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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 1551

Norbert Walz; Comparative population dynamics of the rotifers Brachionus angularis and Keratella cochlearis. Hydrobiologia 147:209-213, 1987

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The results indicate that the two rotifer species Brachionus angularis and Keratella cochlearis have different life history strategist. Brachionus angularis appeared to be an r-strategist, showing higher reproductive, mortality and population growth rates than K. cochlearis. Additional evidence is offered suggesting that K. cochlearis is a K-strategist. Although K. cochlearis had a lower growth rate than B. angularis, this was compensated by a lower mortality rate, especially in pre-reproductive individuals. In addition, K. cochlearis allocated energy to reproduction more efficiently than B. angularis.