Essays about: "Bombus terrestris"

Showing result 1 - 5 of 11 essays containing the words Bombus terrestris.

  1. 1. Jämförelse av patogenprevalens hos vilda humlor på olika avstånd från honungsbisamhällen : och skillnader i patogenförekomst mellan olika arter av kommersiella pollinerare

    University essay from SLU/Dept. of Ecology

    Author : Julia Carlsson; [2023]
    Keywords : Apis mellifera; Bombus terrestris; vilda pollinerare; patogenprevalens;

    Abstract : Idag minskar den inhemska populationen av pollinerare till följd av klimatförändringar och urbanisering. För att bibehålla den livsviktiga pollineringen används bland annat samhällen av honungsbin (Apis mellifera), vilket antas kunna påverka de vilda humlorna negativt genom exempelvis konkurrens om resurser och patogenspridning. READ MORE

  3. 2. The relative effects of season and imported bumblebee colonies on the distribution of ten common pathogens in wild Swedish bumblebees

    University essay from Uppsala universitet/Institutionen för medicinsk cellbiologi

    Author : Félice Bernhammar; [2022]
    Keywords : Pathogen spillover; B.terrestris; Apicystis bombi; Black queen cell virus; pathogen prevalence;

    Abstract : Due to recent declines regarding pollinators, The Swedish Civil Contingencies Agency launched a project investigating possible biological threats towards wild bumblebees. This led to an extensive collection of bumblebees from areas in southern Sweden during the summer of 2018. READ MORE

  4. 3. Evaluation of bee-vectored Aureobasidium pullulans for biocontrol of grey mould in strawberry

    University essay from SLU/Dept. of Plant Protection Biology

    Author : Matilda Jützeler; [2021]
    Keywords : Aureobasidium pullulans; biocontrol; Bombus terrestris; Botrytis cinerea; entomovectoring; fungal disease; strawberry;

    Abstract : The fungal pathogen Botrytis cinerea causes grey mould in strawberry (Fragaria x ananassa) inflicting great yield loss and significant economic loss. To date, spraying with chemical fungicides is the primary management practice to control this disease. READ MORE

  5. 4. Insect pollination of faba beans, Vicia faba : the abundance and foraging behaviour of different pollinators and their effect on crop yield

    University essay from SLU/Dept. of Ecology

    Author : Ylva Johansson; [2020]
    Keywords : honeybee; Apis mellifera; bumblebees; B. pascuorum; B. hortorum; B. lucorum; B. terrestris; B. ruderatus; B. cryptarum; B. distinguendus; B. lapidarius;

    Abstract : Faba beans, Vicia faba is known as a self-pollinating crop, however significant yield increases have been found in plants visited by honeybees and bumblebees. The bees either make positive visits, entering the flower and transferring pollen between different flowers resulting in cross-pollination, or negative visits, piercing the flower to “steal” nectar or collect nectar from extrafloral nectaries. READ MORE

  6. 5. The impact of managed honeybees and commercial reared bumblebees on pathogens in wild bees

    University essay from SLU/Dept. of Ecology

    Author : Sofie Tinggren; [2020]
    Keywords : honey bee; bumblebee; diseases; commercial bees; bee intensity;

    Abstract : Bees are important beneficial insects due to their ability to pollinate our crops and vegetables, as well as being critically important for maintaining wild floral biodiversity. Bees are important from both an economic perspective and an environmental perspective, which highlights the importance of having healthy and sustainable bee populations. READ MORE