The Kármán gait: novel body kinematics of rainbow trout swimming in a vortex street
نویسندگان
چکیده
منابع مشابه
The Kármán gait: novel body kinematics of rainbow trout swimming in a vortex street.
Most fishes commonly experience unsteady flows and hydrodynamic perturbations during their lifetime. In this study, we provide evidence that rainbow trout Oncorhynchus mykiss voluntarily alter their body kinematics when interacting with vortices present in the environment that are not self-generated. To demonstrate this, we measured axial swimming kinematics in response to changes in known hydr...
متن کاملThe effect of flow speed and body size on Kármán gait kinematics in rainbow trout.
We have little understanding of how fish hold station in unsteady flows. Here, we investigated the effect of flow speed and body size on the kinematics of rainbow trout Kármán gaiting behind a 5 cm diameter cylinder. We established a set of criteria revealing that not all fish positioned in a vortex street are Kármán gaiting. By far the highest probability of Kármán gaiting occurred at intermed...
متن کاملThe role of the lateral line and vision on body kinematics and hydrodynamic preference of rainbow trout in turbulent flow.
The ability to detect water flow using the hair cells of the lateral line system is a unique feature found in anamniotic aquatic vertebrates. Fishes use their lateral line to locate prey, escape from predators and form cohesive schooling patterns. Despite the prevalence of complex flows in nature, almost nothing is known about the function of the lateral line and its relationship to other senso...
متن کاملNeuromuscular control of trout swimming in a vortex street: implications for energy economy during the Karman gait.
Approximating the complexity of natural locomotor conditions provides insight into the diversity of mechanisms that enable animals to successfully navigate through their environment. When exposed to vortices shed from a cylinder, fishes hold station by adopting a mode of locomotion called the Kármán gait, whereby the body of the fish displays large, lateral oscillations and the tail-beat freque...
متن کاملA kinematic model of Kármán gaiting in rainbow trout.
A mechanistic understanding of how fishes swim in unsteady flows is challenging despite its prevalence in nature. Previous kinematic studies of fish Kármán gaiting in a vortex street behind a cylinder only report time-averaged measurements, precluding our ability to formally describe motions on a cycle-by-cycle basis. Here we present the first analytical model that describes the swimming kinema...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2003
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.00209