Sökning: "mate choice"
Visar resultat 1 - 5 av 12 uppsatser innehållade orden mate choice.
1. Color and wing size: identifying targets of sexual selection in Drosophila melanogaster
Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : This study explores the relationship between wing size, coloration, and reproductivesuccess in Drosophila melanogaster, fruit flies. Sexual selection, a key aspect ofevolutionary biology, often involves visual signaling as a means of displaying geneticinformation. LÄS MER
2. Differences in velocity between the sexes and stages of courtship in a dance fly
Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskapSammanfattning : Dance flies (Diptera: Empididae: Empidinae) are famous for their elaborate mating behaviour, which can be broken down to three distinct stages in adults: hunting, swarming, and mating. In many species, males hunt for prey that they present as nuptial gifts to recipient females in swarms, after which the pair will copulate in the air or after landing on nearby vegetation. LÄS MER
3. Assortativ parning hos sik (Coregonus lavaretus)
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : European whitefish (Coregonus lavaretus) forms reproductively isolated sub-populations with different body sizes in the lakes where northern pike (Esox lucius) exists. It has been hypothesized that the initial reproductive isolation between ecotypes arises through size-assortative mate choice or because small and large individuals arrive to the spawning grounds at different times. LÄS MER
4. Diversification of predators in multi-trophic communities: A trait-based theoretical approach
Master-uppsats, Lunds universitet/Examensarbeten i bioinformatikSammanfattning : One of the main challenges in ecology and evolutionary biology is to understand how biodiversity emerges and is maintained, given the complexity of ecological and evolutionary processes combined. Understanding how multi-trophic interactions occur from a theoretical perspective is highly relevant for our understanding of diversification in complex ecosystems. LÄS MER
5. Polyandry and genetic diversity in populations of Pholidoptera griseoaptera along an environmental gradient
Kandidat-uppsats, SLU/Dept. of EcologySammanfattning : Polyandry is a common mating pattern in different insect species and it leads to increased genetic diversity in the offspring and prevents inbreeding in populations. According to the theory of mate choice, mates should choose a partner that will increase heterozygosity in their offspring. LÄS MER