Sökning: "reproductive fitness"
Visar resultat 1 - 5 av 29 uppsatser innehållade orden reproductive fitness.
1. Rising Temperatures and the Damselfly Shrinkage
Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : Body size governs how temperature affects an organism. As temperature vary on different geographical scales, it mediates activity based on size. LÄS MER
2. The relative effect of gained extra-pair paternity versus ensured within-pair paternity on male fitness in collared flycatchers, Ficedula albicollis
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Variation in a male ability to gain extra-pair paternity and maintain within-pair paternity are important sources of variation in male fitness in socially monogamous species and thus become the resource of sexual selection on male secondary sexual traits. While the maximum possible number of offspring sired within the social pair-bond is limited by the female’s clutch size, the possible number of sired extra-pair young could in theory by much higher. LÄS MER
3. Effects of natural warming and snow on grass phenology and fitness
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Organisms respond to changes in their environment using different strategies. Understanding how species deal with changes expected due to ongoing climate change is important for making accurate predictions about their effect on ecosystems. LÄS MER
4. Fekunditet hos honor av Drosophila melanogaster med en potentiell sexuellt antagonistisk gen : En fördjupande studie inom experimentell validering av en potentiell sexuellt antagonistisk gen hos Drosophila melanogaster
Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)Sammanfattning : Sexual conflicts arise when there is a difference in how females and males of a species or population achieve their maximum reproductive fitness. In intralocus sexual conflicts, alleles at a given locus are exposed to conflicting, or antagonistic, selection pressures. LÄS MER
5. Life history and reproductive fitness variation associated with the Y chromosome in Callosobruchus maculatus
Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Institutionen för ekologi och genetikSammanfattning : In the seed beetle Callosobruchus maculatus, the female is the larger sex and the male is the smaller sex. However, males that are almost as large as females can also occur, which is due to a specific Y chromosome haplotype. LÄS MER
