Population growth of Lepadella patella (O. F. Müller, 1786) at different algal (Chlorella vulgaris) densities and in association with Philodina roseola Ehrenberg, 1832
Por:
Nandini S., Sarma S.S.S.
Publicada:
1 ene 2001
Resumen:
Population growth of Lepadella patella was studied using Chlorella as the sole food at five concentrations ranging from 0.25 × 106 to 4.0 × 106 cells ml-1 at 25 °C for 22 days. The population densities increased with increasing algal concentration up to 1.0 × 106 cells ml-1. The population growth of L. patella was lower at algal concentration of 2.0 × 106 cells ml-1 and above. In a separate experiment, we tested the influence of the bdelloid rotifer Philodina roseola on the population growth of L. patella at different ratios of initial inoculation densities using 1.0 × 106 cells ml-1 of Chlorella at 28 °C. Despite lower initial inoculation densities compared with those in the controls, both L. patella and P roseola showed higher peak abundances when grown together. The maximum peak abundance values recorded for L. patella and P. roseola were 830 and 230 ind. ml-1, respectively, at an inoculation ratio of 1:1.
Filiaciones:
Nandini S.:
Division of Interdisciplinary Research, National Autonomous University of Mexico (UNAM - Campus Iztacala), AP 314, Los Reyes, Tlalnepantla, State of Mexico, CP 54090, Mexico
Sarma S.S.S.:
Division of Interdisciplinary Research, National Autonomous University of Mexico (UNAM - Campus Iztacala), AP 314, Los Reyes, Tlalnepantla, State of Mexico, CP 54090, Mexico
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