Reproductive pattern and population dynamics of commercial red swamp crayfish (Procambarus clarkii) from China: implications for sustainable aquaculture management
文献类型：期刊论文
| 作者 | Zhang, Tanglin2,3; Li, Wei2,3; Lek, Sovan1; Li, Ruojing2,3; Xiong, Mantang2,3; Jacquin, Lisa1; Jin, Shiyu1,2,3 |
| 刊名 | PEERJ
 |
| 出版日期 | 2019-01-23 |
| 卷号 | 7页码:24 |
| 关键词 | Procambarus clarkii Spawning period Population growth Mortality and exploitation rates Sustainable management |
| ISSN号 | 2167-8359 |
| DOI | 10.7717/peerj.6214 |
| 英文摘要 | Background. The red swamp crayfish, Procambarus clarkii (Girard, 1852), is one of the most promising freshwater species for aquaculture in China. Understanding its reproductive pattern and population dynamics is crucial for sustainable management, but there is currently a lack of fundamental knowledge of commercial P. clarkii populations. Therefore, the purpose of this study was to investigate the reproductive pattern and population dynamics of commercial P. clarkii throughout the yearly cycle. Methods. A total of 2,051 crayfish (1,012 females and 1,039 males) were collected from March 2016 to February 2017 in the area of Selection and Reproduction Center of Crayfish. The reproductive pattern was evaluated by the gonadosomatic index (GSI), hepatosomatic index (HSI), ovarian development and fecundity. Growth, mortality rates and exploitation rate were estimated by electronic length frequency analysis by R package "TropFishR" based on data of cephalothorax length (CTL). Results. Our results demonstrated that spawning activities of P. clarkii took place from September to November, with a mean fecundity of 429 +/- 9 eggs per female. There were two recruitments yearly, a major one from October to November and a minor one from March to May. With respect to population growth, five growth cohorts were identified for both females and males. Crayfish grew faster but attained smaller asymptotic maximum CTL as indicated by higher growth coefficient (K), growth parameter index (empty set') and lower asymptotic CTL (L-inf). The estimates of total mortality rate (Z), natural mortality rate (M) and fishing mortality rate (F) were 1.93, 1.02, 0.91 year(-1) for females and 2.32, 0.93,1.39 year(-1) for males, which showed that the mortality of male crayfish was mainly caused by fishing. The estimates of exploitation rate (E) indicated that male crayfish were overexploited, with the values of 0.47 and 0.60 year(-1) for females and males, respectively. Discussion. P. clarkii spawned from September to November while two recruitments were observed yearly. We inferred that some eggs, prevented from hatching by low water temperature in winter, were more likely to hatch in the next spring. Moreover, the fishing mortality rate was relatively high for males, which might be related to the males-directed selection during the reproductive period. The higher values of exploitation rate in our study confirmed that males P. clarkii were overexploited and were under high fishing pressure. We thus suggest reducing fishing intensity on immature crayfish and avoid sex selection during the reproductive period to improve the overall sustainability of commercial P. clarkii populations. |
| 资助项目 | Technical Innovation Project of Science and Technology Department of Hubei Province[2016ABA123] ; Technical Innovation Project of Science and Technology Department of Hubei Province[2018ABA102] ; R & D Project of the Ministry of Science and Technology of China[2015BAD13B02] ; Special Fund for Agro-scientific Research in the Public Interest[201203081] ; Key Deployment Project of Chinese Academy of Science[KFZD-SW-106] ; China Scholarship Council |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000456675400001 |
| 出版者 | PEERJ INC |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/6542]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Zhang, Tanglin |
| 作者单位 | 1.Univ Toulouse, UMR 5174, Lab Evolut & Diversite Biol EDB, CNRS,IRD,UPS, Toulouse, France 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tanglin,Li, Wei,Lek, Sovan,et al. Reproductive pattern and population dynamics of commercial red swamp crayfish (Procambarus clarkii) from China: implications for sustainable aquaculture management[J]. PEERJ,2019,7:24. |
| APA | Zhang, Tanglin.,Li, Wei.,Lek, Sovan.,Li, Ruojing.,Xiong, Mantang.,...&Jin, Shiyu.(2019).Reproductive pattern and population dynamics of commercial red swamp crayfish (Procambarus clarkii) from China: implications for sustainable aquaculture management.PEERJ,7,24. |
| MLA | Zhang, Tanglin,et al."Reproductive pattern and population dynamics of commercial red swamp crayfish (Procambarus clarkii) from China: implications for sustainable aquaculture management".PEERJ 7(2019):24. |
入库方式： OAI收割
来源：武汉植物园
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