<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Foskolos, Ilias</style></author><author><style face="normal" font="default" size="100%">Aguilar de Soto, Natacha</style></author><author><style face="normal" font="default" size="100%">Peter Teglberg Madsen</style></author><author><style face="normal" font="default" size="100%">Johnson, Mark</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Deep-diving pilot whales make cheap, but powerful, echolocation clicks with 50 µL of air</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.nature.com/articles/s41598-019-51619-6</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Echolocating toothed whales produce powerful clicks pneumatically to detect prey in the deep sea where this long-range sensory channel makes them formidable top predators. However, air supplies for sound production compress with depth following Boyle&amp;rsquo;s law suggesting that deep-diving whales must use very small air volumes per echolocation click to facilitate continuous sensory flow in foraging dives. Here we test this hypothesis by analysing click-induced acoustic resonances in the nasal air sacs, recorded by biologging tags. Using 27000 clicks from 102 dives of 23 tagged pilot whales (Globicephala macrorhynchus), we show that click production requires only 50&amp;thinsp;&amp;micro;L of air/click at 500&amp;thinsp;m depth increasing gradually to 100&amp;thinsp;&amp;micro;L at 1000&amp;thinsp;m. With such small air volumes, the metabolic cost of sound production is on the order of 40&amp;thinsp;J per dive which is a negligible fraction of the field metabolic rate. Nonetheless, whales must make frequent pauses in echolocation to recycle air between nasal sacs. Thus, frugal use of air and periodic recycling of very limited air volumes enable pilot whales, and likely other toothed whales, to echolocate cheaply and almost continuously throughout foraging dives, providing them with a strong sensory advantage in diverse aquatic habitats.&lt;/p&gt;
</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pérez, Jacobo Marrero</style></author><author><style face="normal" font="default" size="100%">Jensen, Frants H.</style></author><author><style face="normal" font="default" size="100%">Rojano-Doñate, Laia</style></author><author><style face="normal" font="default" size="100%">Aguilar de Soto, Natacha</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Different modes of acoustic communication in deep-diving short-finned pilot whales (Globicephala macrorhynchus)</style></title><secondary-title><style face="normal" font="default" size="100%">Marine Mammal Science</style></secondary-title><short-title><style face="normal" font="default" size="100%">Mar Mam Sci</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-01-2017</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://doi.wiley.com/10.1111/mms.2017.33.issue-1</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">33</style></volume><pages><style face="normal" font="default" size="100%">59 - 79</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">1</style></issue></record></records></xml>