, Volume 313-314, Issue 1, pp 157-163

Growth pattern of four strains of a Bdelloid rotifer species: egg size and numbers

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Abstract

Life-history traits and growth patterns of four strains of Macrotrachela quadricornifera (Rotifera, Bdelloidea) were studied to assess the influence of maternal traits on egg size. There were two small (S, Va) and two large strains (H, G) with similar patterns of life cycle and body growth. They allocated to reproduction similar relative amounts of resources partitioned into eggs of similar relative size. All strains started reproduction while growing and, although their final sizes differed, at maturity had similar large or small sizes but different ages. Their egg sizes were unaffected by the ‘clutch’ size, but were positively correlated with mother's body size.