Brachionus calyciflorus

Brachionus calyciflorus
Scientific classification
Kingdom:	Animalia
Phylum:	Rotifera
Class:	Monogononta
Order:	Ploima
Family:	Brachionidae
Genus:	Brachionus
Species:	B. calyciflorus
Binomial name
Brachionus calyciflorus Pallas, 1766
Synonyms
List Anuraea divaricataWeisse, 1845 Anuraea paleaEhrenberg, 1830 Arthracanthus biremisSchmarda, 1854 Arthracanthus quadriremisSchmarda, 1854 Brachionus decipiensPlate, 1886 Brachionus dorcas f. spinosusWierzejski, 1891 Brachionus dorcas var. spinosusWierzejski, 1891 Brachionus margoiDaday, 1883 Brachionus palaEhrenberg, 1838 Brachionus paleaEhrenberg, 1830 Brachionus pentacanthusFrance, 1894

Brachionus calyciflorus is a planktonic species of rotifer occurring in freshwater. It is commonly used as a model organism in toxicology, ecology and evolutionary biology. Its advantages include the small size and short generation time (average generation time of B. calyciflorus is around 2.2 days at 24 °C).

Taxonomy

Brachionus calyciflorus is the type species of its genus and may be a species complex consisting of more than one species. ^{[1] [2]}

Reproduction

Brachionus calyciflorus normally reproduces by cyclical parthenogenesis. ^[3]
Transitions to obligate parthenogenesis have been described. Obligate parthenogens were homozygous for a recessive allele, which caused inability to respond to the chemical signals that normally induce sexual reproduction in this species. ^[4]

References

1. Brachionus calyciflorus is a species complex: mating behavior and genetic differentiation among four geographically isolated strains JJ Gilbert, EJ Walsh - Rotifera X, 2005 - Springer
2. Spatial patterns of genetic differentiation in Brachionus calyciflorus species complex collected from East China in summer XL Xiang, YL Xi, XL Wen, JY Zhang, Q Ma - Hydrobiologia, 2010 - Springer
3. "Brachionus calyciflorus | Marine Rotifera". rotifera.lifedesks.org. Archived from the original on 23 December 2014. Retrieved 6 June 2022.
4. C.-P. Stelzer, J. Schmidt, A. Wiedlroither, and S. Riss (2010). Loss of Sexual Reproduction and Dwarfing in a Small Metazoan. PLoS ONE 5(9): e12854.