Why whales are big but not bigger: Physiological drivers and ecological limits in the age of ocean giants.
Jeremy A. Goldbogen,David E. Cade,Danuta M. Wisniewska,Jean Potvin,Paolo S. Segre,Matthew S. Savoca,Elliott L. Hazen,Elliott L. Hazen,Elliott L. Hazen,Max F. Czapanskiy,Shirel R. Kahane-Rapport,S. L. DeRuiter,Shane Gero,Pernille Tønnesen,William T. Gough,M. B. Hanson,M. M. Holt,Frants H. Jensen,Malene Simon,Alison K. Stimpert,Patricia Arranz,David Johnston,Douglas P. Nowacek,Susan E. Parks,Fleur Visser,Fleur Visser,Ari S. Friedlaender,Peter L. Tyack,Peter T. Madsen,Nicholas D. Pyenson,Nicholas D. Pyenson +30 more
TL;DR: Gigantism in whales is both driven and limited by prey capture and availability, and filter feeding provides an evolutionary pathway to extremes in body size that is not available to lineages that must feed on one prey at a time.
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Abstract: The largest animals are marine filter feeders, but the underlying mechanism of their large size remains unexplained. We measured feeding performance and prey quality to demonstrate how whale gigantism is driven by the interplay of prey abundance and harvesting mechanisms that increase prey capture rates and energy intake. The foraging efficiency of toothed whales that feed on single prey is constrained by the abundance of large prey, whereas filter-feeding baleen whales seasonally exploit vast swarms of small prey at high efficiencies. Given temporally and spatially aggregated prey, filter feeding provides an evolutionary pathway to extremes in body size that are not available to lineages that must feed on one prey at a time. Maximum size in filter feeders is likely constrained by prey availability across space and time.
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Citations
UAV remote sensing applications in marine monitoring: Knowledge visualization and review.
Zongyao Yang,Xueying Yu,Simon Dedman,Massimiliano Rosso,Jingmin Zhu,Jiaqi Yang,Yuxiang Xia,Yi Chao Tian,Guangping Zhang,Jingzhen Wang +9 more
TL;DR: In this paper , a review of the application of UAVs in marine management mapping, marine disaster and environmental monitoring, and marine wildlife monitoring is presented, which aims to promote the extensive application of remote sensing in the field of marine research.
175
Baleen whale prey consumption based on high-resolution foraging measurements.
Matthew S. Savoca,Max F. Czapanskiy,Shirel R. Kahane-Rapport,William T. Gough,James A. Fahlbusch,K. C. Bierlich,K. C. Bierlich,Paolo S. Segre,Jacopo Di Clemente,Jacopo Di Clemente,Jacopo Di Clemente,Gwenith S. Penry,David N. Wiley,John Calambokidis,Douglas P. Nowacek,David Johnston,Nicholas D. Pyenson,Nicholas D. Pyenson,Ari S. Friedlaender,Elliott L. Hazen,Elliott L. Hazen,Elliott L. Hazen,Jeremy A. Goldbogen +22 more
TL;DR: This article used tags deployed on seven baleen whale (Mysticeti) species in conjunction with acoustic measurements of prey density to calculate prey consumption at daily to annual scales from the Atlantic, Pacific and Southern Oceans.
135
Operational Protocols for the Use of Drones in Marine Animal Research
Vincent Raoult,Andrew P. Colefax,Blake M. Allan,Daniele Db Cagnazzi,Nataly Castelblanco-Martínez,Nataly Castelblanco-Martínez,Daniel Ierodiaconou,David Johnston,Sarah Sofía Landeo-Yauri,Mitchell B. Lyons,Vanessa Pirotta,Gail Schofield,Paul A. Butcher +12 more
- 25 Sep 2020
TL;DR: The protocols outlined herein will be of use to researchers interested in incorporating drones as a tool into their research on marine animals and will help form consistent approaches for drone-based studies in the future.
106
A hybrid underwater robot for multidisciplinary investigation of the ocean twilight zone.
Dana R. Yoerger,Annette F. Govindarajan,Jonathan C. Howland,Joel K. Llopiz,Peter H. Wiebe,Molly Curran,Justin Fujii,Daniel Gomez-Ibanez,Kakani Katija,Bruce H. Robison,Brett Hobson,M. Risi,Stephen M. Rock +12 more
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TL;DR: Mesobot as discussed by the authors is an autonomous underwater vehicle that can survey and track slow-moving animals and correlate the animals' movements with critical environmental measurements in the ocean's midwaters.
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Field measurements reveal exposure risk to microplastic ingestion by filter-feeding megafauna
Shirel R. Kahane-Rapport,Max F. Czapanskiy,James A. Fahlbusch,Ari S. Friedlaender,John Calambokidis,Elliott L. Hazen,J. Goldbogen,Matthew S. Savoca +7 more
TL;DR: In this article , the authors combine depth-integrated microplastic data from the California Current Ecosystem with high-resolution foraging measurements from 191 tag deployments on blue, fin, and humpback whales to quantify plastic ingestion rates and routes of exposure.
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