Songdaxiang, Mjun. Reproductive biology fo Sarcocheilichthys sinensis. Zoological Research, 1994, 15(zk): 96-102.
Citation: Songdaxiang, Mjun. Reproductive biology fo Sarcocheilichthys sinensis. Zoological Research, 1994, 15(zk): 96-102.

Reproductive biology fo Sarcocheilichthys sinensis

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  • Corresponding author: Songdaxiang
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1994-12-10
  • From July 1991 to 1992, Match and April 1993, 773 speciemens of Sarcocheilichthys sinensis sinensis were collected from Wuchang to Honghe reach of Changjiang River for reproductive biological analysis. The results are as follows: Spawning season lasts from lasts from April to July, but most fo fish spawn in May. Fertilized eggs are drifting in the running water. The diameters of fertilized eggs are between 1.60-2.00mm, and the diameters of egg membranes are between 3.70-4.70mm. 1 year-old fish can reach sexual maturity. Spawning population consists of age 1 and 2 mainly, and sex ratio is 1:1. According to asynchronous development of oocytes and spermatocytes of distribution of egg diameter, S.sinensis sinensis is regard as a definite batch apawner. The individual absolute fecundity varies from 1040 to 5580, its relation to body length may be described by F=2.5.58X10¯²X L2.5402.
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