Search for dissertations about: "Leptidea"

Found 5 swedish dissertations containing the word Leptidea.

  2. 1. The evolutionary ecology of niche separation : Studies on the sympatric butterflies Leptidea sinapis and Leptidea reali

    Author : Magne Friberg; Wiklund Christer; John N. Thompson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lepidoptera; ecological character displacement; reproductive isolation; species discrimination; habitat; host plant; life history; sexual selection; female choice; Biology; Biologi; zoologisk ekologi; Animal Ecology;

    Abstract : Studies of ecology and evolution have become largely integrated, and increasing attention is paid to the role of ecology for speciation and post speciation divergence. In this thesis I have applied an in-depth approach studying the ecology of a butterfly species pair; the morphologically virtually identical sister-species, the Wood white (Leptidea sinapis) and Reál’s wood white (Leptidea reali). READ MORE

  4. 2. Speciation genetics of recently diverged species

    Author : Venkat Talla; Niclas Backström; Nicola Nadeau; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Speciation; Leptidea; Lepidoptera; chiffchaff; Cryptic species; genome-scan; Diapause; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : Species differentiation can be a consequence of evolutionary forces including natural selection and random genetic drift. Patterns of genomic differentiation vary across the tree of life. This variation seems to be dependent on, for example, differences in genomic architecture and molecular mechanisms. READ MORE

  5. 3. Female choice, voltinism and ecological pleiotropy - causes and consequences of the species divergence between Leptidea sinapis and L.reali

    Author : Magne Friberg; Stockholms universitet; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 4. The Evolution of Sex Chromosomes and Dosage Compensation in Structurally Dynamic Butterfly Genomes

    Author : Lars Höök; Niclas Backström; Elina Immonen; Beatriz Vicoso; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sex chromosome evolution; Dosage compensation; Sex-biased gene expression; Faster-Z; Lepidoptera; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : Dimorphic sex chromosomes have evolved independently throughout evolution from initially homologous autosomes. Recombination suppression between the sex chromosomes causes one sex chromosome to degenerate, which will influence evolution of sex-linked genes. READ MORE

  7. 5. Rates and patterns of genome evolution in Lepidoptera

    Author : Karin Näsvall; Niclas Backström; Simon Martin; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chromosomal rearrangements; karyotype evolution; recombination rate; Lepidoptera; genome structure; molecular evolution; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : The evolutionary consequences of genome restructuring and chromosomal rearrangements can be significant, but the underlying mechanisms are poorly understood. This thesis explores the relationships between genome restructuring, recombination, and maintenance of genetic diversity in different butterfly species. READ MORE