Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep
Hydroacoustics is a non-invasive fish stock assessment sampling technique that plays an important role in fishery science and management. However, non-standard hydroacoustic surveys could lead to biased results, and the factor of the sampling period (e.g., season and diel cycle) is extremely critica...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.1119410/full |
| _version_ | 1797942548598095872 |
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| author | Feng Mei Feng Mei Chaoshuo Zhang Chaoshuo Zhang Bin Luo Bin Luo Dongxu Zhang Dongxu Zhang Shaoqiu Hu Shaoqiu Hu Jianghui Bao Yuxi Lian Daxian Zhao Daxian Zhao Ming Duan |
| author_facet | Feng Mei Feng Mei Chaoshuo Zhang Chaoshuo Zhang Bin Luo Bin Luo Dongxu Zhang Dongxu Zhang Shaoqiu Hu Shaoqiu Hu Jianghui Bao Yuxi Lian Daxian Zhao Daxian Zhao Ming Duan |
| author_sort | Feng Mei |
| collection | DOAJ |
| description | Hydroacoustics is a non-invasive fish stock assessment sampling technique that plays an important role in fishery science and management. However, non-standard hydroacoustic surveys could lead to biased results, and the factor of the sampling period (e.g., season and diel cycle) is extremely critical as it can greatly affect hydroacoustic results. Efforts to improve the accuracy and credibility of the hydroacoustic survey results are getting more and more attention. Thus, we conducted two diel hydroacoustic surveys in situ in summer and winter to detect whether there were diel and seasonal differences in density, Target Strength (TS) and vertical distribution of fish. The results indicated that nighttime had significantly higher fish mean density than daytime in summer and winter. No significant difference between summer and winter daytime, however, significant difference between summer and winter nighttime, but this bias could be accepted from the fisheries management perspective; The mean TS of the summer daytime was significantly higher than that of summer nighttime, winter daytime and winter nighttime, but there were no significant differences among summer nighttime, winter daytime, and winter nighttime, mainly due to mean TS may be overestimated from fish schooling behavior during summer daytime; The fish vertical distribution had significant seasonal correlations and was more dispersed in different water layers during the nighttime, proving that the assessment was better at nighttime than during the daytime. Consequently, the hydroacoustic surveys in Yudong Reservoir and other similar plateau deep water reservoirs should be performed at nighttime, which will yield relatively accurate density and TS, and dispersed vertical distribution of fish. |
| first_indexed | 2024-04-10T20:10:14Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-10T20:10:14Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-7c06b76a05174fd799a0e815122b30912023-01-26T13:40:26ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452023-01-01910.3389/fmars.2022.11194101119410Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deepFeng Mei0Feng Mei1Chaoshuo Zhang2Chaoshuo Zhang3Bin Luo4Bin Luo5Dongxu Zhang6Dongxu Zhang7Shaoqiu Hu8Shaoqiu Hu9Jianghui Bao10Yuxi Lian11Daxian Zhao12Daxian Zhao13Ming Duan14School of Life Sciences, Nanchang University, Nanchang, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaCollege of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaCollege of Animal Science, Guizhou University, Guiyang, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaCollege of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaCollege of Fisheries, Huazhong Agricultural University, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaCollege of Life Science, Anqing Normal University, Anqing, ChinaSchool of Life Sciences, Nanchang University, Nanchang, ChinaFisheries Laboratory, Chongqing Research Institute of Nanchang University, Chongqing, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaHydroacoustics is a non-invasive fish stock assessment sampling technique that plays an important role in fishery science and management. However, non-standard hydroacoustic surveys could lead to biased results, and the factor of the sampling period (e.g., season and diel cycle) is extremely critical as it can greatly affect hydroacoustic results. Efforts to improve the accuracy and credibility of the hydroacoustic survey results are getting more and more attention. Thus, we conducted two diel hydroacoustic surveys in situ in summer and winter to detect whether there were diel and seasonal differences in density, Target Strength (TS) and vertical distribution of fish. The results indicated that nighttime had significantly higher fish mean density than daytime in summer and winter. No significant difference between summer and winter daytime, however, significant difference between summer and winter nighttime, but this bias could be accepted from the fisheries management perspective; The mean TS of the summer daytime was significantly higher than that of summer nighttime, winter daytime and winter nighttime, but there were no significant differences among summer nighttime, winter daytime, and winter nighttime, mainly due to mean TS may be overestimated from fish schooling behavior during summer daytime; The fish vertical distribution had significant seasonal correlations and was more dispersed in different water layers during the nighttime, proving that the assessment was better at nighttime than during the daytime. Consequently, the hydroacoustic surveys in Yudong Reservoir and other similar plateau deep water reservoirs should be performed at nighttime, which will yield relatively accurate density and TS, and dispersed vertical distribution of fish.https://www.frontiersin.org/articles/10.3389/fmars.2022.1119410/fullhydroacousticdielseasonalmean densitymean TSvertical distribution |
| spellingShingle | Feng Mei Feng Mei Chaoshuo Zhang Chaoshuo Zhang Bin Luo Bin Luo Dongxu Zhang Dongxu Zhang Shaoqiu Hu Shaoqiu Hu Jianghui Bao Yuxi Lian Daxian Zhao Daxian Zhao Ming Duan Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep Frontiers in Marine Science hydroacoustic diel seasonal mean density mean TS vertical distribution |
| title | Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep |
| title_full | Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep |
| title_fullStr | Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep |
| title_full_unstemmed | Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep |
| title_short | Effects of season and diel cycle on hydroacoustic estimates of density, Target Strength, and vertical distribution of fish in Yudong Reservoir, a plateau deep water reservoir in southwest China in a plateau deep |
| title_sort | effects of season and diel cycle on hydroacoustic estimates of density target strength and vertical distribution of fish in yudong reservoir a plateau deep water reservoir in southwest china in a plateau deep |
| topic | hydroacoustic diel seasonal mean density mean TS vertical distribution |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.1119410/full |
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