title: [Species composition and geographical distribution of threatened fishes in Yunnan Province of Southwest China].
abstract: Based on the related published papers, and by using Geographic Information System (ArcGIS 9.3), this paper analyzed the species composition and geographical distribution of threatened fishes in Yunnan Province of Southwest China. There were 83 threatened species living in the Province, belonging to 5 orders, 13 families, and 47 genera. Cypriniformes was absolutely dominant, with 64 species, followed by Siluriformes, with 16 species. Cyprinidae fishes had 51 species, accounting for 79.7% of Cypriniformes. The most species of Cyprinid fishes were of Barbinae (14 species), Cyprininae (10 species), and Cultrinae (10 species). The threatened fishes could be divided into two zoogeographical regions, i. e., Tibetan Plateau region and Oriental region, and their species composition and geographical distribution were resulted from the historical evolution adapted to the related environments. Whatever in rivers and in lakes, the Cyprinid fishes were both absolutely dominant, occupying 36.1% and 31.3% of the total, respectively. The Cyprinid fishes in rivers were mostly of endangered species, while those in lakes were mostly of vulnerable species. The factors affecting the threatened fishes in the Province were discussed from the two aspects of geodynamic evolution and present situation.
authors.affiliation: Asian International River Center, Yunnan University, Kunming 650091, China. zhangqian20062007@163.com
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
authors.forename: Jin-Xin
authors.initials: JX
authors.lastname: Zhong
mesh_terms: D000818:Animals; D002397:Catfishes / Q000254:growth & development; D002681:China; D003247:Conservation of Natural Resources; D003530:Cyprinidae / Q000254:growth & development; D003531:Cypriniformes / Q000254:growth & development; D017753:Ecosystem; D056727:Endangered Species; D005399:Fishes / Q000145:classification* / Q000254:growth & development; D040362:Geographic Information Systems; D005843:Geography