Species diversity of drifting fish eggs in the Yangtze River using molecular identification.

ABSTRACT: The dam constructions greatly changed the hydrologic conditions in the Yangtze River, and then significantly affected the spawning activities of indigenous river fish. Monitoring the species composition of drifting eggs during spawning season is important for protection issues. In this study, we have sampled drifting fish eggs in nine locations from 2014 to 2016. Eggs were identified using the mitochondrial cyt b gene sequence. A total of 7,933 fish eggs were sequenced successfully and blasted into the NCBI database. Thirty-nine fish species were identified, and were assigned to four families and two orders. Approximately 64% of the species identified, and 67% of the eggs, were classified in the Family Cyprinidae. Abundance and Shannon-Wiener diversity index of species were higher i

SUBMITTER: Liu M 

PROVIDER: S-EPMC6203937 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature