Critical swimming performance (UCRIT) is considered a good predictor of swimming capabilities in fish. To estimate UCRIT, a fish is exposed to an incrementally-increasing laminar flow of water until it cannot maintain its position against the current. The spinning task assay has been proposed as an alternative method to traditional laminar flow methods; however, these methods have not been directly compared. Thus, the goal of this study was to determine whether the spinning task assay is a suitable alternative to traditional laminar flow assays. To that end, the performance of fathead minnows in each assay was compared at three time points (14, 19 and 24 days post fertilization, dpf). In 14 dpf fish, UCRIT estimates were similar regardless of the assay used. However, at 19 and 24 dpf, UCRIT estimates derived from the two assay types were significantly different. This indicates that the assays are not equivalent to one another and that the spinning task assay is not a suitable alternative to the laminar flow assay for the determination of UCRIT.
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RESEARCH ARTICLE|
24 November 2021
A comparison of two methods for estimating critical swimming speed (UCRIT) in larval fathead minnows: the laminar flow assay and the spinning task assay
Julie C. Krzykwa,
Julie C. Krzykwa
Department of Biology, Texas Christian University, Fort Worth TX
, USA
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Gabriella S. Lamanteer,
Gabriella S. Lamanteer
Department of Biology, Texas Christian University, Fort Worth TX
, USA
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Marlo K. Sellin Jeffries
Marlo K. Sellin Jeffries
*
Department of Biology, Texas Christian University, Fort Worth TX
, USA
*Author for correspondence: m.jeffries@tcu.edu
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Julie C. Krzykwa
Department of Biology, Texas Christian University, Fort Worth TX
, USA
Gabriella S. Lamanteer
Department of Biology, Texas Christian University, Fort Worth TX
, USA
Marlo K. Sellin Jeffries
*
Department of Biology, Texas Christian University, Fort Worth TX
, USA
*Author for correspondence: m.jeffries@tcu.edu
Received:
11 May 2021
Accepted:
18 Nov 2021
Online ISSN: 1477-9145
Print ISSN: 0022-0949
Funding Group:
- Award Group:
- Funder(s): Texas Christian University
- Funder(s):
Funding Group:
- Award Group:
- Funder(s): Society of Environmental Toxicology and Chemistry
- Funder(s):
J Exp Biol jeb.242856.
Article history
Received:
11 May 2021
Accepted:
18 Nov 2021
Currently Viewing Accepted Manuscript - Newer Version Available
14 Dec 2021
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Citation
Julie C. Krzykwa, Gabriella S. Lamanteer, Marlo K. Sellin Jeffries; A comparison of two methods for estimating critical swimming speed (UCRIT) in larval fathead minnows: the laminar flow assay and the spinning task assay. J Exp Biol 2021; jeb.242856. doi: https://doi.org/10.1242/jeb.242856
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