246 results found
  1. January 2015

    Episode 17: January 2015

    In this episode we hear about controlling sperm by optogenetics, hibernation, body clocks, enzyme structure, and a way to overcome stress-induced infertility.
    1. Genetics and Genomics
    2. Neuroscience

    Layered roles of fruitless isoforms in specification and function of male aggression-promoting neurons in Drosophila

    Margot Wohl et al.
    Male-type aggressive and courtship behaviors of the fruit flies are differentially specified by two sex-determining genes, providing a substrate for the evolution to sculpt these two behaviors independently.
    1. Developmental Biology
    2. Neuroscience

    Characterization of cephalic and non-cephalic sensory cell types provides insight into joint photo- and mechanoreceptor evolution

    Roger Revilla-i-Domingo et al.
    Molecular, cellular and behavioral genetic approaches in Platynereis dumerilii indicate that r-Opsins can act as ancient, light-dependent modulators of mechanosensation, and suggest that light-independent mechanosensory roles of r-Opsins evolved secondarily.
    1. Neuroscience

    Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton

    Csaba Verasztó et al.
    In a zooplankton larva, ciliary and rhabdomeric photoreceptor cells work antagonistically to form a spectral depth gauge.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Discovery of methylfarnesoate as the annelid brain hormone reveals an ancient role of sesquiterpenoids in reproduction

    Sven Schenk et al.
    A small brain-derived lipid prevents bristle worms from entering maturation and death, challenging current views of hormone evolution and pesticide specificity.
    1. Neuroscience

    Mouse rods signal through gap junctions with cones

    Sabrina Asteriti et al.
    Electrophysiological recordings show that cones in the eyes of mice are able to receive strong input from rods via gap junctions, supporting the view that this route plays an important role in vision.
    1. Neuroscience

    Norepinephrine is required to promote wakefulness and for hypocretin-induced arousal in zebrafish

    Chanpreet Singh et al.
    Experiments in genetically modified zebrafish that are unable to produce norepinephrine show that this neurotransmitter promotes wakefulness by mediating the effects of the neuropeptide hypocretin.
    1. Neuroscience

    Postprandial sleep mechanics in Drosophila

    Keith R Murphy et al.
    Evidence of food coma has been found in fruit flies, allowing the properties that drive postprandial sleep and their underlying genetic and neuronal mechanisms to be described.
    1. Plant Biology

    Drought Stress: Into the fourth dimension

    David L Des Marais
    The influence of time on the drought response of Brassica rapa, an agriculturally important species of plant, has been clarified.
    Insight
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