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buoyancy

  • SHORT COMMUNICATION
    In vivo measurement of lung volume in ringed seals: insights from biomedical imaging
    Holly Hermann-Sorensen, Nicole M. Thometz, Kathleen Woodie, Sophie Dennison-Gibby, Colleen Reichmuth
    Journal of Experimental Biology 2021 224: jeb235507 doi: 10.1242/jeb.235507 Published 26 January 2021

    Summary: CT imaging of living ringed seals suggests that lung volumes are smaller than those obtained postmortem, reveals that total lung capacity is overestimated by established allometric relationships, and affirms that body density and net vertical forces influence the cost of diving.

  • RESEARCH ARTICLE
    Near-equal compressibility of liver oil and seawater minimises buoyancy changes in deep-sea sharks and chimaeras
    Imants G. Priede, Rhoderick W. Burgass, Manolis Mandalakis, Apostolos Spyros, Petros Gikas, Finlay Burns, Jim Drewery
    Journal of Experimental Biology 2020 223: jeb222943 doi: 10.1242/jeb.222943 Published 11 May 2020

    Summary: Pressure change during vertical migrations of sharks has little effect on buoyancy because liver oil and seawater have almost equal compressibility. Temperature and salinity effects dominate, possibly influencing behaviour and swimming performance.

  • RESEARCH ARTICLE
    Swim bladder morphology changes with female reproductive state in the mouth-brooding African cichlid Astatotilapia burtoni
    Julie M. Butler, Sarah M. Whitlow, Anwei P. Gwan, Prosanta Chakrabarty, Karen P. Maruska
    Journal of Experimental Biology 2017 220: 4463-4470; doi: 10.1242/jeb.163832

    Highlighted Article: Redistribution of gas between anterior and posterior chambers of a compartmentalized swim bladder allows mouth-brooding females to better regulate buoyancy and swimming posture during this extreme maternal care behavior.

  • RESEARCH ARTICLE
    Physostomous channel catfish, Ictalurus punctatus, modify swimming mode and buoyancy based on flow conditions
    Makoto A. Yoshida, Daisuke Yamamoto, Katsufumi Sato
    Journal of Experimental Biology 2017 220: 597-606; doi: 10.1242/jeb.140202

    Summary: Channel catfish adopted negative buoyancy in lentic environments, but maintained buoyancy closer to neutral in lotic environments to optimise their locomotion.

  • RESEARCH ARTICLE
    Body density and diving gas volume of the northern bottlenose whale (Hyperoodon ampullatus)
    Patrick Miller, Tomoko Narazaki, Saana Isojunno, Kagari Aoki, Sophie Smout, Katsufumi Sato
    Journal of Experimental Biology 2016 219: 2458-2468; doi: 10.1242/jeb.137349

    Summary: Body density and diving gas volume, two important but poorly understood physiological characteristics of beaked whales, are revealed through analysis of hydrodynamic performance during glides.

  • COMMENTARY
    Does the physiology of chondrichthyan fishes constrain their distribution in the deep sea?
    Jason R. Treberg, Ben Speers-Roesch
    Journal of Experimental Biology 2016 219: 615-625; doi: 10.1242/jeb.128108

    Summary: Chondrichthyan fishes (sharks, rays and chimaeras) are exceedingly rare or possibly absent at abyssal depths (>4000 m), unlike bony fishes. This Commentary discusses hypotheses implicating the unusual physiology of chondrichthyans as an explanation for their scarcity at great depths.

  • RESEARCH ARTICLE
    Gas exchange and dive characteristics of the free-swimming backswimmer Anisops deanei
    Karl K. Jones, Edward P. Snelling, Amy P. Watson, Roger S. Seymour
    Journal of Experimental Biology 2015 218: 3478-3486; doi: 10.1242/jeb.125047

    Highlighted Article: Exotic gas experiments and mathematical modelling show that backswimmers extend dive duration by extracting 20% of their O2 directly from the water.

  • RESEARCH ARTICLE
    Mechanical challenges to freshwater residency in sharks and rays
    Adrian C. Gleiss, Jean Potvin, James J. Keleher, Jeff M. Whitty, David L. Morgan, Jeremy A. Goldbogen
    Journal of Experimental Biology 2015 218: 1099-1110; doi: 10.1242/jeb.114868

    Summary: The high negative buoyancy of elasmobranchs increases the cost of locomotion and may be responsible for the scarcity of sharks in fresh water.

  • RESEARCH ARTICLES
    Variation in body condition during the post-moult foraging trip of southern elephant seals and its consequences on diving behaviour
    Gaëtan Richard, Jade Vacquié-Garcia, Joffrey Jouma’a, Baptiste Picard, Alexandre Génin, John P. Y. Arnould, Frédéric Bailleul, Christophe Guinet
    Journal of Experimental Biology 2014 217: 2609-2619; doi: 10.1242/jeb.088542
  • RESEARCH ARTICLES
    King penguins adjust their diving behaviour with age
    Maryline Le Vaillant, Rory P. Wilson, Akiko Kato, Claire Saraux, Nicolas Hanuise, Onésime Prud'Homme, Yvon Le Maho, Céline Le Bohec, Yan Ropert-Coudert
    Journal of Experimental Biology 2012 215: 3685-3692; doi: 10.1242/jeb.071175

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