Lauritzen, D.V.*; Hertel, F.; Gordon, M.S.: Kinematics of Salmon Leaping Up Waterfalls Fish ladders have been used for hundreds of years to help migratory fishes move upstream past human-made obstacles such as dams. The designs of these ladders appear to have given little consideration to the behaviors and leaping abilities of the fishes they are […]
year: 2001
Function of the teleost dorsal fin experimental analysis of wake forces in sunfish
DRUCKER, E.G.*; LAUDER, G.V.: Function of the teleost dorsal fin: experimental analysis of wake forces in sunfish A major structural transformation characterizing the evolution of teleost fishes is the elaboration of the dorsal fin into anterior spiny and posterior soft-rayed portions. As yet, however, there are no hydrodynamic data on the functions served by these […]
Material properties shape dynamical responses of hydrozoan jellyfish
GOLDMAN, E.B.*; DANIEL, T. L.: Material properties shape dynamical responses of hydrozoan jellyfish Radially symmetrical and composed of acellular mesoglea, two cell layers, and a primitive nervous system, jellyfish are an elegantly simple launching point to investigate how material properties of the musculoskeletal system shape the dynamics of locomotion. Mesoglea, composed of mucopolysaccharides, collagen, and […]
Force generation by undulatory swimming at intermediate Reynolds numbers in tunicate larvae (Botrylloides, sp)
MCHENRY, M.J.: Force generation by undulatory swimming at intermediate Reynolds numbers in tunicate larvae (Botrylloides, sp.) Despite recent advances in computational modeling and flow visualization, the hydrodynamics of swimming animals remains a subject of debate. This is certainly the case for undulatory swimmers operating at intermediate Reynolds numbers (Re), where both inertial and viscous forces […]
Flow patterns around boxfishes Role of body keels in dynamic stability
BARTOL, I.K.*; GORDON, M.S.: Flow patterns around boxfishes: Role of body keels in dynamic stability The tropical marine boxfishes and their relatives (family Ostraciidae) are some of the most highly specialized living bony fishes. The forward 2/3 to 3/4 of their bodies are covered by rigid bony tests, which restrict body movements to their fins […]
Fast Start Behaviors of Fish Lacking Mauthner Neurons
Hale, M.E.: Fast Start Behaviors of Fish Lacking Mauthner Neurons The paired Mauthner neurons (M-cells) are used by fishes to initiate the C-start type of startle response. During C-starts, a fish turns rapidly away from an offending stimulus with a “C” shaped body bend. Mauthner neurons may also function in S-starts, in which the initial […]
Escape Response Performance in the Larval Razorback Sucker, Xyrauchen texanus
Wesp, H.M.*; Gibb, A.C.: Escape Response Performance in the Larval Razorback Sucker, Xyrauchen texanus The razorback sucker, Xyrauchen texanus, is an endangered fish native to the Colorado River system. Previous research suggests that declines in wild populations are due to a lack of larval recruitment. In this study, we tested the hypothesis that poor escape […]
Boundary Layer Flow in Fish and Squid
ANDERSON, E.J.*; MCGILLIS, W.R.; GROSENBAUGH, M.A.: Boundary Layer Flow in Fish and Squid A complete hydrodynamic understanding of aquatic locomotion requires knowledge of the thin boundary layer surrounding swimming organisms. In particular, tangential forces acting on the body surface are dependent on the distribution of velocity throughout the boundary layer. Fluid velocities tangent and normal […]
Using stable isotopes approaches to explore animal physiological ecology
WOLF, B.O.: Using stable isotopes approaches to explore animal physiological ecology Stable isotope methods have been used in a number of situations to study resource use by animals and rely on the observation that the isotopic composition of an animal’s tissues reflects that of its diet. The stable isotope approach can also tell us about […]
Using Hormones to Explore Adaptation and Constraint in a Songbird
KETTERSON, E.D.*; NOLAN, Jr., V.; CASTO, J.M.; NEUDORF, D.L.; GRINDSTAFF, J.L.; PARKER-RENGA, I.: Using Hormones to Explore Adaptation and Constraint in a Songbird We take an experimental approach to the evolution of life histories and the nature of adaptation and constraint. For the past 13 years, we have manipulated plasma levels of testosterone (T) in […]
