4,996 results found
    1. Evolutionary Biology

    Sperm competition risk drives rapid ejaculate adjustments mediated by seminal fluid

    Michael J Bartlett et al.
    Seminal fluid harbours the as yet unknown mechanism that facilitates rapid adjustment of sperm velocity in response to changing sperm competition risk.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Competition between Tropomyosin, Fimbrin, and ADF/Cofilin drives their sorting to distinct actin filament networks

    Jenna R Christensen et al.
    Both cooperative and competitive associations of actin binding proteins with actin filaments help drive the self-organization of functionally diverse F-actin networks in fission yeast.
    1. Neuroscience

    Balancing model-based and memory-free action selection under competitive pressure

    Atsushi Kikumoto, Ulrich Mayr
    People compete by trying to outsmart their opponents as long as they win, but show random behavior, and neural signs of suppressing knowledge about opponents’ strategies, when they lose.
    1. Cell Biology
    2. Physics of Living Systems

    Cell-scale biophysical determinants of cell competition in epithelia

    Daniel Gradeci et al.
    Mechanical competition is controlled by biophysical parameters that regulate cellular homeostatic density, while biochemical competition is regulated by parameters that influence the organisation of cells in a tissue.
    1. Cell Biology

    COMP-1 promotes competitive advantage of nematode sperm

    Jody M Hansen et al.
    Nematode sperm respond to competitive environments by modulating cellular pathways involved in migration and storage to ensure their access to oocytes.
    1. Developmental Biology
    2. Genetics and Genomics

    Cell competition removes segmental aneuploid cells from Drosophila imaginal disc-derived tissues based on ribosomal protein gene dose

    Zhejun Ji et al.
    Cell competition is an important mechanism selecting against aneuploid cells.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Nerfin-1 represses transcriptional output of Hippo signaling in cell competition

    Pengfei Guo et al.
    The zinc finger protein Nerfin-1 represses the transcriptional output of Hippo signaling in cell competition by binding to the TEA DNA-binding domain of Scalloped.
    1. Ecology
    2. Evolutionary Biology

    Dynamics of venom composition across a complex life cycle

    Yaara Y Columbus-Shenkar et al.
    Different developmental stages of a venomous animal (e.g. Nematostella vectensis) with a complex life cycle produce vastly different venoms that can serve in different antagonistic interactions with other species.
    1. Ecology

    Antagonistic effects of intraspecific cooperation and interspecific competition on thermal performance

    Hsiang-Yu Tsai et al.
    By integrating theoretical and empirical approaches, the results show that linking abiotic factor and biotic interactions on the niche width will be critical for understanding species-specific responses to climate change.
    1. Neuroscience

    Constraints on neural redundancy

    Jay A Hennig et al.
    The distribution of redundant neural activity is coupled with task-relevant activity, which may limit the extent to which redundancy can be exploited by the brain for computation.

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