What is the destiny of a threatened fish, Ptychobarbus chungtienensis, now that non-native weatherfishes have been introduced into Bita Lake, Shangri-La

Biological invasion is a pervasive negative force of global change, especially in its effects on sensitive freshwater ecosystems. Even protected areas are usually not immune. Ptychobarbus chungtienensis is a threatened freshwater fish now almost confined to Bita Lake, in the Shangri-La region of Yun...

Full description

Saved in:
Bibliographic Details
Published in动物学研究 Vol. 37; no. 5; pp. 275 - 280
Main Author Wan-Sheng JIANG Tao QIN Wei-Ying WANG Ya-Peng ZHAO Shu-Sen SHU Wei-Hong SONG Xiao-Yong CHEN Jun-Xing YANG
Format Journal Article
LanguageChinese
Published 2016
Subjects
威胁
淡水生态系统
淡水鱼
生物入侵
碧塔海
种群遗传多样性
调查结果
香格里拉
Online AccessGet full text

Cover

More Information
Summary:Biological invasion is a pervasive negative force of global change, especially in its effects on sensitive freshwater ecosystems. Even protected areas are usually not immune. Ptychobarbus chungtienensis is a threatened freshwater fish now almost confined to Bita Lake, in the Shangri-La region of Yunnan province, China. Its existence is threatened by the introduction of non-native weatherfishes （Misgumus anguillicaudatus and Paramisgurnus dabryanus） by an unusual method known as ＇prayer animal release＇ Periodic surveys revealed the ratio of invasive weatherfishes to P. chungtienensis has been increasing since the former species was first recorded from the lake in August, 2009. Ptychobarbus chungtienensis shows low genetic diversity in the relict Lake Bita population. Weatherfishes, however, have highly successful survival strategies. The degree of dietary overlap between the species is alarming and perhaps critical if food is found to be a limiting factor.
Bibliography:53-1040/Q
Biological invasion is a pervasive negative force of global change, especially in its effects on sensitive freshwater ecosystems. Even protected areas are usually not immune. Ptychobarbus chungtienensis is a threatened freshwater fish now almost confined to Bita Lake, in the Shangri-La region of Yunnan province, China. Its existence is threatened by the introduction of non-native weatherfishes （Misgumus anguillicaudatus and Paramisgurnus dabryanus） by an unusual method known as ＇prayer animal release＇ Periodic surveys revealed the ratio of invasive weatherfishes to P. chungtienensis has been increasing since the former species was first recorded from the lake in August, 2009. Ptychobarbus chungtienensis shows low genetic diversity in the relict Lake Bita population. Weatherfishes, however, have highly successful survival strategies. The degree of dietary overlap between the species is alarming and perhaps critical if food is found to be a limiting factor.
Biological invasion; Threatened fish;Prayer an
ISSN:0254-5853