Rotifers Research Articles

Comparison of rotifer culture quality with yeast plus oil and algal-based cultivation diets

The culture quality of rotifers, Brachionus plicatilis, was compared for yeast and algal-based cultivation diets. The rotifer quality was evaluated based on factors which may affect survival and growth of marine fish larvae, including individual length and biomass, nutritional value, bacterial content, and rotifer viability. The diets used were monocultures of Tetraselmis sp., Isochrysis galbana, Pavlova lutheri, and baker's yeast plus capelin oil. Rotifers grown to early stationary phase with equal food rations exhibited equal length distribution, but the rotifer individual biomass was 10–25% higher for yeast-grown rotifers than for algal-grown rotifers. All diets gave equal protein content of individual rotifers. The lipid content was slightly higher and the ratio of protein to lipid was slightly lower with yeast plus capelin oil than with algae. The fatty acid composition of the rotifers was closely related to that of their dietary lipids and the Ω3 fatty acid content was not systematically different for the two types of diets. Use of yeast plus capelin oil resulted in considerably higher numbers of both suspended and rotifer-associated bacteria than with use of algal diets. No differences were found for the algal species involved. The viability of the rotifers in a temperature and salinity test was far better in groups fed algae than in groups fed yeast plus capelin oil. The results indicated an overall better quality of rotifers cultivated with algae than for rotifers cultivated with yeast and oil. Questions related to proteins and the microflora of rotifers should be further emphasized in future research.

Studies of the plankton of Loch Ness, Scotland 3. Rotifers

(1993). Studies of the plankton of Loch Ness, Scotland 3. Rotifers. SIL Proceedings, 1922-2010: Vol. 25, No. 1, pp. 460-460.

Bdelloid rotifers in Dominican amber: Evidence for parthenogenetic continuity

Recently discovered representatives of the Class Bdelloidea from Tertiary amber from the Dominican Republic represent the oldest known fossils of the Phylum Rotifera. Assuming that the fossil bdelloids had a similar mode of reproduction as present day members of the Class (apomictic thelytoky), then contrary to current thought, some lines of parthenogenetic organisms are not doomed to an early extinction and have evolved built-in mechanisms for genetic diversity.

Some Interstitial Rotifera from a Florida, U.S.A., Beach

Some Interstitial Rotifera from a Florida, U.S.A., Beach

A New Genus of the Hyphomycetes Endoparasitic in Rotifers

A New Genus of the Hyphomycetes Endoparasitic in Rotifers

Mastax morphology under SEM and its usefulness in reconstructing rotifer phylogeny & systematics

Mastax morphology under SEM and its usefulness in reconstructing rotifer phylogeny & systematics

Rotifer study as a way of life

Rotifer study as a way of life

Phylogenetic relationships within phylum Rotifera: orders and genus Notholca

Phylogenetic relationships within phylum Rotifera: orders and genus Notholca

Comments on the antarctic Rotifera

Comments on the antarctic Rotifera

Rotifers from Turkey

Rotifers from Turkey

Raising rotifers for use in aquaculture

Raising rotifers for use in aquaculture

Coloniality in the phylum Rotifera

Coloniality in the phylum Rotifera

ワムシによる細菌の取込み

ワムシによる細菌の取込み

Fungal parasites of bdelloid rotifers: Diheterospora

Descriptions and illustrations are given for 12 species of Diheterospora recovered from parasitized rotifers in Ontario. Four of these species have been previously described and eight are described for the first time.

Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera

Echantillons collectes dans un petit reservoir eutrophe d'Argentine. Les trois methodes sont appliquees a Keratella cochlearis; l'echantillonnage par pompe et bouteille donne une sous-estimation par rapport a l'emploi du filet

養鰻池におけるシオミズツボワムシ2系統の季節的隔離

養鰻池におけるシオミズツボワムシ2系統の季節的隔離

Biogeography of rotifers

Biogeography of rotifers

Parallelism in the evolution of rotifers

Parallelism in the evolution of rotifers

Resting eggs in rotifers

Resting eggs in rotifers

Rotatoria. 1980. Proc. 2nd Int. Rotifer Symp., Gent, 1979. Developments in Hydrobiology, v. 1. H. J. Dumont and J. Green, Eds. Dr. W. Junk Publ., The Hague. [Reprinted from Hydrobiologia 73(1-3). 1980.] 268 p. $79.00.

Rotatoria. 1980. Proc. 2nd Int. Rotifer Symp., Gent, 1979. Developments in Hydrobiology, v. 1. H. J. Dumont and J. Green, Eds. Dr. W. Junk Publ., The Hague. [Reprinted from Hydrobiologia 73(1-3). 1980.] 268 p. $79.00.