Sökning: "oviposition"

Visar resultat 16 - 20 av 29 uppsatser innehållade ordet oviposition.

  1. 16. Äggläggningspreferenser för honor av väddnätfjäril, Euphydryas aurinia, på området Bälsalvret, Gotland

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Lina Fransson; [2015]
    Nyckelord :väddnätfjäril; Euphydryas aurinia; beteende; reproduktion; bevarandebiologi; Gotland;

    Sammanfattning : This study aims to get a better understanding of the oviposition-behaviour of the butterfly Marsh Fritillary (Euphydryas aurinia), in the area Bälsalvret on the Island of Gotland. The study may provide helpful information to aid the conservation of the species in the area and also provide overall knowledge about the female’s preferences when it comes to choosing microhabitat and host plant for their eggs. LÄS MER

  3. 17. Odour-mediated behaviour in codling moth, Cydia pomonella : do fermentation odours affect the attraction and oviposition behaviour in codling moth?

    Magister-uppsats, SLU/Dept. of Plant Protection Biology

    Författare :Lillemor Torstensdotter; [2015]
    Nyckelord :Cydia pomonella; codling moth; fermentation; apples;

    Sammanfattning : The codling moth, Cydia pomonella is a common pest in apple orchards and can be found worldwide. Feeding by codling moth larvae can cause a substantial decrease in apple yield. Control methods comprise for example the use of pesticides, viruses and pheromones. LÄS MER

  4. 18. Effect of diet and density on larval immune response and larval and adult host-preference in Spodoptera littoralis

    Master-uppsats, SLU/Dept. of Plant Protection Biology

    Författare :Sophie Chattington; [2015]
    Nyckelord :artificial encapsulation; Egyptian cotton leafworm; immune response; innate preference hierarchy; larval density; larval development; larval memory; oviposition choice; phenoloxidase; Spodoptera littoralis; Y-tube;

    Sammanfattning : Polyphagy presents difficulties to an insect, especially in terms of host choice. The adult insect must choose from a large number of possible host plant species, something which is considered to require extensive neural capacity to process. LÄS MER

  5. 19. Effect of co-expression of Spodoptera olfactory receptors on Drosophila odour perception

    Master-uppsats, SLU/Dept. of Plant Breeding (from 130101)

    Författare :Hayder Muhammad Awais; [2014]
    Nyckelord :co-expression; Drosophila melanogaster; Spodoptera littoralis; olfaction; olfactory receptor proteins; olfactory sensory neuron;

    Sammanfattning : Like humans, other animals are also able to smell and differentiate a large number of odours with great accuracy. Chemosensory signals play a vital role in locating host plants by insects. Drosophila has a well-developed olfactory system which can differentiate between different odours and recognize food, oviposition sites and potential mates. LÄS MER

  7. 20. Movement pattern and habitat use of female grass snake (Natrix natrix) in a semi-urban environment

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Gustav Pettersson; [2014]
    Nyckelord :grass snake; adaptation; movement; habitat use; translocation; conservation;

    Sammanfattning : Rörelsemönster och habitatanvändning hos ormar är ett område där relativt lite forskning har gjorts trots tecken på minskande populationer på flera platser i världen. Snoken (Natrix natrix) är en vanligt förekommande orm i Sverige som tycks vara på nedgång, troligen på grund av en sämre tillgång på äggläggningsplatser. LÄS MER