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  1. Book: Special issue "Bee conservation"

    Paxton, Robert J.

    = Numéro spécial conservation des abeilles = Sonderheft Bienen-Artenschutz

    (Apidologie ; 40,3)

    2009  

    Title variant Bee conservation ; Numéro spécial conservation des abeilles ; Sonderheft Bienen-Artenschutz
    Author's details [ed.] Robert J. Paxton
    Series title Apidologie ; 40,3
    Collection
    Language English
    Size S. [193] - 416 : Ill., graph. Darst., Kt.
    Publisher EDP Sciences
    Publishing place Les Ulis u.a.
    Publishing country France
    Document type Book
    Note Zsfassung in dt. Sprache
    HBZ-ID HT016037336
    ISBN 978-2-7598-0458-0 ; 2-7598-0458-5
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    Z 2244 (40,3) available for loan (reading room) Freihandmagazin (U1)

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  2. Article ; Online: A microbiome silver bullet for honey bees.

    Paxton, Robert J

    Science (New York, N.Y.)

    2020  Volume 367, Issue 6477, Page(s) 504–506

    MeSH term(s) Animals ; Bees ; Gastrointestinal Microbiome ; Microbiota
    Language English
    Publishing date 2020-01-30
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.aba6135
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 27: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
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    Zs.MG 77: Show issues

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  3. Article ; Online: Host Barriers Limit Viral Spread in a Spillover Host: A Study of Deformed Wing Virus in the Bumblebee

    Streicher, Tabea / Brinker, Pina / Tragust, Simon / Paxton, Robert J

    Viruses

    2024  Volume 16, Issue 4

    Abstract: The transmission of pathogens from reservoir to recipient host species, termed pathogen spillover, can profoundly impact plant, animal, and public health. However, why some pathogens lead to disease emergence in a novel species while others fail to ... ...

    Abstract The transmission of pathogens from reservoir to recipient host species, termed pathogen spillover, can profoundly impact plant, animal, and public health. However, why some pathogens lead to disease emergence in a novel species while others fail to establish or do not elicit disease is often poorly understood. There is strong evidence that deformed wing virus (DWV), an (+)ssRNA virus, spills over from its reservoir host, the honeybee
    MeSH term(s) Animals ; Bees/virology ; RNA Viruses/genetics ; RNA Viruses/physiology ; RNA Viruses/pathogenicity ; Genotype ; Host-Pathogen Interactions
    Language English
    Publishing date 2024-04-15
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v16040607
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Nationwide Screening for Bee Viruses in

    Kandel, Mohamed / Paxton, Robert J / Al Naggar, Yahya

    Insects

    2023  Volume 14, Issue 2

    Abstract: Honey bees are essential for crop and wild plant pollination. However, many countries have reported high annual colony losses caused by multiple possible stressors. Diseases, particularly those caused by viruses, are a major cause of colony losses. ... ...

    Abstract Honey bees are essential for crop and wild plant pollination. However, many countries have reported high annual colony losses caused by multiple possible stressors. Diseases, particularly those caused by viruses, are a major cause of colony losses. However, little is known about the prevalence of honey bee pathogens, particularly virus prevalence, in Egyptian honey bees. To address this shortfall, we determined the prevalence of widespread bee viruses in honey bee colonies in Egypt-whether it is affected by geography, the season, or infestation with
    Language English
    Publishing date 2023-02-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects14020172
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Transcriptomic Responses Underlying the High Virulence of Black Queen Cell Virus and Sacbrood Virus following a Change in Their Mode of Transmission in Honey Bees (

    Al Naggar, Yahya / Shafiey, Hassan / Paxton, Robert J

    Viruses

    2023  Volume 15, Issue 6

    Abstract: Background: Over the last two decades, honey bees (: Methods: Through an experimental design with controlled laboratory, we investigated the effects of the modes of transmission of BQCV and SBV (feeding vs. vector-mediated via injection) alone or in ... ...

    Abstract Background: Over the last two decades, honey bees (
    Methods: Through an experimental design with controlled laboratory, we investigated the effects of the modes of transmission of BQCV and SBV (feeding vs. vector-mediated via injection) alone or in combination with chronic exposure to sublethal and field-realistic concentrations of flupyradifurone (FPF), a novel agricultural insecticide, on honey bee survival and transcription responses by using high-throughput RNA sequencing (RNA-seq) analysis.
    Results: Co-exposure to viruses via feeding (VF) or injection (VI) and FPF insecticide had no statistically significant interactive effect on their survival compared to, respectively, VF or VI treatments alone. Transcriptomic analysis revealed a distinct difference in the gene expression profiles of bees inoculated with viruses via injection (VI) and exposed to FPF insecticide (VI+FPF). The number of differentially expressed genes (DEGs) at log2 (fold-change) > 2.0 in VI bees (136 genes) or/and VI+FPF insecticide (282 genes) was very high compared to that of VF bees (8 genes) or the VF+FPF insecticide treatment (15 genes). Of these DEGs, the expression in VI and VI+FPF bees of some immune-related genes, such as those for antimicrobial peptides, Ago2, and Dicer, was induced. In short, several genes encoding odorant binding proteins, chemosensory proteins, odor receptors, honey bee venom peptides, and vitellogenin were downregulated in VI and VI+FPF bees.
    Conclusions: Given the importance of these suppressed genes in honey bees' innate immunity, eicosanoid biosynthesis, and olfactory associative function, their inhibition because of the change in the mode of infection with BQCV and SBV to vector-mediated transmission (injection into haemocoel) could explain the high virulence observed in these viruses when they were experimentally injected into hosts. These changes may help explain why other viruses, such as DWV, represent such a threat to colony survival when transmitted by varroa mites.
    MeSH term(s) Animals ; Bees/genetics ; Transcriptome ; Insecticides/pharmacology ; Virulence ; RNA Viruses/genetics ; Varroidae
    Chemical Substances Insecticides
    Language English
    Publishing date 2023-05-30
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15061284
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: A subset of wild bee species boosts the pollination of pigeon pea (Cajanus cajan: Fabaceae), an important crop plant of Cameroon

    Mazi, Sanda / Paxton, Robert J. / Osterman, Julia

    Journal of Apicultural Research. 2023 May 27, v. 62, no. 3, p. 598-606

    2023  , Page(s) 598–606

    Abstract: Bee species are thought to vary in their pollination efficiency, but they are rarely compared, particularly in the tropics. Here we determined the role in the pollination of 13 native bee species (Apis mellifera and 12 other wild bee species) when ... ...

    Abstract Bee species are thought to vary in their pollination efficiency, but they are rarely compared, particularly in the tropics. Here we determined the role in the pollination of 13 native bee species (Apis mellifera and 12 other wild bee species) when visiting pigeon pea (Cajanus cajan) flowers across two growing seasons in Cameroon. Using observations of floral visits coupled with a field experiment to quantify single-visit pollination efficiency, we found that Chalicodoma rufipes was the most efficient pollinator and most abundant flower visitor of pigeon pea. Most other flower visitors, including Apis mellifera, detracted from pigeon pea seed set. Our study highlights the importance of quantifying pollination to reveal functionally important bee species.
    Keywords Apis mellifera ; Cajanus cajan ; Megachile ; apiculture ; bees ; crops ; field experimentation ; flowers ; pigeon peas ; pollination ; pollinators ; research ; seed set ; Cameroon ; Anthophila ; ecosystem service ; efficiency ; foraging behaviour ; pigeon pea
    Language English
    Dates of publication 2023-0527
    Size p. 598-606
    Publishing place Taylor & Francis
    Document type Article ; Online
    ZDB-ID 281228-9
    ISSN 2078-6913 ; 0021-8839
    ISSN (online) 2078-6913
    ISSN 0021-8839
    DOI 10.1080/00218839.2022.2118097
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 2023: Show issues

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  7. Article ; Online: A new exposure protocol adapted for wild bees reveals species-specific impacts of the sulfoximine insecticide sulfoxaflor.

    Dewaele, Justine / Barraud, Alexandre / Hellström, Sara / Paxton, Robert J / Michez, Denis

    Ecotoxicology (London, England)

    2024  

    Abstract: Wild bees are crucial pollinators of flowering plants and concerns are rising about their decline associated with pesticide use. Interspecific variation in wild bee response to pesticide exposure is expected to be related to variation in their morphology, ...

    Abstract Wild bees are crucial pollinators of flowering plants and concerns are rising about their decline associated with pesticide use. Interspecific variation in wild bee response to pesticide exposure is expected to be related to variation in their morphology, physiology, and ecology, though there are still important knowledge gaps in its understanding. Pesticide risk assessments have largely focussed on the Western honey bee sensitivity considering it protective enough for wild bees. Recently, guidelines for Bombus terrestris and Osmia bicornis testing have been developed but are not yet implemented at a global scale in pesticide risk assessments. Here, we developed and tested a new simplified method of pesticide exposure on wild bee species collected from the field in Belgium. Enough specimens of nine species survived in a laboratory setting and were exposed to oral and topical acute doses of a sulfoximine insecticide. Our results confirm significant variability among wild bee species. We show that Osmia cornuta is more sensitive to sulfoxaflor than B. terrestris, whereas Bombus hypnorum is less sensitive. We propose hypotheses on the mechanisms explaining interspecific variations in sensitivity to pesticides. Future pesticide risk assessments of wild bees will require further refinement of protocols for their controlled housing and exposure.
    Language English
    Publishing date 2024-04-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 34042-x
    ISSN 1573-3017 ; 0963-9292
    ISSN (online) 1573-3017
    ISSN 0963-9292
    DOI 10.1007/s10646-024-02750-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Z 7663: Show issues

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  8. Article: A subset of wild bee species boosts the pollination of pigeon pea (Cajanus cajan: Fabaceae), an important crop plant of Cameroon

    Mazi, Sanda / Paxton, Robert J. / Osterman, Julia

    Journal of apicultural research

    2023  Volume 62, Issue 3, Page(s) 598

    Language English
    Document type Article
    ZDB-ID 281228-9
    ISSN 0021-8839
    Database Current Contents Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

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  9. Article ; Online: Experimental viral spillover can harm Bombus terrestris workers under field conditions

    Streicher, Tabea / Tehel, Anja / Tragust, Simon / Paxton, Robert J.

    Ecological Entomology. 2023 Feb., v. 48, no. 1 p.81-89

    2023  

    Abstract: Deformed wing virus (DWV), notorious for its virulence in the western honey bee (Apis mellifera) when vectored by the ectoparasitic mite Varroa destructor, is also widespread among wild bumble bee species, presumably through spillover from honey bees. ... ...

    Abstract Deformed wing virus (DWV), notorious for its virulence in the western honey bee (Apis mellifera) when vectored by the ectoparasitic mite Varroa destructor, is also widespread among wild bumble bee species, presumably through spillover from honey bees. Experimental studies on the virulence of DWV in Bombus spp. have provided equivocal results and have until now been confined to bumble bees under laboratory conditions. Here, we inoculated commercially reared Bombus terrestris workers with DWV‐A through feeding or injection and introduced them into experimental colonies placed in the field, thus exposing them to the environment and associated stressors. We monitored the survival of inoculated worker bumble bees and quantified their viral load at 10 days post inoculation. Bombus terrestris workers injected with DWV‐A supported high viral loads and exhibited significantly reduced median survival compared to controls. Bumble bees inoculated by feeding had low or zero detectable viral loads while their mortality did not differ from the control group. Our results demonstrate that, although DWV‐A is pathogenic for commercial B. terrestris, the risks for individual fitness from spillover of DWV‐A during foraging on shared flowers appear limited. The findings of this experiment also highlight the necessity to address the potential context‐dependence of virulence when evaluating the impact of a pathogen in an alternative host.
    Keywords Apis mellifera ; Bombus terrestris ; Deformed wing virus ; Varroa destructor ; alternative hosts ; ectoparasites ; entomology ; honey ; honey bees ; mites ; mortality ; pathogens ; viral load ; virulence
    Language English
    Dates of publication 2023-02
    Size p. 81-89.
    Publishing place Blackwell Publishing Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 196048-9
    ISSN 0307-6946
    ISSN 0307-6946
    DOI 10.1111/een.13203
    Database NAL-Catalogue (AGRICOLA)

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    Z 78/727: Show issues

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  10. Article ; Online: Experimental cross species transmission of a major viral pathogen in bees is predominantly from honeybees to bumblebees.

    Tehel, Anja / Streicher, Tabea / Tragust, Simon / Paxton, Robert J

    Proceedings. Biological sciences

    2022  Volume 289, Issue 1969, Page(s) 20212255

    Abstract: Cross-species transmission of a pathogen from a reservoir to a recipient host species, spillover, can have major impacts on biodiversity, domestic species and human health. ...

    Abstract Cross-species transmission of a pathogen from a reservoir to a recipient host species, spillover, can have major impacts on biodiversity, domestic species and human health.
    MeSH term(s) Animals ; Bees ; Genotype ; RNA Viruses/genetics ; Virulence
    Language English
    Publishing date 2022-02-16
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 209242-6
    ISSN 1471-2954 ; 0080-4649 ; 0962-8452 ; 0950-1193
    ISSN (online) 1471-2954
    ISSN 0080-4649 ; 0962-8452 ; 0950-1193
    DOI 10.1098/rspb.2021.2255
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1364: Show issues Location:
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