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

    Brain Size: Gene losses did not stop the evolution of big brains

    Cristian Cañestro, Vittoria Roncalli
    Elephants and fruit bats have evolved large brains even though they have lost a gene that is fundamental to the supply of energy to the brain when glucose is not available.
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    1. Physics of Living Systems

    Animal Behavior: Whale breaching says it loud and clear

    Alexander J Werth, Charles L Lemon
    A whale leaping above the surface expends an enormous amount of energy, displaying its health and strength to peers and potential mates.
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    1. Ecology

    Vessel noise levels drive behavioural responses of humpback whales with implications for whale-watching

    Kate R Sprogis et al.
    Controlled exposure experiments reveal that underwater vessel noise level from a motorised vessel is an adequate driver of behavioural disturbance in humpback whales.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Recurrent loss of HMGCS2 shows that ketogenesis is not essential for the evolution of large mammalian brains

    David Jebb, Michael Hiller
    The evolutionary loss of the main enzyme required for ketone body biosynthesis suggests that alternative strategies to provide energy for large brains during fasting evolved repeatedly in mammals.
    1. Physics of Living Systems

    Energetic and physical limitations on the breaching performance of large whales

    Paolo S Segre et al.
    Muscle power-generating capabilities, and not energetic limitations, limit the breaching abilities of the largest whales.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Gene activation by a CRISPR-assisted trans enhancer

    Xinhui Xu et al.
    Both exogenous and endogenous genes can be highly activated in cells by a new dCas9-based activator, CRISPR-assisted trans enhancer, that can be used to activate genes for biomedical applications.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures and functional properties of CALHM channels of the human placenta

    Katarzyna Drożdżyk et al.
    Members of the calcium homeostasis modulator family expressed in the placenta form large channels with unknown activation properties that harbor a lipid bilayer on the inside of a cylindrical pore.
    1. Neuroscience

    Atoh1-dependent rhombic lip neurons are required for temporal delay between independent respiratory oscillators in embryonic mice

    Srinivasan Tupal et al.
    The rhythmic patterns of activity that underlie breathing are generated and coordinated by distinct populations of neurons within the brainstem.
    1. Cell Biology
    2. Neuroscience

    Astrocytes refine cortical connectivity at dendritic spines

    W Christopher Risher et al.
    Spines with multiple excitatory contacts are potential sites for competition between thalamic and cortical axons, which is regulated by the astrocytes through the secreted synaptogenic protein hevin.
    1. Computational and Systems Biology
    2. Neuroscience

    Regulation of sleep homeostasis by sexual arousal

    Esteban J Beckwith et al.
    Sexual arousal, exposure to aphrodisiac pheromones, or mere activation of peripheral pheromone-sensing neurons can modulate sleep homeostasis and are able to counteract the effects of sleep deprivation in Drosophila.

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