Phylum Rotifera is comprised of two classes, Eurotatoria which includes orders Monogononta and Bdelloidea and Seisonidea , with over 2, currently known species. They are most commonly found in freshwater, although some species live in brackish or marine habitats, in soil, or on mosses. Rotifers may be sessile or sedentary and some species are colonial. Some species sexually reproduce, but parthenogenic reproduction is far more common, order Bdelloidea lacks males altogether.
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Brachionus rotifers as a model for investigating dietary and metabolic regulators of aging
Because every species has unique attributes relevant to understanding specific aspects of aging, using a diversity of study systems and a comparative biology approach for aging research has the potential to lead to novel discoveries applicable to human health. Monogonont rotifers, a standard model for studies of aquatic ecology, evolutionary biology, and ecotoxicology, have also been used to study lifespan and healthspan for nearly a century. However, because much of this work has been published in the ecology and evolutionary biology literature, it may not be known to the biomedical research community. In this review, we provide an overview of Brachionus rotifers as a model to investigate nutritional and metabolic regulators of aging, with a focus on recent studies of dietary and metabolic pathway manipulation. Rotifers are microscopic, aquatic invertebrates with many advantages as a system for studying aging, including a two-week lifespan, easy laboratory culture, direct development without a larval stage, sexual and asexual reproduction, easy delivery of pharmaceuticals in liquid culture, and transparency allowing imaging of cellular morphology and processes.
The Breeder’s Net: The Rotifer And Rotifer Home Culture
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The name "rotifer" is derived from the Latin word meaning "wheel-bearer"; this makes reference to the crown of cilia around the mouth of the rotifer. The rapid movement of the cilia in some species makes them appear to whirl like a wheel. At left, you can see a photomicrograph identifying basic anatomical features of Epiphanes brachionus.