4,519 results found
    1. Ecology

    Extinction risk and conservation of the world’s sharks and rays

    Nicholas K Dulvy et al.
    One-quarter of the Chondrichthyes have an elevated risk of extinction, mainly as a result of overfishing.
    1. Ecology

    Climate-driven deoxygenation elevates fishing vulnerability for the ocean's widest ranging shark

    Marisa Vedor et al.
    Habitats of satellite-tracked blue sharks were shifted surfaceward by an oxygen minimum zone (OMZ) at depth thereby increasing their susceptibility to capture by longline fishing focused above the OMZ.
    1. Neuroscience

    Spatiotemporal patterns of neocortical activity around hippocampal sharp-wave ripples

    J Karimi Abadchi et al.
    The hippocampus and neocortex engage in waves of mutual excitation wherein a sharp wave-ripple may occur at any time before, during or after the peak of the hippocampal-neocortical activation.
    1. Neuroscience

    Shank is a dose-dependent regulator of Cav1 calcium current and CREB target expression

    Edward Pym et al.
    Changes in Shank gene dosage alter voltage-activated calcium current and calcium-activated gene expression in a manner that parallels the effects of human Shank copy number variation on psychiatric disease risk.
    1. Microbiology and Infectious Disease

    Cohabiting family members share microbiota with one another and with their dogs

    Se Jin Song et al.
    Research on humans and dogs reveals that the communities of microorganisms found on the skin, on the tongue and in the intestine are affected differently by age and cohabitation.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Dissecting the sharp response of a canonical developmental enhancer reveals multiple sources of cooperativity

    Jeehae Park et al.
    The sharp expression pattern driven by a classic, simple animal enhancer is determined by multiple molecular mechanisms, not only cooperative binding of the activating transcription factor as was previously thought.
    1. Immunology and Inflammation

    Somatic hypermutation of T cell receptor α chain contributes to selection in nurse shark thymus

    Jeannine A Ott et al.
    Shark's T cells suggest plasticity in diversification mechanisms used by vertebrate lymphocytes, including somatic hypermutation in the thymus.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Scaffold nucleoporins Nup188 and Nup192 share structural and functional properties with nuclear transport receptors

    Kasper R Andersen et al.
    Components of the nuclear pore complex share structural and functional features with soluble nuclear transport receptors, which suggests that there may be an evolutionary relationship between these two types of protein.
    1. Neuroscience

    Uncovering temporal structure in hippocampal output patterns

    Kourosh Maboudi et al.
    Machine learning models of coordinated hippocampal ensemble activity during sharp wave ripple activity encode structure that mirrors the place cell map expressed during exploration, and enable a new paradigm for analyzing and understanding this offline activity.
    1. Neuroscience

    Synchronized excitability in a network enables generation of internal neuronal sequences

    Yingxue Wang et al.
    Hippocampal sharp-wave sequences, which are considered the key phenomenon underlying consolidation of episodic memory, are preserved even after an animal’s memory is impaired.

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