TY - GEN
T1 - Thermodynamics of the bladderwort feeding strike - Suction power from elastic energy storage
AU - Berg, Otto
AU - Singh, Krizma
AU - Hall, Maxwell R.
AU - Schwaner, M. Janneke
AU - Müller, Ulrike K.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The carnivorous plant bladderwort exemplifies the use of accumulated elastic energy to power motion: Respiration-driven pumps slowly load the walls of its suction traps with elastic energy (∼1 h). During a feeding strike, this energy is released suddenly to accelerate water (∼1 ms). However, due to the traps' small size and concomitant low Reynolds number, a significant fraction of the stored energy may be dissipated as viscous friction. Such losses and the mechanical reversibility of Stokes flow are thought to degrade the feeding success of other suction feeders in this size range, such as larval fish. In contrast, triggered bladderwort traps are generally successful. By mapping the energy budget of a bladderwort feeding strike, we illustrate how this smallest of suction feeders can perform like an adult fish.
AB - The carnivorous plant bladderwort exemplifies the use of accumulated elastic energy to power motion: Respiration-driven pumps slowly load the walls of its suction traps with elastic energy (∼1 h). During a feeding strike, this energy is released suddenly to accelerate water (∼1 ms). However, due to the traps' small size and concomitant low Reynolds number, a significant fraction of the stored energy may be dissipated as viscous friction. Such losses and the mechanical reversibility of Stokes flow are thought to degrade the feeding success of other suction feeders in this size range, such as larval fish. In contrast, triggered bladderwort traps are generally successful. By mapping the energy budget of a bladderwort feeding strike, we illustrate how this smallest of suction feeders can perform like an adult fish.
UR - http://www.scopus.com/inward/record.url?scp=85076448401&partnerID=8YFLogxK
U2 - 10.1093/icb/icz144
DO - 10.1093/icb/icz144
M3 - Conference contribution
VL - 59
T3 - Integrative and Comparative Biology
SP - 1597
EP - 1608
BT - Integrative and Comparative Biology
PB - Oxford University press
ER -