Function of the dorsal fin in bluegill sunfish: Motor patterns during four distinct locomotor behaviors

Journal of Morphology
B JayneGeorge V Lauder

Abstract

The median fins of fishes are key features of locomotor morphology which function as complex control surfaces during a variety of behaviors. However, very few studies have experimentally assessed median fin function, as most workers focus on axial structures. In particular, the dorsal fin of many teleost fishes possesses both spiny anterior and soft posterior portions which may function separately during locomotion. We analyzed the function of the soft region of the dorsal fin and of the dorsal inclinator (Di) muscles which are the primary muscles responsible for lateral flexion. We used electromyography to measure in vivo Di activity, as well as activity of the red myomeric muscles located at a similar longitudinal position. We quantified motor patterns during four locomotor behaviors: braking and three propulsive behaviors (steady swimming, kick and glide swimming, and C-starts). During the three propulsive swimming behaviors, the timing of Di activity was more similar to that of ipsilateral red myomeric muscle rather than to contralateral myomeric activity, whereas during braking the timing of activity of the Di muscles was similar to that of the contralateral myomeric musculature. During the three propulsive behaviors, when...Continue Reading

References

Jan 1, 1974·Experimental Brain Research·S Grillner
Jul 1, 1994·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·B C Jayne, G V Lauder
Jul 16, 1993·Science·L C RomeD Corda

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Citations

Mar 27, 2001·Journal of Morphology·T R ConsiE R Edelman
Jun 21, 2006·The Journal of Comparative Neurology·Henning Schneider, Beth Sulner
Aug 3, 2007·Bioinspiration & Biomimetics·George V LauderMeliha Bozkurttas
Aug 3, 2007·Bioinspiration & Biomimetics·Rajat MittalPeter Madden
Jun 29, 2012·Integrative and Comparative Biology·George V LauderSilas Alben
May 21, 2019·Biomimetics·Anthony P MignanoGeorge V Lauder
Apr 22, 2011·Biology Letters·Brooke E FlammangTyson E Strand
May 3, 2007·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·James C Liao
Aug 1, 2013·Clinical & Translational Immunology·David E GyorkiCharlotte E Ariyan
Jan 26, 2021·Applied Bionics and Biomechanics·Xiaohu Li
Oct 22, 2016·Zoology : Analysis of Complex Systems, ZACS·Brooke E Flammang, George V Lauder
Jan 12, 2013·The Journal of Experimental Biology·Iman Borazjani
Jan 11, 2007·The Journal of Experimental Biology·E M Standen, G V Lauder
Aug 11, 2007·The Journal of Experimental Biology·George V LauderPeter G A Madden
Jul 28, 2012·The Journal of Experimental Biology·Brad A ChadwellMiriam A Ashley-Ross
Jul 28, 2012·The Journal of Experimental Biology·Brad A ChadwellMiriam A Ashley-Ross
Feb 5, 2008·The Journal of Experimental Biology·Brooke E Flammang, George V Lauder
Oct 22, 2008·The Journal of Experimental Biology·Eric D Tytell, George V Lauder
Dec 13, 2005·The Journal of Experimental Biology·Eliot G Drucker, George V Lauder
Feb 10, 2004·The Journal of Experimental Biology·Paul W Webb
Jan 28, 2003·The Journal of Experimental Biology·Eliot G Drucker, George V Lauder
Dec 16, 2006·The Journal of Experimental Biology·Timothy E Higham
Jan 1, 2008·The Journal of Experimental Biology·Eric D TytellGeorge V Lauder
May 21, 2021·Bioinspiration & Biomimetics·David G Matthews, George V Lauder

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