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Keywords: Pectoral fin
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Journal Articles
J Exp Biol (2020) 223 (24): jeb235226.
Published: 15 December 2020
... that naturally induce winter quiescence. Kinetics Wrasse Pectoral fin Swimming Kinetics Abductor superficialis Locomotion Torpor Temperature is a key abiotic factor that affects most physiological processes and behavior in ectotherms. As a result, water temperature is important...
Journal Articles
J Exp Biol (2020) 223 (21): jeb227280.
Published: 3 November 2020
... textured environments and regularly interact with textured surfaces. Here we explore texture sensation in a different type of vertebrate limb by investigating touch and potential texture encoding mechanisms in the pectoral fins of fishes, the forelimb homologs. We investigated the pectoral fins...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (4): 705–712.
Published: 15 February 2017
...Valentina Di Santo; Erin L. Blevins; George V. Lauder ABSTRACT Most batoids have a unique swimming mode in which thrust is generated by either oscillating or undulating expanded pectoral fins that form a disc. Only one previous study of the freshwater stingray has quantified three-dimensional...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (21): 3435–3447.
Published: 1 November 2015
...Richard Williams, IV; Melina E. Hale ABSTRACT For many fish species, the pectoral fins serve as important propulsors and stabilizers and are precisely controlled. Although it has been shown that mechanosensory feedback from the fin ray afferent nerves provides information on ray bending...
Journal Articles
J Exp Biol (2012) 215 (15): 2703–2710.
Published: 1 August 2012
... is known about the relationship between form and function in this key vertebrate structure. In this study we demonstrate that morphological specializations of the pectoral fin rays of the benthic longhorn sculpin ( Myoxocephalus octodecimspinosus ) have specific functional consequences both within...
Journal Articles
J Exp Biol (2011) 214 (18): 3111–3123.
Published: 15 September 2011
...Matthew H. Green; Robert K. Ho; Melina E. Hale SUMMARY Pectoral fins are known to play important roles in swimming for many adult fish; however, their functions in fish larvae are unclear. We examined routine pectoral fin movement during rhythmic forward swimming and used genetic ablation to test...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2011) 214 (17): 2935–2948.
Published: 1 September 2011
... kinematics pectoral fin Swimming in negatively buoyant fish is like flight in birds: gravity will bring you down. Even though the physical properties of air and water differ dramatically, soaring birds, gliding mammals ( Bishop, 2006 ; Bishop, 2007 ), gliding underwater vehicles ( Rudnick et al...
Journal Articles
J Exp Biol (2011) 214 (7): 1181–1193.
Published: 1 April 2011
... to escape the oncoming flow. We also found that, despite the large size of its pectoral fins, E. tetrazonum is capable of producing only very weak negative lift forces with fins. These substrate-directed forces likely act in conjunction with upstream-directed frictional forces between the tail, anal...
Journal Articles
J Exp Biol (2010) 213 (23): 4043–4054.
Published: 1 December 2010
...James L. Tangorra; George V. Lauder; Ian W. Hunter; Rajat Mittal; Peter G. A. Madden; Meliha Bozkurttas SUMMARY A biorobotic pectoral fin was developed and used to study how the flexural rigidities of fin rays within a highly deformable fish fin affect the fin's propulsive forces. The design...
Journal Articles
J Exp Biol (2010) 213 (12): 2038–2047.
Published: 15 June 2010
...Kourosh Shoele; Qiang Zhu SUMMARY We numerically examine the fluid–structure interaction and force generation of a skeleton-reinforced fin that geometrically, structurally and kinematically resembles the pectoral fin of a fish during labriform swimming. This fin contains a soft membrane...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2009) 212 (16): 2679–2690.
Published: 15 August 2009
...Kourosh Shoele; Qiang Zhu SUMMARY We investigate the thrust generation capacity of a thin foil consisting of a membrane strengthened by embedded rays that is geometrically, structurally and kinematically similar to pectoral fins of bony fishes during lift-based labriform locomotion. Our numerical...
Journal Articles
J Exp Biol (2007) 210 (4): 685–698.
Published: 15 February 2007
... study quantifying the instantaneous locomotive forces generated by the pectoral fins of the bluegill sunfish ( Lepomis macrochirus Rafinesque), measured using digital particle image velocimetry (DPIV). The finite-time Lyapunov exponent (FTLE) field calculated from the DPIV data was used to determine...
Journal Articles
J Exp Biol (2007) 210 (1): 107–117.
Published: 1 January 2007
...). Both species employed their pectoral, anal and caudal fins in order to decelerate during prey capture. However, largemouth bass protracted their pectoral fins more and faster,likely contributing to the greater magnitude of deceleration in the species. The primary mechanism for increased deceleration...
Journal Articles
J Exp Biol (2006) 209 (19): 3708–3718.
Published: 1 October 2006
... and gait transitions have been shown to provide efficient locomotion across a wide range of speeds. In contrast, examination of gaits in fishes has focused on axial gaits and the transition between synchronous paired fin locomotion and axial propulsion. Because many fishes use their pectoral fins...
Journal Articles
J Exp Biol (2005) 208 (24): 4735–4746.
Published: 15 December 2005
... theoretically can limit speed for short distances. Consequently, braking ability can be important for avoiding collisions with obstacles and exploiting resources effectively in complex environments. A presumed morphological correlate of improved braking performance in fish is increased pectoral fin area...
Journal Articles
J Exp Biol (2004) 207 (24): 4175–4183.
Published: 15 November 2004
...Dean H. Thorsen; Justin J. Cassidy; Melina E. Hale SUMMARY Adult actinopterygian fishes typically perform steady forward swimming using either their pectoral fins or their body axis as the primary propulsor. In most species, when axial undulation is employed for swimming, the pectoral fins...
Journal Articles
J Exp Biol (2003) 206 (5): 813–826.
Published: 1 March 2003
... the behavioral and hydromechanical repertoire of the paired pectoral fins of rainbow trout Oncorhynchus mykiss , performing both steady rectilinear swimming and unsteady maneuvering locomotion. A combination of kinematic analysis and quantitative flow visualization (using digital particle image velocimetry...
Journal Articles
J Exp Biol (1999) 202 (18): 2413–2432.
Published: 15 September 1999
...C. D. Wilga; G. V. Lauder ABSTRACT Pectoral fins are one of the major features of locomotor design in ray-finned fishes and exhibit a well-documented phylogenetic transition from basal to derived clades. In percomorph fishes, the pectoral fins are often used to generate propulsive force via...
Journal Articles
J Exp Biol (1997) 200 (13): 1881–1893.
Published: 1 July 1997
...Mark W. Westneat; Jeffrey A. Walker ABSTRACT Labriform locomotion is a widespread swimming mechanism in fishes during which propulsive forces are generated by oscillating the pectoral fins. We examined the activity of the six major muscles that power the pectoral fin of the bird wrasse Gomphosus...
Journal Articles
J Exp Biol (1996) 199 (10): 2235–2242.
Published: 1 October 1996
...Eliot G. Drucker; Jeffrey S. Jensen ABSTRACT Swimming trials at increasing velocity were used to determine the effects of steady swimming speed on pectoral fin kinematics for an ontogenetic series of striped surfperch Embiotoca lateralis , ranging from 6 to 23 cm in standard length ( SL ). The fin...