title: Fish optimize sensing and respiration during undulatory swimming.
abstract: Previous work in fishes considers undulation as a means of propulsion without addressing how it may affect other functions such as sensing and respiration. Here we show that undulation can optimize propulsion, flow sensing and respiration concurrently without any apparent tradeoffs when head movements are coupled correctly with the movements of the body. This finding challenges a long-held assumption that head movements are simply an unintended consequence of undulation, existing only because of the recoil of an oscillating tail. We use a combination of theoretical, biological and physical experiments to reveal the hydrodynamic mechanisms underlying this concerted optimization. Based on our results we develop a parsimonious control architecture that can be used by both undulatory animals and machines in dynamic environments.
authors.affiliation: Whitney Laboratory for Marine Bioscience, Department of Biology, University of Florida, Gainesville, Florida 3261, USA.
authors.forename: O
authors.initials: O
authors.lastname: Akanyeti
authors.affiliation: Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: P J M
authors.initials: PJ
authors.lastname: Thornycroft
authors.affiliation: Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: G V
authors.initials: GV
authors.lastname: Lauder
authors.affiliation: Whitney Laboratory for Marine Bioscience, Department of Biology, University of Florida, Gainesville, Florida 3261, USA.
authors.forename: Y R
authors.initials: YR
authors.lastname: Yanagitsuru
authors.affiliation: Whitney Laboratory for Marine Bioscience, Department of Biology, University of Florida, Gainesville, Florida 3261, USA.
authors.forename: A N
authors.initials: AN
authors.lastname: Peterson
authors.affiliation: Whitney Laboratory for Marine Bioscience, Department of Biology, University of Florida, Gainesville, Florida 3261, USA.
authors.forename: J C
authors.initials: JC
authors.lastname: Liao
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D019416:Head Movements / Q000502:physiology; D053403:Lateral Line System / Q000502:physiology; D009132:Muscles / Q000502:physiology; D017686:Oncorhynchus mykiss / Q000502:physiology*; D011312:Pressure; D012119:Respiration; D013550:Swimming / Q000502:physiology*