International Journal of Fisheries and Aquatic Studies
2016, Vol. 4, Issue 4, Part C
Reproductive rate of Brachionus calyciflorus under the influence of salinity, temperature, feed type and feed concentration
Author(s): Anitha PS, Sabu AS and Rani Mary George
Abstract: The impact of salinity, temperature, feed type and feed concentration on reproductive rate ‘r’ of
Brachionus calyciflorus were examined in the present study. Three salinity levels (0.5%, 5.0% and 10.0%) and three temperature regimes (25 ± 1 oC, 29 ± 1 oC and 35 ± 1 oC) were evaluated. Four microalgal diets,
Chlorella ellipsoidea,
Ankistrodesmus convolutes,
Scenedesmus protuberans and
Chlorococcum infusorium at a concentration of 1x 10
6, 2x 10
6, 3x 10
6, 4x 10
6, 6x 10
6, 8x 10
6, 10x 10
6 and 12x 10
6 were tested in the experiment. The findings showed that all these parameters have significant influence on reproductive potential of
Brachionus calyciflorus. The optimum salinity and temperature required for
rmax for
B. calyciflorus were of 0.5% and 29 ± 1
oC, respectively. The intrinsic rate of reproduction of
B. calyciflorus for the best salinity x feed concentration with
C. ellipsoidea (8 x 10
6 cell mL-
1),
A. convolutus (6 x 10
6 cells mL-
1), C. infusorium (8 x 106 cells mL-1) and S. protuberans (4 x 106cells mL-1 ) at the optimal salinity and temperature were 1.91, 1.83, 1.77 and 1.62. Based on the study, the maximum reproductive potential of B. calyciflorus can be achieved by feeding with
C. ellipsoidea at a salinity and temperature of 0.5% and 29 ± 1
oC, respectively for the larviculture of fishes.
Pages: 219-226 | 1601 Views 282 DownloadsDownload Full Article: Click Here
How to cite this article:
Anitha PS, Sabu AS, Rani Mary George. Reproductive rate of Brachionus calyciflorus under the influence of salinity, temperature, feed type and feed concentration. Int J Fish Aquat Stud 2016;4(4):219-226.
