| native lygus spp. (heteroptera: miridae) damaging introduced hibiscus cannabinus in italy. | kenaf, hibiscus cannabinus l, an introduced tropical fiber crop, is attacked in central italy by the native mirid bugs lygus rugulipennis poppius and l. pratensis (l.), thus establishing novel insect-plant associations. feeding by lygus bugs damages the apical meristem, with consequent development of secondary stems and leaf tattering. in a laboratory experiment, both species caused apical meristem damage on potted kenaf. in a field experiment with caged plots, the percentage of damaged plants w ... | 2001 | 11425019 |
| characterization of the complex locus of bean encoding polygalacturonase-inhibiting proteins reveals subfunctionalization for defense against fungi and insects. | polygalacturonase-inhibiting proteins (pgips) are extracellular plant inhibitors of fungal endopolygalacturonases (pgs) that belong to the superfamily of leu-rich repeat proteins. we have characterized the full complement of pgip genes in the bean (phaseolus vulgaris) genotype bat93. this comprises four clustered members that span a 50-kb region and, based on their similarity, form two pairs (pvpgip1/pvpgip2 and pvpgip3/pvpgip4). characterization of the encoded products revealed both partial red ... | 2004 | 15299124 |
| the significance of ectomycorrhizas in chemical quality of silver birch foliage and above-ground insect herbivore performance. | we tested whether the ectomycorrhizal (ecm) infection level of roots of silver birch (betula pendula) affects performance of above-ground insect herbivores by increasing available plant biomass, by enhancing availability of nutrients, or by modifying concentration of defense compounds, i.e., phenolics, in birch foliage. insect performance was determined for a phloem-feeding generalist (lygus rugulipennis, the european tarnished plant bug), a phloem-feeding specialist (calaphis flava, the birch a ... | 2008 | 18797972 |
| the use of olfactory and visual cues in host choice by the capsid bugs lygus rugulipennis poppius and liocoris tripustulatus fabricius. | lygus rugulipennis poppius and liocoris tripustulatus fabricius (heteroptera: miridae) are pests of glasshouse cucumber and sweet pepper crops respectively. l. rugulipennis has a wide range of foodplants, but l. tripustulatus is specialised with very few food plants. we report behavioural assessments to investigate whether either species exhibits a preference for salad over wild hosts, and whether the role of olfaction and vision in response to cues from host plants can be distinguished. olfacto ... | 2012 | 23226493 |
| vicia faba-lygus rugulipennis interactions: induced plant volatiles and sex pheromone enhancement. | the profiles of volatile chemicals emitted by vicia faba plants damaged by lygus rugulipennis feeding, and by feeding plus oviposition, were shown to be quantitatively different from those released by undamaged plants. samples of volatile chemicals collected from healthy plants, plants damaged by males as a consequence of feeding, plants damaged by females as a consequence of feeding and oviposition, plants damaged by feeding with mated males still present, and plants damaged by feeding and ovip ... | 2009 | 19198949 |
| further studies on sex pheromones of female lygus and related bugs: development of effective lures and investigation of species-specificity. | mirid bugs (heteroptera: miridae) are important pests of many crops worldwide. in previous work by others and ourselves, several species of lygus bugs were shown to produce blends of three compounds, hexyl butyrate, (e)-2-hexenyl butyrate, and (e)-4-oxo-2-hexenal. these have been proposed as components of the female-produced sex pheromones, but attraction of males to synthetic lures has been difficult to demonstrate. we studied the volatiles released by females of four species: lygus rugulipenni ... | 2014 | 24390623 |
| attraction of male european tarnished plant bug, lygus rugulipennis to components of the female sex pheromone in the field. | previous work showed that females of the european tarnished plant bug, lygus rugulipennis poppius (heteroptera: miridae), produced three chemicals, hexyl butyrate, (e)-2-hexenyl butyrate, and (e)-4-oxo-2-hexenal, and that these were suspected to be components of the female sex pheromone. in field experiments, traps baited with blends of these chemicals dispensed from polyethylene vials and sachets failed to catch significant numbers of males. here, we report more recent field experiments in whic ... | 2005 | 16222779 |
| investigation of long-range female sex pheromone of the european tarnished plant bug, lygus rugulipennis: chemical, electrophysiological, and field studies. | the european tarnished plant bug, lygus rugulipennis, is an important pest of agricultural and horticultural crops throughout europe. adult male l. rugulipennis were previously shown to be attracted to traps baited with live virgin females, which suggests the females produce a sex pheromone. volatiles produced by virgin female l. rugulipennis were shown to contain three components, hexyl butyrate, (e)-2-hexenyl butyrate, and (e)-4-oxo-2-hexenal which elicited electroantennographic (eag) response ... | 2004 | 15537156 |
| does host plant influence parasitism and parasitoid species composition in lygus rugulipennis? a molecular approach. | lygus hahn plant bugs (hemiptera: miridae) are serious pests of a wide variety of economically important crops in north america. european peristenus digoneutis loan and p. relictus ruthe (hymenoptera: braconidae) are being considered for release in canada as part of a classical biological control program for lygus. the attractiveness of different host plants to european peristenus has not been addressed, but may be an important consideration prior to parasitoid release. lygus rugulipennis poppiu ... | 2008 | 18439339 |