Essays about: "infestation"

Showing result 1 - 5 of 45 essays containing the word infestation.

  1. 1. Urea’s ability to break the life cycle of Nematodirus spp. in situ : a field study on sheep in New Zealand

    University essay from SLU/Dept. of Clinical Sciences

    Author : Carolina Falkman; [2020]
    Keywords : Nematodirus; Strongyles; sheep; nematodes; urea; nitrogen; anthelmintic; resistance;

    Abstract : Nematodirus spp., along with other gastrointestinal nematodes, are a common cause of disease among sheep and remains a major animal health concern, and cause of reduced productivity for sheep farmers around the world. READ MORE

  2. 2. Epidemiological aspects of infectious salmon anemia

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Karl Mård; [2019]
    Keywords : Infektiös laxanemi; ILA; epidemiologi;

    Abstract : Infectious salmon anemia is an orthomyxyviral disease posing a serious challenge to the aquaculture of atlantic salmon (Salmo salar). The virus causes severe disease resulting in high moratlity and significant costs to the industry. READ MORE

  3. 3. Effects of within-field and landscape factors on Dasineura brassicae in winter oilseed rape cultivations in Skåne, southern Sweden : a field survey with a special approach to pesticide-free control zones

    University essay from SLU/Department of Plant Protection Biology

    Author : Emma Johansson; [2019]
    Keywords : Dasineura brassicae; brassica pod midge; Ceutorhynchus obstrictus; cabbage seedpod weevil; winter oilseed rape; rapeseed crop damages; pesticide-free control zones; withinfield factors; landscape factors;

    Abstract : Winter oilseed rape (Brassica napus) is the most common oilseed crop grown in the province of Skåne in southern Sweden, where this study was performed. B. napus is often associated with various insect pests. This study regards two of these; the cabbage seed weevil (Ceutorhynchus obstrictus) and the brassica pod midge (Dasineura brassicae). READ MORE

  4. 4. Bee wax moth in Embu county, Kenya, the intruder in the hives : a study of Galleria mellonella and Achroia grisella

    University essay from SLU/Dept. of Ecology

    Author : Sanna Bergqvist; [2019]
    Keywords : bee wax moth; African bees; prevention; control;

    Abstract : The bee wax moth is a problematic pest that has been a problem to Kenyan bee farmers for some time now. This study has tried to answer if the observed factors affected the infestation rate of the pest. READ MORE

  5. 5. Tolerance to virus infections could explain increased winter colony survival observed in Varroa destructor-resistant honey bees

    University essay from Uppsala universitet/Institutionen för kvinnors och barns hälsa

    Author : Sofia Bouro Wallgren; [2018]
    Keywords : mite-resistance; mite-infestation; virus dynamics; tolerance mechanisms; Apis mellifera;

    Abstract : Honey bee colonies all over Europe and North America have been declining dramatically for over three decades and is continuing to do so which is causing significant threats to economy, agriculture and ecosystems. The main reason behind the declining colonies is an ectoparasitic mite known as Varroa destructor and viruses vectored by the mite. READ MORE