Abstract
Bulk filter feeding has enabled gigantism throughout evolutionary history. The largest animals, extant rorqual whales, utilize intermittent engulfment filtration feeding (lunge feeding), which increases in efficiency with body size, enabling their gigantism. The smallest extant rorquals (7–10 m minke whales), however, still exhibit short-term foraging efficiencies several times greater than smaller non-filter-feeding cetaceans, raising the question of why smaller animals do not utilize this foraging modality. We collected 437 h of bio-logging data from 23 Antarctic minke whales (Balaenoptera bonaerensis) to test the relationship of feeding rates (λf) to body size. Here, we show that while ultra-high nighttime λf (mean ± s.d.: 165 ± 40 lunges h−1; max: 236 lunges h−1; mean depth: 28 ± 46 m) were indistinguishable from predictions from observations of larger species, daytime λf (mean depth: 72 ± 72 m) were only 25–40% of predicted rates. Both λf were near the maxima allowed by calculated biomechanical, physiological and environmental constraints, but these temporal constraints meant that maximum λf was below the expected λf for animals smaller than ~5 m—the length of weaned minke whales. Our findings suggest that minimum size for specific filter-feeding body plans may relate broadly to temporal restrictions on filtration rate and have implications for the evolution of filter feeding.
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Data availability
The datasets analysed during the current study are available at Stanford’s digital repository, https://purl.stanford.edu/pm378wm1385. This deposit includes processed bio-logging data describing animal orientation, motion and position; video data used to calculate engulfment timing; audited feeding data including indices of identified foraging events and start and end points of feeding bouts; summarized foraging data for all species; and aerial imagery and length analysis.
Code availability
Custom code and a wiki tutorial for processing raw tag data into animal orientation, motion and position is available in ref. 84 and directly at https://github.com/wgough/CATS-Methods-Materials.
References
Dove, A. D. & Pierce, S. J. Whale Sharks: Biology, Ecology, and Conservation (CRC Press, 2021).
Friedman, M. et al. 100-million-year dynasty of giant planktivorous bony fishes in the Mesozoic seas. Science 327, 990–993 (2010).
Friedman, M. Parallel evolutionary trajectories underlie the origin of giant suspension-feeding whales and bony fishes. Proc. R. Soc. B https://doi.org/10.1098/rspb.2011.1381 (2011).
Sanderson, S. L. & Wassersug, R. in The Skull: Functional and Evolutionary Mechanisms Vol. 3 (eds Hanken, J. & Hall, B. K.) 37–112 (Univ. Chicago Press, 1993).
Rowat, D. & Brooks, K. A review of the biology, fisheries and conservation of the whale shark Rhincodon typus. J. Fish Biol. 80, 1019–1056 (2012).
Pimiento, C., Cantalapiedra, J. L., Shimada, K., Field, D. J. & Smaers, J. B. Evolutionary pathways toward gigantism in sharks and rays. Evolution 73, 588–599 (2019).
Stiefel, K. M. Evolutionary trends in large pelagic filter-feeders. Hist. Biol. 33, 1477–1488 (2021).
Goldbogen, J. & Madsen, P. The largest of August Krogh animals: physiology and biomechanics of the blue whale revisited. Comp. Biochem. Physiol. A 254, 110894 (2021).
Jørgensen, C. B. Quantitative aspects of filter feeding in invertebrates. Biol. Rev. 30, 391–453 (1955).
Radke, R. J. & Kahl, U. Effects of a filter‐feeding fish [silver carp, Hypophthalmichthys molitrix (Val.)] on phyto‐and zooplankton in a mesotrophic reservoir: results from an enclosure experiment. Freshw. Biol. 47, 2337–2344 (2002).
Schiemer, F. in Perspectives in Tropical Limnology (eds Schiemer, F. & Boland, K.T.) 65–76 (SPB Academic Publishing, 1996).
Carey, N. & Goldbogen, J. A. Kinematics of ram filter feeding and beat-glide swimming in the northern anchovy Engraulis mordax. J. Exp. Biol. 220, 2717–2725 (2017).
Haines, G. E. & Sanderson, S. L. Integration of swimming kinematics and ram suspension feeding in a model American paddlefish, Polyodon spathula. J. Exp. Biol. 220, 4535–4547 (2017).
Paig‐Tran, E. M., Kleinteich, T. & Summers, A. P. The filter pads and filtration mechanisms of the devil rays: variation at macro and microscopic scales. J. Morphol. 274, 1026–1043 (2013).
Jacobsen, I. P. & Bennett, M. B. A comparative analysis of feeding and trophic level ecology in stingrays (Rajiformes; Myliobatoidei) and electric rays (Rajiformes: Torpedinoidei). PLoS ONE 8, e71348 (2013).
Ellis, J. Occurrence of pelagic stingray Pteroplatytrygon violacea (Bonaparte, 1832) in the North Sea. J. Fish Biol. 71, 933–937 (2007).
Werth, A. J. & Potvin, J. Baleen hydrodynamics and morphology of cross-flow filtration in balaenid whale suspension feeding. PLoS ONE 11, e0150106 (2016).
Orton, L. S. & Brodie, P. F. Engulfing mechanics of fin whales. Can. J. Zool. 65, 2898–2907 (1987).
Shadwick, R. E., Goldbogen, J. A., Potvin, J., Pyenson, N. D. & Vogl, A. W. Novel muscle and connective tissue design enables high extensibility and controls engulfment volume in lunge-feeding rorqual whales. J. Exp. Biol. 216, 2691–2701 (2013).
Shadwick, R. E., Goldbogen, J. A., Pyenson, N. D. & Whale, J. C. Structure and function in the lunge feeding apparatus: mechanical properties of the fin whale mandible. Anat. Rec. 300, 1953–1962 (2017).
Werth, A. J., Ito, H. & Ueda, K. Multiaxial movements at the minke whale temporomandibular joint. J. Morphol. 281, 402–412 (2020).
Lambertsen, R., Ulrich, N. & Straley, J. Frontomandibular stay of Balaenopteridae: a mechanism for momentum recapture during feeding. J. Mammal. 76, 877–899 (1995).
Pyenson, N. D. et al. Discovery of a sensory organ that coordinates lunge feeding in rorqual whales. Nature 485, 498–501 (2012).
Goldbogen, J. A. et al. How baleen whales feed: the biomechanics of engulfment and filtration. Annu. Rev. Mar. Sci. 9, 367–386 (2017).
Bierlich, K. C. et al. A Bayesian approach for predicting photogrammetric uncertainty in morphometric measurements derived from drones. Mar. Ecol. Prog. Ser. 673, 193–210 (2021).
Slater, G. J., Goldbogen, J. A. & Pyenson, N. D. Independent evolution of baleen whale gigantism linked to Plio-Pleistocene ocean dynamics. Proc. R. Soc. B 284, 20170546 (2017).
Lockyer, C. Growth and energy budgets of large baleen whales from the Southern Hemisphere. Food Agric. Organ. 3, 379–487 (1981).
Mackintosh, A. & Wheeler, J. Southern blue and fin whales. Discover. Rep. 1, 257–540 (1929).
Smith, F. A. & Lyons, S. K. How big should a mammal be? A macroecological look at mammalian body size over space and time. Phil. Trans. R. Soc. B 366, 2364–2378 (2011).
Gearty, W., McClain, C. R. & Payne, J. L. Energetic tradeoffs control the size distribution of aquatic mammals. Proc. Natl Acad. Sci. USA 115, 4194–4199 (2018).
Lockyer, C. Body weights of some species of large whales. ICES J. Mar. Sci. 36, 259–273 (1976).
Goldbogen, J. A. Physiological constraints on marine mammal body size. Proc. Natl Acad. Sci. USA 115, 3995–3997 (2018).
Goldbogen, J. A. et al. Why whales are big but not bigger: physiological drivers and ecological limits in the age of ocean giants. Science 366, 1367–1372 (2019).
Cade, D. E. et al. Social exploitation of extensive, ephemeral, environmentally controlled prey patches by super-groups of rorqual whales. Anim. Behav. 182, 251–266 (2021).
Goldbogen, J. A. et al. Scaling of lunge‐feeding performance in rorqual whales: mass‐specific energy expenditure increases with body size and progressively limits diving capacity. Funct. Ecol. 26, 216–226 (2012).
Kahane-Rapport, S. R. & Goldbogen, J. A. Allometric scaling of morphology and engulfment capacity in rorqual whales. J. Morphol. 279, 1256–1268 (2018).
Kahane-Rapport, S. R. et al. Lunge filter feeding biomechanics constrain rorqual foraging ecology across scale. J. Exp. Biol. https://doi.org/10.1242/jeb.224196 (2020).
McNab, B. K. Complications inherent in scaling the basal rate of metabolism in mammals. Q. Rev. Biol. 63, 25–54 (1988).
Boyd, I. in Marine Mammal Biology: An Evolutionary Approach (ed. Hoelzel, A. R.) 247–277 (Blackwell Science Ltd, 2002).
Kleiber, M. Body size and metabolism. Hilgardia 6, 315–353 (1932).
West, G. B., Brown, J. H. & Enquist, B. J. A general model for the origin of allometric scaling laws in biology. Science 276, 122–126 (1997).
Corkeron, P. J. & Connor, R. C. Why do baleen whales migrate? Mar. Mamm. Sci. 15, 1228–1245 (1999).
Lockyer, C. Review of baleen whale (Mysticeti) reproduction and implications for management. Rep. Int. Whal. Commn 6, 27–50 (1984).
Lockyer, C. All creatures great and smaller: a study in cetacean life history energetics. J. Mar. Biol. Assoc. UK 87, 1035–1045 (2007).
Frazer, J. & Huggett, A. S. G. Specific foetal growth rates of cetaceans. J. Zool. 169, 111–126 (1973).
Zhou, M. & Dorland, R. D. Aggregation and vertical migration behavior of Euphausia superba. Deep Sea Res. II 51, 2119–2137 (2004).
Gough, W. T. et al. Scaling of swimming performance in baleen whales. J. Exp. Biol. 222, jeb204172 (2019).
Cade, D. E. et al. Predator-scale spatial analysis of intra-patch prey distribution reveals the energetic drivers of rorqual whale super group formation. Funct. Ecol. 35, 894–908 (2021).
Gough, W. T. et al. Scaling of oscillatory kinematics and Froude efficiency in baleen whales. J. Exp. Biol. 224, jeb237586 (2021).
Croll, D. A., Kudela, R. & Tershy, B. R. in Whales, Whaling, and Ocean Ecosystems (eds Estes, J. A. et al.) Ch. 16 (Univ. California Press, 2006).
Woodward, B. L., Winn, J. P. & Fish, F. E. Morphological specializations of baleen whales associated with hydrodynamic performance and ecological niche. J. Morphol. 267, 1284–1294 (2006).
Webb, P. W. & De Buffrénil, V. Locomotion in the biology of large aquatic vertebrates. Trans. Am. Fish. Soc. 119, 629–641 (1990).
Acevedo-Gutiérrez, A., Croll, D. & Tershy, B. High feeding costs limit dive time in the largest whales. J. Exp. Biol. 205, 1747–1753 (2002).
Goldbogen, J. A. et al. Mechanics, hydrodynamics and energetics of blue whale lunge feeding: efficiency dependence on krill density. J. Exp. Biol. 214, 131–146 (2011).
Potvin, J., Cade, D. E., Werth, A. J., Shadwick, R. E. & Goldbogen, J. A. Rorqual lunge-feeding energetics near and away from the kinematic threshold of optimal efficiency. Integr. Org. Biol. 3, obab005 (2021).
Pyenson, N. D. The ecological rise of whales chronicled by the fossil record. Curr. Biol. 27, R558–R564 (2017).
Williams, T. M. in Whales, Whaling, and Ocean Ecosystems (eds Estes, J. A. et al.) Ch. 15 (Univ. California Press, 2006).
Tackaberry, J. E. et al. From a calf’s perspective: humpback whale nursing behavior on two US feeding grounds. PeerJ 8, e8538 (2020).
Huang, S.-L., Chou, L.-S. & Ni, I.-H. Comparable length at weaning in cetaceans. Mar. Mamm. Sci. 25, 875–887 (2009).
Rice, D. Marine Mammals of the World: Systematics and Distribution (Society for Marine Mammalogy Special Publication, 1998).
McNamara, J. M. & Houston, A. I. The effect of a change in foraging options on intake rate and predation rate. Am. Nat. 144, 978–1000 (1994).
Mittelbach, G. G. Foraging efficiency and body size: a study of optimal diet and habitat use by bluegills. Ecology 62, 1370–1386 (1981).
Robbins, C. T. et al. Optimizing protein intake as a foraging strategy to maximize mass gain in an omnivore. Oikos 116, 1675–1682 (2007).
Werth, A. J. et al. Filtration area scaling and evolution in mysticetes: trophic niche partitioning and the curious cases of sei and pygmy right whales. Biol. J. Linn. Soc. 125, 264–279 (2018).
Leslie, M. S., Peredo, C. M. & Pyenson, N. D. Norrisanima miocaena, a new generic name and redescription of a stem balaenopteroid mysticete (Mammalia, Cetacea) from the Miocene of California. PeerJ 7, e7629 (2019).
Marx, F. G. & Uhen, M. D. Climate, critters, and cetaceans: Cenozoic drivers of the evolution of modern whales. Science 327, 993–996 (2010).
Perrin, W. F. Why are there so many kinds of whales and dolphins? Bioscience 41, 460–462 (1991).
Kot, B. W., Sears, R., Zbinden, D., Borda, E. & Gordon, M. S. Rorqual whale (Balaenopteridae) surface lunge‐feeding behaviors: standardized classification, repertoire diversity, and evolutionary analyses. Mar. Mamm. Sci. 30, 1335–1357 (2014).
Segre, P. S. et al. Scaling of maneuvering performance in baleen whales: larger whales outperform expectations. J. Exp. Biol. 225, jeb243224 (2022).
Kawamura, A. A review of food of balaenopterid whales. Sci. Rep. Whales Res. Inst. 32, 155–197 (1980).
Iwata, T. et al. Tread-water feeding of Bryde’s whales. Curr. Biol. 27, R1154–R1155 (2017).
McMillan, C. J., Towers, J. R. & Hildering, J. The innovation and diffusion of “trap‐feeding,” a novel humpback whale foraging strategy. Mar. Mamm. Sci. 35, 779–796 (2019).
Robbins, J. & Mattila, D. Estimating Humpback Whale (Megaptera novaeangliae) Entanglement Rates on the Basis of Scar Evidence (Northeast Fisheries Science Center, 2004).
Horwood, J. in Encyclopedia of Marine Mammals 2nd edn (eds Wursig, B et al.) 1001–1003 (Elsevier, 2009).
Haug, T., Lindstrøm, U. & Nilssen, K. T. Variations in minke whale (Balaenoptera acutorostrata) diet and body condition in response to ecosystem changes in the Barents Sea. Sarsia 87, 409–422 (2002).
García-Vernet, R., Borrell, A., Víkingsson, G., Halldórsson, S. D. & Aguilar, A. Ecological niche partitioning between baleen whales inhabiting Icelandic waters. Prog. Oceanogr. 199, 102690 (2021).
Cade, D. E., Carey, N., Domenici, P., Potvin, J. & Goldbogen, J. A. Predator-informed looming stimulus experiments reveal how large filter feeding whales capture highly maneuverable forage fish. Proc. Natl Acad. Sci. USA 117, 472–478 (2020).
Deméré, T. A., McGowen, M. R., Berta, A. & Gatesy, J. Morphological and molecular evidence for a stepwise evolutionary transition from teeth to baleen in mysticete whales. Syst. Biol. 57, 15–37 (2008).
Stafford, K. M., Fox, C. G. & Clark, D. S. Long-range acoustic detection and localization of blue whale calls in the northeast Pacific Ocean. J. Acoust. Soc. Am. 104, 3616–3625 (1998).
Totterdell, J. A. et al. The first three records of killer whales (Orcinus orca) killing and eating blue whales (Balaenoptera musculus). Mar. Mamm. Sci. 38, 1286–1301 (2022).
Cade, D. E., Friedlaender, A. S., Calambokidis, J. & Goldbogen, J. A. Kinematic diversity in rorqual whale feeding mechanisms. Curr. Biol. 26, 2617–2624 (2016).
Goldbogen, J. A. et al. Using digital tags with integrated video and inertial sensors to study moving morphology and associated function in large aquatic vertebrates. Anat. Rec. 300, 1935–1941 (2017).
Bierlich, K. et al. Comparing uncertainty associated with 1-, 2-, and 3D aerial photogrammetry-based body condition measurements of baleen whales. Front. Mar. Sci. 8, 1729 (2021).
Cade, D. E. et al. Tools for integrating inertial sensor data with video bio-loggers, including estimation of animal orientation, motion, and position. Anim. Biotelemetry https://doi.org/10.1186/s40317-021-00256-w (2021).
Cade, D. E., Barr, K. R., Calambokidis, J., Friedlaender, A. S. & Goldbogen, J. A. Determining forward speed from accelerometer jiggle in aquatic environments. J. Exp. Biol. 221, jeb170449 (2018).
Wilson, R. P. et al. All at sea with animal tracks; methodological and analytical solutions for the resolution of movement. Deep Sea Res. II 54, 193–210 (2007).
Potvin, J., Cade, D. E., Werth, A. J., Shadwick, R. E. & Goldbogen, J. A. A perfectly inelastic collision: bulk prey engulfment by baleen whales and dynamical implications for the world’s largest cetaceans. Am. J. Phys. 88, 851–863 (2020).
Torres, W. I. & Bierlich, K. MorphoMetriX: a photogrammetric measurement GUI for morphometric analysis of megafauna. J. Open Source Softw. 5, 1825 (2020).
Suter, H. & Houston, A. I. How to model optimal group size in social carnivores. Am. Nat. 197, 473–485 (2021).
Hazen, E. L., Friedlaender, A. S. & Goldbogen, J. A. Blue whale (Balaenoptera musculus) optimize foraging efficiency by balancing oxygen use and energy gain as a function of prey density. Sci. Adv. 1, e1500469 (2015).
Doniol-Valcroze, T., Lesage, V., Giard, J. & Michaud, R. Optimal foraging theory predicts diving and feeding strategies of the largest marine predator. Behav. Ecol. 22, 880–888 (2011).
Gough, W. T. et al. Fast and furious: energetic tradeoffs and scaling of high-speed foraging in rorqual whales. Integr. Org. Biol. 4, obac038 (2022).
Laws, R. M. The ecology of the Southern Ocean. Am. Sci. 73, 26–40 (1985).
Brown, S. & Lockyer, C. in Antarctic Ecology Vol. 2 (ed. Laws, R. M.) (Academic Press, 1984).
Peters, R. H. The Ecological Implications of Body Size Vol. 2 Ch. 7 (Cambridge Univ. Press, 1986).
Rall, B. C. et al. Universal temperature and body-mass scaling of feeding rates. Phil. Trans. R. Soc. B 367, 2923–2934 (2012).
Evans, E. & Miller, D. Comparative nutrition, growth and longevity. Proc. Nutr. Soc. 27, 121–129 (1968).
Farlow, J. O. A consideration of the trophic dynamics of a Late Cretaceous large‐dinosaur community (Oldman Formation). Ecology 57, 841–857 (1976).
Harestad, A. S. & Bunnel, F. Home range and body weight – a reevaluation. Ecology 60, 389–402 (1979).
Schoener, T. W. Sizes of feeding territories among birds. Ecology 49, 123–141 (1968).
Calder, W. A. in Avian Energetics (ed. Paynter, R. A.) 86–151 (Nuttall Ornithological Club, 1974).
Savage, V. M., Deeds, E. J. & Fontana, W. Sizing up allometric scaling theory. PLoS Comp. Biol. 4, e1000171 (2008).
Kolokotrones, T., Savage, V., Deeds, E. J. & Fontana, W. Curvature in metabolic scaling. Nature 464, 753–756 (2010).
Hudson, L. N., Isaac, N. J. & Reuman, D. C. The relationship between body mass and field metabolic rate among individual birds and mammals. J. Anim. Ecol. 82, 1009–1020 (2013).
Acknowledgements
This work was primarily funded with NSF OPP grant no. 1643877, with additional funding from ONR YIP grant no. N000141612477 and Stanford University’s Terman Fellowship. This work was authorized under NMFS permits 16111 and 23095 and ACA permit 2020-016. We wish to thank J. Dale, C. Taylor, E. Levy and P. Gray for their contributions to data collection. A special thanks is also extended to the scientists and crew of the Lawrence M Gould, especially E. Hutt and the marine techs.
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D.E.C. led the study, performed all statistical tests and led the writing of the manuscript. D.E.C., S.R.K.-R., W.T.G., J.A.G. and A.S.F. designed methodology. D.E.C., S.R.K.-R., W.T.G and J.M.J.L. analysed video and accelerometry data. K.C.B. analysed aerial photogrammetry data. D.E.C., S.R.K.-R., J.M.J.L., K.C.B., J.C., D.W.J., J.A.G. and A.S.F. collected field data. J.C., D.W.J., J.A.G. and A.S.F. acquired funding, provided resources and supervised the work. All authors contributed to review and editing.
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Extended data
Extended Data Fig. 1 Constraints on intake rate in rorqual whales.
First published in34, reproduced with permission. Three-dimensional plot crafted in Echoview v.10 using a 10x vertical exaggeration and 120 kHz data, with the spatially matched track of a tagged blue whale. Biomass estimated as in48. Two-dimensional plots are temporally linked echosounding data with the tagged whale’s depth profile. Illustrations © Alex Boersma.
Extended Data Fig. 2 Proportion of diel periods spent feeding.
Proportion of diel periods spent feeding (deployments with at least 4 hours of data in corresponding diel period).
Extended Data Fig. 3 Regressions of feeding rate on length, using only measured whales.
Regressions of feeding rate using only measured blue and humpback whales. Shallow feeding slope is slightly shallower, other differences are non-significant from the regressions in Fig. 2H-J. Slope 95% confidence intervals (CI) and F-statistics are displayed, p-values are for the 2-sided F-test that the indicated regression has a slope different than the expected scaling slope. Both axes are log scales.
Extended Data Fig. 4 Relationship of dive behavior to body length.
Lack of relationship between A) mean dive duration or B) mean dive depth and body length in AMW for daytime dives. Error bars are standard error. C) Mean dive time relative to dive depth, as a function of length, for daytime dives > 70 m. Error bars are standard error. Sample sizes listed in Extended Data Table 1.
Extended Data Fig. 5 Dive interval compared to dive duration.
AMW surface interval increases with foraging dive duration. Colors represent individual animals. Shown is data for foraging dives > 100 s and with surface intervals > 10 s. Blue whale data reproduced from Fig. 2 in53. A) Surface interval between a foraging dive and the following foraging dive (> 35 m), n = 3158 dives. B) Surface interval between a foraging dive and the preceding foraging dive, n = 3147 dives.
Extended Data Fig. 6 Proportion of total lunge duration taken up by each component of lunge feeding.
Proportion of total lunge duration taken up by each component of lunge feeding. Filtration, the component with the strongest relationship to length, demonstrates a rapidly reduction in its effect on total lunge time (and maximum lunge rate) as size decreases.
Extended Data Fig. 7 Estimation of divisions between foraging bouts.
Surface interval between foraging dives for AMW. Black bars are surface intervals from foraging dives with at least 2 lunges until the next foraging dive. Red is the surface intervals for all foraging dives. The surface interval duration corresponding to the mean of the largest fitted Gaussian curve in the bulk of the data + 3 SD was used to differentiate “foraging bouts.” That is, a “foraging bout” was defined as the combined duration of all dives where the surface interval between dives with foraging effort was less than six minutes (the dashed vertical bar). The duration of a foraging bout was thus defined from the start of the first dive to six minutes after the last foraging dive. See48 for additional justification for this method in blue and humpback whales.
Extended Data Fig. 8 Seasonal changes in predicted Antarctic minke whale (AMW).
Seasonal changes in predicted Antarctic minke whale (AMW) daily intake over a six-month feeding season. A) Day/night lengths at the field site (64.8°S, 62.7°W). The period of no darkness lasts from Nov 19 to Jan 24. The results of this model could also be interpreted as the proportion of shallow or deep lunges available at a given point in time. B) Day, night and total lunges assuming the observed feeding rates during the field season are maintained as well as the observed portion of the day (64%) and night (57%) spent feeding. Solid lines are prediction from regression (Fig. 2F); for the theoretical 3 m whale, this is an extension past observed points. C) The portion of available daylight that an AMW would have to feed to match the mean total daily feeding rates we observed in late Feb/early Mar. Whales 7 m and larger could match the observed feeding rates during peak summer even if prey conditions didn’t change, but whales 5 m and smaller would require shallower daytime prey. In all cases, twilight feeding rates were assumed to be the corresponding mean of daytime and nighttime feeding rates. D) The proportion of daylight hours a whale of different lengths would have to spend feeding at the summer solstice to match the total intake observed in Feb/Mar, given the indicated day/night ratio of caloric value per lunge.
Supplementary information
Supplementary Information
Supplementary Boxes 1–5.
Supplementary Video 1
Camera data for two minke whales, highlighting the three phases of lunge feeding. Credit for illustrations: Audrey Nguyen.
Supplementary Video 2
Identification of start and end frames of engulfment to determine VGBest (see Fig. 1a).
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Cade, D.E., Kahane-Rapport, S.R., Gough, W.T. et al. Minke whale feeding rate limitations suggest constraints on the minimum body size for engulfment filtration feeding. Nat Ecol Evol 7, 535–546 (2023). https://doi.org/10.1038/s41559-023-01993-2
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DOI: https://doi.org/10.1038/s41559-023-01993-2