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November, 2019; 222 (22)

INSIDE JEB

  • You have accessSubscription required
    Early stress reprograms adult sparrows’ metabolism
    Kathryn Knight
    Journal of Experimental Biology 2019 222: jeb217497 doi: 10.1242/jeb.217497 Published 25 November 2019
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    Methylamines keep hagfish slime thread skeins together
    Kathryn Knight
    Journal of Experimental Biology 2019 222: jeb218107 doi: 10.1242/jeb.218107 Published 22 November 2019
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    Monarch butterfly caterpillars tune in to buzzing insects
    Kathryn Knight
    Journal of Experimental Biology 2019 222: jeb217513 doi: 10.1242/jeb.217513 Published 21 November 2019

COMMENTARY

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    The utility and determination of Pcrit in fishes
    Gordon R. Ultsch, Matthew D. Regan
    Journal of Experimental Biology 2019 222: jeb203646 doi: 10.1242/jeb.203646 Published 13 November 2019

    Summary: We outline why Pcrit is a useful and informative comparator of hypoxia tolerance in fishes, provided it is determined using standardized respirometry methods and sound statistical approaches.

RESEARCH ARTICLES

  • You have accessSubscription required
    Predator chemical cues decrease attack time and increase metabolic rate in an orb-web spider
    Mohammad Ameri, Darrell J. Kemp, Katherine L. Barry, Marie E. Herberstein
    Journal of Experimental Biology 2019 222: jeb212738 doi: 10.1242/jeb.212738 Published 27 November 2019

    Summary: Female orb-web spiders, Argiope keyserlingi, elevate their metabolic rate under the risk of predation, allowing them to respond quicker and spend less time on foraging, reducing their exposure to predators.

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    On sarcomere length stability during isometric contractions before and after active stretching
    Kaleena Johnston, Eng Kuan Moo, Azim Jinha, Walter Herzog
    Journal of Experimental Biology 2019 222: jeb209924 doi: 10.1242/jeb.209924 Published 27 November 2019

    Summary: Sarcomere lengths are more stable in the force-enhanced than the isometric reference state and sarcomere length instability does not necessarily correlate with sarcomere length non-uniformity and should therefore not be treated as the same phenomenon.

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    Cardiac mitochondrial function, nitric oxide sensitivity and lipid composition following hypoxia acclimation in sablefish
    Lucie Gerber, Kathy A. Clow, Tomer Katan, Mohamed Emam, Robine H. J. Leeuwis, Christopher C. Parrish, Anthony K. Gamperl
    Journal of Experimental Biology 2019 222: jeb208074 doi: 10.1242/jeb.208074 Published 27 November 2019

    Summary: Chronic hypoxia does not affect sablefish cardiac steady state mitochondrial respiration or ROS release, but alters mitochondrial lipid composition and nitric oxide sensitivity, and improves respiration and reduces ROS release post-anoxia.

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    The Caenorhabditis elegans cysteine-string protein homologue DNJ-14 is dispensable for neuromuscular junction maintenance across ageing
    Ben Mulcahy, Paul Ibbett, Lindy Holden-Dye, Vincent O'Connor
    Journal of Experimental Biology 2019 222: jeb205450 doi: 10.1242/jeb.205450 Published 25 November 2019

    Summary: Despite the cysteine-string protein (CSP) being important for synapse health in flies and mammals, the C. elegans CSP homologue DNJ-14 is not required for neuromuscular junction maintenance across ageing.

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    Lower-limb joint mechanics during maximum acceleration sprinting
    Anthony G. Schache, Adrian K. M. Lai, Nicholas A. T. Brown, Kay M. Crossley, Marcus G. Pandy
    Journal of Experimental Biology 2019 222: jeb209460 doi: 10.1242/jeb.209460 Published 25 November 2019

    Summary: An inverse-dynamics-based analysis of the mechanical function of the human major lower-limb joints reveals that the hip and especially the ankle represent key sources of positive work during the stance phase of maximum acceleration sprinting.

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    Slowing down the metabolic engine: impact of early-life corticosterone exposure on adult metabolism in house sparrows (Passer domesticus)
    Sophie M. Dupont, Jacquelyn K. Grace, Olivier Lourdais, François Brischoux, Frédéric Angelier
    Journal of Experimental Biology 2019 222: jeb211771 doi: 10.1242/jeb.211771 Published 25 November 2019

    Highlighted Article: Developmental corticosterone exposure can orient the phenotype towards an energy-saving strategy in adult sparrows and there are both benefits and costs that could be associated with this reduced metabolism.

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    High concentrations of trimethylamines in slime glands inhibit skein unraveling in Pacific hagfish
    Gaurav Jain, Marie Starksen, Kashika Singh, Christopher Hoang, Paul Yancey, Charlene McCord, Douglas S. Fudge
    Journal of Experimental Biology 2019 222: jeb213793 doi: 10.1242/jeb.213793 Published 22 November 2019

    Highlighted Article: High levels of trimethylamines in slime glands of the Pacific hagfish stabilize the skeins and prevent their unraveling by stabilizing adhesive proteins.

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    Intra-oropharyngeal food transport and swallowing in white-spotted bamboo sharks
    Noraly M. M. E. van Meer, Hannah I. Weller, Armita R. Manafzadeh, Elska B. Kaczmarek, Bradley Scott, Sander W. S. Gussekloo, Cheryl D. Wilga, Elizabeth L. Brainerd, Ariel L. Camp
    Journal of Experimental Biology 2019 222: jeb201426 doi: 10.1242/jeb.201426 Published 22 November 2019

    Summary: White-spotted bamboo sharks transport food through their long oropharynx in step-wise motions by elevating their hyoid, which is likely to generate water flows.

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    Naked mole-rats reduce the expression of ATP-dependent but not ATP-independent heat shock proteins in acute hypoxia
    Vu Chau Nguyen, Courtney A. Deck, Matthew E. Pamenter
    Journal of Experimental Biology 2019 222: jeb211243 doi: 10.1242/jeb.211243 Published 21 November 2019

    Summary: In acute hypoxia, the regulation of heat shock proteins in naked mole-rats indicates prioritization of energy conservation over proteostasis.

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    Quantifying the acid–base status of dragonflies across their transition from breathing water to breathing air
    Daniel J. Lee, Philip G. D. Matthews
    Journal of Experimental Biology 2019 222: jeb210294 doi: 10.1242/jeb.210294 Published 21 November 2019

    Summary: Dragonflies show a moderate rise in hemolymph bicarbonate as they transition from water breathing to air breathing, while the non-bicarbonate buffer capacity of their hemolymph is low relative to that of other insects.

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    Exposure to fluctuating temperatures leads to reduced immunity and to stress response in rattlesnakes
    Ailton Fabrício-Neto, Carla B. Madelaire, Fernando R. Gomes, Denis V. Andrade
    Journal of Experimental Biology 2019 222: jeb208645 doi: 10.1242/jeb.208645 Published 21 November 2019

    Summary: An acute change from a constant to a fluctuating thermal regime triggers a stress response in rattlesnakes. Additionally, exposure to a fluctuating thermal regime is associated with reduced immunity in rattlesnakes.

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    Species- and tissue-specific differences in ROS metabolism during exposure to hypoxia and hyperoxia plus recovery in marine sculpins
    Gigi Y. Lau, Sabine Arndt, Michael P. Murphy, Jeffrey G. Richards
    Journal of Experimental Biology 2019 222: jeb206896 doi: 10.1242/jeb.206896 Published 21 November 2019

    Summary: Our comparison of two intertidal sculpin fish species, which differ in hypoxia tolerance, show species- and tissue-specific responses in ROS metabolism after exposure to hypoxia and hyperoxia with normoxic recovery.

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    Activation of oxygen-responsive pathways is associated with altered protein metabolism in Arctic char exposed to hypoxia
    Alicia A. Cassidy, Simon G. Lamarre
    Journal of Experimental Biology 2019 222: jeb203901 doi: 10.1242/jeb.203901 Published 21 November 2019

    Summary: Arctic char, a hypoxia-sensitive species, regulates protein metabolism in a tissue-specific fashion during hypoxia.

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    Malpighian tubules of caterpillars: blending RNAseq and physiology to reveal regional functional diversity and novel epithelial ion transport control mechanisms
    Dennis Kolosov, Michael J. O'Donnell
    Journal of Experimental Biology 2019 222: jeb211623 doi: 10.1242/jeb.211623 Published 21 November 2019

    Summary: Malpighian tubules of caterpillars consist of several distinct regions that differ in structure and function and are regulated by complex mechanisms.

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    Hearing in caterpillars of the monarch butterfly (Danaus plexippus)
    Chantel J. Taylor, Jayne E. Yack
    Journal of Experimental Biology 2019 222: jeb211862 doi: 10.1242/jeb.211862 Published 21 November 2019

    Highlighted Article: Monarch butterfly caterpillars use specialized hairs on their thorax to detect sounds, and respond by freezing and flicking – behaviours that are thought to prevent attacks by flying insect predators.

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    Thrust generation during steady swimming and acceleration from rest in anguilliform swimmers
    Kevin T. Du Clos, John O. Dabiri, John H. Costello, Sean P. Colin, Jennifer R. Morgan, Stephanie M. Fogerson, Brad J. Gemmell
    Journal of Experimental Biology 2019 222: jeb212464 doi: 10.1242/jeb.212464 Published 18 November 2019

    Summary: During early acceleration from rest, sea lampreys employ distinctive, high-amplitude kinematics that produce thrust through the creation of a high-pressure region just posterior to the head.

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    Dynamics of electroencephalogram oscillations underlie right-eye preferences in predatory behavior of the music frog
    Jiangyan Shen, Ke Fang, Yanzhu Fan, Jinjin Song, Jing Yang, Di Shen, Yansu Liu, Guangzhan Fang
    Journal of Experimental Biology 2019 222: jeb212175 doi: 10.1242/jeb.212175 Published 15 November 2019

    Summary: Predatory responses in the music frog (Nidirana daunchina) indicate that EEG oscillations at higher frequency may play important roles in right-eye preference.

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    Multiple functions of ion transport by the nuchal organ in embryos and neonates of the freshwater branchiopod crustacean Daphnia magna
    Carolyn Morris, Michael O'Donnell
    Journal of Experimental Biology 2019 222: jeb211128 doi: 10.1242/jeb.211128 Published 15 November 2019

    Summary: Measurements with the scanning ion-selective microelectrode technique reveal roles of the nuchal organ in ionoregulation, pH regulation and nitrogenous waste excretion by Daphnia magna.

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    Path minimization in a tandem running Indian ant in the context of colony relocation
    Snigdha Mukhopadhyay, Manish Kumar Pathak, Sumana Annagiri
    Journal of Experimental Biology 2019 222: jeb206490 doi: 10.1242/jeb.206490 Published 15 November 2019

    Summary: Ants choose the shortest path when they are tandem running nestmates to their new nest.

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    Variation in developmental temperature alters adulthood plasticity of thermal tolerance in Tigriopus californicus
    Timothy M. Healy, Antonia K. Bock, Ronald S. Burton
    Journal of Experimental Biology 2019 222: jeb213405 doi: 10.1242/jeb.213405 Published 13 November 2019

    Summary: Developmental temperatures affect thermal limit plasticity in adults of a marine ectotherm, and changes in these limits are paralleled by differences in ATP synthesis rate and heat shock protein expression.

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    Tactile active sensing in an insect plant pollinator

    T. Deora, M. A. Ahmed, T. L. Daniel, B. W. Brunton
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    Ocean Acidification Alters Properties of the Exoskeleton in Adult Tanner Crabs, Chionoecetes bairdi

    Gary H. Dickinson, Shai Bejerano, Trina Salvador, Christine Makdisi, Shrey Patel, W. Christopher Long, Katherine M. Swiney, Robert J. Foy, Brittan V. Steffel, Kathryn E. Smith, Richard B. Aronson
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    Effects of variable oxygen regimes on mitochondrial bioenergetics and reactive oxygen species production in a marine bivalve Mya arenaria

    Natascha Ouillon, Eugene P. Sokolov, Stefan Otto, Gregor Rehder, Inna M. Sokolova
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    Ontogeny of the star compass in birds: pied flycatchers (Ficedula hypoleuca) can establish the star compass in spring

    Anna Zolotareva, Gleb Utvenko, Nadezhda Romanova, Alexander Pakhomov, Nikita Chernetsov
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    Why do sea turtles swim slowly? A metabolic and mechanical approach

    Chihiro Kinoshita, Takuya Fukuoka, Tomoko Narazaki, Yasuaki Niizuma, Katsufumi Sato
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