Mapping sound production by Gulf Corvina at a spawning aggregation site
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- Cite This Work
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Rowell, Timothy J. (2018). Mapping sound production by Gulf Corvina at a spawning aggregation site. In dataMares: Fisheries. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0D21VSW
- Description
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During the months of February through April, over a million Gulf Corvina (Cynoscion othonopterus) migrate to the Colorado River Delta in the Upper Gulf of California to amass a large spawning aggregation that is the focus of a large fishery based out of El Zanjón, El Golfo de Santa Clara, and San Felipe. When aggregated, male Gulf Corvina actively produce croaking sounds that can be recorded and measured. On 28 March 2014, researchers visited the spawning aggregation location to record Gulf Corvina sound production with a portable hydrophone in order to determine the spatial distribution of the aggregation and infer fish abundances across the Delta. Sound measurements indicated that the aggregation measured over 10 km in length over the survey area with regions of higher sound levels that likely were a product of higher fish abundances and reproductive behaviors. Differences were observed on the incoming and outgoing tides, with the highest levels of sound measured during the outgoing tide when spawning is known to occur. Croaking Gulf Corvina created an environment 10 times louder than normally present. This study supports the use of methods to measure fish sound production to infer spawning activity, potential abundance, and aggregation distribution.
- Scope And Content
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Contact information: Santiago Dominguez-Sanchez, santiago@gocmarineprogram.org; Catalina Lopez-Sagastegui, catalina@ucr.edu
- Date Collected
- 2014-03-28
- Date Issued
- 2018
- Research Team Head
- Researcher
- Data Manager
- Contributor
- Methods
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Sound levels were recorded with a Tascam DR-680 acoustic recorder and a High Tech Inc. hydrophone.
- Technical Details
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Software used: Microsoft Excel. RMS levels were calculated in Matlab and are calibrated for recording system and hydrophone sensitivity.
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- Languages
- English
- Spanish; Castilian
- Identifier
- Related Resource
- Timothy J. Rowell, Juan José Cota Nieto, Brad Erisman (2015): Mapeando la producción de sonido de curvina golfina en sitios de agregaciones. DataMares. InteractiveResource. https://doi.org/10.13022/M32S32
- Timothy J. Rowell, Juan José Cota Nieto, Brad Erisman (2015): Mapping sound production by Gulf Corvina at a spawning aggregation site. DataMares. InteractiveResource. https://doi.org/10.13022/M3V88X
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- License
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Creative Commons Attribution 4.0 International Public License
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- UC Regents
- Copyright
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Under copyright (US)
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" or any license applied to this work requires written permission of the copyright holder(s). Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library. Inquiries can be made to the UC San Diego Library program having custody of the work.
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Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
- Last Modified
2023-11-09