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B."],"published-print":{"date-parts":[[2021,11,10]]},"abstract":"<jats:p>\n                    The impressive breath-hold capabilities of marine mammals are facilitated by both enhanced O\n                    <jats:sub>2<\/jats:sub>\n                    stores and reductions in the rate of O\n                    <jats:sub>2<\/jats:sub>\n                    consumption via peripheral vasoconstriction and bradycardia, called the dive response. Many studies have focused on the extreme role of the dive response in maximizing dive duration in marine mammals, but few have addressed how these adjustments may compromise the capability to hunt, digest and thermoregulate during routine dives. Here, we use DTAGs, which record heart rate together with foraging and movement behaviour, to investigate how O\n                    <jats:sub>2<\/jats:sub>\n                    management is balanced between the need to dive and forage in five wild harbour porpoises that hunt thousands of small prey daily during continuous shallow diving. Dive heart rates were moderate (median minimum 47\u201369 bpm) and relatively stable across dive types, dive duration (0.5\u20133.3 min) and activity. A moderate dive response, allowing for some perfusion of peripheral tissues, may be essential for fuelling the high field metabolic rates required to maintain body temperature and support digestion during diving in these small, continuously feeding cetaceans. Thus, despite having the capacity to prolong dives via a strong dive response, for these shallow-diving cetaceans, it appears to be more efficient to maintain circulation while diving: extreme heart rate gymnastics are for deep dives and emergencies, not everyday use.\n                  <\/jats:p>","DOI":"10.1098\/rspb.2021.1596","type":"journal-article","created":{"date-parts":[[2021,11,10]],"date-time":"2021-11-10T03:10:55Z","timestamp":1636513855000},"update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["High heart rates in hunting harbour porpoises"],"prefix":"10.1098","volume":"288","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5028-066X","authenticated-orcid":true,"given":"Birgitte I.","family":"McDonald","sequence":"first","affiliation":[{"name":"Moss Landing Marine Laboratories, San Jose State University, Moss Landing, CA 93933, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5653-5096","authenticated-orcid":true,"given":"Siri L.","family":"Elmegaard","sequence":"additional","affiliation":[{"name":"Zoophysiology, Department of Biology, Aarhus University, 8000 Aarhus, Denmark"},{"name":"Marine Mammal Research, Bioscience to Ecoscience, Aarhus University, 4000 Roskilde, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark","family":"Johnson","sequence":"additional","affiliation":[{"name":"Aarhus Institute of Advanced Studies, Aarhus University, 8000 Aarhus, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3599-7440","authenticated-orcid":true,"given":"Danuta M.","family":"Wisniewska","sequence":"additional","affiliation":[{"name":"Centre d'Etudes Biologiques de Chiz\u00e9, UMR7372 CNRS-Universit\u00e9 La Rochelle, 79360 Villiers en Bois, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1438-0281","authenticated-orcid":true,"given":"Laia","family":"Rojano-Do\u00f1ate","sequence":"additional","affiliation":[{"name":"Zoophysiology, Department of Biology, Aarhus University, 8000 Aarhus, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1237-2066","authenticated-orcid":true,"given":"Anders","family":"Galatius","sequence":"additional","affiliation":[{"name":"Marine Mammal Research, Bioscience to Ecoscience, Aarhus University, 4000 Roskilde, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ursula","family":"Siebert","sequence":"additional","affiliation":[{"name":"Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, 25761 B\u00fcsum, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4376-4700","authenticated-orcid":true,"given":"Jonas","family":"Teilmann","sequence":"additional","affiliation":[{"name":"Marine Mammal Research, Bioscience to Ecoscience, Aarhus University, 4000 Roskilde, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5208-5259","authenticated-orcid":true,"given":"Peter T.","family":"Madsen","sequence":"additional","affiliation":[{"name":"Zoophysiology, Department of Biology, Aarhus University, 8000 Aarhus, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","published-online":{"date-parts":[[2021,11,10]]},"reference":[{"key":"e_1_3_7_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9258(18)72738-5"},{"key":"e_1_3_7_3_2","first-page":"1","article-title":"Experimental investigations on the respiratory function in diving mammals and birds","volume":"22","author":"Scholander PF","year":"1940","unstructured":"Scholander PF. 1940 Experimental investigations on the respiratory function in diving mammals and birds. 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