Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management
In this study, we assessed the growth patterns and population characteristics of the Odontobutis potamophila in Nansi Lake to inform evidence-based management recommendations for the sustainable development of fisheries in the region. A collection of O. potamophila was taken from Nansi Lake between...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1528582/full |
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| author | Miao Xiang Miao Xiang Haoran Liu Haoran Liu Haoran Liu Bo Li Hongxi Guo Chuankun Zhu Man Wang Man Wang Jie Wang Jie Wang Songguang Xie Songguang Xie Lei Zhang Lei Zhang |
| author_facet | Miao Xiang Miao Xiang Haoran Liu Haoran Liu Haoran Liu Bo Li Hongxi Guo Chuankun Zhu Man Wang Man Wang Jie Wang Jie Wang Songguang Xie Songguang Xie Lei Zhang Lei Zhang |
| author_sort | Miao Xiang |
| collection | DOAJ |
| description | In this study, we assessed the growth patterns and population characteristics of the Odontobutis potamophila in Nansi Lake to inform evidence-based management recommendations for the sustainable development of fisheries in the region. A collection of O. potamophila was taken from Nansi Lake between August 2017 and July 2018 (except February) to estimate the age structure, growth pattern, and mortality of the population. Edge-type analysis of sagittal otoliths indicated that a single annulus was formed from March to May. The results revealed that the age structure of O. potamophila consisted of four age groups (0-3 ages), with 0-1 year-old fish comprising about 85.11% of the harvest. An isometric growth pattern was observed, with the Logistic growth function providing the best fit for combined sexes. SLt=172.94/(1+e−0.458(t−0.79))(n=591, R2 = 0.622). Total mortality (Z), natural mortality (M), and fishing mortality (F) were computed as 1.69, 0.53, and 1.16/year, respectively. Meanwhile, the exploitation rate (E) was 0.69/year, in accordance with the rule of thumb (E>0.5, the fish stock was undergoing overfishing), which indicated the stock has been overfished slightly. These results showed that brief generation-time, dominance of juvenile fish and relatively high natural mortality of the O. potamophila provide essential information on the native fish species in Nansi Lake, which may be essential for conservation strategies and artificial propagation. At the same time, these results provide critical data for sustainable fisheries management in Nansi Lake and similar ecosystems. |
| format | Article |
| id | doaj-art-9b2bc9dff8fd410485b295b8e4d102f9 |
| institution | Kabale University |
| issn | 2296-7745 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj-art-9b2bc9dff8fd410485b295b8e4d102f92025-01-23T15:22:02ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452025-01-011110.3389/fmars.2024.15285821528582Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries managementMiao Xiang0Miao Xiang1Haoran Liu2Haoran Liu3Haoran Liu4Bo Li5Hongxi Guo6Chuankun Zhu7Man Wang8Man Wang9Jie Wang10Jie Wang11Songguang Xie12Songguang Xie13Lei Zhang14Lei Zhang15Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaHuai’an Research Centre, Centre of Hydrobiology, Huai’an, ChinaHuzhou University, Huzhou, ChinaWuhan Academy of Agricultural Sciences, Wuhan, ChinaWuhan Academy of Agricultural Sciences, Wuhan, ChinaHuaiyin Normal University, Huai’an, ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaHuai’an Research Centre, Centre of Hydrobiology, Huai’an, ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaHuai’an Research Centre, Centre of Hydrobiology, Huai’an, ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaHainan University, Haikou, ChinaInstitute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaHuai’an Research Centre, Centre of Hydrobiology, Huai’an, ChinaIn this study, we assessed the growth patterns and population characteristics of the Odontobutis potamophila in Nansi Lake to inform evidence-based management recommendations for the sustainable development of fisheries in the region. A collection of O. potamophila was taken from Nansi Lake between August 2017 and July 2018 (except February) to estimate the age structure, growth pattern, and mortality of the population. Edge-type analysis of sagittal otoliths indicated that a single annulus was formed from March to May. The results revealed that the age structure of O. potamophila consisted of four age groups (0-3 ages), with 0-1 year-old fish comprising about 85.11% of the harvest. An isometric growth pattern was observed, with the Logistic growth function providing the best fit for combined sexes. SLt=172.94/(1+e−0.458(t−0.79))(n=591, R2 = 0.622). Total mortality (Z), natural mortality (M), and fishing mortality (F) were computed as 1.69, 0.53, and 1.16/year, respectively. Meanwhile, the exploitation rate (E) was 0.69/year, in accordance with the rule of thumb (E>0.5, the fish stock was undergoing overfishing), which indicated the stock has been overfished slightly. These results showed that brief generation-time, dominance of juvenile fish and relatively high natural mortality of the O. potamophila provide essential information on the native fish species in Nansi Lake, which may be essential for conservation strategies and artificial propagation. At the same time, these results provide critical data for sustainable fisheries management in Nansi Lake and similar ecosystems.https://www.frontiersin.org/articles/10.3389/fmars.2024.1528582/fullage validationlogistic growth functionOdontobutis potamophilaotolithoverfishing indicators |
| spellingShingle | Miao Xiang Miao Xiang Haoran Liu Haoran Liu Haoran Liu Bo Li Hongxi Guo Chuankun Zhu Man Wang Man Wang Jie Wang Jie Wang Songguang Xie Songguang Xie Lei Zhang Lei Zhang Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management Frontiers in Marine Science age validation logistic growth function Odontobutis potamophila otolith overfishing indicators |
| title | Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management |
| title_full | Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management |
| title_fullStr | Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management |
| title_full_unstemmed | Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management |
| title_short | Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management |
| title_sort | otolith annulus validation and population dynamics of dark sleeper odontobutis potamophila insights for sustainable fisheries management |
| topic | age validation logistic growth function Odontobutis potamophila otolith overfishing indicators |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1528582/full |
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