Sökning: "ecological differentiation"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden ecological differentiation.

  1. 1. An investigation into trait differentiation within and between two closely related Silene species.

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Daniel Connaghan; [2017]
    Nyckelord :Silene; speciation; ecological differentiation;

    Sammanfattning : Ecological differentiation and adaptation are processes that can drive divergence and speciation. Measuring ecologically revenant traits can help to identify possible targets of natural selection that may have mediated ecological differentiation. LÄS MER

  2. 2. Finns det anpassningar beroende på födokällor hos olika ekotyper av Asellus aquaticus?

    Kandidat-uppsats, Linköpings universitet/Biologi

    Författare :Mikael Ohlsson; [2016]
    Nyckelord :Asellus aquaticus; differentiation; food source; ecotypes; growth rate; behaviour; competitiveness;

    Sammanfattning : The freshwater isopod Asellus aquaticus has been shown to exist in two different ecotypes, stonewort ecotypes and reed ecotypes. The differentiation is likely due to adaptation towards different predator regimes and possibly also other selective forces. LÄS MER

  3. 3. Genetic diversity of local maize (Zea mays L.) germplasm from eight agro-ecological zones in Mozambique

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

    Författare :Abilio Virissimo Afonso; [2013]
    Nyckelord :Genetic diversity; maize; Zea mays; germplasm; agro-ecological zone; Mozambique; Simple Sequence Repeat SSR ;

    Sammanfattning : The genetic diversity within and among 27 accessions of local maize maintained at the National Gene bank of Mozambique was studied. The accessions were originally collected from farmers’ fields in 8 of the 10 agro-ecological zones of Mozambique. Eleven SSR markers were used. A total of 84 alleles were found with an average of 7. LÄS MER

  4. 4. Lokala skillnader i konsumtion av påväxtalger och terrestra löv hos en differentierad population av Asellus aquaticus

    Kandidat-uppsats, Linköpings universitet/Linköpings universitet/Institutionen för fysik, kemi och biologiTekniska högskolan

    Författare :Emma Jansson; [2013]
    Nyckelord :Asellus aquaticus; consumption; detritus; periphyton; eco-evolution;

    Sammanfattning : That ecological and evolutionary processes can take place on the same time scale is a recent insight. Today we also know that they are directly linked to each other. In the lake Tåkern, in year 2000, there was a structural change when phytoplankton declined and submerged vegetation, mainly stoneworts began to spread. LÄS MER

  5. 5. Effects of Ethinylestradiol, EE2, exposure on Poecilia reticulta male specific genes, DMRT1 and CYP11b 

    Kandidat-uppsats, Södertörns högskola/Institutionen för livsvetenskaper

    Författare :Natalia Isabel Moran Lopez; [2011]
    Nyckelord :;

    Sammanfattning : Endocrine disrupting chemicals (EDCs) found in every day product, can either be natural or man-made and usually exists in a concerning concentration in our aquatic environment which in turn could affect teleost reproduction. EDCs exposure in fishes may result in changes in their reproductive physiology and morphology resulting in for example induction in gonopodia in female fish when exposed to androgens and in males exposed to female estrogen a reduced sperm count and skewed sex ration. LÄS MER