Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China
The purple sea urchin (Heliocidaris crassispina) is one of the main drivers of ecosystem dynamics, and its reproductive cycle plays an important role in population structure and size variability. In this study, we analyzed the population structure, gonadal developmental characteristics, reproductive...
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Frontiers Media S.A.
2024-01-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2023.1337159/full |
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| author | Xinye Zhao Xinye Zhao Xinye Zhao Xiaohui Mu Yu Guo Yu Guo Yu Guo Jiayang Li Jiayang Li Zhenhua Ma Zhenhua Ma Gang Yu Gang Yu Chuanxin Qin Chuanxin Qin |
| author_facet | Xinye Zhao Xinye Zhao Xinye Zhao Xiaohui Mu Yu Guo Yu Guo Yu Guo Jiayang Li Jiayang Li Zhenhua Ma Zhenhua Ma Gang Yu Gang Yu Chuanxin Qin Chuanxin Qin |
| author_sort | Xinye Zhao |
| collection | DOAJ |
| description | The purple sea urchin (Heliocidaris crassispina) is one of the main drivers of ecosystem dynamics, and its reproductive cycle plays an important role in population structure and size variability. In this study, we analyzed the population structure, gonadal developmental characteristics, reproductive cycle and other factors influencing wild purple sea urchins from December 2021 to November 2022 in Daya Bay, Guangdong, China. The results showed that purple sea urchins showed an allometric growth pattern, there were obvious seasonal variations in the population size, and fishing pressure reduced the sea urchin populations; two-factor analysis of variance (ANOVA) and correlation analyses showed negative correlations between month (M), test diameter (TD), weight (W) and gonadal index (GI) (P> 0.01), and a positive correlation between TD, weight (W), and GI (P<0.01); the gonadal development process can be divided into recovery, growth, prematuration, maturation, and late discharge, with almost synchronous development of male and female gametes; the spawning period is from April to November, which is longer than in the temperate zones, showing two spawning peaks in April and August. The time of spawning is influenced by temperature and food. Data on the breeding cycle of sea urchins in Daya Bay were obtained in this study. This information can offer theoretical assistance in the preservation and management of both artificial nurseries and wild resources. |
| first_indexed | 2024-03-08T17:06:26Z |
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| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-03-08T17:06:26Z |
| publishDate | 2024-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-f54e50a14f6d4eb1b30daaab58cf70042024-01-04T04:50:43ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-01-011010.3389/fmars.2023.13371591337159Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, ChinaXinye Zhao0Xinye Zhao1Xinye Zhao2Xiaohui Mu3Yu Guo4Yu Guo5Yu Guo6Jiayang Li7Jiayang Li8Zhenhua Ma9Zhenhua Ma10Gang Yu11Gang Yu12Chuanxin Qin13Chuanxin Qin14College of Marine Sciences, Shanghai Ocean University, Shanghai, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaKey Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaKey Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, ChinaHainan Yazhou Bay Seed Laboratory, Sanya, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaKey Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaKey Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaKey Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, ChinaKey Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, ChinaThe purple sea urchin (Heliocidaris crassispina) is one of the main drivers of ecosystem dynamics, and its reproductive cycle plays an important role in population structure and size variability. In this study, we analyzed the population structure, gonadal developmental characteristics, reproductive cycle and other factors influencing wild purple sea urchins from December 2021 to November 2022 in Daya Bay, Guangdong, China. The results showed that purple sea urchins showed an allometric growth pattern, there were obvious seasonal variations in the population size, and fishing pressure reduced the sea urchin populations; two-factor analysis of variance (ANOVA) and correlation analyses showed negative correlations between month (M), test diameter (TD), weight (W) and gonadal index (GI) (P> 0.01), and a positive correlation between TD, weight (W), and GI (P<0.01); the gonadal development process can be divided into recovery, growth, prematuration, maturation, and late discharge, with almost synchronous development of male and female gametes; the spawning period is from April to November, which is longer than in the temperate zones, showing two spawning peaks in April and August. The time of spawning is influenced by temperature and food. Data on the breeding cycle of sea urchins in Daya Bay were obtained in this study. This information can offer theoretical assistance in the preservation and management of both artificial nurseries and wild resources.https://www.frontiersin.org/articles/10.3389/fmars.2023.1337159/fullHeliocidaris crassispinagonadal developmentreproductive cyclepopulation statusDaya Bay |
| spellingShingle | Xinye Zhao Xinye Zhao Xinye Zhao Xiaohui Mu Yu Guo Yu Guo Yu Guo Jiayang Li Jiayang Li Zhenhua Ma Zhenhua Ma Gang Yu Gang Yu Chuanxin Qin Chuanxin Qin Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China Frontiers in Marine Science Heliocidaris crassispina gonadal development reproductive cycle population status Daya Bay |
| title | Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China |
| title_full | Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China |
| title_fullStr | Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China |
| title_full_unstemmed | Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China |
| title_short | Assessment of annual variability in the population status and reproductive cycle of purple sea urchins (Heliocidaris crassispina, Agassiz, 1864) in Daya Bay, China |
| title_sort | assessment of annual variability in the population status and reproductive cycle of purple sea urchins heliocidaris crassispina agassiz 1864 in daya bay china |
| topic | Heliocidaris crassispina gonadal development reproductive cycle population status Daya Bay |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2023.1337159/full |
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