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December, 2019; 222 (24)

INSIDE JEB

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    Koalas climb like apes but bound like marsupials
    Kathryn Knight
    Journal of Experimental Biology 2019 222: jeb218586 doi: 10.1242/jeb.218586 Published 17 December 2019
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    How arrowhead spiders reel in tasty prey
    Kathryn Knight
    Journal of Experimental Biology 2019 222: jeb218990 doi: 10.1242/jeb.218990 Published 12 December 2019
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    Veggie fish depend on bacterial detox backup but carnies do not
    Kathryn Knight
    Journal of Experimental Biology 2019 222: jeb219006 doi: 10.1242/jeb.219006 Published 12 December 2019

CONVERSATION

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    Early-career researchers: an interview with Sandy Kawano
    Journal of Experimental Biology 2019 222: jeb219022 doi: 10.1242/jeb.219022 Published 16 December 2019

SHORT COMMUNICATIONS

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    Reduced telomere length in embryos exposed to predator cues
    Jose C. Noguera, Alberto Velando
    Journal of Experimental Biology 2019 222: jeb216176 doi: 10.1242/jeb.216176 Published 18 December 2019

    Summary: Bird embryos detect the presence of predators while still in the egg; this environmental stressor affects early postnatal telomere length, linking prenatal conditions to future fitness.

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    Temporary caging results in reduced levels of circulating melatonin in migratory robins
    Sara Lupi, Virginie Canoine, Paolo Pedrini, Leonida Fusani
    Journal of Experimental Biology 2019 222: jeb210914 doi: 10.1242/jeb.210914 Published 12 December 2019

    Summary: Laboratory studies have shown that melatonin modulates migratory restlessness in passerine birds; however, nocturnal melatonin is lower in caged birds than in birds trapped while flying at night.

RESEARCH ARTICLES

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    Visual system development of the spotted unicornfish, Naso brevirostris (Acanthuridae)
    Valerio Tettamanti, Fanny de Busserolles, David Lecchini, N. Justin Marshall, Fabio Cortesi
    Journal of Experimental Biology 2019 222: jeb209916 doi: 10.1242/jeb.209916 Published 20 December 2019

    Summary: Retinal topography and opsin gene expression change during ontogeny of the spotted unicornfish, Naso brevirostris, with the largest changes occurring from the larval to the juvenile stage.

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    Stepping behaviour contributes little to balance control against continuous mediolateral trunk perturbations
    Aaron N. Best, Jean-Paul Martin, Qingguo Li, Amy R. Wu
    Journal of Experimental Biology 2019 222: jeb212787 doi: 10.1242/jeb.212787 Published 19 December 2019

    Summary: When exposed to continuous, sinusoidal mediolateral trunk perturbations, subjects choose to maintain a constant step width and reduce their body centre of mass excursions to maintain stability.

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    Quantifying the swimming gaits of veined squid (Loligo forbesii) using bio-logging tags
    Genevieve E. Flaspohler, Francesco Caruso, T. Aran Mooney, Kakani Katija, Jorge Fontes, Pedro Afonso, K. Alex Shorter
    Journal of Experimental Biology 2019 222: jeb198226 doi: 10.1242/jeb.198226 Published 18 December 2019

    Summary: Application of a novel, high-resolution biologging tag (ITAG) to veined squid in an experimental environment enables development of techniques for classifying and quantifying short-term behavioral and long-term organismal activity patterns.

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    In vivo force–length and activation dynamics of two distal rat hindlimb muscles in relation to gait and grade
    Carolyn M. Eng, Nicolai Konow, Chris Tijs, Natalie C. Holt, Andrew A. Biewener
    Journal of Experimental Biology 2019 222: jeb205559 doi: 10.1242/jeb.205559 Published 18 December 2019

    Summary: Similar to the patterns observed in larger animals, distal rat muscles favor economy and show limited fascicle strains across gaits and grades.

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    Defects in mating behavior and tail morphology are the primary cause of sterility in Caenorhabditis elegans males at high temperature
    Emily M. Nett, Nicholas B. Sepulveda, Lisa N. Petrella
    Journal of Experimental Biology 2019 222: jeb208041 doi: 10.1242/jeb.208041 Published 18 December 2019

    Summary: Mating behaviors and tail morphology are affected by elevated temperature in male Caenorhabditis elegans. Changes in somatic tissues result in the behavioral consequences that underlie male sterility at elevated temperature.

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    Prolonged survival out of water is linked to a slow pace of life in a self-fertilizing amphibious fish
    Andy J. Turko, Justine E. Doherty, Irene Yin-Liao, Kelly Levesque, Perryn Kruth, Joseph M. Holden, Ryan L. Earley, Patricia A. Wright
    Journal of Experimental Biology 2019 222: jeb209270 doi: 10.1242/jeb.209270 Published 18 December 2019

    Summary: Intrinsically low metabolic rates increase survival and fitness of an amphibious fish when access to water is limited; there is no apparent cost when water is abundant.

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    Comparing context-dependent call sequences employing machine learning methods: an indication of syntactic structure of greater horseshoe bats
    Kangkang Zhang, Tong Liu, Muxun Liu, Aoqiang Li, Yanhong Xiao, Walter Metzner, Ying Liu
    Journal of Experimental Biology 2019 222: jeb214072 doi: 10.1242/jeb.214072 Published 18 December 2019

    Summary: Syntactic structures were found different in call sequences in aggressive and distress contexts of greater horseshoe bats with three machine learning models.

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    Quantifying koala locomotion strategies: implications for the evolution of arborealism in marsupials
    Joshua L. Gaschk, Celine H. Frère, Christofer J. Clemente
    Journal of Experimental Biology 2019 222: jeb207506 doi: 10.1242/jeb.207506 Published 17 December 2019

    Highlighted Article: Koalas possess a unique morphology for a marsupial; examination of their locomotion is used to determine the extent to which they have converged with other arboreal mammals such as primates.

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    Honey bee caste lipidomics in relation to life-history stage and the long life of the queen
    Nicolas Martin, A. J. Hulbert, Greg C. Brenner, Simon H. J. Brown, Todd W. Mitchell, Paul L. Else
    Journal of Experimental Biology 2019 222: jeb207043 doi: 10.1242/jeb.207043 Published 16 December 2019

    Summary: The extraordinary difference in lifespan between honey bee castes may be partially explained by oxidative damage as a result of the diet-induced increase in membrane polyunsaturated fatty acids in workers.

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    An impressive capacity for cold tolerance plasticity protects against ionoregulatory collapse in the disease vector Aedes aegypti
    Amanda Jass, Gil Y. Yerushalmi, Hannah E. Davis, Andrew Donini, Heath A. MacMillan
    Journal of Experimental Biology 2019 222: jeb214056 doi: 10.1242/jeb.214056 Published 16 December 2019

    Summary: Aedes aegypti, a dangerous vector of disease, is capable of cold acclimation at least partly through mitigation of a cold-induced loss of ion balance.

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    Reeling in the prey: fishing behaviour in an orb web spider
    Dinesh Rao, Horacio Tapia-McClung, Ajay Narendra
    Journal of Experimental Biology 2019 222: jeb213751 doi: 10.1242/jeb.213751 Published 12 December 2019

    Highlighted Article: A rare orb spider reels trapped prey in towards itself; its approach strategy shows that it can discriminate between heavy and light prey.

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    Pectoral and pelvic girdle rotations during walking and swimming in a semi-aquatic turtle: testing functional role and constraint
    Christopher J. Mayerl, John G. Capano, Adam A. Moreno, Jeanette Wyneken, Richard W. Blob, Elizabeth L. Brainerd
    Journal of Experimental Biology 2019 222: jeb212688 doi: 10.1242/jeb.212688 Published 12 December 2019

    Summary: During locomotion, the turtle pectoral girdle rotates more than the pelvis. While pelvic girdle rotations are larger on land, the pectoral girdle rotates similarly during swimming and walking.

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    Diffusive structural colour in Hoplia argentea
    Cédric Kilchoer, Primož Pirih, Ullrich Steiner, Bodo D. Wilts
    Journal of Experimental Biology 2019 222: jeb213306 doi: 10.1242/jeb.213306 Published 12 December 2019

    Summary: Hoplia argentea beetles are diffusely green as a result of the combination of a multilayered photonic structure and a filamentous pigmented layer that acts as a diffuser.

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    Disparate responses to salinity across species and organizational levels in anchialine shrimps
    Justin C. Havird, Eli Meyer, Yoshihisa Fujita, Rebecca C. Vaught, Raymond P. Henry, Scott R. Santos
    Journal of Experimental Biology 2019 222: jeb211920 doi: 10.1242/jeb.211920 Published 12 December 2019

    Summary: Five species of shrimps representing independent invasions of the anchialine ecosystem show wide variation in response to fluctuating salinity at the whole-animal, tissue and molecular level. Environmental adaptations to anchialine habitats may be divergent across both distantly and closely related taxa.

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    Glucagon regulation of carbohydrate metabolism in rainbow trout: in vivo glucose fluxes and gene expression
    Johnathon L. I. Forbes, Daniel J. Kostyniuk, Jan A. Mennigen, Jean-Michel Weber
    Journal of Experimental Biology 2019 222: jeb211730 doi: 10.1242/jeb.211730 Published 12 December 2019

    Summary: Glucagon causes hyperglycaemia in rainbow trout by increasing hepatic glucose production via activation of gluconeogenesis, and by decreasing glucose disposal via inhibition of glycogen synthesis and glycolysis.

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    The role of intestinal bacteria in the ammonia detoxification ability of teleost fish
    Leah A. Turner, Carol Bucking
    Journal of Experimental Biology 2019 222: jeb209882 doi: 10.1242/jeb.209882 Published 12 December 2019

    Highlighted Article: Variable reliance on enzymatic pathways to ameliorate toxic levels of ammonia found within the intestinal lumen of fish during digestion is possibly due to the inconstant contribution of bacterial inhabitants.

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    Fat content of striped mice decreases during the breeding season but not during the food-restricted dry season
    Rebecca Rimbach, Stéphane Blanc, Alexandre Zahariev, Jean-Patrice Robin, Neville Pillay, Carsten Schradin
    Journal of Experimental Biology 2019 222: jeb208504 doi: 10.1242/jeb.208504 Published 12 December 2019

    Summary: Striped mice do not accumulate large fat stores before the dry season but mobilize existing stores at the onset of breeding. Variation in fat stores is not associated with disappearance risk.

CORRECTION

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    Correction: Experimental evidence that physical activity affects the multivariate associations among muscle attachments (entheses) (doi:10.1242/jeb.213058)
    Fotios Alexandros Karakostis, Ian J. Wallace, Nicolai Konow, Katerina Harvati
    Journal of Experimental Biology 2019 222: jeb220210 doi: 10.1242/jeb.220210 Published 18 December 2019
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    Social organisation and the evolution of life-history traits in two queen morphs of the ant Temnothorax rugatulus

    Matteo A. Negroni, Marah Stoldt, Marie Oster, Ann-Sophie Rupp, Barbara Feldmeyer, Susanne Foitzik
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    Independent effects of seawater pH and high PCO2 on olfactory sensitivity in fish: possible role of carbonic anhydrase

    Zélia Velez, Rita A. Costa, Wenjing Wang, Peter C. Hubbard
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    Diversity in rest-activity patterns among Lake Malawi cichlid fishes suggests a novel axis of habitat partitioning

    Evan Lloyd, Brian Chhouk, Andrew J. Conith, Alex C. Keene, R. Craig Albertson
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    Attention and distraction in the modular visual system of a jumping spider

    Margaret Bruce, Daniel Daye, Skye M. Long, Alex M. Winsor, Gil Menda, Ronald R. Hoy, Elizabeth M. Jakob
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    Responses of Manduca sexta larvae to heat waves

    Joel G. Kingsolver, M. Elizabeth Moore, Kate E. Augustine, Christina A. Hill
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