Bibliographies thématiques / Geocorail

Littérature scientifique sur le sujet « Geocorail »

Auteur : Grafiati

Publié le 4 mai 2023

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Articles de revues sur le sujet "Geocorail"

Malipatil, MB. « Revision of Australian Geocoris Fallén and Stylogeocoris Montandon (Heteroptera : Lygaeidae : Geocorinae) ». Invertebrate Systematics 8, n^o 2 (1994) : 299. http://dx.doi.org/10.1071/it9940299.

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The Australian geocorine genera (Geocoris Fallén, Stylogeocoris Montandon and Germalus St aring l) are redefined and keyed, and a species-level revision of the first two named genera is undertaken. All known species are redescribed and the following new species described: Geocoris woodwardi, G. victoriensis, G. asetosus, G. borealis and Stylogeocoris maculatus. Geocoris hakeae Eyles is synonymised with Stylogeocoris biroi Montandon, the type species of Stylogeocoris. Three species of Geocoris (G. capricornutus Kirkaldy, G. convivus Distant and G. elongatus Distant) are transferred to Stylogeocoris.

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Chau, Nguyen Ngoc Bao, et Le Thuy To Nhu. « Big-eged bugs Geocoris : Diets research and potential of use in prevention of a number of insect pests in Vietnam ». ENGINEERING AND TECHNOLOGY 9, n^o 1 (4 juin 2020) : 70–77. http://dx.doi.org/10.46223/hcmcoujs.tech.en.9.1.353.2019.

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Big-eyed bugs Geocoris spp. (Lygaeidae, Hemiptera) are small insects that is found in many parts of the world. They are beneficial because they eat a multitude of insect pests in agriculture. Big-eyed bugs Geocoris spp. are insects that receive research attention in Florida and elsewhere because of the benefits that this species give to plants (Mead, 2001). Big-eyed bugs reproduce many generations in a year on weeds, perennial crops, bushes. In spring the female big-eyed bugs start laying eggs on the bud, the leaves of the host plant. Understanding the biology and the role of predator Geocoris spp. in ecosystem will provide an alternative method in sustainable agriculture development. In this short review, we discuss some convenient diets for the application of mass rearing Geocoris spp.

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Cherry, Ron. « Interrelationship of Big-Eyed Bugs (Hemiptera : Lygaeidae) and Southern Chinch Bugs (Hemiptera : Lygaeidae) in Florida Lawns2 ». Journal of Entomological Science 40, n^o 4 (1 octobre 2005) : 385–89. http://dx.doi.org/10.18474/0749-8004-40.4.385.

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The southern chinch bug, Blissus insularis Barber, is the most important insect pest of St. Augustinegrass, Stenotaphrum secundatum (Walt.) Kuntze. Fifteen chinch bug infestations in St. Augustinegrass lawns in Florida were sampled by vacuuming. Additional vacuum samples were taken in 15 randomly selected St. Augustinegrass lawns. The big-eyed bug, Geocoris uliginosus Say, was the most frequent and abundant big-eyed bug found at the infestations. Data showed that big-eyed bugs (Geocoris spp.) were highly aggregated at chinch bug infestations. Furthermore, there was a significant positive correlation between numbers of chinch bugs and big-eyed bugs at chinch bug infestations showing that big-eyed bugs had a numerical predator response to increasing chinch bug populations.

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KÓBOR, PÉTER. « An overview of the big-eyed bug fauna of French Polynesia (Heteroptera : Lygaeoidea : Geocoridae) ». Zootaxa 4743, n^o 3 (26 février 2020) : 359–70. http://dx.doi.org/10.11646/zootaxa.4743.3.3.

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The representatives of the subfamily Geocorinae (Heteroptera: Lygaeoidea) distributed in French Polynesia are reviewed. Germalus ashlocki sp. nov. is described. First occurrence of genus Geocoris Fallén and a Germalus Stål species from New Caledonia are recorded. Diagnoses, keys and discussion of taxa are provided.

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Nagy, Zoltán. « First record of Geocoris pallidipennis from Hungary (Hemiptera : Geocoridae) ». Folia Entomologica Hungarica 81 (2020) : 17–20. http://dx.doi.org/10.17112/foliaenthung.2020.81.17.

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Adult individuals of Geocoris pallidipennis (Costa, 1843) were observed and collected at the end of October 2019 and 2020 in Szászvár (Baranya county), Hungary. They were found in a drainage ditch in the village. This is the first Hungarian record of the species. With 2 figures.

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SOARES, JOSÉ JANDUI, et ANTÔNIO CARLOS BUSOLI. « Efeito de inseticidas em insetos predadores em culturas de algodão ». Pesquisa Agropecuária Brasileira 35, n^o 9 (septembre 2000) : 1889–94. http://dx.doi.org/10.1590/s0100-204x2000000900023.

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Com o objetivo de verificar o efeito de inseticidas em insetos predadores em cultura de algodão (Gossypium hirsutum L.), instalaram-se, em 1993-1994, dois experimentos, um no campo, e outro, em laboratório. No experimento realizado no campo, os tratamentos foram: Fipronil 200 SC (75 g/ha de i.a.); Fipronil 800 WDG (64, 80 e 100 g/ha de i.a.); Endosulfan 350 CE (700 g/ha de i.a.); e testemunha. Em laboratório, além das formulações à base de Fipronil foi utilizado o Paration metílico 600 CE (480 g/ha de i.a.). Fipronil foi seletivo para os artrópodes predadores (Scymnus sp., Geocoris ventralis, Cycloneda sanguinea e Doru lineare) no campo, e a Cycloneda sanguinea (L.), em laboratório, e pode ser recomendado em programas de manejo integrado de pragas na cultura do algodoeiro para o controle de Alabama argillacea (Rueb.), e Anthonomus grandis Boh. Endosulfan foi seletivo em relação a Scymnus sp., Geocoris ventralis Thomazini e Doru lineare (Eschs) no campo, com uma redução dos insetos inferior a 30%, e o Paration metílico não foi seletivo para C. sanguinea em laboratório.

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Jackson, Ryan E., et Henry N. Pitre. « Influence of Roundup Ready Soybean Production Systems and Glyphosate Application on Pest and Beneficial Insects in Narrow-Row Soybean ». Journal of Entomological Science 39, n^o 1 (1 janvier 2004) : 62–70. http://dx.doi.org/10.18474/0749-8004-39.1.62.

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Roundup Ready® soybeans, Glycine max (L.) Merrill, in narrow-row planting systems were investigated in 1998 in Mississippi to evaluate the effects of the transgenic crop and glyphosate herbicide on pest and beneficial insects. Insects found in sufficient numbers for meaningful analysis included adult bean leaf beetle, Cerotoma trifurcata (Forster); adult three-cornered alfalfa hopper, Spissistilus festinus (Say); adult big-eyed bug, Geocoris punctipes (Say), and; larvae of green cloverworm, Plathypena scabra (F.), and velvetbean caterpillar, Anticarsia gemmatalis (Hübner). Populations of C. trifurcata, S. festinus, P. scabra and A. gemmatalis were not reduced in genetically altered Roundup Ready soybean, or by recommended (by label) or delayed applications of glyphosate. Numbers of G. punctipes also were not reduced in Roundup Ready soybean, but were reduced by recommended applications of glyphosate during weeks three and four following the second recommended herbicide application. Geocoris punctipes densities also were reduced at 1 and 2 wks after the first glyphosate application in plots in which the second application of glyphosate was delayed. Numbers of G. punctipes may have been indirectly reduced by glyphosate within sample weeks two and three because of variations in weed densities after treatment with the herbicide.

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Naranjo, Steven E. « Observations on Geocoris punctipes (Hemiptera : Lygaeidae) Oviposition Site Preferences ». Florida Entomologist 70, n^o 1 (mars 1987) : 173. http://dx.doi.org/10.2307/3495105.

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Rogers, D. J., et M. J. Sullivan. « GROWTH OF GEOCORIS PUNCTIPES (HEMIPTERA : LYGAEIDAE) ON ATTACHED AND DETACHED LEAVES OF PEST-RESISTANT SOYBEANS ». Journal of Entomological Science 22, n^o 3 (1 juillet 1987) : 282–85. http://dx.doi.org/10.18474/0749-8004-22.3.282.

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A field experiment using attached soybean, Glycine max (L.) Merrill, leaves showed that fresh weight gain of Geocoris punctipes (Say) (Hemiptera: Lygaeidae) nymphs between days 14 and 21 was greater on ‘Govan’ and ‘Bragg’ leaves than on leaves of PI229358. Weight gain on ‘Govan’ leaves was greater than on PI171451 leaves. In the same experiment, there were no differences in fresh weight growth of G. punctipes nymphs on detached leaves of the four genotypes.

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Henry, Thomas J. « Revision of the New World lygaeoid genus Epipolops (Heteroptera : Geocoridae : Pamphantinae : Epipolopini), with descriptions of five new species ». Canadian Entomologist 138, n^o 4 (août 2006) : 504–30. http://dx.doi.org/10.4039/n06-808.

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AbstractFive new species of the Neotropical geocorid genus Epipolops are recognized, raising to 14 the number of known species. The new species E. angelaesp. nov., E. kathrynaesp. nov., E. scudderisp. nov., E. slaterisp. nov., and E. thomasisp. nov. are described, the identity of E. mucronatus Distant is clarified, and the nine previously known species are diagnosed and redescribed. Photographs, scanning electron photomicrographs, outline illustrations of all pronota and hemelytra, and an identification key are provided to help distinguish species.

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Thèses sur le sujet "Geocorail"

Zadi, Daza Louis. « Mécanismes physico-chimiques impliqués dans la formation et l’évolution à l’abandon d’un matériau sédimentaire innovant généré en milieu marin par polarisation cathodique ». Electronic Thesis or Diss., La Rochelle, 2022. http://www.theses.fr/2022LAROS028.

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Ce travail de thèse porte sur un matériau (le Geocorail) formé par polarisation cathodique d’un treillis en acier disposé au sein d’un milieu sédimentaire marin. L’application de ce procédé est dédiée au renforcement des ouvrages côtiers dans la lutte contre le recul du trait de côte. L’objectif de cette étude est d’apporter des réponses relatives à l’influence des paramètres du procédé sur les propriétés physico-chimiques de ce matériau ainsi que l’évolution de celui-ci en condition d’abandon, c’est-à-dire lorsque la polarisation est arrêtée. Cette étude a été réalisée à travers une démarche expérimentale couplée avec des modèles numériques. Ces travaux ont été réalisés sur un matériau modèle formé en laboratoire et ont permis de mettre en évidence l’anisotropie de diffusion au sein de ce matériau dont l’épaisseur, la porosité et la masse volumique sont essentiellement contrôlées par la densité de courant et la durée de la polarisation. Ces deux derniers paramètres favorisent la formation de liant, constitué de brucite (Mg(OH)2) et d’aragonite (CaCO3), servant à l’agglomération du sédiment en place. La géométrie de ce sédiment est en outre un facteur primordial pour l’optimisation des propriétés du matériau. En ce qui concerne sa stabilité chimique en l’absence de polarisation, les analyses expérimentales et les modèles numériques ont révélé que l’aragonite se substitue à la brucite avec un rendement massique relativement faible, probablement lié à la forte diffusivité des matériaux analysés. La faible variation de la porosité et de la masse volumique (inférieur à 5% en 18 mois) rassure cependant de la stabilité du Geocorail dont les propriétés pourraient même s’améliorer avec le temps. Enfin, des modèles numériques de croissance et d’évolution de ce matériau à l’abandon ont été élaborés. Des voies d’amélioration ont également été proposées pour une meilleure prédiction de ces propriétés, voire la prédiction des propriétés mécaniques
This PhD work focused on the study of a material (Geocorail) formed by cathodic polarization applied in a marine sedimentary environment and used for the reinforcement of coastal structures in the fight against coastline recession. The objective of this study is to provide answers relative to the influence of the process parameters on the physico-chemical properties of this material as well as the evolution of the material under abandonment conditions, i.e. when the polarization is stopped. This was achieved through an experimental approach coupled with numerical models. This work was carried out on a laboratory material and its diffusion anisotropy within this material, the thickness, porosity and density of which are essentially controlled by the applied current density and the polarization time. These two parameters promote the formation of a binder, consisting of brucite (Mg(OH)2) and aragonite (CaCO3), which serves to agglomerate the sediments in place. The geometry of this sediment is also a key factor in optimizing the properties of this material. With regard to its chemical stability in the absence of polarization, experimental analyses and numerical models revealed that brucite substitutes for aragonite with a relatively low mass yield, probably linked to the high diffusivity of the studied materials. The small variation in porosity and density (less than 5% in 18 months) however ensures the stability of the Geocorail, whose properties could even improve with time. Finally, numerical models of the growth and evolution in abandon condition were developed. Some ways of improvement were also proposed for a better prediction of these properties, and even for the mechanical characterization using numerical methods

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Robinson, Jennifer J. « A comparative study of two seed bugs, Geocoris bullatus (Say) and G. discopterus Stål (Hemiptera : Lygaeidae) in the Yukon ». Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24905.

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Geocoris bullatus (Say 1831), (Henriptera: Lygaeidae) has been collected and studied across North America but the present work is the first detailed study of western North American G. discopterus Stål 1874. In fact, it has been claimed that G. discopterus is solely a species of the east. As the two species are taxonomically difficult to separate, when they were apparently discovered together at several localities in the southwestern Yukon, a detailed investigation of their systematics and distribution seemed necessary. Species status of Yukon G. bullatus and G. discopterus was established morphologically using standard taxonomic characters. Biological species status was confirmed through breeding experiments. The life cycles of Yukon G. bullatus and G. discopterus were studied and significant differences were discovered in the generation time and phenology. G. discopterus is univoltine and usually overwinters in the adult stage, while G. bullatus is bivoltine and overwinters in the egg stage. Fat body dissections revealed adult G. discopterus fat body size increased toward the end of summer. No such trend was recognized in adult G. bullatus. Total fatty acid levels were assayed for each species, and adult G. discopterus were found to contain higher quantities than G. bullatus, perhaps correlating with the overwintering strategy in G. discopterus An investigation of the habitats occupied by each species was performed through an in depth vegetation analysis. G. discopterus was found to prefer xeric sites situated on south-facing slopes and outwash plains while G. bullatus occupied disturbed mesic roadsides and wastelands. Habitat preference differences coupled with phenological differences may account for the apparent sympatry of these two Geocoris species at some Yukon localities. Comparison of the xeric habitat of G. discopterus to known glacial relict sites in the interiors of Alaska, Yukon and Siberia reveal striking similarities. Late Pleistocene pollen cores also compare favorably with these G. discopterus habitats. In view of this and the disjunct North American distribution of G. discopterus, this species is hypothesized to be a relict species from the late Pleistocene ice age.
Science, Faculty of
Zoology, Department of
Graduate

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Villanassery, Joseph Shimat. « The potential role of heteropteran predators - Geocoris punctipes (Say), G. uliginosus (Say) (geocoridae) and Orius insidiosus (Say) (anthocoridae) in warm-season turfgrass ». 2006. http://purl.galileo.usg.edu/uga%5Fetd/villanassery-joseph%5Fshimat%5F200608%5Fms.

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Puls, Karl A. « Big-eyed bugs as predators of the green peach aphid ». Thesis, 1994. http://hdl.handle.net/1957/35254.

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Livres sur le sujet "Geocorail"

Puls, Karl A. Big-eyed bugs as predators of the green peach aphid \. 1994.

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Puls, Karl A. Big-eyed bugs as predators of the green peach aphid \. 1994.

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Chapitres de livres sur le sujet "Geocorail"

Varshney, Richa. « Mirid and Geocorid Predators ». Dans Insect Predators in Pest Management, 107–32. Boca Raton : CRC Press, 2023. http://dx.doi.org/10.1201/9781003370864-4.

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Cohen, Allen C., et Robert T. Staten. « Long-Term Culturing and Quality Assessment of Predatory Big-Eyed Bugs, Geocoris Punctipes * ». Dans Applications of Genetics to Arthropods of Biological Control Significance, 121–32. CRC Press, 2018. http://dx.doi.org/10.1201/9781351069762-7.

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Actes de conférences sur le sujet "Geocorail"

DUPONT, Guillaume, Alaric ZANIBELLATO et Nicolas VERJAT. « Renforcement et conception d’ouvrages côtiers avec un matériau responsable : le Geocorail ». Dans Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2022. http://dx.doi.org/10.5150/jngcgc.2022.059.

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ZANIBELLATO, Alaric, Nicolas VERJAT, Philippe ANDREANI et Jérôme SOLESIO. « Le Geocorail : un matériau innovant pour la lutte contre l'érosion et le renforcement d'ouvrage maritime ». Dans Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2018. http://dx.doi.org/10.5150/jngcgc.2018.059.

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