chrysomelidae). the beetles were collected from istanbul in turkey. all developmental stages are uninucleate and in direct contact with the host cell cytoplasm. giemsa-stained mature spores are oval in shape and measured 3.40 ± 0.37 μm in length and 1.63 ± 0.20 μm in width. these uninucleate spores have an isofilar polar filament with 11 turns ...	2017	27987055