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THE EFFECTS OF VISCOSITY ON THE AXIAL MOTOR PATTERN AND KINEMATICS OF THE AFRICAN LUNGFISH (PROTOPTERUS ANNECTENS) DURING LATERAL UNDULATORY SWIMMING

HORNER, ANGELA
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141413377

Abstract Details

2006, MS, University of Cincinnati, Arts and Sciences : Biological Sciences.
The African lungfish (Dipnoi: Protopterus annectens) naturally occurs in ephemeral freshwater, and burrows in mud to escape seasonal drought. To determine the effects on locomotion of changing viscosity, such as encountered in a variably muddy environment, I used a non-toxic PHPA polymer in solutions with viscosities of 1, 10, 100, and 1,000 centi-Stokes (cSt). During lateral undulatory swimming, the angle of maximal lateral flexion increased significantly with viscosity, particularly in the most anterior sites tested. The electromyogram (EMG) amplitude and longitudinal extent of muscle activity increased significantly with increased viscosity, although all observed axial motor patterns were posteriorly propagated and alternated between left and right sides. The distance traveled per tail beat cycle from lowest to highest viscosity decreased significantly. The phase shift between EMG onset relative to bending increased with viscosity, so that axial muscles were increasingly active during lengthening phase rather than shortening.
Dr. Bruce Jayne (Advisor)
51 p.

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Citations

  • HORNER, A. (2006). THE EFFECTS OF VISCOSITY ON THE AXIAL MOTOR PATTERN AND KINEMATICS OF THE AFRICAN LUNGFISH (PROTOPTERUS ANNECTENS) DURING LATERAL UNDULATORY SWIMMING [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141413377

    APA Style (7th edition)

  • HORNER, ANGELA. THE EFFECTS OF VISCOSITY ON THE AXIAL MOTOR PATTERN AND KINEMATICS OF THE AFRICAN LUNGFISH (PROTOPTERUS ANNECTENS) DURING LATERAL UNDULATORY SWIMMING. 2006. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141413377.

    MLA Style (8th edition)

  • HORNER, ANGELA. "THE EFFECTS OF VISCOSITY ON THE AXIAL MOTOR PATTERN AND KINEMATICS OF THE AFRICAN LUNGFISH (PROTOPTERUS ANNECTENS) DURING LATERAL UNDULATORY SWIMMING." Master's thesis, University of Cincinnati, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141413377

    Chicago Manual of Style (17th edition)

ucin1141413377
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© 2006, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.
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