Essays about: "morphological identification"

Showing result 1 - 5 of 24 essays containing the words morphological identification.

  1. 1. Monitoring marine alien and invasive species. A comparison between the traditional method (eRAS) and DNA-based identification of species.

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Josefin Holm; [2023-08-22]
    Keywords : ;

    Abstract : There is a major concern with the uncontrolled spreading of alien and invasive species, caused by an increase in travelling by boat globally. These are dispersed via ballast water, by fouling on ships and in fishing gear. READ MORE

  3. 2. A comparative study of the mosses Ptychostomum pseudotriquetrum and P. bimum : Investigating morphological characters, habitat, and distribution across northern Sweden

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Isabell Sjölander; [2023]
    Keywords : Ptychostomum pseudotriquetrum; Ptychostomum bimum; Crypsis; Leaf decurrency; northern Sweden;

    Abstract : The mosses Ptychostomum pseudotriquetrum and P. bimum (syn: Bryum, Bryophyta) are difficult to distinguish from each other, as they appear morphologically identical besides their difference in sexual condition. Because of their similarities, some researchers treat both as P. pseudotriquetrum, while others treat them as two distinct species. READ MORE

  4. 3. Parapeytoia yunnanensis: The organism that connects the upper stem-group euarthropods

    University essay from Uppsala universitet/Paleobiologi

    Author : Sebastian Axel Cockfield Larsson; [2023]
    Keywords : ;

    Abstract : The study of euarthropod evolution in the Cambrian is challenging due to controversies surrounding the identification of various anatomical features. Radiodontans are supported to be a monophyletic group to the lower stem of euarthropods. READ MORE

  5. 4. Studier av genetisk bakgrund till nedsatt spermiekvalitet hos berner sennenhundar

    University essay from SLU/Dept. of Clinical Sciences

    Author : Martin Kläschen; [2022]
    Keywords : Berner sennen; fertilitet; spermiekvalitet; spermiemorfologi; kandidatgener; DNAH1; ARCM2; RNA;

    Abstract : Syftet med denna studie var att undersöka möjliga ärftliga faktorer till nedsatt spermiekvalitet hos berner sennenhundar i Sverige. I tidigare morfologiska studier av sperma från berner sennenhundar konstaterades att de har ett förhöjt antal svansdefekter jämfört med normalvariation för hundar. READ MORE

  6. 5. Spruce associated Porodaedalea species distribution in Sweden

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Monica Guilera Recoder; [2022]
    Keywords : Fungi; Genetics; Porodaedalea;

    Abstract : Wood-inhabiting fungi have very important roles in the ecosystem in the degradation of dead wood by acting respectively as parasites and saprotrophs in boreal forests. Porodaedalea chrysoloma is a wood-decay parasite poroid fungi that is considered a key species in the old growth boreal forests. Due to forestry its habitat is declining. READ MORE