Speed limits on swimming of fishes and cetaceans

Iosilevskii, Gil; Weihs, D.

doi:10.1098/rsif.2007.1073

Cited by 66 publications

(43 citation statements)

References 19 publications

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“…If the flying fish had used their predicted stride length of 0.6 to 0.8 times L, maximum swimming speed would have been predicted to reach 3.87 to 5.15 m s −1 when jumping from the water surface. Using stroboscopic filming methods, Davenport (1994) ), a speed shown to be the maximum cavitations-free velocity (Iosilevskii & Weihs 2008). Furthermore, measured tail beat frequency (stroke cycle frequency) and predicted maximum swimming speeds of the flying fish in the present study were lower than those of previous studies.…”

Section: Discussioncontrasting

confidence: 55%

Take-off performance of flying fish Cypselurus heterurus doederleini measured with miniature acceleration data loggers

Makiguchi¹,

Kuramochi²,

Iwane³

et al. 2013

Aquat. Biol.

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Section: Discussioncontrasting

confidence: 55%

Take-off performance of flying fish Cypselurus heterurus doederleini measured with miniature acceleration data loggers

Makiguchi¹,

Kuramochi²,

Iwane³

et al. 2013

Aquat. Biol.

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“…, recent theoretical work suggests that the maximum swimming speed of fish and cetaceans can attain at shallow depth is in the order of 10-15 m s 21 [14]. Clearly, work using modern recording techniques (e.g.…”

mentioning

confidence: 99%

How sailfish use their bills to capture schooling prey

et al. 2014

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The istiophorid family of billfishes is characterized by an extended rostrum or 'bill'. While various functions (e.g. foraging and hydrodynamic benefits) have been proposed for this structure, until now no study has directly investigated the mechanisms by which billfishes use their rostrum to feed on prey. Here, we present the first unequivocal evidence of how the bill is used by Atlantic sailfish (Istiophorus albicans) to attack schooling sardines in the open ocean. Using high-speed video-analysis, we show that (i) sailfish manage to insert their bill into sardine schools without eliciting an evasive response and (ii) subsequently use their bill to either tap on individual prey targets or to slash through the school with powerful lateral motions characterized by one of the highest accelerations ever recorded in an aquatic vertebrate. Our results demonstrate that the combination of stealth and rapid motion make the sailfish bill an extremely effective feeding adaptation for capturing schooling prey.

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“…As such, bubble entropy is the driving force behind cavitation in water over a wide range of conditions relevant in biology [34][35][36][37][38][39][40][41][42][43][44][45][46][47] and engineering [48][49][50][51]. Since the bubbles are essentially completely empty cavities in the liquid at the conditions studied here, their entropy is exclusively a property of the liquid-vapor interface.…”

Section: Resultsmentioning

confidence: 99%

Effect of entropy on the nucleation of cavitation bubbles in water under tension

Menzl

Dellago

2016

The Journal of Chemical Physics

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Water can exist in a metastable liquid state under tension for long times before the system relaxes into the vapor via cavitation, i.e., bubble nucleation. Microscopic information on the cavitation process can be extracted from experimental data by use of the nucleation theorem, which relates measured cavitation rates to the size of the critical bubble. To apply the nucleation theorem to experiments performed along an isochoric path, for instance, in cavitation experiments in mineral inclusions, knowledge of the bubble entropy is required. Using computer simulations, we compute the entropy of bubbles in water as a function of their volume over a wide range of tensions from free energy calculations. We find that the bubble entropy is an important contribution to the free energy which significantly lowers the barrier to bubble nucleation, thereby facilitating cavitation. Furthermore, the bubble entropy per surface area depends on the curvature of the liquid-vapor interface, decreasing approximately linearly with its mean curvature over the studied range of bubble volumes. At room temperature, the entropy of a flat liquid-vapor interface at ambient pressure is very similar to that of critical bubbles over a wide range of tensions, which justifies the use of the former as an approximation when interpreting data from experiments. Based on our simulation results, we obtain an estimate for the volume of the critical bubble from experimentally measured cavitation rates.

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Speed limits on swimming of fishes and cetaceans

Cited by 66 publications

References 19 publications

Take-off performance of flying fish Cypselurus heterurus doederleini measured with miniature acceleration data loggers

Take-off performance of flying fish Cypselurus heterurus doederleini measured with miniature acceleration data loggers

How sailfish use their bills to capture schooling prey

Effect of entropy on the nucleation of cavitation bubbles in water under tension

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