<?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%">Rankin, Shannon</style></author><author><style face="normal" font="default" size="100%">Archer, Frederick</style></author><author><style face="normal" font="default" size="100%">Keating, Jennifer L.</style></author><author><style face="normal" font="default" size="100%">Oswald, Julie N.</style></author><author><style face="normal" font="default" size="100%">Oswald, Michael</style></author><author><style face="normal" font="default" size="100%">Curtis, Alex</style></author><author><style face="normal" font="default" size="100%">Barlow, Jay</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Acoustic classification of dolphins in the California Current using whistles, echolocation clicks, and burst pulses</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><keywords><keyword><style  face="normal" font="default" size="100%">acoustics</style></keyword><keyword><style  face="normal" font="default" size="100%">burst pulses</style></keyword><keyword><style  face="normal" font="default" size="100%">classification</style></keyword><keyword><style  face="normal" font="default" size="100%">delphinids</style></keyword><keyword><style  face="normal" font="default" size="100%">dolphins</style></keyword><keyword><style  face="normal" font="default" size="100%">echolocation clicks</style></keyword><keyword><style  face="normal" font="default" size="100%">whistles</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2016</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-12-2016</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://doi.wiley.com/10.1111/mms.12381</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;Passive acoustic monitoring of dolphins is limited by our ability to classify calls to species. Significant overlap in call characteristics among many species, combined with a wide range of call types and acoustic behavior, makes classification of calls to species challenging. Here, we introduce BANTER, a compound acoustic classification method for dolphins that utilizes information from all call types produced by dolphins rather than a single call type, as has been typical for acoustic classifiers. Output from the passive acoustic monitoring software, PAMGuard, was used to create independent classifiers for whistles, echolocation clicks, and burst pulses, which were then merged into a final, compound classifier for each species. Classifiers for five species found in the California Current ecosystem were trained and tested using 153 single-species acoustic events recorded during a 4.5 mo combined visual and acoustic shipboard cetacean survey off the west coast of the United States. Correct classification scores for individual species ranged from 71% to 92%, with an overall correct classification score of 84% for all five species. The conceptual framework of this approach easily lends itself to other species and study areas as well as to noncetacean taxa.&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>