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Nutritional and density‐dependent responses of some cladocera
Author(s) -
MALHOTRA Y. R.,
LANGER S.
Publication year - 1993
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1993.tb00639.x
Subject(s) - biology , cladocera , daphnia , bran , branchiopoda , zooplankton , daphnia pulex , chlorella , crustacean , ecology , ceriodaphnia dubia , productivity , bosmina , botany , zoology , algae , raw material , macroeconomics , economics
. Four cladoceran species of importance as fish food organisms, viz. Daphnia similes (Claus), Simocephalus vetulus (Schodler). Moina macrocopa (Straus) and Ceriodaphnia cornuta (Sars), were raised in the laboratory on nutrient sources including manures, rice bran and Chlorella. The organisms responded better with rice bran and Chlorella. The productivity of culture organisms appeared to depend upon inoculum and residual densities, indicating a relationship between periodic harvesting and increased production. Associated study reveals the importance of space per individual in the success of laboratory cultures. The optimum space requirement of each species determined by the size of culture organism may vary from 4·5cm 3 per individual for small species like Ceriodaphnia to 41·8cm 3 per individual for the larger species, Daphnia.