Volume 37 Issue 5
Sep.  2016
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Wan-Sheng JIANG, Tao QIN, Wei-Ying WANG, Ya-Peng ZHAO, Shu-Sen SHU, Wei-Hong SONG, Xiao-Yong CHEN, Jun-Xing YANG. What is the destiny of a threatened fish, Ptychobarbus chungtienensis, now that non-native weatherfishes have been introduced into Bita Lake, Shangri-La?. Zoological Research, 2016, 37(5): 275-280. doi: 10.13918/j.issn.2095-8137.2016.5.275
Citation: Wan-Sheng JIANG, Tao QIN, Wei-Ying WANG, Ya-Peng ZHAO, Shu-Sen SHU, Wei-Hong SONG, Xiao-Yong CHEN, Jun-Xing YANG. What is the destiny of a threatened fish, Ptychobarbus chungtienensis, now that non-native weatherfishes have been introduced into Bita Lake, Shangri-La?. Zoological Research, 2016, 37(5): 275-280. doi: 10.13918/j.issn.2095-8137.2016.5.275

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

doi: 10.13918/j.issn.2095-8137.2016.5.275
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  • Corresponding author: Xiao-Yong CHEN, Jun-Xing YANG
  • Received Date: 2016-05-01
  • Rev Recd Date: 2016-07-10
  • Publish Date: 2016-09-18
  • 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 (Misgurnus 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.
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