Study On The Ecology And Batch Culture Of Cladocera And Rotifer

This report sums up the research works that the author has doing during the postdoctoral period in East Normal University.During the period the author has particulanly studied in ecology and cultural technology of cladocera and rotifer.In the report was included following parts:The first part: Basal researches in batch culturing fresh water cladocera .The research in the sift of kinds fit to batch culture and the main ecological factor have been completed.By drawing up life-table and population culturing , it has been found that Moina macrocopa and Moina rectirostris have great intrinsisc rate of increase and reproductive capacity.They are most fit to batch culture.The suitable density of Sccharomyces cerevisrace for these two kinds of cladocera is 2.5×106 cell/ml and suitable culture temprature for Moina macrocopa is 28℃.The second part: Researches in the measure of increas production and operation sequence of batch culture for rotifer.On the base of studied before author empatically sdudied the measure that can improve culturing effect for rotifer using Sccharomyces cerevisrace.At the same time , was tested the operation sequence of batch culturing. The results shown that adding just the right amount of PSB (1-10%) and vitamin C (0.1mg/ml) to cultivation liquid of Sccharomyces cerevisrace may be markedly promote population increas of rotifer. The harvest density can be 400-530 ind/ml and in the course the density can maintain 200-300 ind/ml at batch culture using Sccharomyces cerevisrace as food of Brachionus calyciflorusThe third part: Initial researches in community of rotifer and cladocera at Changjiang estuary. The author first makes an exhaustive study on structure of community , characteristics of distribution , diversity measur-ements.The fourth part: One chanslational work. "Eco-Biological base of batch culture for rotifer ".The fifth part: Sort out the former achievements in scientific research and published 8 articles.