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A Change of Pace: How Fish Alter Kin...

Clark, Andrew David,

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A Change of Pace: How Fish Alter Kinematics With Swim Speed /

Record Type:	Electronic resources : Monograph/item
Title/Author:	A Change of Pace: How Fish Alter Kinematics With Swim Speed // Andrew David Clark.
Author:	Clark, Andrew David,
Description:	1 electronic resource (128 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
Contained By:	Dissertations Abstracts International86-11B.
Subject:	Biomechanics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32038197
ISBN:	9798315744177

A Change of Pace: How Fish Alter Kinematics With Swim Speed /
Clark, Andrew David,

A Change of Pace: How Fish Alter Kinematics With Swim Speed /Andrew David Clark. - 1 electronic resource (128 pages)

Source: Dissertations Abstracts International, Volume: 86-11, Section: B.

Fishes swim in diverse and complicated ways, but too often, we tend to reduce their swimming to simplified models, which facilitates analysis, but limits complexity. Even when scientists study complex behaviors, they often ignore how context can influence their results. Here, we aimed to address this gap in the literature by first challenging the form equals function model, then by quantifying various features of maneuvering, with an emphasis on how speed impacts kinematics. First, we compared steady swimming bluegill sunfish (Lepomis macrochirus) with steady swimming pumpkinseed sunfish (Lepomis gibbosus) to understand their forms and how their forms contribute to their kinematics. Based on prevailing thought, due to how morphologically similar the two species are, we should have found very few kinematic differences. However, we quantified signficantly different caudal fin kinematics that suggest these morphometrically similar species are functionally distinct. We also measured heart rate in bluegill to understand how it changes with swimming speed and maneuvering. By inserting electrodes into the fish's pericardial cavity and by filming and tracking their movements over time at a range of flow speeds, we concluded that heart rate changes on a very small scale as bluegill swim steadily at higher speeds, but that heart rate does not do a good job of capturing the costs of maneuvering. We also quantified fin and body kinematics during braking at various speeds. We observed distinct speed-related differences in how much force bluegill produce with their fins at increasing speeds, and also quantified how they handled stability during braking. Finally, we explored how bluegill solved the tradeoff between maximizing torque and minimizing moment of inertia during turning. Overall, we concluded that bluegill handle these tradeoffs differently at different turn speeds such that fast turns are not simply sped up slow turns, but are kinematically distinct.

English

ISBN: 9798315744177Subjects--Topical Terms:

548685
Biomechanics.
Subjects--Index Terms:

Bluegill

A Change of Pace: How Fish Alter Kinematics With Swim Speed /
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100 1 $a Clark, Andrew David, $e author. $3 3828397
245 1 2 $a A Change of Pace: How Fish Alter Kinematics With Swim Speed / $c Andrew David Clark.
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300 $a 1 electronic resource (128 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
500 $a Advisors: Tytell, Eric D. Committee members: Dopman, Erik B.; Fish, Frank E.; Trimmer, Barry A.
502 $b Ph.D. $c Tufts University $d 2025.
520 $a Fishes swim in diverse and complicated ways, but too often, we tend to reduce their swimming to simplified models, which facilitates analysis, but limits complexity. Even when scientists study complex behaviors, they often ignore how context can influence their results. Here, we aimed to address this gap in the literature by first challenging the form equals function model, then by quantifying various features of maneuvering, with an emphasis on how speed impacts kinematics. First, we compared steady swimming bluegill sunfish (Lepomis macrochirus) with steady swimming pumpkinseed sunfish (Lepomis gibbosus) to understand their forms and how their forms contribute to their kinematics. Based on prevailing thought, due to how morphologically similar the two species are, we should have found very few kinematic differences. However, we quantified signficantly different caudal fin kinematics that suggest these morphometrically similar species are functionally distinct. We also measured heart rate in bluegill to understand how it changes with swimming speed and maneuvering. By inserting electrodes into the fish's pericardial cavity and by filming and tracking their movements over time at a range of flow speeds, we concluded that heart rate changes on a very small scale as bluegill swim steadily at higher speeds, but that heart rate does not do a good job of capturing the costs of maneuvering. We also quantified fin and body kinematics during braking at various speeds. We observed distinct speed-related differences in how much force bluegill produce with their fins at increasing speeds, and also quantified how they handled stability during braking. Finally, we explored how bluegill solved the tradeoff between maximizing torque and minimizing moment of inertia during turning. Overall, we concluded that bluegill handle these tradeoffs differently at different turn speeds such that fast turns are not simply sped up slow turns, but are kinematically distinct.
546 $a English
590 $a School code: 0234
650 4 $a Biomechanics. $3 548685
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Behavioral sciences. $3 529833
650 4 $a Morphology. $3 591167
653 $a Bluegill
653 $a Braking
653 $a EKG
653 $a Fish
653 $a Pumpkinseed
653 $a Turning
690 $a 0648
690 $a 0602
690 $a 0792
690 $a 0287
710 2 $a Tufts University. $b Biology. $e degree granting institution. $3 3816852
720 1 $a Tytell, Eric D. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-11B.
790 $a 0234
791 $a Ph.D.
792 $a 2025
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32038197