Brachionus rotundiformis   Tschugunoff,  1921 (Rotifer)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Rotifera
Class: Eurotatoria
Order:Ploima
Family:Brachionidae

Image copyrights: Jung Min-Min

Brachionus rotundiformis with parthenogenesis egg

Description
Size: Total length of lorica 60-196 µm; maximum width of lorica 52-154 µm; antero-width of lorica 51-73 µm; distance from median to lateral spine 33-47 µm; median sinus gape 17-22 µm; antero-median spine length 11-22 µm; antero-intermediate spine length 9-13 µm; antero-lateral spine length 9-13 µm; maximum width-total length ratio 0.80-0.89; anterior width-maximum width ratio 0.58-0.59; egg size 90 x 65 ( L x W).

Lorica rather flexible, small, more rounded, not sharply separated into dorsal and ventral plates, but little compressed dorso-ventrally, anterior dorsal margin with six acutely pointed spines, nearly equal in length, mental margin rigid, separated into four lobes with considerable variations, lorica without posterior spines. Occipital margin with small based acutely pointed spines. Pectoral margin four-lobed. Lateral ones roughly triangular. Foot opening with subsquare aperture ventrally and rather ovoid aperture dorsally. Lorica smooth or lightly stippled.


Synonym (s)
Brachionus mulleri var. rotundiformis Tschugunoff, 1921
Brachionus plicatilis rotundiformis Rodewald, 1937
Brachionus rotundiformis estoniana Haberman & Sudzuki, 1998
Brachionus rotundiformis Ciros et al., 2001

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Estuarine

Biogeography


• Kerala, Veli-Aakulum Lake (Lat: 8.41) (Long: 76.83) INDIA (Record: 02/2000-01/2001)
• Kerala, Veli-Aakulum Lake (Lat: 8.58) (Long: 76.96) INDIA (Record: 02/2000-01/2001)
• Kerala, Vypin INDIA (Record: 08/2000-07/2002)
• Kerala, Puthuvypu INDIA (Record: 08/2000-07/2002)
• Kerala, Narakkal INDIA (Record: 08/2000-07/2002)
• Kerala, Cherai INDIA (Record: 08/2000-07/2002)
• Kerala, Eloor INDIA (Record: 08/2000-07/2002)
• Kerala, Mangalavanam INDIA (Record: 08/2000-07/2002)
• Kerala, Poothotta INDIA (Record: 08/2000-07/2002)
• Kerala, Kochi Backwaters INDIA (Record: 08/2000-07/2002)
• Kerala, Veli Lake INDIA (Record: 02/1996-01/1997)
• Kerala, Kadinamkulam Lake INDIA (Record: 02/1996-01/1997)
• Kerala, Ashtamudi Lake INDIA (Record: 02/1996-01/1997)
• Kerala, Kochi Fisheries Harbour INDIA (Record: 08/2000-07/2002)
• Kerala, Ernakulam, Market canal INDIA (Record: 08/2000-07/2002)
• Kerala, Fisheries Harbour INDIA (Record: 08/2000-07/2002)

Literature Source(s)
  • Anitha, PS and George, RM (2006) The taxonomy of Brachionus plicatilis species complex (Rotifera: Monogononta) from the Southern Kerala (India) with a note on their reproductive preferences Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 48(1) 6-13 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Utilization of rotifer Brachionus spp. as a live food organism for hatchery-based seed production National Oceanic and Atmospheric Administration Available at - http://www.lib.noaa.gov/korea/korean_aquaculture/zooplanktonic.htm
  • Varghese, M; Krishnan, L and Kuttyamma, VJ (2006) Systematic account on rotifers of the genus Brachionus from Cochin Backwaters Journal of the Marine Biological Association of India The Marine Biological Association of India 48(2) 147-155 Available at - NIO, Goa
  • Varghese, M and Krishnan, L (2008) A preliminary study on rotifer fauna of Cochin backwaters, Kerala Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin, India 50(1) 119-121 Available at - NIO, Goa
  • Gopakumar, G and Jayaprakas, V (2003) Community structure and succession of brackishwater rotifers in relation to ecological parameters Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 45(1) 20-30 Available at - NIO, Goa
  • Varghese, M (2011) Distribution of brachionus species (Phylum Rotifera) in Cochin backwaters, Kerala, India Journal of the Marine Biological Association of India Marine Biological Association of India 53(1) 130-134 Available at - http://www.mbai.org.in/journaldload.php?id=2197&bkid=103
  • Varghese, M (2006) Taxonomic account of rotifers in the study area Studies on the taxonomy, distribution, ecology and reproductive potential of rotifers from selected centres in Cochin backwater system, Kerala Central Marine Fisheries Research Institute 1-343 Available at - http://dyuthi.cusat.ac.in/purl/921
  • Varghese, M (2011) Distribution of Brachionus species (phylum rotifera) in Cochin backwaters, Kerala, India Journal of the Marine Biological Association of India The Marine Biological Association of India 53(1) 130-134 Available at - NIO,Goa

Page last updated on:2011-11-22

Back to Search