Search for dissertations about: "quail"

Showing result 1 - 5 of 8 swedish dissertations containing the word quail.

  2. 1. Endocrine modulators and sexual differentiation in Japanese quail : With emphasis on the neuroendocrine system

    Author : Krister Halldin; Ted Ebendal; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Japanese quail; sexual behavior; endocrine disruption; sexual differentiation; estrogen; estrogen receptors; avian; Biologi; Biology; Biologi; Ecotoxicology; ekotoxikologi;

    Abstract : Chemical disruption of the endocrine system in various animal species is currently attracting considerable interest, but avian models are not yet widely used in studying endocrine disturbances. This thesis shows the occurrence of alterations in sexual behavior and reproductive organs in adult Japanese quail (Coturnix japonica) following embryonic exposure to estrogen-like chemicals. READ MORE

  4. 2. Roles of ERα and ERβ in Normal and Disrupted Sex Differentiation in Japanese Quail

    Author : Anna Mattsson; Björn Brunström; Krister Halldin; Lena Sahlin; Uppsala universitet; []
    Keywords : Toxicology; sex differentiation; estrogen receptor; sexual behavior; endocrine disruption; Japanese quail; Toxikologi;

    Abstract : Exposure to xenoestrogens during development has been shown to impair sexual differentiation in various species. The major aim of this thesis was to elucidate the respective roles of the two estrogen receptors ERα and ERβ in normal and disrupted differentiation of sex organs and copulatory behavior in the Japanese quail (Coturnix japonica). READ MORE

  5. 3. Dissecting Phenotypic Variation in Pigmentation using Forward and Reverse Genetics

    Author : Anders R Hellström; Uppsala universitet; []
    Keywords : Pigmentation; eumelanin; pheomelanin; knockout; Silver; SLC45A2; PMEL17; Sex-linked barring; CDKN2A; CDKN2B; ARF; chicken; Japanese quail; MEDICINE; MEDICIN; Molekylär genetik; Molecular Genetics;

    Abstract : Coat color and patterning phenotypes have been extensively studied as a model for advancing our understanding of the relationship between genetic and phenotypic variation. In this thesis, genes of relevance for pigment cell biology were investigated. The dissertation is divided in two parts. READ MORE

  6. 4. Genomic and Peptidomic Characterization of the Developing Avian Brain

    Author : Birger Scholz; Lennart Dencker; Eric Vilain; Uppsala universitet; []
    Keywords : Toxicology; Sex differentation; Sex determination; Sex chromosomes; Dosage Compensation; Genetic; Chickens; Coturnix; Gene Expression Profiling; Neuropeptides; Diencephalon; Toxikologi;

    Abstract : Chicken and Japanese quail are commonly used models in developmental and sex specific neuroendocrine research. There is relatively little known about the mechanisms behind their sex specific brain development, especially regarding the impact of the sex chromosomes (male: ZZ, female ZW) in relation to gonadal hormones. READ MORE

  7. 5. Environmental pollutants and the reproductive system in birds : Developmental effects of estrogenic compounds

    Author : Cecilia Berg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Avian embryo; test system; xeno-estrogen; endocrine disruption; reproductive organ differentiation; oviduct; testis; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Ecotoxicology; ekotoxikologi;

    Abstract : A number of environmental pollutants have been shown to mimick the action of the female sex hormone estrogen and are, therefore, suspected to be responsible for reproductive abnormalities seen in wildlife. Test systems which can be used in hazard and risk assessment of chemicals with estrogenic effects are consequently needed. READ MORE