Essays about: "reproductive fitness"

Showing result 1 - 5 of 27 essays containing the words reproductive fitness.

  1. 1. Rising Temperatures and the Damselfly Shrinkage

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Ernie Hacko Haglund; [2023]
    Keywords : Damselfly; Body; Size; Body Size; Temperature; Reproduction; Eggs; Egg; Egg Count; Flicksländor; Kropp; Storlek; Kroppsstorlek; Temperatur; Reproduktion; Ägg; Äggräkning; Antal Ägg;

    Abstract : Body size governs how temperature affects an organism. As temperature vary on different geographical scales, it mediates activity based on size. READ MORE

  3. 2. The relative effect of gained extra-pair paternity versus ensured within-pair paternity on male fitness in collared flycatchers, Ficedula albicollis

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Lan Ma; [2022]
    Keywords : ;

    Abstract : 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. READ MORE

  4. 3. Effects of natural warming and snow on grass phenology and fitness

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Sanne Welin; [2022]
    Keywords : Ecology; Climate change; Iceland; Grass; Festuca rubra;

    Abstract : 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. READ MORE

  5. 4. Life history and reproductive fitness variation associated with the Y chromosome in Callosobruchus maculatus

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Institutionen för ekologi och genetik

    Author : Maria Revenikioti; [2021]
    Keywords : Y chromosome; life-history traits; seed beetle Callosobruchus maculatus; reproductive fitness;

    Abstract : 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. READ MORE

  6. 5. Evaluating patterns of selection in reproductiveand digestive protein genes of seed beetles. : A comparative approach.

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Konstantinos Papachristos; [2021]
    Keywords : Seed beetles; Seminal fluid proteins; Female reproductive proteins; Digestive Proteins; Natural selection; Molecular evolution;

    Abstract : Seminal fluid proteins (SFPs) have been shown to affect the physiology,behaviour and immune responses of mated females in some species. Thisopen window for manipulation of female’s fitness allows the possibility forcomplex evolutionary dynamics between the SFPs and proteins of femalesthat would counter the effects of the former, the female reproductive proteins (FRPs). READ MORE