Bibliographies thématiques / Leptoglossus occidentali

Littérature scientifique sur le sujet « Leptoglossus occidentali »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Leptoglossus occidentali"

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Faúndez, Eduardo, et Mauricio Silvera. « Sobre la presencia de la chinche de las coníferas occidental Leptoglossus occidentalis Heidemann (Heteroptera : Coreidae) en Uruguay ». REVISTA CHILENA DE ENTOMOLOGÍA 45, no 4 (16 octobre 2019) : 549–51. http://dx.doi.org/10.35249/rche.45.4.19.07.

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van der Heyden, Torsten. « Leptoglossus occidentalis Heidemann (Heteroptera : Coreidae : Coreinae : Anisoscelini) ». REVISTA CHILENA DE ENTOMOLOGÍA 45, no 3 (16 août 2019) : 435–37. http://dx.doi.org/10.35249/rche.45.3.19.17.

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Kulijer, Dejan. « LEPTOGLOSSUS OCCIDENTALIS (HETEROPTERA : COREIDAE) AND HARMONIA AXYRIDIS (COLEOPTERA : COCCINELLIDAE), TWO NEW INVASIVE ALIEN SPECIES FOR INSECT FAUNA OF MACEDONIA ». Ecologica Montenegrina 5 (18 janvier 2016) : 22–25. http://dx.doi.org/10.37828/em.2016.5.3.

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Garcete-Barrett, Bolívar R., Sergio D. Rios et Sergio Galeano. « First report of the western conifer seed bug, Leptoglossus occidentalis Heidemann, 1910 (Hemiptera, Coreidae) in Paraguay ». Paraquaria Natural 8, no 2 (15 octobre 2021) : 12–14. http://dx.doi.org/10.32525/paraquarianat.2020.(8):12.14.

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Strong, Ward B., Sarah L. Bates et Michael U. Stoehr. « Feeding by Leptoglossus occidentalis (Hemiptera : Coreidae) reduces seed set in lodgepole pine (Pinaceae) ». Canadian Entomologist 133, no 6 (décembre 2001) : 857–65. http://dx.doi.org/10.4039/ent133857-6.

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AbstractLow seed set is a serious problem in seed orchards of lodgepole pine (Pinus contorta var. latifolia Engelmann) in the southern interior of British Columbia. We tested the hypothesis that Leptoglossus occidentalis Heidemann is responsible for the low seed set. Cones enclosed in insect exclusion bags as part of a pollination experiment produced significantly more filled seeds per cone than cones that were not bagged. In a separate bagging experiment, cones that were enclosed with a L. occidentalis female and her progeny produced only about one filled seed per cone, compared with about 28 seeds in bagged control cones. Changes in microclimate associated with the use of bags did not appear to be responsible for the observed increase in seed set in bagged cones. Leptoglossus occidentalis was also excluded from trees using the insecticide fenvalerate. Cones on fenvalerate-treated trees produced > 11 filled seeds per cone, whereas water-treated (control) cones produced < 1.7 filled seeds. These data suggest that L. occidentalis should be considered a serious pest in lodgepole pine seed orchards.
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Kalashian, M. Yu, T. L. Ghrejyan et G. H. Karagyan. « FIRST FINDING OF WESTERN CONIFER SEED BUG LEPTOGLOSSUS OCCIDENTALIS HEID. (HETEROPTERA, COREIDAE) IN ARMENIA ». Russian Journal of Biological Invasions 14, no 2 (11 juin 2021) : 52–55. http://dx.doi.org/10.35885/1996-1499-2021-14-2-52-55.

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Data on the first registration of conifer seed bug Leptoglossus occidentalis in Armenia are presented. Penetration of the species from Georgia due to self-dependent expansion or unintentional delivery is presumed.
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Lait, Cameron G., Sarah L. Bates, Karen K. Morrissette, John H. Borden et Allison R. Kermode. « Biochemical assays for identifying seeds of lodgepole pine and other conifers fed on by Leptoglossus occidentalis Heidemann (Hemiptera : Coreidae) ». Canadian Journal of Botany 79, no 11 (1 novembre 2001) : 1349–57. http://dx.doi.org/10.1139/b01-119.

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Radiography is a valuable tool for assessing quality of conifer seeds, but it cannot differentiate between aborted seeds and seeds that have been emptied by western conifer seed bug (Leptoglossus occidentalis Heidemann) feeding. We tested three biochemical marker-based assays that were developed to identify L. occidentalis damage to seeds of Douglas-fir, Pseudostuga menziesii (Mirb.) Franco, for their use in lodgepole pine, Pinus contorta var. latifolia Engelmann. The three assays included measurement of storage protein reserve depletion, immunodetection of fragments of insoluble (crystalloid) storage proteins, and immunodetection of L. occidentalis salivary proteins. Aborted seeds contained significantly less soluble and insoluble protein than seeds that were fed on by L. occidentalis. Polyclonal antibodies raised against 11S globulin crystalloid proteins or L. occidentalis salivary gland extracts only immunoreacted with proteins in seeds exposed to L. occidentalis feeding. In a single-blind test, antibody raised against salivary-gland extracts correctly distinguished between undamaged full seeds, unfilled aborted seeds, and seeds fed on by L. occidentalis. Immunodetection of L. occidentalis salivary proteins was also performed on seeds of Abies amabilis Dougl. ex J. Forbes, Tsuga heterophylla (Raf.) Sarg., Picea sitchensis Bong (Carr.), Pinus ponderosa Lawson, and Pinus monticola Dougl. ex D. Don. For all species, immunoreactive polypeptides were only detected in seeds fed on by L. occidentalis. These biochemical marker-based techniques could help researchers and seed orchard managers estimate seed losses caused by L. occidentalis in commercial seed orchards and natural forest stands.Key words: Leptoglossus occidentalis, saliva, biochemical markers, polyclonal antibody, immunodetection, Pinus contorta.
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GOMEZ, Cecilia A. « New records of Leptoglossus occidentalis Heidemann (Hemiptera : Coreidae) in Argentine Patagonia ». Revista de la Sociedad Entomológica Argentina 80, no 04 (30 décembre 2021) : 129–32. http://dx.doi.org/10.25085/rsea.800408.

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New records of Leptoglossus occidentalis Heidemann from Andean region is given, becoming the first occurrence within the province of Chubut. The specimens were collected in different environments of urban and periurban areas -both domiciliary and peridomiciliary-, from Esquel, Trevelin and Aldea Escolar. This report extends its southern distribution area to the parallel 43°S.
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Petrakis, P. V. « First record of Leptoglossus occidentalis (Heteroptera : Coreidae) in Greece ». ENTOMOLOGIA HELLENICA 20, no 2 (1 juin 2017) : 83. http://dx.doi.org/10.12681/eh.11512.

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The Nearctic coreid Leptoglossus occidentalis Heidemann 1910 (Hemiptera: Coreidae) known as the Western Conifer Seed Bug, is recorded for the first time in Greece. This highly dispersible species is well established in Europe and was collected by the authors in various areas of continental Greece (Central Evia, Attica and North Peloponnisos), suggesting a wide distribution in this country.
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Campbell, Bruce C., et Patrick J. Shea. « A SIMPLE STAINING TECHNIQUE FOR ASSESSING FEEDING DAMAGE BY LEPTOGLOSSUS OCCIDENTALIS HEIDEMANN (HEMIPTERA : COREIDAE) ON CONES ». Canadian Entomologist 122, no 5 (octobre 1990) : 963–68. http://dx.doi.org/10.4039/ent122963-9.

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AbstractPectinmethylesterase (PME) activity was found in the salivary glands of nymphs and adults of a leaf-footed bug, Leptoglossus occidentalis Heidemann. Puncture wounds in cone scales resulting from PME activity in the saliva of these bugs were seen by staining with a 0.05% aqueous solution of ruthenium red. This staining technique can be used to estimate feeding damage by L. occidentalis on cones of western white pine (Pinus monticola Dougl.), sugar pine (P. lambertiana Dougl.), and Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco).
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Thèses sur le sujet "Leptoglossus occidentali"

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Pimpão, Miguel Lourenço Cristovão. « Leptoglossus occidentalis : bioecologia e previsão de impacte económico em Portugal ». Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/6806.

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Mestrado em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia
Stone Pine Pinus pinea is one of the most important forest species in Portuguese forestry. The species generates relevant economic benefits, particularly through the production of cones (pinion). An increasing incidence of pests and diseases observed affecting the cones in the latest years, alerted for the need of research on these organisms, as well its interactions with the stone pine reproductive phenology. Through the analysis of pine cones collected in the five main districts at national level, high incidence of three biotic agents were found: Diplodia pinea (fungus), Pissodes validirostris (Coleoptera) and Dioryctria mendacella (Lepidoptera). In 2010 Leptoglossus occidentalis was detected for the first time in Portugal, a sucking insect that feeds on seeds of various species of conifers and can seriously affect the production of Stone Pine pinions. In the field we have conducted observations and several individuals were collect. The bugs were then successfully reared in laboratory conditions. Phenological observations on the reproductive biology of the Stone Pine were made in Coruche Clonal Park and Santa Susana (Sintra) and the reproductive structures were described along its developmental phases. The reproductive structures of P. pinea were further analysed using histological techniques
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Farinha, Ana Cristina Oliveira. « Impact and ecological adaptation of Leptoglossus occidentalis (Hemiptera, Coreidae) in Pinus pinea ». Doctoral thesis, ISA/UL, 2019. http://hdl.handle.net/10400.5/18324.

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Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia / UL
Leptoglossus occidentalis Heidemann (Heteroptera: Coreidae) is an invasive pest seriously damaging conifer seeds. Native from North America, the insect was first detected in Europe in 1999, and recorded in Portugal in 2010. Both nymphs and adults feed on seeds of several conifer species. Bug impact on seed production of Stone pine, Pinus pinea, is of major concern in the Mediterranean Basin countries because cone production and seed yield have decreased during the last years quite simultaneously to the records of L. occidentalis. Thus, the insect has been considered the most plausible cause of this decrease. However, there was still a substantial lack of knowledge about the effective impact of bugs and their ecological adaptations on Stone pine. My main goal was to add valuable and pertinent knowledge to understand the interactions between seed bugs and Stone pine. At first, a careful revision of all the literature available about Leptoglossus occidentalis was carried out, together with discussions with other European researchers working on this pest, in order to define the PhD aims. The PhD plan was then divided into three main issues. I first characterized and measured the importance of bug damage on seeds of Stone pine. In a second part, I investigated the ecological interactions between invasive bugs and Stone pine cones and seeds. Bug host preference was tested between Stone pine and the other two main native pine species growing in southern Europe (P. pinaster and P. halepensis), and cues possibly underlying such preferences were suggested. I also evaluated the impact of the bug in Stone pine seed orchards under two different management strategies. In a third part, I suggested possible invasion routes of L. occidentalis in the Iberian Peninsula, using genetic data and field records
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Blatt, Suzanne Elizabeth. « Host selection, impact and chemical ecology of the western conifer seed bug, Leptoglossus occidentalis, Heidemann (Hemiptera : Coreidae) ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq24294.pdf.

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Lesieur, Vincent. « Invasion de la punaise américaine Leptoglossus occidentalis en Europe : une contribution à la compréhension des invasions fulgurantes ». Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2045/document.

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Les dernières décennies représentent un tournant majeur concernant les invasions biologiques avec une augmentation sans précédent de leur rythme et de leur ampleur, en lien direct avec les activités humaines, en particulier la mondialisation. Certains invasifs se propagent à une vitesse très rapide dans leur nouveau milieu. L’invasion européenne de la punaise Leptoglossus occidentalis, illustre parfaitement ce phénomène et offre un modèle d’étude particulièrement intéressant. Cette thèse a pour but de tester des hypothèses permettant d’expliquer la rapidité de cette invasion. Pour répondre à cet objectif, nous avons choisi d’utiliser une approche pluridisciplinaire combinant des études de génétique des populations (natives et introduites) à des études de biologie et d’écologie des populations invasives. Grâce à l’utilisation de marqueurs moléculaires et de méthodes Bayésiennes (ABC), nous démontrons que l’invasion en Europe suit un scénario " tête de pont ", au sens où la population invasive de l’Est de l’Amérique du Nord a servi de source pour l’invasion européenne. Nos résultats confirment les soupçons d’introductions multiples dans des zones géographiquement déconnectées. En outre, l’étude de génétique des populations, associée aux mesures expérimentales des capacités de vol, indique que les capacités intrinsèques de dispersion de cette espèce sont particulièrement élevées. Les conditions rencontrées en Europe par les populations introduites ne sont pas un frein à l’invasion. L’espèce s’accommode parfaitement des nouvelles essences de conifères rencontrées sur le continent. La polyphagie observée dans la zone native est confirmée dans la zone d’introduction européenne, constituant un atout pour l’établissement des populations. De plus, cette étude révèle les risques écologiques que cette espèce représente pour la flore native européenne. Les dégâts occasionnés semblent s’additionner à ceux des ravageurs natifs, diminuant ainsi le potentiel de régénération naturelle. L’ensemble de ces résultats constitue une contribution à la connaissance des mécanismes sous-tendant les invasions biologiques, notamment sur la rapidité de propagation de certains invasifs, et met l’accent sur des phénomènes sous-estimés il y a encore peu de temps comme le scénario d’invasion " tête de pont "
During the last decades, biological invasions were observed to increase exponentially, at an unprecedented rate and magnitude, in direct relation with the human activities, especially globalization. In this context, some invasive species spread very quickly in the area of introduction. The European invasion of Leptoglossus occidentalis is a good example of this phenomenon. This study aimed at testing some hypotheses to explain the rapidity of this invasion. To reach this goal, we used a multidisciplinary approach combining population genetics (analyzing samples from native and invaded areas) with a study of biological and ecological characteristics of the invasive populations. Through the use of molecular markers and Bayesian methods (ABC), we confirmed previous suspicions and demonstrated that the European invasion proceeded from multiple introductions in distant geographic areas. Our results also indicated that a primarily invaded area of Eastern North America acted as a bridgehead for the invasion in Europe. Moreover, population genetics, combined with an experimental measurement of the bug flight capabilities using flight mills, revealed that the intrinsic capacities of dispersion of this species are particularly high. The environmental conditions of the newly invaded areas in Europe did not constitute a barrier to the invasion of L. occidentalis. Its high degree of polyphagy was confirmed on European conifers, quite all species being susceptible to be exploited, thus favoring population establishment. . Furthermore, this study highlights the ecological threat represented by this insect which can affect the native flora in Europe. Actually, bug damage which can be important, seems to be additive to those of native insects exploiting cone and seed resources, thus decreasing the potential of natural regeneration. This work contributes to improve knowledge on biological invasions, especially to understand the reasons underlying the rapid spread observed in some invasive species, and highlights phenomenon underestimated until recently such as the Bridgehead scenario
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Bates, Sarah L. « Impact of feeding by the western conifer seed bug, Leptoglossus occidentalis (Heidemann) (Hemiptera : Coreidae), on yield, seed storage reserves and seedling vigour in Douglas-fir ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ51294.pdf.

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BRACALINI, MATTEO. « Understanding Alien Pests : the Challenge of Complementary Research on Dryocosmus kuriphilus and Leptoglossus occidentalis in Italy ». Doctoral thesis, 2015. http://hdl.handle.net/2158/957158.

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The results presented in this dissertation allow to better understand the outbreak dynamics of the ACGW, as well as the importance of different chestnut cultivar susceptibility. Furthermore, studying the role of native parasitoids is crucial to assess the impact of T. sinensis on endemic ACGW natural enemies once the exotic parasitoid colonizes these areas, either naturally or by future introductions. As regards the WCSB two highly specific DNA-based diagnostic protocols were devised, showing a promising sensitivity in the detection of WCSB biological traces. In addition, the potential of HRM analysis for insect genotyping was highlighted.
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MALTESE, Matteo. « STUDI SU LEPTOGLOSSUS OCCIDENTALIS HEIDEMANN, CIMICE AMERICANA DEI SEMI DELLE CONIFERE, RECENTEMENTE INTRODOTTA IN SICILIA ». Doctoral thesis, 2011. http://hdl.handle.net/10447/95146.

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Actes de conférences sur le sujet "Leptoglossus occidentali"

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Auger-Rozenberg, Marie-Anne. « Western conifer seed bug,Leptoglossus occidentalis (Hemiptera : Coreidae) ». Dans 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.92730.

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Maltese, M., V. Caleca et a. Carapezza. « Primi reperti in Sicilia su diffusione e biologia di Leptoglossus occidentalis Heidemann (Heteroptera : Coreidae), cimice americana dei semi delle conifere ». Dans Terzo Congresso Nazionale di Selvicoltura. Accademia Italiana di Scienze Forestali, 2009. http://dx.doi.org/10.4129/cns2008.201.

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