水生生物学报2017，Vol.41Issue(3)：543-551,9.DOI:10.7541/2017.70
秀丽高原鳅种群生存力分析及最小可存活种群数估算
A STUDY ON POPULATION VIABILITY ANALYSIS AND ESTIMATION OF MINIMUM VIABLE POPULATION INTRIPLOPHYSA VENUSTA
摘要
Abstract
Triplophysa venusta, one of the native fish species of Jinsha River with well conserved in Yunnan province, have been dramatically decreased because of the construction of hydropower station in its natural habitat and the con-tinuous drought in Yunnan province. In this study, the population viability analysis (PVA) forT. venusta was simulated by VORTEX model under different scenarios. Its minimum viable population (MVP) was also estimated. The results suggested that catastrophe is the key factor for population survival. The population reproductive rate and the mortality of immature individuals are also important factors that affected the population viability inT. venusta. In contrast, there was no significant influence by environmental carrying capacity on population viability. Moreover, the continuing har-vest of 2000 mature individuals per year for 40 years could make 100% extinction in 100 years. In contrast, the extinc-tion probability could reduce to 35.8% in 100 years by the continuing supplementation of 1000 one-year-old indivi-duals per year for 20 years. Simulation analysis using VORTEX model suggested that 16000 individuals could permit a survival of 95% probability in 100 years and it is the MVP inT. venusta. Consequently, our study displays that the ef-fective methods of conservation and recovery inT. venusta are diminishing the frequency of catastrophe, cutting the im-mature individual mortality, and increasing the population fecundity. This study provides a good theoretical foundation for population protection, fishery management, as well as artificial breeding and releasing forT. venusta.关键词
秀丽高原鳅/种群生存力/最小可存活种群/漩涡模型/土著鱼类/金沙江Key words
Triplophysa venusta/Population viability analysis/Minimum viable population size/Vortex model/Indigenous fish/Jinsha River分类
生物科学引用本文复制引用
武祥伟,李光华,毕保良,于虹漫,孔令富,冷云,张宇,姜志武..秀丽高原鳅种群生存力分析及最小可存活种群数估算[J].水生生物学报,2017,41(3):543-551,9.基金项目
云南华电鲁地拉水电有限公司项目(LDL2011/023(P)) （LDL2011/023(P）
云南省科技厅应用基础研究项目(2014FD019) （2014FD019）
云南省科学技术厅项目(2013HB125)资助 Supported by the Project of Yunnan Huadian Ludila Hydropower CO, LTD (LDL2011/023(P)) （2013HB125）
the Applied Basic Research Program of Science and Technology Committee of Yunnan Province (2014FD019) （2014FD019）
the Foundation of Science and Technology Committee of Yunnan Province (2013HB125) （2013HB125）
