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Wyszukujesz frazę "Keszthelyi, S." wg kryterium: Autor

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    Tytuł:
    The influence of the North Atlantic Oscillation on the potential distribution areas of Bursaphelencus xylophilus in Europe based on climatological reanalysis data
    Autorzy:
    Somfalvi-Toth, K.
    Keszthelyi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082798.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Bursaphelencus xylophilus
    distribution
    ECMWF ERA5 reanalysis dataset
    NAO
    pine wood nematode
    temperature
    Opis:
    Pine wood nematode (Bursaphelenchus xylophilus) (Aphelenchida: Parasitaphelencidae) is one of the most harmful agents in coniferous forests. The most important vectors of pine wood nematode are considered to be some Monochamus species (Col.: Cerambycidae), which had been forest insects with secondary importance before the appearance of B. xy- lophilus. However, the continuous spreading of the nematode has changed this status and necessitated detailed biological and climatological investigation of the main European vec- tor, Monochamus galloprovincialis. The potential distribution area of M. galloprovincialis involves those areas where the risk of the appearance of pine wood nematode B. xylophilus is significant. The main objective of our analysis was to obtain information about the in- fluencing effects of North Atlantic Oscillation (NAO) on the potential European range of B. xylophilus and its vector species M. galloprovincialis based on the connection between the mean temperature of July in Europe, the distribution of day-degrees of the vector and the NAO index. Our assessment was based on fundamental biological constants of the nematode and the cerambycid pest as well as the ECMWF ERA5 Global Atmospheric Rea- nalysis dataset. Our hypothesis was built on the fact that the monthly mean temperature had to exceed 20°C in the interest of an efficient expansion of the nematode. In addition, the threshold temperature of the vector involved in the calculations was 12.17°C, while the accumulated day-degree (DD) had to exceed the annual and biennial 370.57°DD for univoltine and semivoltine development, respectively. Our finding that a connection could be found between a mean temperature in July above 20°C and NAO as well as between the accumulated day-degrees and NAO can be the basis for further investigations for a reliable method to forecast the expansion of pine wood nematode and its vector species in a given year.
    Źródło:
    Journal of Plant Protection Research; 2020, 60, 2; 215-219
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Light-Trap Catch of Scarce Bordered Straw (Helicoverpa armigera Hübner) Depending on the Sunspot Numbers between Years 1993 and 2011
    Autorzy:
    Nowinszky, L.
    Puskás, J.
    Kiss, M.
    Keszthelyi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1163578.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Helicoverpa armigera
    light trapping
    sunspots
    Opis:
    The study examined the light-trap catch of the Scarce Bordered Straw (Helicoverpa armigera Hübner) (Lepidoptera, Noctuidae) depending on the sunspot numbers. The catching data of examined species were taken from the light-trap registers of the Hungarian Light-trap Network. During the years between 1993 and 2011, 25,531 moths were caught by the 36 light-traps. Our results show that there is low Sun’s activity (the number of sunspots is between 0 and 30); there is no verifiable effect on the efficiency of light trapping of Scarce Bordered Straw. However, in other years, when the number of sunspots is between 30 and 100 and when it is higher than 100, high sunspot numbers cause an increase in the catch.
    Źródło:
    World Scientific News; 2018, 109; 263-266
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nutrient content restructuring and CT-measured density, volume attritions on damaged beans caused by Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae)
    Autorzy:
    Keszthelyi, S.
    Egri, H.B.
    Horvath, D.
    Csoka, A.
    Kovacs, G.
    Donko, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/65538.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    leguminous plant
    plant product
    nutrient content
    bean
    pest
    risk
    computer tomography
    Acanthoscelides obtectus
    Coleoptera
    Chrysomelidae
    density
    storage
    Opis:
    Leguminous plant products have great nutritional and economic importance in the European Union, which is reflected by its protein policy. These harvested yields are risked by stored product pests, such as Acanthoscelides obtectus Say, which can cause up to 50–60% loss in stored bean items. The bean weevil causes both quantitative and qualitative damage to seeds. We aimed to map the qualitative damage of this devastating pest, which deteriorates the nutritional content of bean kernels. Furthermore, our purpose was to determine accurately the decrease in the volume and density alteration in beans caused by this important stored product pest using CT-assisted imaging analysis. Our results showed that the nutritional arrangement in damaged beans was caused by A. obtectus. The measured nutrient content increment in damaged samples can be explained by the presence of extraneous organic material which originates from perished specimens of the bruchin pest. This is a negative phenomenon in bean items used as forage, because of the loss of valuable proteins and rancidity in herbal oils. Weight loss triggered by developing larvae was 49.42% in examined bean items. The use of 3D technologies has greatly improved and facilitated the detailed investigation of injured seeds. The density (75,834 HU; 41.93%) and the volume (296.162 mm3; 26.21%) values measured by CT of the examined samples were significantly decreased. The decreasing of tissue density in damaged beans can be accounted for by the consumption of starch present at a high ratio and that of the dense reserve components in the cotyledons.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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