Population Growth of Six Iranian Brachionus Rotifer Strains in Response to Salinity and Food Type

作者：Viayeh Reza Malekzadeh^*; Mohammadi Habib; Shafiei Abbas Banj

来源：International Review of Hydrobiology, 2010, 95(6): 461-470.

DOI：10.1002/iroh.201011263

• rotifer
• Brachionus plicatilis
• Brachionus urceolaris
• algae

Intrinsic rates of population increase (r) were evaluated as a measure of population dynamics of four strains of Brachionus plicatilis and two strains of B. urceolaris from Iran in response to different salinities and feeding algae. Each rotifer strain was cultured at four salinities: 5, 20, 25 and 30 parts per thousand and fed with two microalgal species: Chlorella vulgaris and Nannochloropsis oculata. Salinity of 5 parts per thousand was critical for all the examined strains, at which r was at minimum and was different from the other salinities (P < 0.05). For B. plicatilis strains, the maximum r was observed in those fed on Chlorella at salinities of 10 and 30 parts per thousand (64 +/- 0.01 day(-1)). While, in B. urceolaris, maximum r was for Nannochloropsis fed rotifers at salinity of 20 parts per thousand (0.69 +/- 0.01 day(-1)). Maximum final population density (FD) was obtained for a strain of B. urceolaris fed on Nannochloropsis at 20 parts per thousand (329.3 +/- 10.9 ind. mL(-1)). FD was relatively lower in B. plicatilis strains among all examined salinities. ANOVA showed the significant effect of salinity and rotifer strain, and algae x rotifer strain on both r and FD, and salinity x rotifer x algae on FD (P < 0.05).

• 出版日期2010-12