22 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Immune genes are hotspots of shared positive selection across birds and mammals

    Allison J Shultz, Timothy B Sackton
    Pathogens, particularly viruses, target the same genes over deep evolutionary time, resulting in shared signatures of positive selection and transcriptional responses at the same genes.
    1. Ecology
    2. Evolutionary Biology

    The Natural History of Model Organisms: Nothobranchius furzeri, an 'instant' fish from an ephemeral habitat

    Martin Reichard, Matej Polačik
    The turquoise killifish from ephemeral pools in African savannah combines extremely short lifespan with a standard vertebrate body plan – ideal attributes for a laboratory animal.
    1. Evolutionary Biology

    A β-carotene-binding protein carrying a red pigment regulates body-color transition between green and black in locusts

    Meiling Yang et al.
    Body color change of locusts reveals a new 'palette effect' mechanism by which the red βCBP–β-carotene pigment complex acts as a switch to coordinate between black and green coloration.
    1. Neuroscience

    Arcuate nucleus and lateral hypothalamic CART neurons in the mouse brain exert opposing effects on energy expenditure

    Aitak Farzi et al.
    CART exerts differential metabolic effects in response to activation of neurons of the Arc, where CART suppresses energy expenditure, while it enforces the reward characteristics of the LHA.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structural basis of malodour precursor transport in the human axilla

    Gurdeep S Minhas et al.
    Discovery of the structural basis for recognition and uptake of a human precursor for body odour production reveals an important role for bacterial peptide transport and novel routes to prevent its production in humans.
    1. Neuroscience

    Preoptic leptin signaling modulates energy balance independent of body temperature regulation

    Sangho Yu et al.
    The preoptic area (POA) regulates distinct metabolic adaptations, via leptin-dependent (fasting-induced hypometabolism and high-fat-diet-induced hypermetabolism), or leptin-independent mechanisms (temperature induced metabolic changes) and thus significantly contributes to body weight homeostasis.
    1. Computational and Systems Biology
    2. Neuroscience

    Automated analysis of long-term grooming behavior in Drosophila using a k-nearest neighbors classifier

    Bing Qiao et al.
    Drosophila grooming is driven by two internal programs.
    1. Ecology

    Thermoregulation: Bugs battle stress from hot blood

    Joshua B Benoit, David L Denlinger
    A heat exchange mechanism in the head of kissing bugs helps to prevent stress and regulate their temperature while they feed on warm blood.
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    1. Ecology

    Countercurrent heat exchange and thermoregulation during blood-feeding in kissing bugs

    Chloé Lahondère et al.
    A novel thermoregulatory mechanism in blood-sucking insects, vectors of human disease, is described using a functional-morphological approach.
    1. Neuroscience

    Sleep homeostasis regulated by 5HT2b receptor in a small subset of neurons in the dorsal fan-shaped body of drosophila

    Yongjun Qian et al.
    Serotonergic signaling regulates sleep homeostasis through 5HT2b receptor in a small subset of neurons in the dorsal fan-shaped body in drosophila.

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