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Mechanics, hydrodynamics and energetics of blue whale lunge feeding: efficiency dependence on krill density

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dc.contributor.author Goldbogen, J. A. en
dc.contributor.author Calambokidis, J. en
dc.contributor.author Oleson, E. en
dc.contributor.author Potvin, J. en
dc.contributor.author Pyenson, Nicholas D. en
dc.contributor.author Schorr, G. en
dc.contributor.author Shadwick, R. E. en
dc.date.accessioned 2012-02-03T20:47:08Z
dc.date.available 2012-02-03T20:47:08Z
dc.date.issued 2011
dc.identifier.citation Goldbogen, J. A., Calambokidis, J., Oleson, E., Potvin, J., Pyenson, Nicholas D., Schorr, G., and Shadwick, R. E. 2011. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F17622">Mechanics, hydrodynamics and energetics of blue whale lunge feeding: efficiency dependence on krill density</a>." <em>Journal of Experimental Biology</em>. 214 (1):131&ndash;146. <a href="https://doi.org/10.1242/jeb.048157">https://doi.org/10.1242/jeb.048157</a> en
dc.identifier.issn 0022-0949
dc.identifier.uri http://hdl.handle.net/10088/17622
dc.description.abstract Lunge feeding by rorqual whales (Balaenopteridae) is associated with a high energetic cost that decreases diving capacity, thereby limiting access to dense prey patches at depth. Despite this cost, rorquals exhibit high rates of lipid deposition and extremely large maximum body size. To address this paradox, we integrated kinematic data from digital tags with unsteady hydrodynamic models to estimate the energy budget for lunges and foraging dives of blue whales (Balaenoptera musculus), the largest rorqual and living mammal. Our analysis suggests that, despite the large amount of mechanical work required to lunge feed, a large amount of prey and, therefore, energy is obtained during engulfment. Furthermore, we suggest that foraging efficiency for blue whales is significantly higher than for other marine mammals by nearly an order of magnitude, but only if lunges target extremely high densities of krill. The high predicted efficiency is attributed to the enhanced engulfment capacity, rapid filter rate and low mass-specific metabolic rate associated with large body size in blue whales. These results highlight the importance of high prey density, regardless of prey patch depth, for efficient bulk filter feeding in baleen whales and may explain some diel changes in foraging behavior in rorqual whales. en
dc.relation.ispartof Journal of Experimental Biology en
dc.title Mechanics, hydrodynamics and energetics of blue whale lunge feeding: efficiency dependence on krill density en
dc.type Journal Article en
dc.identifier.srbnumber 93622
dc.identifier.doi 10.1242/jeb.048157
rft.jtitle Journal of Experimental Biology
rft.volume 214
rft.issue 1
rft.spage 131
rft.epage 146
dc.description.SIUnit NH-Paleobiology en
dc.description.SIUnit NMNH en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 131
dc.citation.epage 146


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