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Zool."> <meta name="citation_publisher" content="CSIRO PUBLISHING"> <meta name="citation_author" content="RV Baudinette"> <meta name="citation_title" content="Locomotion in Macropodoid Marsupials - Gaits, Energetics and Heat-Balance"> <meta name="citation_online_date" content="1994"> <meta name="citation_publication_date" content="1994"> <meta name="citation_volume" content="42"> <meta name="citation_issue" content="1"> <meta name="citation_firstpage" content="103"> <meta name="citation_lastpage" content="123"> <meta name="citation_doi" content="10.1071/zo9940103"> <meta name="citation_pdf_url" content="https://www.publish.csiro.au/zo/pdf/zo9940103"> <meta name="citation_issn" content="1446-5698"> <meta name="citation_language" content="en"> <meta name="citation_article_type" content="RESEARCH ARTICLE"> <meta name="citation_abstract" content="This review examines gaits used by marsupials and their coupling with respiratory and cardiac cycles. It also examines the energy requirements and heat balance in exercising marsupials. Marsupials have mass-specific metabolic rates that lie at the lower end of the mammalian range but this is not reflected in locomotory energetics as quadrupedal marsupials fit the Predictive model derived from placentals. The group that does not conform to the model contains the larger hopping macropods in which an independence between metabolic rate and hopping speed is achieved on treadmills at most speeds by the storage of elastic strain energy in tendons. This yields a saving of up to 50% of the energy that would be otherwise used for locomotion. The carriage of pouch young appears to reduce the maximum running speed in quadrupedal marsupials but may be cost-neutral in hopping species. Respiration is entrained to the step cycle in wallabies by means of a visceral piston, but no entrainment of the cardiac cycle has been observed. The consequences of these phenomena are discussed. Marsupials appear to exploit their low body temperatures as a means of storing heat generated during running. Paradoxically, this does not lessen their dependence on evaporative heat loss."> <meta property="og:site_name" content="CSIRO PUBLISHING"/> <meta property="og:type" content="Journal"/> <meta property="og:title" content="Locomotion in Macropodoid Marsupials - Gaits, Energetics and Heat-Balance"/> <meta property="og:image" content="https://www.publish.csiro.au/covers/zo_generic.jpg"/> <meta property="og:url" content="https://www.publish.csiro.au/zo/zo9940103"/> <meta property="og:description" content="This review examines gaits used by marsupials and their coupling with respiratory and cardiac cycles. It also examines the energy requirements and heat balance in exercising marsupials. Marsupials have mass-specific metabolic rates that lie at the lower end of the mammalian range but this is not reflected in locomotory energetics as quadrupedal marsupials fit the Predictive model derived from placentals. The group that does not conform to the model contains the larger hopping macropods in which an independence between metabolic rate and hopping speed is achieved on treadmills at most speeds by the storage of elastic strain energy in tendons. This yields a saving of up to 50% of the energy that would be otherwise used for locomotion. The carriage of pouch young appears to reduce the maximum running speed in quadrupedal marsupials but may be cost-neutral in hopping species. Respiration is entrained to the step cycle in wallabies by means of a visceral piston, but no entrainment of the cardiac cycle has been observed. The consequences of these phenomena are discussed. Marsupials appear to exploit their low body temperatures as a means of storing heat generated during running. Paradoxically, this does not lessen their dependence on evaporative heat loss."> </head> <body class="not-front journals-page multi-sidebars"> <header> <div class="row login-register"> <div> <a href="/account/register"><i class="fi-pencil"></i> Register</a>      <a href="/account/login"><i class="fi-torso"></i> Login</a> </div> </div> <div class="row"> <div class="large-4 small-5 columns logo-wrap"> <a id="logo" href="/">CSIRO Publishing</a> </div><div class="large-8 small-7 columns nav-wrap"> <nav id="nav-main" class="top-bar okayNav" data-topbar> <ul class="menu" tabindex=0> <li><a href="/">Home</a></li> <li><a href="/books">Books</a></li> <li class="active"><a href="/journals">Journals</a></li> <li><a href="/learning">LEARNING</a></li> <li><a href="https://blog.publish.csiro.au/">Blog</a></li> </ul> </nav> </div> </div> </header> <div class="journal-banner"> <a href="/zo" class="journal-banner-left"><img src="/images/journals/banners/ban_zo_1.png" alt="Australian Journal of Zoology" width="600" height="89"></a> <span class="journal-banner-right"><img src="/images/journals/banners/ban_zo_3.png" alt="Australian Journal of Zoology Society" width="400" height="89"></span> </div> <div class="tag-line"> <div class="row"> <div class="small-12 columns"> Evolutionary, molecular and comparative zoology </div> </div> </div> <div class="cart-search"> <div class="row"> <div class="large-9 small-6 shopping-cart columns no-pad-left"> <a href="/cart"><i class="shopping-cart-icon icon" aria-hidden="true"></i>Shopping Cart: ( empty )</a> </div> <div class="large-3 small-6 search-wrap columns no-pad-right"> <form class="search" action="https://www.publish.csiro.au/zo/search" method="get" id="cpgstp" name="cpgstp" title="Search"> <label class="show-for-sr" for="search-input" >Search our journals</label> <input name="q" type="search" id="search-input" placeholder="Search This Journal..."> <input type="hidden" id="sjournal" name="sjournal" value="on"> <input type="submit" id="btnSearch" value="search" class="button"> </form> </div> </div> </div> <div class="breadcrumb-wrap"> <div class="row"> <div class="breadcrumb small-12 large-6 columns no-pad-left"><span class="">You are here:</span> <a href="/" class="crumb">Home</a> > <a href="/journals" class="crumb">Journals</a> > <a href="/zo" class="crumb">ZO</a> > ZO9940103 </div><div class="brought-to small-12 large-6 columns text-right no-pad-right"> </div> </div> </div> <div class="row content-bg collapse"> <div class="region-main small-12 large-9 large-push-3 medium-9 medium-push-3 columns no-pad"> <main id="mainContent"> <div class="article-top"> <div class="small-12 large-4 medium-4 no-pad-left columns"> <span><strong>RESEARCH ARTICLE</strong></span> </div> <div class="small-12 large-8 medium-8 text-right columns"> <a href="/zo/ZO9940079" class="previous-article"> Previous </a> <a href="/zo/ZO9940125" class="next-article"> Next </a> <a href="/zo/issue/2299" class="contents-vol"> Contents Vol  42 (1) </a> </div> </div> <section class="small-12 large-9 medium-7 no-pad region-main-content columns"> <h1>Locomotion in Macropodoid Marsupials - Gaits, Energetics and Heat-Balance</h1> <div class="Editors"> RV Baudinette </div> <br /> <div class="Journal_editors"> <p> <i>Australian Journal of Zoology</i> 42(1) 103 - 123 <br /> Published: 1994 <br /> </p> </div> <div class="journal-abstract green-item"> <h2>Abstract</h2> This review examines gaits used by marsupials and their coupling with respiratory and cardiac cycles. It also examines the energy requirements and heat balance in exercising marsupials. Marsupials have mass-specific metabolic rates that lie at the lower end of the mammalian range but this is not reflected in locomotory energetics as quadrupedal marsupials fit the Predictive model derived from placentals. The group that does not conform to the model contains the larger hopping macropods in which an independence between metabolic rate and hopping speed is achieved on treadmills at most speeds by the storage of elastic strain energy in tendons. This yields a saving of up to 50% of the energy that would be otherwise used for locomotion. The carriage of pouch young appears to reduce the maximum running speed in quadrupedal marsupials but may be cost-neutral in hopping species. Respiration is entrained to the step cycle in wallabies by means of a visceral piston, but no entrainment of the cardiac cycle has been observed. The consequences of these phenomena are discussed. Marsupials appear to exploit their low body temperatures as a means of storing heat generated during running. Paradoxically, this does not lessen their dependence on evaporative heat loss. </div> <p>https://doi.org/10.1071/ZO9940103</p> <p> © CSIRO 1994 </p> </section> <section id="second-sidebar" class="region-second-sidebar small-12 large-3 medium-6 no-pad columns"> <div class="highlight-box article-action"> <p><a href="/zo/PublishingPolicies"><img src="/media/client/cope_logo_zo.png" alt="Committee on Publication Ethics" data-rjs="2"></a></p> </div> <div class="gray-highlight-box article-action" tabindex=0> <form class="buynow_Jour" name="buy_pdf_ZO9940103" action="https://www.publish.csiro.au/cart" method="POST" > <input type="hidden" name="viewState" value="BFCCE5055970278839DCB9D374E05FE2ADE8CF32"> <input type="hidden" name="formid" value="FD35AD70E73C01D824A9F8A2B578E749C3847ED2A494C00F0C9F1F75CD2C6E26"> <input type="hidden" name="act" value="basket" /> <input type="hidden" name="item" value="ZO9940103" /> <input type="hidden" name="action" value="102223" /> <input type="hidden" 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